Java is a versatile, object-oriented programming language that is widely used for software development across various industries. Java Developers can help clients create anything from complex web applications to automated trading bots and mobile apps. With their advanced skills and knowledge, they can turn your vision into reality, providing you with tailored solutions that align with your business goals. Here are some recent projects that our expert Java Developers made real:

  • Developing custom GUIs for existing codebases
  • Creating encrypted, secure crypto apps
  • Designing cross-platform audio merging tools for mobile devices
  • Building sophisticated trading bots for the cryptocurrency market
  • Implementing open-source virtual machines in C
  • Collaborating as senior developers on large-scale Android projects
  • Solving server request errors for mobile applications
  • Running and optimizing code from Git repositories
  • Designing and implementing web services for seamless integration

Hiring Java Developers on Freelancer.com gives you access to a global pool of talented professionals who can deliver high-quality solutions tailored to your needs. Our platform makes it easy and convenient to find, hire, and collaborate with skilled Java experts from around the world. So why wait? Bring your ideas to life by posting your own project and hiring a Java Developer on Freelancer.com today!

Baseret på 244,497 bedømmelser, giver vores klienter os Java Developers 4.9 ud af 5 stjerner.
Ansæt Java Developers

Java is a versatile, object-oriented programming language that is widely used for software development across various industries. Java Developers can help clients create anything from complex web applications to automated trading bots and mobile apps. With their advanced skills and knowledge, they can turn your vision into reality, providing you with tailored solutions that align with your business goals. Here are some recent projects that our expert Java Developers made real:

  • Developing custom GUIs for existing codebases
  • Creating encrypted, secure crypto apps
  • Designing cross-platform audio merging tools for mobile devices
  • Building sophisticated trading bots for the cryptocurrency market
  • Implementing open-source virtual machines in C
  • Collaborating as senior developers on large-scale Android projects
  • Solving server request errors for mobile applications
  • Running and optimizing code from Git repositories
  • Designing and implementing web services for seamless integration

Hiring Java Developers on Freelancer.com gives you access to a global pool of talented professionals who can deliver high-quality solutions tailored to your needs. Our platform makes it easy and convenient to find, hire, and collaborate with skilled Java experts from around the world. So why wait? Bring your ideas to life by posting your own project and hiring a Java Developer on Freelancer.com today!

Baseret på 244,497 bedømmelser, giver vores klienter os Java Developers 4.9 ud af 5 stjerner.
Ansæt Java Developers

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    105 jobs fundet

    Hello Team, We are planning to build a custom enterprise platform for my company and require an end-to-end software development cost estimation (including architectural backend engineering and frontend dashboard layout) for the following core modules: Custom NLU Engine (Local Context): AI agent orchestration optimized for colloquial language (handling mixed Romanized Urdu dialects and phonetic spellings) with robust runtime typo-handling, multi-turn state persistence, and dynamic multi-model API fallback logic. Vision Surveillance Integration (CV Guard): Background webcam frame processing using local Computer Vision models for real-time facial tracking, continuous desk-presence monitoring ("Admin left desk", "Unknown person detected"), and generating immediate databa...

    €1276 Average bid
    €1276 Gns Bud
    49 bud

    I have a fully-working Android application that currently runs only in offline mode. I now need it moved online so users can access live data through a dedicated server. No new features or UI changes are required—the goal is a straight deployment that preserves all existing functionality. You will handle everything from configuring the server environment, setting up any required APIs or databases, to packaging and releasing an online-ready APK. Once complete, the app should connect seamlessly to the server, sync data in real time, and perform exactly as it does offline. Please outline the approach you would take, the tools you’ll use (Android Studio, backend framework, hosting stack, etc.), and an estimated turnaround time. Successful delivery is the live server running and t...

    €62 Average bid
    €62 Gns Bud
    26 bud

    Je souhaite faire développer une application mobile Android centrée sur l’intégration des médias sociaux. L’idée est d’offrir aux utilisateurs un moyen simple de se connecter via leurs comptes existants (Facebook, Google, Twitter …) et de partager du contenu directement depuis l’app. Ce dont j’ai besoin : • Une première version fonctionnelle (APK) compatible avec les dernières versions d’Android. • Connexion et authentification OAuth avec les principales plateformes sociales. • Possibilité de publier, aimer et commenter du contenu partagé depuis l’application. • Code source clair, documenté, remis sur un dépôt Git. • Brè...

