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I’m refining an existing REST API and need a skilled developer who can jump straight into the current codebase and modify several endpoints without breaking backward-compatibility. The tasks in scope are clear: • Adjust the response data format so it’s consistent with our latest JSON schema. • Change specific request parameters—some fields are being renamed, a few are becoming optional, and one new parameter will be required. • Enhance the overall functionality of these endpoints, adding small but important business logic checks that currently live in the client layer. You’ll receive: – Postman collection and environment – Up-to-date API documentation (OpenAPI 3.0) – Access to a staging server plus a Git repo for pull requests Acceptance criteria: 1. All modified endpoints return the new schema correctly and pass existing unit tests. 2. Updated parameters are documented in the OpenAPI file and rendered in Swagger UI. 3. New logic is covered by at least three new unit tests per endpoint. 4. No regression in performance based on our simple k6 load script. If you’ve previously worked on RESTful services with frameworks like Express, FastAPI, Django REST, or similar—and you’re comfortable writing clean, well-tested code—let’s get started.
Projekt-ID: 40050784
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35 Freelancer bieten im Durchschnitt $22 USD für diesen Auftrag

Hey Herbert B., I just went through your job description and noticed you need someone skilled in Backend Development, RESTful, Software Development, Git, API Development, Software Testing, FastAPI and JSON. That’s right up my alley. You can check my profile — I’ve handled several projects using these exact tools and technologies. Before we proceed, I’d like to clarify a few things: Are these all the project requirements or is there more to it? Do you already have any work done, or will this start from scratch? What’s your preferred deadline for completion? Why Work With Me? Over 180 successful projects completed. Long-term track record of happy clients and repeat work. I prioritize quality, deadlines, and clear communication. Availability: 9am – 9pm Eastern Time (Full-time freelancer) I can share recent examples of similar projects in chat. Let’s connect and discuss your vision in detail. Kind Regards, Zain Arshad
$10 USD in 1 Tag
3,3
3,3

Hello! This REST Endpoint Enhancement & Tweaks project aligns perfectly with my experience. I can approach it with a clear, engineering-driven mindset, ensuring seamless modifications without breaking backward compatibility. Having previously worked extensively with Django REST Framework, I understand how to update schemas, handle parameter changes, and incorporate additional business logic efficiently. From your description, here’s how I would approach it: 1. Review the current codebase, API documentation, and Postman collection to fully understand the existing structure. 2. Implement the schema adjustments, parameter renaming, and new logic checks with minimal impact on existing functionality. 3. Update the OpenAPI spec to reflect changes, ensuring clear documentation and Swagger UI rendering. 4. Develop comprehensive unit tests for all new logic, keeping performance intact via prior load testing insights. I always build with clarity and maintainability in mind, making sure the codebase remains robust and easy to extend. If you’re open to it, I’d like to ask one quick question so I can tailor the solution more precisely: Are there specific endpoints or business rules that need prioritization for the initial updates? Looking forward to discussing more.
$10 USD in 5 Tagen
3,0
3,0

I understand your project focuses on enhancing and tweaking REST endpoints to improve performance and usability. I will conduct a thorough assessment of your existing endpoints, identifying bottlenecks and areas for optimization. Specifically, I will implement pagination, caching strategies, and error handling improvements to ensure a seamless user experience. Additionally, I will enhance security measures by adding authentication and authorization layers, using tools like OAuth and JWT. My approach will also involve updating documentation to reflect the changes made, ensuring that your team can easily integrate and maintain the endpoints. With over 5 years of experience in developing RESTful APIs and a strong background in using frameworks such as Node.js and Express, I am equipped to deliver efficient and scalable solutions. I have successfully completed similar projects, resulting in improved response times and user satisfaction for my clients. I am proficient in using Postman for testing and validation, ensuring that each endpoint functions as expected before deployment. I am committed to delivering high-quality work on time and am excited about the opportunity to contribute to your project. Best regards, Bilal.
$20 USD in 5 Tagen
2,8
2,8

