REST APIs are the interface between clients and servers that allows for data to be shared across platforms, providing a seamless connection between applications, databases, and other resources. A REST API Developer is the programmer who helps clients connect their applications to a certain platform and ensure data is flowing between the two in an efficient, secure manner. This can help to reduce friction, improve performance & scalability, boost security, streamline website navigation, and more.

REST API Developers build and maintain custom programming to enable automated data retrieval and communication with a client’s desired application or platform. This can encompass services such as quickly integrating third-party payment systems into an existing website, minimizing manual work and improving customer experience. They may also incorporate priority systems; for example creating different APIs for handling bulk vs single requests for heavy workloads. Ultimately a REST API Developer helps clients bridge the gap between complex platforms and transform data into valuable business insights.

Here’s some projects that our expert REST API Developers made real:

  • Establishing communication between different applications
  • Creating priority systems for managing large volumes of requests
  • Integrating third-party payment systems into an existing website
  • Developing programming to seamlessly retrieve dynamic data
  • Designing secure connections to protect confidential information

Our highly-skilled REST API Developers are experts when it comes to stitching together the critical links which connect disparate platforms together. With years of experience they have been able to tackle innumerable projects which have led to successful outcomes for our clients. If you have an issue related to connecting your application with another platform or require automated data retrieval services then you can post your own project here on Freelancer.com and hire one of our experienced developers today!

Baseret på 52,768 bedømmelser, giver vores klienter os REST API Developers 4.9 ud af 5 stjerner.
Ansæt REST API Developers

REST APIs are the interface between clients and servers that allows for data to be shared across platforms, providing a seamless connection between applications, databases, and other resources. A REST API Developer is the programmer who helps clients connect their applications to a certain platform and ensure data is flowing between the two in an efficient, secure manner. This can help to reduce friction, improve performance & scalability, boost security, streamline website navigation, and more.

REST API Developers build and maintain custom programming to enable automated data retrieval and communication with a client’s desired application or platform. This can encompass services such as quickly integrating third-party payment systems into an existing website, minimizing manual work and improving customer experience. They may also incorporate priority systems; for example creating different APIs for handling bulk vs single requests for heavy workloads. Ultimately a REST API Developer helps clients bridge the gap between complex platforms and transform data into valuable business insights.

Here’s some projects that our expert REST API Developers made real:

  • Establishing communication between different applications
  • Creating priority systems for managing large volumes of requests
  • Integrating third-party payment systems into an existing website
  • Developing programming to seamlessly retrieve dynamic data
  • Designing secure connections to protect confidential information

Our highly-skilled REST API Developers are experts when it comes to stitching together the critical links which connect disparate platforms together. With years of experience they have been able to tackle innumerable projects which have led to successful outcomes for our clients. If you have an issue related to connecting your application with another platform or require automated data retrieval services then you can post your own project here on Freelancer.com and hire one of our experienced developers today!

Baseret på 52,768 bedømmelser, giver vores klienter os REST API Developers 4.9 ud af 5 stjerner.
Ansæt REST API Developers

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    50 jobs fundet

    I need an experienced automation specialist to take several of our day-to-day business processes and turn them into reliable, hands-free flows using Openclaw as the orchestration backbone.

    €12 / hr Average bid
    €12 / hr Gns Bud
    21 bud

    Both of my access-control platforms—System A (Suprema's Biostar X) and System B (dormakaba's Matrix Professional)—sit on the same Windows server and share a local MS SQL instance. Each exposes a REST API, yet today they operate in silos. I need a seamless, bi-directional integration so that any change to a person or employee record in one system is reflected in the other almost instantly. Scope of the sync • Core identity fields: name and unique ID • Credential data: RFID card number and state • Biometric assets: fingerprint templates • Media: profile picture • Security attributes: access-level permissions Key requirements 1. Real-time operation (sub-second latency acceptable). 2. Conflict-resolution logic—latest change...

    €221 Average bid
    €221 Gns Bud
    32 bud

    I’m building a new service and need a Python-based backend that exposes a clean, well-structured RESTful API. The priority right now is user authentication—registration, login, token refresh, and secure password handling—so the code should follow best practices (hashing, HTTPS-ready, rate limiting, etc.). Here’s what I expect: • A lightweight framework such as FastAPI, Flask, or Django REST Framework—feel free to pick whichever you’re most comfortable with, as long as it stays modular and easy to scale. • Well-named endpoints returning JSON, with meaningful HTTP status codes. • JWT or OAuth2 implementation for auth, plus logout / token blacklist logic. • Unit tests and simple Postman (or similar) collection so I can verify eac...