    €422 Average bid
    €422 Gns Bud
    56 bud

    I accidentally wiped several important WhatsApp conversations from my Android phone, and since then WhatsApp has run its scheduled cloud backups to Google Drive multiple times. The deletions happened over a month ago, so the current backup no longer contains the chats I need. I want to know whether those earlier, overwritten messages can still be extracted—either from an older Google Drive snapshot, residual local *.crypt12* files, or any other forensic avenue—and, if so, to have the complete chat threads restored or at least exported in a readable format (TXT, PDF, or HTML). You should already be comfortable working with Android data recovery, ADB, WhatsApp key database decryption, and Google Drive backup parsing. If root access or a temporary unlock bootloader is required, ...

    €66 Average bid
    €66 Gns Bud
    7 bud
    Fix WhatsApp Crash on Android
    6 dage left
    Godkendt

    I'm seeking an experienced Android developer to troubleshoot and fix an issue with WhatsApp on my device. The app crashes during usage, making it unusable. Requirements: - Expertise in Android app troubleshooting - Previous experience with WhatsApp-related issues - Ability to diagnose and resolve app stability problems Ideal Skills: - Android development - Experience with app crash analytics - Strong problem-solving skills Please provide examples of similar work done.

    €22 Average bid
    €22 Gns Bud
    64 bud

    I am a Validation Engineer seeking an experienced freelancer (AI + Python + Automation + Document Generation) to design and develop an intelligent validation framework to improve productivity by 25–30%. The framework should automate repetitive tasks and enhance documentation quality. Key Requirements: - Automate test report generation in Excel with graphical representations (charts/trends/comparisons). - Automate the creation of Validation Plans and SOPs in Word, simplifying technical language for stakeholders. - Reuse previous test data effectively to avoid repetitive testing. - Establish a centralized repository for validation knowledge. Ideal Skills & Experience: - Expertise in AI, Python, and automation. - Experience with document generation tools and frameworks. ...

    €201 Average bid
    €201 Gns Bud
    16 bud

    I need a straightforward Android-only “DLC locker” whose core job is to let users create, view, edit, and delete their own profiles. The app will authenticate purely through the classic email-and-password flow; social log-ins or two-factor checks can stay out of scope for now. Here’s the flow I have in mind. A splash screen leads to a secure login / registration form, after which the user lands on a dashboard listing their saved profiles. From there they can add a new profile, tap to edit existing data, or wipe one entirely. A clean Material-style UI, clear navigation, and solid error handling are important to me. Deliverables • Full Android Studio project (Java or Kotlin) • APK for quick testing on a physical device • README outlining build steps a...

    €189 Average bid
    €189 Gns Bud
    19 bud

    # Hiring: Experienced Python FastAPI Backend Developer (Long-Term Project) I'm looking for an experienced **Python FastAPI Backend Developer** to collaborate with me on a long-term salon booking platform. The backend should be **scalable, secure, and follow clean architecture with industry best practices**. ## Backend Features * Authentication (OTP, JWT, Role-Based Access) * Customer, Salon Partner & Admin APIs * Salon registration & approval workflow * Salon profile, services, categories & image management * Search, filtering & nearby salon APIs * Booking management (Create, Update, Cancel, Reschedule) * Time slot & availability management * Live, Special & VIP booking support * Payment gateway integration (Razorpay or similar) * Coupons & promotional o...

    €237 Average bid
    €237 Gns Bud
    128 bud

    We are looking for highly experienced corporate trainers to deliver instructor-led training programs for the following technology stacks. The engagement is for enterprise-level training, and trainers should have strong hands-on industry experience along with proven corporate training expertise. Training Requirements We require trainers for the following technology stacks: Angular + Google Cloud Data Science + Generative AI Google Cloud Data Engineering Google Cloud Full Stack Development Java, Spring Boot, Microservices & Google Cloud Platform (GCP) React + Google Cloud A detailed 15-day training plan for each technology stack will be shared with shortlisted candidates for reference. Trainer Requirements Minimum 5+ years of relevant industry experience. Prior experience delivering...