Being a seasoned software developer from India with a knack for problem-solving, I've dealt extensively with RESTful services and frameworks like Express and Django REST. Consequently, the tasks you've outlined align closely with my strengths and experience. Not only am I adept at diving deep into existing codebases, but I also place considerable emphasis on maintaining backward-compatibility- something you mentioned is vital to your project. My skills aren't just limited to development; I have a solid foundation in automated testing as well. Rest assured that when modifying your REST API, I will not only ensure adherence to the updated JSON schema but also focus on increasing the overall functionality while steadfastly complying with your acceptance criteria. To top it all off, I've led teams and created extensive automation suites from scratch for both web and mobile applications. This experience will come in handy when it comes to ensuring clean, well-tested deliverables with minimum hiccups or regression issues. Let's hop on this opportunity where my skills and attitude can make an immediate impact for your enhanced API!
$20 USD in 7 Tagen
3,6
3,6

Hi, hope you are doing well. I've read your proposal very carefully, and I am confident that I can help you refine your existing REST API. I understand that you need a skilled developer to jump straight into the current codebase and modify several endpoints while ensuring backward compatibility. I have hands-on experience in working with RESTful services and frameworks like Express and Django REST, which equips me to handle the adjustments you require efficiently. My approach will include: - Adjusting the response data format to align with the latest JSON schema. - Renaming specific request parameters and implementing the necessary changes to make certain fields optional while adding new required parameters. - Enhancing the functionality of the endpoints by incorporating essential business logic checks. I can start immediately and complete the work within a short timeline. I look forward to your reply and the opportunity to collaborate on this project.
$20 USD in 7 Tagen
0,6
0,6

Hi there, I can jump straight into your existing REST API and update the endpoints while ensuring full backward-compatibility. I’ll adjust response formats to match your latest JSON schema, implement the required parameter changes, and incorporate the new business logic currently handled on the client side. All modifications will be thoroughly tested with unit tests and verified against your Postman collection, Swagger UI, and k6 load scripts to prevent regressions. I’ll also update the OpenAPI documentation so everything is fully aligned. With extensive experience in building and refining RESTful services (Express, FastAPI, Django REST, etc.), I deliver clean, well-tested, and production-ready code. Ready to start immediately and take full ownership of this task.
$12 USD in 2 Tagen
0,6
0,6

Hi there, I can jump right into your REST API project and give it the tweaks it needs without messing up any backward compatibility. I've got solid experience with frameworks like Express and FastAPI, so I know how to handle JSON schemas and keep everything running smoothly. I’ll make sure the response data format is spot on with your latest JSON schema and adjust those request parameters as needed. Plus, I’ll add in that essential business logic checks, so everything works like a charm on the client side. I’m all about clean code and solid testing, so you can count on me to hit all your acceptance criteria. Let’s make those endpoints shine! Best regards, Uros S
$20 USD in 7 Tagen
0,0
0,0

Hey Herbert B., I just finished reading the job description and I see you are looking for someone experienced in Git, FastAPI, Backend Development, API Development, JSON, Software Development, Software Testing and RESTful. This is something I can do. Please review my profile to confirm that I have great experience working with these tech stacks. While I have few questions: 1. These are all the requirements? If not, Please share more detailed requirements. 2. Do you currently have anything done for the job or it has to be done from scratch? 3. What is the timeline to get this done? Why Choose Me? 1. I have done more than 250 major projects. 2. I have not received a single bad feedback since the last 5-6 years. 3. You will find 5 star feedback on the last 100+ major projects which shows my clients are happy with my work. Timings: 9am - 9pm Eastern Time (I work as a full time freelancer) I will share with you my recent work in the private chat due to privacy concerns! Please start the chat to discuss it further. Regards, Syed.
$10 USD in 2 Tagen
0,0
0,0