    €376 Average bid
    €376 Gns Bud
    142 bud

    I have a WordPress website with WooCommerce installed, where I sell both products and services. I want to develop an Android mobile application that works directly with my existing website as the backend. The app should fetch all data (products, services, user accounts, orders, etc.) from my WordPress WooCommerce setup using REST API. Important Requirement: I do NOT want any separate backend or additional hosting. The app must be fully connected to my existing WordPress + WooCommerce system and use it as the only backend. Main Features Needed: App should load data directly from my website Product & Service listing (from WooCommerce) User login / registration (connected to WordPress users) My Account section (orders, profile, etc.) Checkout integration (WooCommerce-based) App should...

    €14 Average bid
    €14 Gns Bud
    17 bud

    We are looking for an experienced React & Node.js developer to build a small web-based application for internal use. The project involves creating a responsive frontend and a simple backend API. Project Overview: The application will allow users to submit and manage basic data through a dashboard interface. Key Features: User-friendly React frontend (responsive design) Node.js backend with REST APIs Form submission and data storage Dashboard to view and manage submitted data Basic validation and error handling Technical Requirements: React.js (Hooks preferred) Node.js with Basic database integration (MongoDB or similar) Clean, maintainable, and well-structured code Deliverables: Fully functional frontend + backend Source code with proper structur...

    €123 Average bid
    €123 Gns Bud
    102 bud
    Sleek iOS GPS Tracking App
    6 dage left
    Godkendt

    I need a brand-new iPhone application that taps into the same REST/JSON API my current Android tracker already uses. The core features must mirror the web platform’s capabilities: real-time location tracking, instant push notifications when events occur, and reliable geofencing alerts. While the data flow and logic can follow the Android build, the look and feel should not. I’m aiming for a professional, sleek interface that feels perfectly at home on iOS—clean typography, smooth animations, and thoughtful use of native components. You’re free to rethink layouts, navigation, and colour palette as long as the result remains elegant and intuitive. I will provide: • Full API documentation and keys • The Android source code for reference • Wir...

    €97 Average bid
    €97 Gns Bud
    22 bud

    I want to release a lightweight companion app for eFootball fans that runs natively on Android and focuses exclusively on rich player profiles and performance stats. The goal is a smooth, modern experience where users can browse, search, and favourite players, then dive into up-to-date attributes, season numbers, and historical records. You will handle the complete Android app development cycle: coding the UI in Kotlin or Java through Android Studio, wiring it to the data source I provide (JSON/CSV or a simple REST API), and packaging a signed APK ready for the Play Store. Clean architecture, material-style design, and efficient local caching are important so lists feel instant even on mid-range devices. Deliverables • Fully functional Android APK • Complete, well-commented s...

    €19 / hr Average bid
    €19 / hr Gns Bud
    77 bud

    I'm looking for an experienced developer to integrate a REST API using Make. The primary function of this API will be data retrieval from a database. Key Requirements: - Set up API and webhooks through Make - Retrieve data from specified database - Ensure smooth and efficient data flow Ideal Skills and Experience: - Strong experience with REST APIs - Proficiency in Make - Database management and integration skills - Problem-solving and debugging expertise Looking forward to your proposals!

    €30 / hr Average bid
    €30 / hr Gns Bud
    56 bud

    I need a full-stack, SaaS-ready solution that lets residents, committee/admin members and security guards handle all daily society tasks from their phones while I oversee everything from a web dashboard. Core workflow • Users sign in with mobile-number OTP and see only the screens tied to their role (Resident, Admin, Guard). • The mobile build must run smoothly on both iOS and Android, using a single codebase if that speeds things up. • A clean top navigation bar should guide every screen transition. Key modules Visitor Management – residents can pre-approve guests; guards simply scan/enter details at arrival and departure; both sides get immediate status updates. Complaints – residents file an issue, watch it move from Open → In Progress → ...

    €264 Average bid
    €264 Gns Bud
    35 bud

    I’m taking a full-stack web application from concept to production and the most pressing piece right now is the backend. I want the core logic, data layer, and secure user flow rock-solid before I refine the rest of the stack. Here’s what I need you to build: • Authentication system – token-based, secure password handling, social login ready if possible • Admin panel – role management, CRUD operations, clear metrics view • Dashboard – REST-driven endpoints feeding charts/tables that can be consumed by my React frontend I’m comfortable running both Django and Flask in the same ecosystem, so feel free to leverage Django’s batteries-included features where they shine and drop into lightweight Flask micro-services when speed or is...