    €33 / hr Average bid
    €33 / hr Gns Bud
    16 bud

    We are building a hyper-local discovery platform that connects two type of users. We are looking for a highly motivated Full-Stack App Development Freelancer to work directly with the founding team to build, scale, and optimize our mobile application. You will have full ownership of features and work on a modern, low-code/code stack. Developer to be based out of Guwahati, Assam. App Development: Build and iterate on UI screens in FlutterFlow based on provided requirements. Backend & Database: Manage Supabase (PostgreSQL) databases, including table architecture and Row Level Security (RLS) policies. API Integration: Connect third-party APIs (e.g., OTP services like MSG91/Fast2SMS, identity verification APIs like [Aadhaar Redacted] verification services, and payment SDKs) to the app flo...

    €497 Average bid
    €497 Gns Bud
    124 bud

    Project Overview We are looking for an experienced Certified Selenium Automation Tester for a one-time project to create and execute automated test cases for our web application. The ideal candidate should have strong experience with Selenium-based automation frameworks and be able to deliver clean, maintainable, and well-documented test scripts. Scope of Work - Analyze the web application and understand functional requirements. - Create an automation framework (if required) or use an existing best-practice framework. - Develop Selenium automation scripts for critical user journeys. - Perform functional and regression testing. - Generate detailed test reports with screenshots/logs. - Identify and document bugs with reproduction steps. - Provide source code and documentation for future mai...

    €224 Average bid
    €224 Gns Bud
    36 bud

    I’m building a straightforward voice-only calling app dedicated to Android. The core requirement is rock-solid one-to-one voice communication, so there’s no video feed or chat module to worry about—just clean, low-latency audio calls. Users will sign up and log in with phone-number verification (OTP/SMS). Once authenticated, they should see a simple contact list, tap a name, and place a call. Think of an experience as seamless as a standard dialer but inside its own sandboxed app. What I need from you: • Full Android Studio project (Kotlin or Java) with well-commented source code • Functional APK for testing on Android 10+ devices Acceptance: • Phone verification must complete within two steps and fail gracefully on bad codes • Voice connection ...

    €259 Average bid
    €259 Gns Bud
    73 bud

    I have a catalogue of roughly 25 pharmaceutical companies, supplied as Excel sheets and individual PDFs, and I need a lightweight Android application that lets users type a query and instantly locate matching terms inside each product’s description. The project covers everything from converting the source files into a searchable local database through to publishing the finished APK on the Google Play Store under my developer account. Key requirements • Data import: read the Excel rows and PDF text, normalise them, and store them locally or on google sheet. • Core feature: free-text search that highlights occurrences inside the full description—not just by name or code. • Simple UI: a single search field, results list, and a detail screen that renders the ful...

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

    My code is ready to ship, but I still need the crucial “first-time” tasks that turn a finished Android project into a live listing on Google Play. Your job is to cover the entire initial setup and launch: create or configure the Play Console account, generate and sign the release bundle, prepare screenshots and listing assets, upload, roll out the release, and verify that the app installs and runs on real devices without warnings or policy flags. I’ll provide source code, graphics, and copy; you guide the signing process (keystore creation, versioning), handle Play Console settings such as package name and track selection, and leave me with a published version plus concise notes for future updates. If you’ve taken apps from codebase to first launch before and ...

    €10 / hr Average bid
    €10 / hr Gns Bud
    67 bud

    I am building a full-featured general job portal dedicated to Android users and need an experienced developer who can take the project from concept to Play Store launch. The app must serve three distinct user roles—job seekers, employers, and an admin—so the architecture has to be clean, secure, and scalable. Core flow • Job seekers create profiles, upload résumés, browse filtered vacancies, save searches, and apply in-app (file upload and in-app messaging included). • Employers register company accounts, post openings, manage candidate pipelines, and receive real-time application notifications. • An admin console (web-based or embedded) lets me moderate content, verify employers, and run basic analytics. I’m open to Java, Kotlin, or a...

    €256 Average bid
    €256 Gns Bud
    88 bud

    I’m expanding my software development pipeline and need a skilled bidder who can consistently win projects for me on freelance marketplaces. The focus is software development assignments that target both web and mobile platforms, and for web work my preferred stack is JavaScript with React. Here’s how I work: I provide you with portfolio pieces, rate cards, and technical clarifications; you hunt for suitable leads, write tailored proposals, communicate with prospects, and secure the deal. For every project you land and hand over to me in writing (scope, deadline, agreed price), you earn a generous percentage of the contract value—paid immediately after the client’s first milestone clears. The commission stays in place for every subsequent milestone on that same pro...

