$11,000.00 Fixed
We’re looking for a skilled REST API Developer to architect and build secure, scalable, and highly optimized backend APIs for our web and mobile ecosystem.
This role involves creating production-grade endpoints for authentication, payments, user management, product data, analytics, and third-party integrations. You will work closely with frontend (React/Vue/Android/iOS) teams to ensure perfect coordination between UI and backend.
Our backend stack features Node.js/Express or Laravel, depending on your expertise, along with MySQL/MongoDB, Redis, JWT authentication, and CI/CD.
This is an 8–10 week project, focused on building core API infrastructure for an e-commerce and business dashboard system. Reliability, documentation, and security are top priorities.
If you’re passionate about building APIs that are clean, fast, secure, and easily extendable, this role will fit you perfectly.
Key Responsibilities
Develop RESTful APIs following best practices and clean architecture.
Build CRUD endpoints for users, orders, payments, and product data.
Implement secure authentication using JWT / OAuth 2.0.
Optimize API response times using caching (Redis / Memcached).
Integrate third-party APIs (payment gateways, shipping, analytics).
Ensure API versioning and backward compatibility.
Write automated unit and integration tests.
Document all endpoints using Swagger or Postman.
Implement input validation and sanitization to avoid security flaws.
Handle rate limiting, throttling, and traffic spikes.
Work with DevOps to set up automated deployments.
Collaborate with frontend teams for seamless integration.
Implement structured logging and error monitoring.
Ensure HTTPS, SSL, and secure headers are properly configured.
Provide post-launch API maintenance and debugging support.
Required Skills
3+ years of backend/API development experience.
Expertise in Node.js (Express/NestJS) or Laravel/PHP.
Strong knowledge of REST architecture & API design patterns.
Experience with MySQL, PostgreSQL, or MongoDB.
JWT/OAuth authentication experience.
Hands-on with Redis or in-memory caching systems.
Proficient in Swagger/Postman for documentation.
Familiar with Docker and containerized environments.
CI/CD pipelines with GitHub Actions or GitLab CI.
Knowledge of security standards (XSS, CSRF, SQL injection prevention).
Understanding of microservices and scalable architectures.
Experience integrating external APIs.
Familiarity with error tracking tools (Sentry, LogRocket).
Strong debugging and performance profiling skills.
Excellent communication and documentation ability.
Tools & Technologies
Runtime: Node.js 20+ / PHP 8.2+
Frameworks: Express.js, NestJS, Laravel 11
Databases: MySQL / PostgreSQL / MongoDB
Authentication: JWT, OAuth 2.0
Cache: Redis / Memcached
Testing: Jest, Mocha, PHPUnit
Documentation: Swagger (OpenAPI), Postman
Deployment: Docker, AWS, Render, DigitalOcean
Monitoring: Sentry, New Relic
Version Control: Git / GitHub
Deliverables
Complete REST API with all required endpoints.
Secure authentication and authorization modules.
Optimized database schema with indexes.
Fully documented API using Swagger/Postman.
CI/CD pipeline setup for backend deployment.
Error handling, monitoring, and logging systems.
Two revision rounds after initial submission.
15–30 days of post-launch maintenance.
Budget Options
Hourly: $40 – $75/hour
Project-Based: $5,000 – $11,000 (based on complexity)
Monthly Retainer: $4,000 – $6,000 for continuous updates
Timeline
Week 1: Architecture planning & environment setup
Weeks 2–6: API development & database integration
Week 7: Testing, documentation, and optimization
Week 8–10: Deployment & revisions
Success Metrics
API response time under 250ms
99.9% uptime and stability
95%+ test coverage for core endpoints
Zero critical vulnerabilities during penetration testing
Smooth frontend integration without breaking changes
Ideal Candidate Profile
You are a backend-focused engineer who enjoys solving data, scaling, and security challenges. You build APIs that are clean, consistent, well-documented, and future-proof. You care about performance, clarity, and robust error handling.
How to Apply
Send:
2–3 API projects (live URLs, GitHub repos, or Postman collections).
Your experience with authentication, caching, and API security.
Preferred working model (hourly/fixed).
Shortlisted developers will be contacted within 48 hours for a quick technical discussion.
- Proposal: 0
- Less than a month
