Linear programming softwareJobs

I'm in search of an accomplished Software Developer to build a comprehensive, cross-platform (Windows, MacOS, Linux, and Web application) back office solution. Your expertise should include: - Python and PostgreSQL at a proficient level - Crafting interfaces for absorbing data from various sales applications - Creating systems compatible with various platforms Features to be implemented would be: - Data import/export functionality - User Management - Reporting & Analytics - Accounting functionalities Moreover, when it comes to data import, I'd like automatic scheduling, data validation, and error handling to be included. Freelancers with experience in these areas will be given priority. The ability to work efficiently and meticulously is fundamental to this ro...

I'm urgently seeking a profound Java developer with extensive experience in Springboot. Key responsibilities include: - Code, test and troubleshoot programs utilizing appropriate hardware, database, and programming technology. - Refine data and format the final product. - Maintain and modify programs; make approved changes by amending flow charts, develop detailed programming logic, and make changes to codes. Skills and Experience: - Proficiency in Java - Significant experience in Springboot development. - Familiarity with Agile development methodologies. - A problem-solving attitude. While I can't get more specific about the application's nature, it could potentially fall into any or all of the mentioned categories. I need the project completed ASAP, so ...

I need...requirements for the Python project include: - Develop an advanced road lane and object detection system. - Incorporate the ability to detect and classify different objects such as cars, pedestrians, bicycles, and interpret signals as well as distances on the road. - The project should be built on strong error handling capabilities. The ideal freelancer should have: - Strong experience in Python programming. - Expertise in object detection algorithms. - Solid background in image processing or computer vision. - Familiarity with road traffic rules and signs is a plus. I am expecting a timely and error-free delivery. Looking forward to working with an experienced professional who can meet these requirements. IMPLEMENTAION OF THIS VIDEO

The envisioned tool I require is open for development in just about any programming language, be it Python, JavaScript, or PHP. Primarily, it needs to have two essential features: 1. **Domain Checking**: The tool should be capable of verifying the validity of the domain part of an email id to ensure it actually exists. 2. **Rating and Scoring**: Post domain checking, it should be able to rate and score the email id moderately. The criteria for rating and scoring would have to be worked out. Overall, I seek a developer who is experienced in creating such tools and has a solid understanding of email validation techniques. Familiarity with email servers would also be a plus.

In order to streamline my operations, I'm looking for a skilled Java developer to construct a desktop application focusing on task automation. Specifically, the software should excel in: - Automated Data Entry: The application should be able to efficiently automate data entry tasks, improving productivity and minimizing errors. Ideal candidates should have extensive experience in Java development, primarily in creating desktop software. Familiarity with task automation, particularly for data entry, would be beneficial. Familiarity with user-friendly design and effective data handling techniques will also be important.

...project encompasses both the hardware (circuit design, component selection, and assembly) and software (Arduino code programming) aspects. The ideal candidate will have a strong background in electrical engineering and extensive experience in Arduino programming. Key Responsibilities: Project Management: Oversee the entire project from conception to completion. This includes defining project scope, milestones, timelines, and deliverables in collaboration with our team. Circuit Design: Design and prototype the electronic circuitry required for the project. This involves selecting appropriate components, creating schematic diagrams, and ensuring the design meets all functional requirements. Arduino Programming: Develop, test, and debug Arduino code that meets...

I'm looking for a skilled developer capable of building a church-specific mobile application using SWIFT. The app will have several key features: - Sermon streaming: The app should be able to send direct the audio from Macbook(audio input source) for translation (GCP) and send back t...streaming: The app should be able to send direct the audio from Macbook(audio input source) for translation (GCP) and send back the text-to-speech (GCP) to Zoom as Audio-in. Ideally, you will have a deep understanding of integrating Google Cloud APIs, including Speech-to-text, AutoML translation and text-to-speech. I will provide all required APIs for development. Strong experience in SWIFT programming is a must for this project. Your experience in building similar apps or projects will be a g...

I need a specialist to create a software solution that can streamline order management and provide a comprehensive vision on customer data. Key responsibilities: 1. **Order Management:** - Implementation of order tracking to keep tabs on project progression - Setting up automated notifications, easing the process of updating customer information regarding their orders - Developing a system to organise orders by date and time, using a priority approach 2. **Customer Data Management:** - Building up customer profiles with inclusive data about all interactions - Recording order history, to provide an overview of customer orders - Establishing customer communication logs, maintaining a good record of all customer communication The apt freelancer should ...