    €211 Average bid
    €211 Gns Bud
    37 bud

    requirements: Must be 18 years of age or older and fluent in English. Must be a software engineer, infrastructure or DevOps engineer, data or ML engineer, security engineer, CS student with coding experience, or a technical manager who writes code. Must be comfortable completing work primarily through a terminal-based environment. Must have hands-on programming experience and provide a valid GitHub profile URL. Must be able to describe the most technically difficult software problem they have solved in detail. Must be willing to complete an identity-verification process and a one-attempt software-engineering skills assessment. You will design advanced coding tasks for AI systems in a remote environment and will be paid 154$ per task created NOTE: You have to complete ID verification and...

    €3358 Average bid
    €3358 Gns Bud
    30 bud

    I need a Minecraft mod ported from Java Edition 1.19.2 to 1.21.1. Requirements: - Experience with Minecraft modding - Proficiency in Java - Familiarity with Minecraft version changes and their impact on mods Ideal Skills & Experience: - Previous mod porting experience - Strong understanding of Minecraft's codebase - Problem-solving skills to adapt to new version requirements Please provide examples of similar work done.

    €247 Average bid
    €247 Gns Bud
    78 bud
    €211 Gns Bud
    33 bud

    Ye ready-to-copy project description hai: Writing Custom Telegram Stock Alert Bot (Python + Zerodha Kite Connect) Project Overview I need a custom stock alert system for my personal use. The application should monitor up to 500 NSE/BSE stocks using the Zerodha Kite Connect API and send instant Telegram alerts when a manually configured target price is reached. Requirements Stock Monitoring Monitor up to 500 NSE/BSE stocks. Use Zerodha Kite Connect API. Run during Indian market hours. Use WebSocket for real-time monitoring (preferred). Telegram Bot Features The bot must support the following commands: /add SYMBOL TARGET_PRICE /update SYMBOL TARGET_PRICE /remove SYMBOL /list /search SYMBOL Alert Message When a target is hit, send a Telegram notification containing: Stock Name Current Price T...

    €201 Average bid
    €201 Gns Bud
    54 bud

    I need a tool for home use, running on Windows 11 25H2. Actually, I’ll probably need three tools. First, I want it to install itself in the system and run unnoticed in the background every time the system starts up. It shouldn’t be visible anywhere in the Start menu or in the processes list. And if it’s impossible to hide it from the processes list, it should masquerade as another process. The tool should allow for seamless connection to the computer via a so-called remote desktop, with the ability to control it from any other computer on the local network by entering the local IP address. It should place minimal load on the computer and be unnoticeable to the user; network traffic should also not arouse suspicion so that it isn’t immediately obvious that it&rsquo...

    €74 Average bid
    €74 Gns Bud
    61 bud

    Experienced Java Spring Boot Developer & Mentor Needed for Hands-on Real-World Project Training I am looking for an experienced Java Spring Boot developer who can mentor me through hands-on learning by building real-world demo projects together. This is not just a teaching role. I want to learn by developing practical applications from scratch using industry best practices. I have basic knowledge already. What I am looking for: Strong experience with Java (Java 17/21 preferred) Strong experience with Spring Boot Experience with REST APIs, Spring Data JPA, Hibernate Experience with MySQL or PostgreSQL Knowledge of Maven/Gradle Experience with Git and GitHub Good understanding of software architecture and clean code principles Ability to explain concepts clearly while coding togeth...

    €7 / hr Average bid
    €7 / hr Gns Bud
    113 bud

    Title: Android APK Security Tester / VAPT Expert Required Hume apne Android application ka authorized security audit karwana hai. Hume ek experienced Android security tester chahiye jo APK, APIs aur backend communication ko test karke security vulnerabilities identify kare aur unke practical fixes bataye. Work Scope: - APK static aur dynamic security analysis - Authentication aur session security testing - API security testing - SQL Injection, IDOR, XSS aur access-control testing - SSL/TLS aur certificate pinning review - Sensitive data storage aur data leakage check - APK decompilation, code obfuscation aur tampering protection review - Root detection, emulator detection aur anti-debugging review - Hardcoded API keys, URLs, credentials aur secrets check - Firebase, WebView, permissions...

    €235 Average bid
    €235 Gns Bud
    35 bud

    I have a single Android APK in hand and can confirm it is a release build. It went through ProGuard / R8 / DexGuard, so the classes and method names are fully obfuscated, and, to make things trickier, I do not have the original mapping files. What I need from you is a clean, structured decompilation and a readable reconstruction of the app’s logic. At the end of the engagement I should be able to: • open the decompiled project in Android Studio • follow clear, renamed packages, classes, and methods that make functional sense • trace the core workflows I will specify once you start (network layer, in-app purchase flow, and one utility module) • compile a patched build if small tweaks are required Please work with whatever stack you prefer—Jadx, JADX...