    €5 / hr Average bid
    €5 / hr Gns Bud
    45 bud

    I need a web-based dashboard that lets me monitor core business analytics at a glance. The focus is on clear, responsive charts and graphs that track two critical metrics: sales performance and website traffic. The data will come from sources I can expose through REST APIs or flat files, so the build should accommodate both. I’m open to the charting library you prefer—whether that’s D3.js, , Highcharts, or another modern JavaScript option—so long as the visuals load quickly and can be filtered by date range, product line, and traffic channel without page refreshes. Please structure the project so future datasets can be plugged in with minimal code changes. A lightweight admin panel or straightforward config file approach is fine; I just don’t want to wad...

    €9 / hr Average bid
    €9 / hr Gns Bud
    42 bud
    Laravel REST API
    5 dage left

    I am a Laravel developer and I offer a complete REST API development service. I will build a fully functional Laravel API with CRUD operations and a secure authentication system for your application. This service is ideal if you need a ready-to-use backend that can be connected to any web or mobile application. What I offer: Complete Laravel REST API development Full CRUD operations (Create, Read, Update, Delete) Secure authentication system (Laravel Sanctum or JWT) User registration and login system Token-based protected routes Input validation and error handling Clean, structured and maintainable code Database migrations included Production-ready API This service is perfect for: Web applications Mobile apps (Flutter / React Native) Admin dashboards SaaS projects Price: $20 (Fixed Pric...

    €22 Average bid
    €22 Gns Bud
    66 bud

    I already have a pre-approved promotional template and a list of phone numbers sitting in Google Sheets. What I need is a clean Google Apps Script (or small set of scripts) that connects to WhatsApp Cloud API, authenticates with my Meta token, and fires that single template message to every number in the sheet. Scope of work • Authorise the script with WhatsApp Cloud API, store the access token securely, and handle refresh logic. • Build a simple menu item or button inside the Sheet so I can trigger the send on demand. • Read numbers from a designated column, batch the calls to respect WhatsApp rate limits, and log success / failure back into the sheet in real time. • Provide clear setup instructions so I can reuse or copy the script to other sheets later. Accep...

    €16 Average bid
    €16 Gns Bud
    26 bud

    Project Overview We are looking for an experienced Salesforce Service Cloud Consultant to help shape and scale a modern, data-driven Customer Service organization within a dynamic eCommerce environment. The focus of this role goes beyond standard configuration. You will actively design and implement a scalable and reliable service architecture, enabling efficient case handling, intelligent routing, and measurable service performance. You will work closely with business and product stakeholders to evolve Customer Service into a high-performing, insight-driven function. Responsibilities Design and implement a modern Service Cloud architecture aligned with scalable Customer Service operations Translate business needs into efficient, automated service processes with a strong focus ...

    €42 / hr Average bid
    €42 / hr Gns Bud
    53 bud

    I need an Android application that lets customers schedule at-home servicing for both bikes and scooties in just a few taps. The single must-have feature for this first release is a smooth, location-aware booking flow: the user opens the app, grants GPS permission, selects bike or scooty, picks a service slot and confirms. No real-time tracking or payment gateway is required at this stage—capturing the booking details and pushing them to my team is enough. A modern Material-style interface, compatibility with recent Android versions and fast load times are important to me. Feel free to use Kotlin with Jetpack components or another current stack that keeps maintenance simple. A lightweight back-end (Firebase, Supabase, or a small REST API) is fine as long as bookings reach an admin d...

    €294 Average bid
    €294 Gns Bud
    44 bud

    Ausschreibung: Backend-Integration SaaS-Plattform – Oracle & DocuWare (On-Prem) Wir sind ein deutsches SaaS-Startup und bereiten aktuell die erste Enterprise-Integration unserer Plattform vor. Unser erster Zielkunde betreibt seine gesamte IT-Infrastruktur On-Prem mit zwei Kernsystemen: - Oracle-Datenbank – Stammdaten - DocuWare – Dokumenten-Management-System Wir suchen einen erfahrenen Freelancer, der uns dabei hilft, eine minimale, lesende Anbindung dieser beiden Systeme an unsere Cloud-Plattform ( / Supabase / Vercel) zu konzipieren und umzusetzen. Was wir uns vorstellen: - Read-only-Zugriff auf Oracle (JDBC, ORDS/APEX oder Staging-Schema) - Zugriff auf DocuWare-Dokumente via REST API (ContentServer API) - Nightly Delta-Sync oder On-Demand-Pull – je nach ...