I need an experienced Frappe / ERPNext developer, with an excellent understanding of Version 15, to assist me in the enhancement and migration of my system. Ideally conversant with Python programming language including the following Python Libraries python-docx , py2pdf, python-Dropbox Our ERPNext system is deployed on our own servers and is not on the Frappe Cloud Our current ERPNext system has been modified using an external app and several Python functions have already been added and are partially/ Fully functional, our requirements is to expand these functions and develop this further, all current code will be available via GitHub as required Scope Requirements We have several modified existing and new doctypes within our system, our requirements are: we need to be able to ext...

I'm in need of expert assistance to bring up-to-date my ringtone app develope...also want it compatible with Android 14. Key Tasks: - Fix the recurring crashing that happens upon launch. - Tackle responsiveness of buttons within the app. - Address the problems of incorrect data display. - Ensure compatibility with Android 14 after bug fixes. The above tasks are crucial to improve the app's functionality and user experience. Ideal Skills Required: - Proficient in Java programming and application development. - Experience with Android app development and updates. - Strong debugging and problem-solving skills. Please note that I haven't identified any specific new features or interface design requests as of now but being willing to possibly work on UI enhancements ...

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...interview for a Software Engineering position. The end-goal is to effectively showcase my skills and experiences, ensuring that I stand out among other applicants. I'm specifically targeting IT employers. Ideal freelancers for this project would be: - Skilled in professional resume writing, particularly in the IT sector - Familiar with the software engineering field and its requirements - Aware of what IT employers look for in prospective candidates - Experienced in tailoring resumes for specific roles and companies The project involves: - Reviewing my current IT resume - Providing constructive feedback - Rewriting sections as needed to improve clarity, impact, and relevance - Helping me highlight my unique selling points - Ensuring the final resume is well-suit...

...Arduino project that collects data from various sensors and uses Wi-Fi for communication. I necessitate the involvement of skilled freelancers in programming and radio frequency configuration. (EVIL CROW RF V2) is what the device is that needs to be programmed/ a web server controller through Arduino IDE [Removed by Freelancer.com Admin for offsiting - please see Section 13 of our Terms and Conditions] Specifically, I require the creation of a program that: - Effectively collects data from choosen sensors - Handles communication via Wi-Fi - Ensure smooth data relay from the sensor to the server Skills and Experience: - Proficiency in Arduino Programming - Understanding of radio frequency and how it interacts with Wi-Fi - Previous experience in similar projects is antic...

I’m in need of a highly proficient programmer familiar with Odoo accounting software. Your task would be to build custom features and integrations. Key Features Required: - Bank reconciliation - setting up a custom report for equity movement - Setting up chart of accounts - Opening balance Ideal Skills: Strong expertise in Odoo software and its accounting applications is a necessity. Previous experiences of developing similar software would be a major advantage. As I do not have a pre-existing accounting software, ability to create a robust, error-free platform from scratch is critical. Understanding of diverse business processes to build smart integrations is also required.

I am in need of a proficient Excel automation specialist. This job requires updating an existing workbook with new data, automating the creation of rows, columns, and formulas and allowing for an undated workbook to be downloaded without having to re-create all the formulas etc. I am open to the choice of programming language used for the Excel automation, eager to discuss your expertise and preference. Here are the expected tasks: - Modify an existing workbook with new information - Automate the import of current workbooks - Automate the creation of rows, columns, and formulas The frequency of these tasks will be dictated by our data download schedule which is done on an as-needed basis per job schedule. Ideal candidates will have a solid background in Excel automation and demons...

...transaction history for players. Additional Features: Integrated live chat for player interaction during games. Advanced security features to protect user data and financial transactions. Ability to offer bonuses, promotions, and loyalty programs to players. Freelancer Requirements: Proven experience in developing online gaming platforms, preferably bingo or similar games. Knowledge of web programming and payment system integration. Ability to work autonomously and meet established deadlines. Good communication and willingness to collaborate in the development process. If you have the necessary skills and are interested in this project, please send your proposal detailing your relevant experience, an estimated timeframe, and your rate for the project. I look forward to discuss...