    €29 / hr Average bid
    €29 / hr Gns Bud
    52 bud

    I need a developer who can build a custom feature for Google’s Gboard that focuses squarely on improving the accuracy of its text-prediction engine. This isn’t a bug-fixing exercise or a simple integration; it is genuine feature development aimed at smarter, more context-aware suggestions while users type. Your job will start with analysing the existing prediction logic, then designing and implementing modifications—whether that means plugging in a new on-device language model, refining the current n-gram pipeline, or introducing lightweight neural-network tweaks that can run efficiently in real time. Kotlin or Java proficiency for the Android input-method framework is essential, and a solid grasp of NLP techniques, TensorFlow Lite (or similar), data handling, and privac...

    €10 / hr Average bid
    €10 / hr Gns Bud
    31 bud

    I already have PiSDR pulled from and running on a Raspberry Pi 4; what I need is a clean, repeatable build that behaves exactly the same every time I power up the board and mini HDMI display. Task 1 – Reliable display boot • Make PiSDR load the desktop and SDR stack automatically on power-on, scaled correctly for the Pi 4 mini monitor with no extra keystrokes or shell commands. Task 2 – Dual-role connectivity • Configure the image so the Pi can lock onto any available open satellite link for down- and uplink (receive and transmit). • At the same time enable the on-board Wi-Fi to rebroadcast that link as a portable hotspot, giving nearby devices internet access through the satellite path. GUI requirement Both satellite comms and hotspot functionality a...

    €387 Average bid
    €387 Gns Bud
    116 bud

    I’m ready to launch a new digital presence that pairs a high-performance, custom-designed website with the power of AI. The project has three clear pillars: • AI Search Optimization (AEO) to surface rich results and knowledge-graph visibility • Custom website design and development that looks stunning and loads fast • AI chatbots and workflow automation that handle repetitive queries and tasks Technology stack preference My content and features should be coded in HTML, CSS, Java and PHP. I’m also open to WordPress, React or if they help us meet speed and scalability goals. Scope of work 1. Plan and wireframe the site’s information architecture with UI/UX best practices. 2. Develop responsive pages, integrate schema markup and optimise Co...

    €273 Average bid
    €273 Gns Bud
    80 bud

    Portfolio Project: The Android Crash & Recovery Lab Instead of just saying you can fix crashes, build a portfolio case study where you deliberately simulate an Android system failure and document the precise engineering steps to fix it. This proves your technical expertise to potential clients. Phase 1: Diagnosing an App-Level System Crash Clients frequently face issues where their app crashes the entire Android system UI or memory management. The Task: Create a basic Android application that intentionally triggers an OutOfMemoryError or a main-thread deadlock (ANR - Application Not Responding) by loading too many high-res bitmaps into memory at once. The Fix: Connect the device to your computer via ADB (Android Debug Bridge). Use Android Studio Profiler to capture the memory leak. Use...

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

    Portfolio Project: The Android Crash & Recovery Lab Instead of just saying you can fix crashes, build a portfolio case study where you deliberately simulate an Android system failure and document the precise engineering steps to fix it. This proves your technical expertise to potential clients. Phase 1: Diagnosing an App-Level System Crash Clients frequently face issues where their app crashes the entire Android system UI or memory management. The Task: Create a basic Android application that intentionally triggers an OutOfMemoryError or a main-thread deadlock (ANR - Application Not Responding) by loading too many high-res bitmaps into memory at once. The Fix: Connect the device to your computer via ADB (Android Debug Bridge). Use Android Studio Profiler to capture the memory leak. Use...

    €73 Average bid
    €73 Gns Bud
    27 bud
    Fix Android Settings Crash
    5 dage left
    Godkendt

    My native Android app (Java) has crashed from day one whenever the user taps the Settings button on the profile screen; the error is the classic “Unfortunately, the app has stopped.” The crash is 100 % reproducible—open profile, tap Settings, boom. I need someone with solid knowledge of Activities, Fragments, and their lifecycle quirks to track down the fault, correct it, and let the Settings screen load every time without incident. I can generate fresh Logcat traces or a Crashlytics report as soon as you point me to the exact build you need them from. Turn-around is important to me, so I’ll supply the full source as soon as we agree to proceed and will test your fix immediately. Deliverables • Updated project code (Git diff, patch, or PR) that elimi...