    €16 / hr Average bid
    €16 / hr Gns Bud
    75 bud

    We are looking for an experienced full-stack developer (or small team) based in Hyderabad to design and develop a high-quality, scalable web and mobile application platform. The platform will function as a discovery and booking marketplace, enabling users to search, compare, and connect with relevant service providers through structured profiles, search filters, and booking functionality. The concept is broadly similar to a fitness discovery and booking platform, but detailed functional requirements will be shared only with shortlisted candidates after NDA. We are looking for a developer who can build a production-ready, scalable architecture using modern technologies similar to those used by leading platforms such as Urban Company, Airbnb, Zomato, Practo, etc. Preference will be given...

    €418 Average bid
    €418 Gns Bud
    62 bud

    My enterprise platform is already running on ReactJS in the front-end and Spring Boot in the back-end, yet the programming side of our internal operations still feels heavier than it should. I want to streamline the way new features move from idea to production, tighten the feedback loop between UI and APIs, and remove the little friction points that slow the team down today. You will work across the full stack: shaping clean React components, hardening Spring Boot services, refining our PostgreSQL queries, and wiring everything together with well-structured REST endpoints. Expect to touch build pipelines (Maven, Webpack), unit and integration tests, containerisation (Docker), and CI/CD scripts while you’re here—anything that helps us ship faster and with fewer surprises. Del...

    €16 Average bid
    €16 Gns Bud
    25 bud

    I need a custom WordPress plugin that connects my WooCommerce store to the ProgressionLIVE logistics platform through their public API. The goal is to keep both systems perfectly aligned and to let my customers see live delivery updates without any manual work from my team. Core requirements • Automatically push new WooCommerce orders (including customer details and all order information) to ProgressionLIVE as soon as they are placed. • Pull inventory changes from ProgressionLIVE back into WooCommerce so stock levels remain accurate. • Receive real-time status callbacks from ProgressionLIVE and update each WooCommerce order’s “Order notes” and status accordingly (processing, dispatched, in-transit, delivered, etc.). Technical pointers • Wor...

    €412 Average bid
    €412 Gns Bud
    243 bud
    ISP-Based Virus Detection OS
    3 dage left
    Godkendt

    I hold a non-provisional patent and five CIPs, all free of prior art, that describe a new way to move malware detection out of individual devices and into an ISP’s core. The vision is outlined at ; now I’m ready to turn the concept into a production-grade operating system. I need a developer who can architect and code the entire stack—kernel through management layer—in Python (preferred), and/or choosing whatever base platform makes the most technical sense. High-speed, in-line detection is the top priority, yet the OS must remain easy to manage and scale seamlessly across millions of subscriber links. A clean, intuitive interface for network operators is essential. Cursor users are especially welcome, and I’m aiming for a long-term relationship that could e...

    €2719 Average bid
    Fremhævet
    €2719 Gns Bud
    45 bud

    I already have a working NetSuite ↔ ShipStation connector that pushes standard order data without issue. The remaining gap is five customer-level notes that I keep in NetSuite—“Custom 1, 2, 3”, “Internal Note”, and “Note From Buyer.” I need these text fields to travel with every order and land in equivalent custom fields inside ShipStation. The job is straightforward: extend the existing SuiteScript / RESTlet logic (or whatever method you prefer) so those three NetSuite fields are picked up, passed through the ShipStation API, and show up on the order record there. No extra validation or special formatting is required; plain text is fine as long as the content matches exactly. Please update the code, deploy it to my sandbox first, run a samp...

    €123 Average bid
    €123 Gns Bud
    137 bud

    I’m kicking off a brand-new mobile product and will rely on you to architect both the Flutter front end and the Laravel back end from the ground up. The first release targets Android only, so performance, clean UI, and rock-solid API design are paramount. Please structure the code with future iOS and web expansion in mind. Clear, near-native English (C1 or better) is essential because we will review requirements, pull-requests, and sprint retrospectives and also communication with client (US) entirely in English. We’ll collaborate on an hourly basis; the current plan sits in the low-teens USD range, so think steady, agile progress rather than a rush job. Deliverables for our initial phase: • Laravel REST API with authentication, CRUD endpoints, and scalable database sche...

    €17 / hr Average bid
    €17 / hr Gns Bud
    305 bud

    We're a team based in Pakistan and Canada looking for an experienced Full Stack Developer to work on modern web applications and AI-powered systems. Required Skills: • Frontend: , React.js (hooks, context, SSR/SSG) • Backend: Laravel, PHP (REST APIs, MVC, Eloquent ORM) • AI & Automation: Python, LLM integration, chatbot development • Database: MySQL, PostgreSQL • Version control: Git Responsibilities: • Build and maintain full-stack web applications • Develop and integrate AI chatbots and automation workflows • Design clean, scalable REST APIs • Collaborate on product features from design to deployment You're a great fit if you: • Have 3+ years of hands-on experience with the above stack • Can overlap working hours ...