I need a competent software developer to develop the software in my vending machine The ideal candidate should have: - Technical expertise in Java, Python, or C#. - familiar with TCN model vending machine - Extensive experience in application development as this will be the major focus of the project. When bidding, please highlight your experience with the required programming languages and any past application development projects you've completed. This information is crucial in my decision-making process. Skilled and experienced developers are most welcome to make bids.

...for industrial machines. Below are the specific aspects we look at: - Previous experience in programming Arduino for industrial robotics. We value examples of prior relevant projects. - Proficiency in developing custom codes and creating circuit designs to fit unique project requirements. - Strong understanding of hardware integration, though this is not a primary task for this job. - An innovative problem-solver, capable of suggesting improvements or alternatives when needed. Your task will mainly involve developing unique codes and crafting circuit designs in the context of industrial machines. At its core, this project requires a technical mind to draw up and implement the necessary programming and design solutions. Tldr: I need code for a sorting conveyor that sc...

I'm seeking a software developer with experience in algorithms for text interpretation and payment gateway integration. The software should be capable of interpreting dreams accurately leveraging deep sector knowledge. Key Features: - Interpret dreams based on relevant information provided by individuals. - Software must be capable of supporting Italian, English, Spanish and French languages. - The software should also facilitate a payment function for rendering this service online. Ideal Skills: - Extensive experience with text interpretation algorithms and machine learning. - Proficiency in payment gateway integration. - Familiarity with multi-language support. - Knowledge on dream-related studies for a more precise analysis will be a bonus. This proj...

I'm seeking a developer well-versed in Python and has substantial understanding in deep reinforcement learning. My aim is to apply this algorithm in gymnasium processes. Ideal Skills and Experience: - Proficient in Python programming - Extensive knowledge in deep reinforcement learning algorithms - Experience in reinforcement learning - Ability to model reliable algorithm Specific environments include: - Cartpole - Racetrack

...team to conduct comprehensive testing and ensure the quality and stability of the application at all development stages. Stay updated on the latest trends and technologies in mobile app development, especially regarding API integration and dimension recognition. Requirements: Previous experience in successfully developing and launching mobile applications for iOS and Android platforms. Strong programming skills in languages such as Swift (for iOS) and Java/Kotlin (for Android). Familiarity with API integration and the ability to work with technical documentation to implement integration with the existing system. Experience in implementing real-time tracking and push notifications in mobile applications. Preferably, previous experience in developing messaging or logistics applica...

I'm seeking a skilled developer to create a crypto arbitrage bot. This bot should have compatibility with Binance, Kraken, Bybit, and Bitstamp exchanges. The main focus is on an efficient arbitrage trading strategy. Key Requirements: - Allowing trading on the aforementioned platforms - Implement a profitable arbitrage strategy Ideal Freelancer: - Experience in programming trading bots - Familiarity with cryptocurrencies and exchanges - Previous experience in Arbitrage strategy would be advantageous.

...developer, specifically someone who has experience with Telegram's bot interface and web scraping. The primary purpose of the bot should be to retrieve 'out of stock' product updates from a specified website and then alert my Telegram group on a daily basis. Key Responsibilities: * Building a Telegram bot * Implementing web scraping to retrieve 'out of stock' notifications from a particular site * Programming the bot to automatically disseminate these updates to my Telegram group every day Ideal Skills: * Excellent knowledge of Telegram Bot API * Proficient in web scraping techniques * Experience with automatic message/post scheduling The answer to how the 'out of stock' notifications should be formatted was not specified, therefore, I'd...

I'm looking for an experienced DevOps developer with specific skills in: - Cloud infrastructure management: You should know how to maintain, monitor, and troubleshoot infrastructure systems in Google Cloud Platform (GCP), and ensure high availability and performance of the applications. - Programming language: Since our Infrastructure as Code is written in yaml, you must have strong experience in using yaml for scripting and defining infrastructure. The ideal candidate will be a GCP certified professional with a strong DevOps background. Your experience with similar projects and your understanding of best DevOps practices will be invaluable to us.