    €31 Average bid
    €31 Gns Bud
    119 bud

    I’m building an end-to-end conversational AI that handles text and real-time voice in four languages, guides users through staged enquiry and reservation flows, and syncs seamlessly with our existing systems and website. The core must expose a secure WebSocket API for live messaging, catalog synchronisation, and remote-tool protocols so my in-house apps can push or pull data without lag. Front-of-house, I need a portal-grade web stack: server-side rendered pages, a multilingual CMS, and a media pipeline that keeps images and audio optimised across devices. Back-of-house, the platform has to talk to the channels where our customers already are. For this phase I want native connectors for LINE OA, WhatsApp Business, Facebook Messenger, Telegram, Instagram, Google Business, TikTok, and...

    €1829 Average bid
    €1829 Gns Bud
    268 bud

    I’m building a Python solution that automatically flags spam in my personal inbox. The pipeline should read raw message text, run it through classic NLP cleaning—then let a Naive Bayes model trained on TF-IDF features decide what is junk and what I actually want to see. I will be working exclusively with publicly available email corpora, so nothing proprietary needs to be handled. Key pre-processing I need implemented: • Tokenization • Stopwords removal • Stemming or lemmatization The stack is already chosen: Scikit-learn, Pandas and NumPy under Python. Once training is complete, I’d like a concise script or notebook that can: 1. Load a fresh batch of .eml or plaintext messages. 2. Output a CSV (or similar) labeling each as spam or ham. 3. R...

    €8 / hr Average bid
    €8 / hr Gns Bud
    44 bud

    I want to bring a new social media idea to life through a purpose-built Android application. This is a full application development project, so I need someone who can take the concept from blank screen to a polished, Play-Store-ready release. The core scope is native Android—Java or Kotlin is fine—covering everything a modern social platform needs: secure sign-up and login, user profiles, an endlessly scrolling feed, basic interactions such as likes or comments, plus real-time push notifications. If you’re comfortable setting up a lightweight backend as well (Firebase, Supabase, or another scalable option), that’s a bonus, though I’m open to your recommendations. Deliverables I expect: • Production APK ready for testing and release • Clean, wel...

    €422 Average bid
    €422 Gns Bud
    189 bud

    I'm looking for someone to create a Minecraft Java Edition Survival Multiplayer (SMP) server for me and my friends. Key Requirements: - Host on Minecraft Java Edition - Focus on Survival gameplay - Assistance with mods/plugins is a plus Ideal skills and experience: - Experience with Minecraft server setup - Knowledge of mods and plugins - Familiarity with Minecraft Java Edition gameplay mechanics

    €497 Average bid
    €497 Gns Bud
    36 bud

    I’m an Indian travel-agency owner who already runs a proven bot that books VFS Portugal National-Visa slots for applicants in Angola—something I’ve done successfully many times. Demand from my clients is growing fast, so I want to team up with a serious, long-term partner who can keep those appointments flowing in real time. Here’s what matters: • You must operate the same “machine” – an automated system that grabs fresh slots on the VFS Portugal site within seconds. • Payment is released only after each booking shows as confirmed on the VFS portal. • I’m interested in an ongoing collaboration rather than one-off deals, so reliability and transparency are essential. If you can demonstrate past results in this exact nic...

    €108 Average bid
    €108 Gns Bud
    84 bud

    I already have five AI-generated HTML toolkit pages—one for each of my coaching services. Each page contains multiple tabs that let me move between sections and enter information during a session. What I cannot do yet is keep that information once the browser closes. Here is what I need solved: every time I finish a session I want to press “Save”, have the client’s session notes and service-specific details written to a secure database, and be able to pull that record back up the next time we meet. On the front end the tabs and existing input fields should work exactly as they do now; on the back end I need reliable storage plus a quick way to find and filter past records no matter which of the five services they came from. Deliverables • Database schem...

    €116 Average bid
    €116 Gns Bud
    208 bud

    Open to candidates worldwide with native‑level or near‑native English and strong communication skills We’re hiring a well‑spoken Software Engineer who can join client calls, explain technical topics clearly, and communicate with confidence. You’ll receive paid training before every client call so you fully understand the project, expectations, and communication style. This is a long‑term role with stable weekly work, paid preparation time, and strong monthly compensation once you begin handling client meetings independently. Responsibilities - Join scheduled client calls during US business hours (EST/CST/MST/PST) - Communicate clearly and confidently in native or near‑native English - Understand programming concepts and explain them in simple, professional language - Attend ...