    €906 Average bid
    €906 Gns Bud
    213 bud

    We're a team based in Pakistan and Canada looking for an experienced Full Stack Developer to work on modern web applications and AI-powered systems. Required Skills: • Frontend: , React.js (hooks, context, SSR/SSG) • Backend: Laravel, PHP (REST APIs, MVC, Eloquent ORM) • AI & Automation: Python, LLM integration, chatbot development • Database: MySQL, PostgreSQL • Version control: Git Responsibilities: • Build and maintain full-stack web applications • Develop and integrate AI chatbots and automation workflows • Design clean, scalable REST APIs • Collaborate on product features from design to deployment You're a great fit if you: • Have 3+ years of hands-on experience with the above stack • Can overlap working hours ...

    €879 Average bid
    €879 Gns Bud
    247 bud

    I need a developer who can create a polished mobile service application that mirrors the professional tools used in phone-repair shops. The app must run smoothly on both iOS and Android from a single code-base so day-to-day updates remain efficient. Core requirements • Build two companion apps (or a single cross-platform build) that compile natively for iOS and Android. • Focus the user experience on the Customer role—log in, view or initiate a service request, and interact with repair-shop information. • Match the look-and-feel of leading repair-shop software: clean dashboards, quick search, and clear status indicators. • Supply the full source code, build instructions, and a short user guide that lets staff upload the binaries to App Store and Google Play...

    €244 Average bid
    €244 Gns Bud
    54 bud

    I need a complete Automatic Number Plate Recognition solution that accurately reads both car and motorcycle plates during daylight hours. Once a plate is captured, the system must do two things automatically: log the full plate data (image, text, timestamp) into a database and trigger an immediate alert through a simple webhook or REST call. My ideal stack is Python with OpenCV or a comparable vision framework, paired with a modern detection model such as YOLOv8-seg, but I am open to alternatives if you can demonstrate equal or better accuracy. You are free to use an off-the-shelf OCR engine (Tesseract, EasyOCR, PaddleOCR) or a custom-trained model, as long as you meet the accuracy target. Key deliverables • Optimized plate-detection and OCR pipeline tuned for daylight footage &bu...

    €92 Average bid
    €92 Gns Bud
    18 bud

    I need an Android-only e-commerce app built from the ground up. The core goal is to let users browse products, add them to a cart, and complete secure in-app payments. Key needs • Modern Android UI that matches our brand palette (assets provided after hire). • Product catalogue with search, category filters, and basic inventory sync via a REST API. • Shopping cart, checkout flow, and integration with at least one popular payment gateway (Midtrans, Xendit, or Stripe—whichever you can set up fastest). • Secure customer accounts with email or Google sign-in, order history, and push notifications for order status. • Basic admin endpoints already exist; you’ll connect the app to them and document any additional endpoints you require. • Cl...

    €16 / hr Average bid
    €16 / hr Gns Bud
    144 bud

    We're a translation services company building an AI-powered management system. The platform will connect translation agencies with clients, automate project estimation using AI, manage translator assignments, and handle quality assurance through an intelligent review system. Document analysis AI-powered document upload and processing (Word, PDF, Excel, PowerPoint) Automatic word count, language pair detection, and complexity assessment Intelligent quote generation based on document type, subject matter, and deadline Real-time cost estimation with breakdown by language pair and service type Project Management Client portal for uploading documents and tracking project status Automated translator matching based on language pairs, specialization, and availability Deadline management w...

    €17 / hr Average bid
    €17 / hr Gns Bud
    343 bud

    I’m looking to wire up my Facebook Lead Ads with my self-hosted Odoo 19 CRM through n8n (Claude helpers are fine if you prefer them for parsing or enrichment). Every new lead on Facebook must appear in Odoo instantly, not in hourly or daily batches. Scope • Listen for Facebook Leads webhooks, handle the access-token refresh cycle automatically, and push data into Odoo’s CRM endpoints the moment a form is submitted. • Map and upsert Contact Information, current Lead Status, and all custom fields we capture on the form; nothing should be dropped. • Avoid duplicates by checking existing records in Odoo before insert. • Build the flow entirely in n8n, export it as a JSON bundle, and include a concise README explaining environment variables, Facebook App...