I'm in need of a contractor to design and integrate a chatbot on my website. The work has mostly been done in ManyChat and a product I have purchased. A lot of the flows have been designed. Need integration for website, FB, WhatsApp - others later. Expected Skills: - Proficiency in chatbot platforms and programming languages. - Demonstrable experience in creating chatbots for complex tasks. - Understanding of bot-human interaction with a focus on user experience. Deliverables: - A fully functional chatbot integrated into the website. - A comprehensive list of questions/answers for the chatbot. - Testing and debugging before the final handover. Your proposal should demonstrate your capabilities and previous experience in chatbot creation for commercial websites, particu...

I am seeking a versatile, full-stack developer to assist in the creation of an informative website and utility mobile app. Ideal Skills and Expertise: - Comprehensive knowledge in both front and back-end development - Familiarity with a variety of programming languages as I do not have a preference - Experience with both website and mobile app development - Ability to translate my ideas into a user-friendly digital platform Project Objectives: - Develop a secure, mobile-friendly website that serves as an informative platform - Create a utility app that complements the website and enhances usability - Use best coding practices ensuring the website and app perform optimally on all devices

I'm looking for a skilled MERN stack (MongoDB, , React.js, Node.js) developer to convert my existing WordPress Plugin into a cutting-edge React/Node.js application. Skills and Experience Needed: - Proficiency in MERN stack technologies, notably for server-side rendering. - Strong experience translating WordPress software to React/Node.js. - Knowledge of UI/UX principles to enhance interface design. Job Scope: - Evaluate current WordPress software for conversion into a React/Node.js application. - Improve software's performance and scalability. - Enhance user experience and design interface considering modern design practices. Gotta know how to use Github and be very frequent in your updates. Building of both the Front-end and Server-side IS required. We only h...

I'm seeking a proficient Python and Javascript trainer to guide me in developi...developing a specific web application. Your role won't just be to explain the fundamentals, but to provide hands-on training throughout the development process. Skills and Experience: - Proficient in Python and Javascript - Proven track record in teaching programming - Experience in web application development The perfect trainer would help me understand the languages at depth since the end goal is not simply learning programming. It will involve actively using Python and Javascript in a real world project, designing and coding a web application. So, anyone with experience of building a web application from s...

I urgently need an experienced freelancer to create project management spreadsheets. Here is what I'm specifically looking for: - Proven experience in creating project management spreadsheets. - Quick turnaround as the project is needed ASAP. - Deliver spreadsheets that effecti...looking for: - Proven experience in creating project management spreadsheets. - Quick turnaround as the project is needed ASAP. - Deliver spreadsheets that effectively track and manage project information. - Successful freelancers will need to include detailed project proposals with their applications. This project requires a freelancer with advanced knowledge in Excel or other spreadsheet programming. If you think you're the perfect candidate, don't hesitate to apply. I look forward to se...

I'm looking for someone proficient in C programming to develop a Horner Programmer with a key functionality: script automation. This software is specifically targeted towards automated pump control systems. Desired Skills and Experience: - Highly skilled in C programming. - Experience in creating software for automation purpose. - Familiarity with Horner's method for polynomial evaluation. - Background in developing software for industrial use, particularly pump control systems, is an added advantage. The main goal of this project is to achieve efficient script automation in C for pump controls, using the Horner's method. If you have the right skill set, do not hesitate to bid. Your work would be so valuable for me.

I require a proficient software developer to craft a virtual pet software. This should be engaging, allowing users to care for and interact with their virtual pets directly on their computers. The software should feature: - A variety of animated pets (dogs, cats, birds). Preferably, these animations should be a combination of 2D and 3D. - An interactive interface that lets users feed, play, and train their pets, as well as other realistic animations replicating human actions. The ideal candidate would be versed in: - Software development, specifically in relation to game or virtual pet software - Sufficient knowledge of 2D and 3D animation - Understanding of user engagement tactics to create an immersive experience.

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I need a skilled programmer to bring their skills to my Access 2013 database. Currently, it's producing too many blank pages when printing and showing signs of programming issues which require debugging. The main goal of this project is to: - - Enhance user experience - Streamline workflow processes This task should be completed within 1-2 weeks. It will most likely take a few hours. The suitable freelancer should have considerable experience with Access 2013, problem-solving skills, work over the phone for step by step debugging working with our in house tech, and a good understanding of how to debug database software as well as enhancing its overall performance. Please don't hesitate to get in touch if you feel you'd be a good fit for this project.