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

    *Certified Solution Developer* I need an IBM App Connect Enterprise (ACE) specialist who can jump straight into hands-on message flow development. The assignment centres on building and optimising flows that connect several airline-industry applications, so familiarity with patterns common to reservation, ticketing, or departure-control systems will be a real advantage. You will receive detailed interface contracts, sample payloads (JSON, XML), and access to our Dev MQ queues and REST endpoints. From there I expect you to design, code and unit-test the flows, making smart use of ESQL, JavaCompute nodes or Mapping nodes as appropriate, and package everything so it can be promoted through our existing CI/CD pipeline (Git, Jenkins, BAR files). Please outline the airline-related IBM ACE or ...

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

    BLOCKCHAIN DEVELOPER (ZK & CROSS-CHAIN) Exp: 6 yrs We are looking for a passionate Blockchain Developer to take ownership of smart contract development, ZK proof integration, and our cross-chain payment pipeline. You will work directly with our Lead/Project Manager and a team of engineers to build the protocol's core infrastructure. Key Responsibilities: Design, develop, and deploy smart contracts for our ConfidentialPayroll protocol across Ethereum, Solana, and other VMs Integrate zero-knowledge proof systems (Ligero/Arc) for transaction privacy and compliance Implement cross-chain settlement mechanisms using Circle's CCTP and Hyperlane Integrate FHE (Fhenix/Zama) for encrypted state management of payroll rosters Build and maintain the backend API orchestrator (Expr...

    €2396 Average bid
    €2396 Gns Bud
    34 bud

    I have a Java application split into two Spring Boot services: • a web-based backend that exposes REST APIs over MongoDB • a standalone CLI client that consumes those endpoints I need thorough functional testing focused on the API layer. Using Postman against the backend (and the CLI where it helps reproduce flows), please verify that every call involved in data retrieval, data updates, authentication and authorisation behaves exactly as documented. Response payloads, status codes, and headers must align with spec, and any deviation or edge-case failure should be captured. Your final hand-over will be: 1. An organised Postman collection with all test cases and environment variables. 2. A concise report detailing steps, actual vs. expected results, and any defects f...

    €35 Average bid
    €35 Gns Bud
    44 bud

    # Android App Development Requirements ## Project Overview I need a custom Android casino site's developed with my own branding and original code. The app must not use copyrighted code, assets, logos, or branding from any existing application. You can copy the casino site's but only features copy, make a fully real money casino site. ## Budget * Budget: ₹5,000 – ₹12,000 * Fixed price (as agreed) ## Deliverables The developer must provide: * Complete Android Studio source code * APK file * AAB file (if available) * Backend source code (if applicable) * Database files and setup instructions (if applicable) * Admin Panel with login credentials * API documentation (if applicable) * All project assets (icons, images, etc.) ## Ownership After the final payment: * I will...

    €95 Average bid
    €95 Gns Bud
    44 bud

    I am building a fully self-hosted, real-time voice assistant on top of LiveKit. The system must ingest the caller’s audio stream, perform on-premise voice recognition, run natural-language processing with contextual comprehension, and respond intelligently as a first-line customer-support agent—all without relying on any third-party SaaS such as Vapi, ElevenLabs, or similar hosted APIs. Open-source or locally runnable models are fine; cloud subscriptions are not. Core flow • LiveKit delivers the audio track in real time. • Your pipeline converts speech to text, keeps multi-turn context, and routes it through an NLP layer capable of understanding intent and maintaining conversation state. • The agent then generates the textual reply that my existing interfa...

    €102 Average bid
    €102 Gns Bud
    40 bud

    I want an Android-based tool that helps me understand and optimize resource management in Rise of Kingdoms. The focus is on three intertwined tasks: • Resource tracking – a clear, real-time view of how much food, wood, stone, and gold I currently hold and how quickly each is produced or consumed. • March planning – an at-a-glance scheduler that shows when troops will return, how their movements affect resources, and the best moments to launch the next march. • Gameplay analytics – simple charts or tables that reveal patterns in my daily play so I can spot waste, downtime, or missed gathering opportunities. Core requirements 1. Native Android solution (Java or Kotlin). 2. Clean interface that sits over the game or works from exported game logs/screen...