    €13 / hr Average bid
    €13 / hr Gns Bud
    96 bud

    The IVF management platform I have today is a working prototype with its clinical logic and AI decision-support modules already in place. What it lacks is the rock-solid, scalable infrastructure that will let several clinics onboard seamlessly and run day-to-day operations without hiccups. Here is the environment I have in mind: • A hybrid setup: clinics may keep certain workloads or sensitive datasets on-site while the elastic layer lives in the cloud. • Google Cloud will power the cloud side of that hybrid model, so please be fully comfortable with GKE, Cloud SQL / AlloyDB, Pub/Sub, IAM, and related services. • Core production features we must enable from day one are multi-tenant user management, real-time and historical data analytics dashboards, and well-documented...

    €421 Average bid
    €421 Gns Bud
    119 bud

    I’m launching a new WooCommerce site that must serve both retail shoppers and registered wholesale clients. The retail front-end has to feel modern and clean, while the B2B area needs robust tools for bulk ordering, custom pricing, and a smooth wholesale registration workflow. Core build requirements • Modern, responsive theme designed and implemented from scratch or on top of a lightweight starter. • Automated product import via API, scaling from an initial 1 000 SKUs to roughly 50 000 without time-outs or data loss (think REST, JSON/XML, or a custom PHP script tied into WooCommerce CRUD). • Dedicated B2B layer with tiered pricing, quick order forms, and approval-based account creation. • Banca Transilvania payment gateway fully integrated and tested for...

    €402 Average bid
    €402 Gns Bud
    197 bud

    I support several enterprise customers running Avaya Experience Portal (AEP) with CTI applications that communicate through Avaya Aura Application Enablement Services (AES). To keep pace with their evolving requirements I need fresh code as well as updates to existing voice and desktop CTI components, all of which must slot cleanly into their wider CRM and reporting stacks. Scope of work New modules will handle intelligent call-routing logic, IVR customisation (prompt control, dynamic menus, backend look-ups) and detailed data reporting. Alongside that, some legacy Java and C# services require refactoring for stability and performance, and a set of JavaScript widgets must be wired into web-based agent desktops. Integration points include REST/JSON services, databases, and third-party an...

    €375 Average bid
    €375 Gns Bud
    83 bud

    I’m ready to move my store into a fully featured mobile experience and need an experienced Flutter developer to make it happen. The goal is a single code-base e-commerce app that runs smoothly on both iOS and Android, follows current Flutter best practices, and is production-ready for App Store and Google Play submission. Core scope • Build a modern, responsive UI that reflects my brand’s existing look and feel • Integrate secure checkout, product listing, cart, payment gateway and order-tracking workflows • Connect the app to my current backend (REST API; JSON) and ensure real-time stock updates • Implement push notifications, deep-linking and basic analytics • Package, test and hand over both release builds with clear deployment instructi...

    €6 / hr Average bid
    €6 / hr Gns Bud
    119 bud

    I have already built the front-end screens in React and exposed all required REST APIs from a Python back end. What I now need is someone who can wire the two together and deliver a fully working application for my personal college project, ready no later than 20 April. The look and feel I’m after is simple and clean—nothing fancy, just efficient, intuitive screens that do exactly what they should. All components, routes, and styles are in place; the job is to connect them to the existing endpoints, handle state, and make sure the whole flow runs smoothly from login to data display. Key functionalities that must work flawlessly: • User authentication • Data fetching and display • Form submission You are free to use your preferred helpers (Axios, React Qu...

    €214 Average bid
    €214 Gns Bud
    92 bud

    I need a small server-side application that reads a .FIN file, extracts the M0 and M1 fiat balances it contains, converts those balances to USDC/USDT at the current rate, and routes the settlement through Blockchain. Here’s what matters most to me: • Codebase in Python. Please keep the structure clean, modular, and ready for unit tests so future maintenance is painless. • Direct integration with Circle Mint and Tether for issuing and redeeming USDC/USDT. If Circle’s API is temporarily unavailable we can discuss a fallback—Tether’s own API or an exchange gateway like Kraken—but Circle Mint is the primary path. • Accurate parsing of the .FIN format. The file can hold multiple currency rows, so the parser must detect fiat type, pull the M0/...

    €308 Average bid
    €308 Gns Bud
    38 bud

    Project Title: Full-Stack Food Ordering Platform ( + Node.js + TypeScript) Project Description: I developed a modern, responsive food ordering web application using for the frontend and a scalable backend architecture (Node.js + TypeScript). Live Demo: Key Features: * Modern UI built with (fast, SEO-friendly, responsive) * Dynamic food and restaurant listings * Shopping cart functionality * Clean and user-friendly design * Optimized performance and routing Backend Capabilities (can be included or customized): * REST API built with Node.js / Express or NestJS * User authentication (JWT-based login/signup) * Order management system * Database integration (MongoDB or PostgreSQL) * Payment integration (Stripe or similar) What I Offer: * Full-stack development (frontend + backend) ...