Hi there, I understand that your main goal is to enhance and tweak REST endpoints to improve functionality and user experience. In my previous role, I successfully optimized REST APIs for a tech startup, resulting in a 25% decrease in response times and a 15% increase in user engagement. Additionally, I implemented robust authentication measures that enhanced security and user trust. To address your needs, I will perform a thorough analysis of the current REST endpoints and identify areas for enhancement. I will then implement optimizations and tweaks to improve performance, ensuring seamless user interactions and satisfaction. I would be happy to discuss your needs and get started right away. Best regards, Artem
$20 USD in 7 Tagen
0,0
0,0

I’d be happy to help refine your existing REST API. I have strong experience working on mature codebases where backward-compatibility and clean, well-tested updates are essential. I can quickly jump into your current endpoints, align responses to the new JSON schema, update/rename request parameters, and move client-side checks into the server layer with clean, maintainable logic. I routinely work with OpenAPI 3.0, Postman collections, and Git-based workflows. You’ll get: Fully updated endpoints matching the new schema Clear parameter documentation reflected in the OpenAPI spec & Swagger UI New business logic covered with strong unit tests Zero regressions, validated through performance checks I’ve built and maintained RESTful services using frameworks like FastAPI, Django REST, and Express, and I’m comfortable delivering high-quality, production-ready code.
$30 USD in 6 Tagen
0,0
0,0

Hi, We went through your project description and it seems like our team is a great fit for this job. We are an expert team which have many years of experience on Software Testing, Software Development, RESTful, Git, JSON, Backend Development, API Development, FastAPI Please come over chat and discuss your requirement in a detailed way. Thank You
$10 USD in 7 Tagen
0,0
0,0

Hello there, I understand that you are looking for a skilled developer to enhance and tweak existing REST endpoints without compromising backward-compatibility. My proposed solution involves diving into the current codebase to adjust response data formats, modify request parameters, and enhance endpoint functionality with additional business logic checks. Key Deliverables: - Consistent response data format with the latest JSON schema - Modified request parameters documented in the OpenAPI file - Enhanced functionality with new business logic checks - Unit tests for new logic coverage and performance optimization I bring expertise in backend development, API development, and working with frameworks like FastAPI and RESTful services to ensure quality and reliability. I'll share my portfolio with you in the DM. Kindly, ping me there. I'd love to connect for a quick chat to discuss your project in more detail. Best regards, Bilal
$20 USD in 7 Tagen
0,0
0,0

Hi, I have read your project description and understood it. I can refine your existing REST API by adjusting response data formats to match your latest JSON schema, modifying request parameters as required, and implementing the small but important business logic checks directly in the endpoints. I can ensure all changes pass existing unit tests, update the OpenAPI documentation, and maintain backward compatibility without affecting performance. I can also add the necessary unit tests to cover the new logic and make sure everything integrates smoothly with your staging environment. And I can deliver these updates efficiently while keeping your API stable and consistent. Regards, M Sohaib
$20 USD in 2 Tagen
0,0
0,0

❤️ Hello Herbert, I’ve worked on REST APIs before and would be happy to help enhance your existing endpoints. I believe my skills and experience will make your project perfectly. I can update your API to match the latest JSON schema, adjust request parameters, and implement the necessary business logic while keeping everything backward-compatible. I’ll also write unit tests to cover the new functionality and ensure the endpoints remain fully reliable. I’d love to chat more about your API and workflow so we can implement these enhancements smoothly. Looking forward to hearing from you. Best regards, Marco
$20 USD in 7 Tagen
0,0
0,0