    €384 Average bid
    €384 Gns Bud
    148 bud

    I run a small community on PebbleHost and need the entire server environment rebuilt so both Java and Bedrock players can hop in without work-arounds. Stability and ease of entry are my top priorities, followed by a clean administrative tool-set and an automated “Xbox Friend Bot” that keeps the server visible in the Bedrock friends tab. What I already have • A fresh PebbleHost plan ready to configure • A curated list of administrative plugins and mods (Paper / Purpur builds, GeyserMC, Floodgate, LuckPerms, Essential administrative add-ons, etc.) • Access to the existing world files and player data that must be preserved What I need from you 1. Spin up the new instance, apply the correct Java version, optimise JVM flags and configure GeyserMC + Floodgate so ...

    €128 Average bid
    €128 Gns Bud
    53 bud

    # Brand Identity Design for Selenium Boot (Open Source Developer Platform) ## Project Overview Selenium Boot is an open-source Java automation framework for Selenium with the vision of becoming the **"Spring Boot of Selenium."** We are looking for a creative designer to build a modern, professional, and memorable brand identity. ## Requirements Design an original and minimalist logo that reflects: * Software development * Automation * Simplicity * Innovation * Reliability * Open-source community ## Deliverables * Primary Logo * Logo Icon / Symbol * Wordmark * Light & Dark Versions * Favicon * Source Files (AI/SVG/EPS) * PNG (High Resolution) * Brand Color Palette * Font Recommendation ## Design Style * Modern * Minimal * Professional * Timeless * Scalable * Developer...

    €7 Average bid
    €7 Gns Bud
    18 bud
    Windows Lab Cloud Uploader
    3 dage left
    Godkendt

    I need a small-footprint Windows desktop application for my diagnostic laboratory that will automatically push every completed blood-test (and any other sample) report from our multiple local machine to a VPS cloud server as well as local server and map the data to the specific patient ID related report. I’m not tied to a particular provider—AWS, Google Cloud, Microsoft Azure, or any other reliable VPS will work—so long as the solution keeps the upload process stable, secure, and easy to configure. Core flow •
The moment a report is generated or dropped into a “finished” folder, the app should detect it, encrypt or otherwise secure the file, and send it straight to the designated cloud location. •
A lightweight dashboard should let me set or cha...

    €17 Average bid
    €17 Gns Bud
    21 bud

    I need an experienced front-end developer to structure a new Vue.js codebase around a robust, reusable component architecture. The project is green-field, so you will set up the initial scaffolding, create a small library of base and shared components, and demonstrate best practices that make the UI easy to scale and maintain. Key goals • Spin up the project with Vue CLI (or Vite) configured for modern ES modules and hot-reload. • Establish a sensible folder structure that separates layout, shared, and feature-specific components. • Build a handful of illustrative components (navigation bar, card, modal, form elements) showing props, slots, and emit patterns. • Document the conventions and patterns you choose so the rest of the team can contribute confidently. Accepta...

    €361 Average bid
    €361 Gns Bud
    245 bud

    I need twelve Android users to help me measure how my app affects battery life during heavy, real-world use over a 14-day window. The sole focus is performance, specifically battery usage when the phone is under high-usage pressure—think continuous video streaming, navigation, gaming, or other power-hungry tasks. What you’ll do • Install the latest build from Google Play (link provided after hire). • Use the app for at least two hours each day while your device is already running another intensive activity. • Capture screen recordings or annotated screenshots that show battery percentage at the start and end of every session. • Export Android battery stats and simple logcat excerpts once daily (I’ll share clear, step-by-step instructions&mdash...

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

    I’m ready to tighten up the entire build-to-deploy flow for an application that already lives on Amazon Web Services. All workloads will remain on Linux-based EC2 instances, so every automation step—from provisioning to deployment—must focus on that environment. Here’s what I need from you: • Infrastructure as Code scripts (Terraform or CloudFormation) that spin up and configure the EC2 fleet exactly the same way every time. • A clean CI/CD pipeline (Jenkins, GitHub Actions, or a tool you recommend) that builds, tests, and pushes releases straight onto the EC2 hosts with zero-downtime or blue/green capability. • Security hardening and IAM policies tailored to EC2 so the instances are locked down yet still usable for automated tasks. • Moni...

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

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