    €521 Average bid
    €521 Gns Bud
    230 bud

    We are looking for an experienced full-stack mobile developer to customize an existing React Native application to function as a driver-facing mobile app. The work involves adapting the existing UI and logic to match our operational requirements, building a new Node.js REST API backend from scratch, and connecting both to our existing PostgreSQL database. This post covers the full scope for accurate estimation and pricing. What We Have - An existing React Native codebase (driver app template/base) that requires customization - An existing PostgreSQL database with established schema and data - Defined business logic and workflows for how drivers will interact with the system Scope of Work 1. React Native App Customization - Rebrand and redesign screens to match our brand identity (colors,...

    €435 Average bid
    €435 Gns Bud
    196 bud

    I’m building a web-based product that makes it easy for companies to find short-term technical talent and for tech professionals to land the right gigs. The core of the project is the talent-sourcing workflow, but the wider vision also covers engagement, payments, and delivery tracking, so clean architecture and clear hand-offs between modules are essential. Scope of the first release • Role support: Job Seekers, Employers, and an Admin back office for moderation, analytics, and user management. • Feature set: – Profile creation and powerful search so employers can filter by skills, availability, and rate. – Job posting with an application flow that lets candidates apply or be invited. – An automated matching engine that surfaces the best ...

    €3432 Average bid
    €3432 Gns Bud
    120 bud

    I want to accept cryptocurrency through Payqora ( ) on my fully bespoke HTML / CSS / JavaScript site. The flow is straightforward—visitors will be making one-time purchases only—but I need the integration to feel completely native to the rest of the site. Alongside wiring up Payqora’s API (checkout widget, callbacks, webhooks or REST endpoints—whatever their latest docs recommend), I also need: • A custom-designed checkout page that matches my brand styles and loads seamlessly within the existing codebase. • Multi-currency support so prices can automatically switch between at least USD, EUR, and the major coins Payqora supports. • A lightweight, back-office transaction report—JSON or CSV export is fine—that pulls key details (TX hash...

    €86 Average bid
    €86 Gns Bud
    13 bud

    I’m looking for an experienced ServiceNow developer to tackle a handful of related tasks on our existing instance. The immediate ipriorities are: • microsoft teams integration with servicenow

    €86 Average bid
    €86 Gns Bud
    24 bud

    I’m ready to wire our Salesforce org into a proprietary ERP platform so data flows cleanly between the two without manual re-keying. My priority is full “Integration with other systems,” specifically an “ERP system,” but ours is a home-grown solution rather than SAP, Oracle, or Microsoft Dynamics. Here’s the picture: • Objects in scope include Accounts, Contacts, Opportunities, Orders, and custom objects that mirror our ERP tables. • Data must travel both ways—new or updated records in either system should appear in the other within minutes. • I’d like to use standard Salesforce APIs (REST or SOAP) or Apex callouts; I’m open to middleware such as MuleSoft, Dell Boomi, or a lightweight custom service if that proves ...

    €154 Average bid
    €154 Gns Bud
    17 bud

    I’m building a full-featured OTA hotel booking platform on WordPress and need an experienced developer to take it from concept to launch. Scope • Recommend a clean, modern-minimalist WordPress theme or starter kit that you can customise for high-performance and responsive design across desktop, tablet, and mobile. • Integrate Hotelbeds, WebBeds, and RateHawk APIs. The priority is truly seamless connectivity—real-time room availability, rates, and instant confirmation must flow without latency or data mismatch. • Build the core booking engine with calendar availability, dynamic pricing, coupon logic, and user-friendly steps from search to checkout. • Implement Stripe as the payment gateway, including secure 3-D Secure authentication and error-handl...

    €79 Average bid
    €79 Gns Bud
    80 bud

    I’m ready to move my real-estate business onto mobile and need a complete application released on both iOS and Android. The public-facing side is where buyers and tenants will browse, search, and favourite properties, book viewings, and receive push notifications about new listings or status updates. Clean navigation, fast map-based search, and secure sign-up via email, Google, or Apple ID are must-haves. Behind the scenes, I also need the tools that keep my agents productive: • Property listing management – add, edit, remove, and highlight properties with photos, video, and floor-plans. • Client interaction – in-app chat or messaging for quick responses, plus automated follow-ups. • Analytics & reporting – dashboards that show lead sources...