Hi Herbert, I understand that you are looking to enhance and modify existing REST endpoints to align with the latest JSON schema, update request parameters, and improve overall functionality without disrupting backward-compatibility. My technical strategy involves diving into the current codebase, implementing the necessary adjustments to the response data format and request parameters, and enhancing endpoint functionality with additional business logic checks. I prioritize clean coding practices and thorough testing to ensure seamless integration. You will receive a Postman collection and environment, API documentation in OpenAPI 3.0 format, staging server access, and a Git repository for pull requests. I'll send over my portfolio via direct message. Feel free to reach out there. My background in RESTful services with frameworks like Express ensures reliable results, professional standards, and seamless execution. I'm available to dive deeper into your requirements and address any concerns. Best regards, Taneem
$20 USD in 7 Tagen
0,0
0,0

Hello! I can handle this project with accuracy and fast delivery. I have experience working with AI tools, data tasks, and online services. I am reliable, available every day, and I always deliver on time. If you choose me, your project will be completed quickly and with high quality.
$20 USD in 7 Tagen
0,0
0,0

As a seasoned backend developer with a strong focus on API development and software engineering, I have the perfect skill set to handle your REST endpoint enhancement project. Having worked extensively with popular frameworks like Express, Django REST, and FastAPI, I am not only familiar with but also proficient at delivering high-quality code that is consistent with the latest schema - precisely what your project needs. Throughout my career, I have consistently demonstrated my expertise in writing clean, well-tested code that not only enhances functionality but also maintains backward-compatibility. With clear understanding of the tasks you've outlined, I can effectively change request parameters as needed satisfactorily while ensuring that any modification to your endpoints does not break backward-compatibility. Moreover, my commitment to reliability and performance means that enhancing overall functionality is something I take very seriously. In addition to meeting your acceptance criteria and documenting any modifications impeccably well in the OpenAPI file for seamless usage in Swagger UI, I'll be happy to add at least three new unit tests for each endpoint as required. At the end of our work together, you’ll find an API that delivers consistent data formats as per your JSON schema, incorporates important business logic checks, and performs optimally even under load. Let’s team up for a successful enhancement journey!
$20 USD in 7 Tagen
0,0
0,0

Hi, I can update your existing REST API to match the new JSON schema, adjust request parameters, and implement the required business-logic enhancements without breaking backward compatibility. All endpoint changes will be fully documented in OpenAPI, covered with new unit tests, and validated against your k6 performance scripts and existing test suite. With strong experience in Express/FastAPI/Django REST, I can work directly in your current codebase and deliver clean, stable, production-ready updates. lets connect for quality work - will enjoy our friendly support chat for past work
$23 USD in 7 Tagen
0,0
0,0

Hello, I can refine your existing REST API and update the required endpoints while keeping full backward compatibility. I’ll align all responses with the updated JSON schema, adjust the request parameters as needed, and move the relevant business logic from the client side into the API layer. All changes will be documented in your OpenAPI spec, visible in Swagger UI, covered with new unit tests, and validated against your existing k6 performance checks. I have strong experience with Express, FastAPI, and Django REST, and I’m comfortable working directly within an existing codebase. I’m ready to start as soon as you provide access to the repo and staging environment.
$10 USD in 1 Tag
0,0
0,0

Hi, I’m excited about the opportunity to assist in refining your REST API and ensuring smooth modifications while maintaining backward compatibility. With solid experience in developing and maintaining RESTful APIs using frameworks like Express and FastAPI, I’m confident I can implement the required changes efficiently. I will jump directly into your existing codebase and: - Adjust response data to match the latest JSON schema, ensuring consistency across endpoints. - Modify request parameters: rename certain fields, make some optional, and add a new required parameter. - Enhance business logic by moving checks currently in the client layer to the appropriate server-side endpoints. My process will include: - Verifying all modified endpoints return the new schema correctly and pass your unit tests. - Updating the OpenAPI documentation to reflect the changes and ensure it’s visible in Swagger UI. - Writing unit tests for the new logic to ensure robustness and prevent regressions. - Ensuring no performance issues with k6 load testing. Best,
$20 USD in 7 Tagen
0,0
0,0

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