I am in need of a professional who possesses skills in both ESP32 programming and Flutter app development. The main task is to add new services to an existing Flutter app. What You Need: - Experience in ESP32 programming - Proficiency in Flutter app development - Understanding of service integration in Flutter apps We need an addition to the software and application. We need a selection tab for RTCM messages. A tab in the application where the user can select the messages they want to activate. There will be messages that are already enabled by default and those that will be possible to select. This must be present in all software that uses GNSS. Regarding Radio Receivers, we have two models, the Radio Receiver without GNSS, and with GNSS. Only the Radio wit...

...receive attachments like images, videos, documents and audio. Specific functionalities for the audio attachments should accommodate: • In-app recording and sending of audio files. • Playback feature for the received audio files within the app. The ideal freelancer should have a proven track record in developing similar platforms, with a keen eye for detail and exceptional proficiency in required programming languages. Efficient, effective, and timely delivery is crucial....

I'm experiencing an error on my WooCommerce site when trying to ch..."WP Cloud Plugins - Box (Lets-Box)" plugin, and was confounded by updates of 7 other plugins during this time. Unfortunately I don't remember which plugins were updated—however, Paypal was one of them. This job requires a freelancer with the following skills and experience: - Extensive knowledge in fixing WooCommerce checkout errors - Proficiency in PHP, CSS, JavaScript and other relevant programming languages - Capability to debug and solve payment processing issues The ultimate goal is to restore my e-commerce site to a fully functional order processing state. Your role will be to troubleshoot and fix the error to ensure smooth checkout process for customers. Timely and quality deli...

...low-resolution images to high-resolution images utilizing SR3 in a Python notebook. - Train this model using PyTorch on the DeepLesion dataset. We won't focus on any specific subset of images - we want to include all available images in the training process. - If necessary, implement intensity scaling to ensure the highest quality image output. Skills and Experience Required: - Proficiency with Python programming - Experience with PyTorch and image processing and GPU - Knowledge of SR3 method would be a significant advantage - Familiarity with the DeepLesion dataset or similar would be beneficial By enhancing the quality of these images, we anticipate a substantial move towards improved outcomes in our project. The successful candidate should demonstrate success with simil...

...located are still under consideration, so the system needs to be flexible, allowing for both site-wide and specific page deployment. While I haven't yet finalised the exact types of banners to be used, the desired coder needs to take into consideration potential usage of a variety of formats, ranging from static images to animated GIFs and interactive banners. Ideal Skills: - Proficient in PHP programming - Experience in integrating advertisement systems into websites - Knowledge of various banner ad formats The timeframe for project completion is within a month. The ad sections need to be fully responsive and show different ads depending if user has desktop or smartphone. Admin management session with the function controls need to be in existing admin page. Advanced ...

...an expert who can craft a video tutorial on how to run the Vehicle-CV-ADAS project from the shared GitHub repository on my Visual Studio Code. This project involves a solid understanding of coding and VS Code operations. The ideal freelancer for this task would: • Have a comprehensive knowledge of Visual Studio Code • Be adept at creating easy-to-follow video tutorials • Have considerable programming expertise • Be proficient in using GitHub The end product should be a step-by-step instruction video that I, as a beginner, can easily follow to run the project on my VS Code. I already have both GitHub and VS Code installed, so no need to cover installation procedures. The tutorial should cover: • Accessing the GitHub repository • Cloning/importing...

I have a simple need for some assistance in selecting properties in my company's SAP Business One system. This involves configuring various item numbers with a specific set of options for about 400 items. I will provide the .XLS file with the options to select for each SKU and will show a basic demo.

...tailored software for my GoDaddy website. The main objective of this software would be to facilitate clients and contractors in estimating material costs for fences and decks. Crucial functionalities include: - Materials Estimation: Capability to accurately determine the quantity of materials required based on the specifics of the project. - Cost Calculation: A feature that determines the cost of materials based on the data from the estimation function. - Quote Generation: Using the cost calculation, the software should be able to generate comprehensive and detailed quotes for clients and contractors. The ideal candidate for this gig should have experience in creating similar platforms, preferably with a good understanding of the GoDaddy platform. A solid backgrou...