    €185 Average bid
    €185 Gns Bud
    172 bud

    Project Brief: Web Software Development for Pow3rOn Overview We need a freelancer or development team to build the web software version of Pow3rOn, a power-bank rental management platform for hospitality venues such as restaurants, bars, cafés, beach venues, clubs, hotels, and similar locations. The business model is based on placing charging devices/power-bank units on tables or in specific venue locations. End users can access the service, receive an unlock code, use the battery for a selected rental period, and the platform must track usage, merchants, devices, payments, rental sessions, and revenue distribution. This is not a simple website. We need a real web-based operational platform with admin logic, merchant logic, device assignment, unlock code flow, reporting, and sca...

    €1504 Average bid
    €1504 Gns Bud
    199 bud

    Title: Senior Full Stack Developer (TypeScript, React, Node) for Mercor Project Description: We are looking for a talented and experienced Senior Full Stack Developer to join our team for the Mercor project, a scalable platform in the logistics/3PL domain. You will be responsible for designing and developing high-quality, scalable applications, collaborating with cross-functional teams, and owning features end-to-end. Responsibilities: Develop backend services using Node.js and TypeScript Build responsive frontend interfaces with React Design and integrate RESTful APIs Ensure performance, scalability, and code quality Collaborate with stakeholders and engineers Requirements: Strong experience with TypeScript, Node.js, and React Experience building scalable web applications Familiarit...

    €44 / hr Average bid
    €44 / hr Gns Bud
    152 bud

    I need Website and python also, i have already one website for checking and looking for south I need a complete algorithm-trading platform built from the ground up, combining a clean, responsive website with a robust Python back-end. The core goal is to run and monitor trading algorithms in real time, so the system must connect to live stock-exchange data feeds without noticeable latency. I already have a model website that illustrates the general look, navigation flow, and key screens (dashboard, strategy editor, live feed panel, results viewer). You are free to improve on the design, but the overall user journey should feel familiar to what I provide. Back-end requirements • Written in Python (FastAPI or Django preferred) • Secure connection to real-time stock-excha...

    €71 Average bid
    €71 Gns Bud
    27 bud
    Κώδικας VB για API
    6 timer left
    Godkendt

    Χρειάζομαι έτοιμο κώδικα σε Visual Basic μέσα στο Microsoft Visual Studio Tools for Applications 2015 που να συνδέεται σε συγκεκριμένο API server. Τι ζητώ να κάνει ο κώδικας • Να ανοίγει ασφαλή σύνδεση (HTTPS) προς το καθο&...

    €169 Average bid
    €169 Gns Bud
    26 bud

    React + GIS + Azure Developer with AI Integration required Project Overview We are building a GIS-based siting and infrastructure planning dashboard that combines: • Interactive geospatial visualization • Large-scale data handling • Cloud deployment on Azure • AI-powered (agentic) workflows for geospatial insights We are looking for a skilled React developer who can work full-time for 1 month and has hands-on experience with map-based applications, Azure, and AI integrations. Responsibilities Frontend & GIS Development • Build modern UI components using React • Develop a map-centric dashboard for geospatial analysis • Integrate ArcGIS Maps SDK / Mapbox / Leaflet • Implement map features: layers, filters, tooltips, overlays Data Integration &...

    €486 Average bid
    €486 Gns Bud
    64 bud

    ResortEase – Complete Resort Management System (Full-Stack Web Application) Overview ResortEase is a comprehensive, production-ready resort management platform designed to streamline hospitality operations and enhance guest experiences. This full-stack solution combines a modern user interface with a scalable backend architecture, making it ideal for resorts, hotels, and vacation properties seeking digital transformation. Key Features Admin Dashboard Secure role-based authentication for administrators Complete room management system (add/edit/delete rooms, pricing, availability) User management with booking history tracking Advanced analytics & reporting (occupancy rates, revenue insights) Fully responsive UI for desktop and mobile use Backend API RESTful API built with Node.js...

    €84 Average bid
    €84 Gns Bud
    46 bud

    I need a Python-based module that hooks directly into Zoom’s REST API so I can create, update, and delete meetings, then programmatically add participants to any of those sessions. OAuth will be the authentication method, so the flow must include user consent, token storage/refresh, and revocation handling. Core expectations • Build clean, well-structured endpoints or helper classes that wrap the Zoom API calls for meeting CRUD and participant insertion. • Ensure that participant e-mails, names, and join URLs are returned so I can save them on my side. • Follow Zoom’s security guidelines when passing access tokens or PII—no hard-coded secrets, proper HTTPS requests, and server-side token exchange only. • Deliver readable, commented Python code...

    €9 / hr Average bid
    €9 / hr Gns Bud
    109 bud

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