$13,000.00 Fixed
We are seeking an experienced REST API Developer to build secure, high-performance, and scalable backend APIs that serve as the backbone of our web and mobile applications.
You’ll work closely with the frontend (React/Vue/Android) and DevOps teams to create structured, well-documented endpoints that ensure seamless data exchange between systems.
The ideal candidate has a strong understanding of API lifecycle management, authentication protocols, caching, and versioning strategies. You’ll also be responsible for implementing robust error handling, rate limiting, and monitoring.
This is an 8–10 week project, with the goal of delivering production-ready APIs for an e-commerce and user management system. The backend will be developed using Node.js/Express or Laravel, depending on the stack preference.
If you’re passionate about clean architecture, documentation-first API development, and building secure systems that scale — this is the project for you.
Key Responsibilities
Design and develop RESTful APIs following best practices and naming conventions.
Implement CRUD endpoints for core resources (users, orders, products, payments).
Secure APIs with JWT authentication and role-based access control.
Manage versioning (v1, v2) for backward compatibility.
Integrate third-party APIs (payment gateways, analytics, shipping, etc.).
Optimize query and data transfer performance.
Use Swagger or Postman for API documentation and testing.
Implement caching (Redis / Memcached) for faster responses.
Create monitoring and logging systems using Sentry or Winston.
Write automated unit and integration tests.
Collaborate with frontend teams for API integration and testing.
Handle CORS, rate limiting, and throttling for performance and security.
Manage CI/CD pipelines for automated testing and deployment.
Participate in code reviews and contribute to architecture improvements.
Maintain consistent and secure data flows between microservices.
Required Skills
3+ years of experience in backend or API development.
Strong proficiency with Node.js / Express or PHP / Laravel.
Solid understanding of REST principles and API lifecycle.
Experience with JWT, OAuth2, and API key authentication.
Proficiency with PostgreSQL / MySQL / MongoDB.
Familiarity with Redis / Memcached caching.
Strong knowledge of Swagger / OpenAPI documentation.
Familiar with Docker and containerized environments.
Testing with Jest / Mocha / PHPUnit.
Version control using Git / GitHub.
Deployment to AWS / DigitalOcean / Render.
Knowledge of CORS, HTTPS, SSL, and encryption.
Ability to debug, profile, and optimize backend performance.
Excellent communication and documentation skills.
Tools & Technologies
Languages: Node.js / PHP 8.2+
Frameworks: Express / Laravel 11
Database: MySQL / PostgreSQL / MongoDB
Authentication: JWT / OAuth 2.0
Cache: Redis / Memcached
Testing: Jest / PHPUnit
Documentation: Swagger / Postman
Deployment: Docker / AWS / Render / Hostinger
Monitoring: Sentry / LogRocket / New Relic
Version Control: Git / GitHub
Deliverables
Fully functional REST API endpoints with CRUD operations.
Authentication and authorization modules.
Optimized database models and queries.
Swagger / Postman documentation with examples.
CI/CD setup for deployment automation.
API error handling and monitoring setup.
Two revision rounds post-deployment.
15 days post-launch bug support and optimization.
Budget Options
Hourly Rate: $40 – $75/hour
Project-Based: $5,000 – $11,000 (depending on complexity)
Retainer (Optional): $4,000 – $6,000/month for ongoing maintenance and version updates.
Timeline
Week 1: Requirement analysis, architecture setup.
Weeks 2–6: Core API development and integration.
Week 7: Testing and documentation.
Week 8: Deployment and optimization.
Week 9–10: Revisions and final delivery.
Success Metrics
Average API response time under 250ms.
99.9% uptime under production load.
95%+ test coverage.
Zero major vulnerabilities after security audit.
Stable integration across all connected systems.
Positive client feedback from integration teams.
Ideal Candidate Profile
You’re a backend developer who thrives on building systems that “just work” — reliable, fast, and secure. You write reusable code, document everything, and think ahead about scaling, versioning, and security before problems arise.
How to Apply
Send your proposal including:
2–3 API projects (live URLs or GitHub repos).
Details of your stack and authentication approach.
Hourly rate or project-based preference.
Shortlisted candidates will be contacted within 48 hours for a quick technical call.
- Proposal: 0
- Less than a month