I'm seeking a proficient bid writer specialized in IT, particularly software development. Your primary task will be crafting a compelling bid to secure funding for a software development project. Key responsibilities: - Understanding the core aspects of our software development project - Writing an engaging and persuasive bid for project funding Ideal Skills and Experience: - Strong background in IT, ideally software development - Proven experience in bid writing and securing project funding - Excellent writing, communication, and persuasive skills - In-depth understanding of bid writing protocols in the IT industry - Ability to convey technical jargon into clear, concise language Your bid will pave the way for our upcoming project's financial...

I require an expert in CODESYS software to enhance my industrial automation project. You will be expected to: - Object Oriented Programming ( Interfaces, Classes, Methods) - Knowledge of the element collection library in CODESYS ( ELEMENTS, Queues)

I am on the lookout for a proficient Java developer to create a robust backend system for my project, with a prime emphasis on API integration. The exact Database Management System to be used has not been specified, so you have the flexibility to choose the one that works best within the project parameters. Ideal skills and qualities include: - Mastery in Java programming - Professional experience in backend engineering - Capability to integrate APIs smoothly - Adaptability in selecting and working with Database Management Systems Your concrete understanding of scalable system architecture and data modeling should be evident. In addition, mastery in cloud-based services will be advantageous. Please make sure you're comfortable with these requirements before making a bid.

I'm urgently looking for an expert who can integrate with my Twitter accoun...an expert who can integrate with my Twitter account to enable it to automatically respond to certain tweets. Here's what I expect: - The integration should automatically reply to tweets from a list of specific accounts. - The system should use the twitter lists function to determine the accounts that will receive automatic replies. Ideal candidate should have strong proficiency in programming, API, and have experience with as well as Twitter integration. The integration will likely go through the HTTP module in make.com. If you have prior experience with such tasks, do share your previous projects too. Time is of the essence here, so if you can deliver quickly, that would be beneficial.

I am looking for an IoT expert to develop a low-cost hardware-firmware solution for a remote proximity sensor monitoring. The solution should handle digital input from PNP or NPN proximity sensors. The hardware should include an onboard SD card for local data storage. The firmware needs to be reliable for continuous sensor data reading and uploading on cloud.

...Functionality: User registration and login features are essential. Users should be able to select data plans and activate eSIM within the app. Integration of payment gateways for transactions is required. Skills and Experience: Proven track record in developing for both Android and iOS platforms. Strong proficiency in cross-platform development tools. Expertise in React Native, Swift, or Kotlin programming languages. Prior experience in implementing payment gateways is necessary. Familiarity with eSIM activation is preferred but not mandatory. Responsibilities: Develop a seamless app supporting both iOS and Android platforms. Implement user registration and login functionalities securely. Enable users to select data plans and manage eSIM activation within the app. Integrate a ...

I am looking for someone skilled in creating a conversion tool. This tool will specifically convert PDF files to CSV f... Requirements: - The tool should extract text data, tables, and images from the PDF files. - It should ensure accurate conversion, maintaining the original layout and formatting as much as possible. The initial task is to convert less than 10 PDF files, with the potential for more in the future. Ideal Skills: - Experience in data conversion between PDF and CSV files - Proficiency in any programming language that is capable of creating said tool - Attention to detail to ensure high-quality conversions - Good problem-solving skills to navigate potential issues during conversion. Bid with proof of your capabilities in this field, I am excited to start this coll...

I need an expert developer to collaborate on a strategic API development. As the project specifics weren't stipulated, we're looking for an adaptable individual compete...impeccably serves multiple functionalities for the intended application. Primarily, this would translate into: - Implementing user authentication - Facilitating efficient data retrieval - Allowing effective data manipulation Ideally, we are seeking someone with experience in mobile app and web applications, as this flexibility enhances integrated system construction. Existing mastery of diverse programming languages is a plus, although specific expertise can be settled on during the collaborative process. Remember, the core purpose is to create a multi-functional, user-firendly API for an application y...

I am in immediate need for a developer proficient in PHP and PayPal APIs. The project entails creating a PHP script that seamlessly ...proficient in PHP and PayPal APIs. The project entails creating a PHP script that seamlessly utilizes the new PayPal API to retrieve the details of the last transaction. While the specific transaction details required have not yet been finalized, a proper understanding of extracting information from similar APIs is essential. Key skills and experiences needed for this task include: - Expertise in programming with PHP - Thorough understanding and experience with PayPal APIs - Ability to begin work immediately and complete tasks swiftly. Please note that further specifics regarding the transaction details required will be shared with the selected f...