Node.js Backend Development and API Design
Build and deploy scalable REST APIs with Express.js and database integration.
About This Assessment
Node.js remains the #1 web framework globally with 43% developer adoption and consistent high demand across startups and enterprises. This assessment validates hands-on ability to build production-ready backend services, a critical skill for full-stack roles where companies receive hundreds of applications and need to verify real coding ability beyond resume claims.
What Candidates Will Do
Build a REST API with Express.js that handles CRUD operations for a resource (e.g., user management, product catalog)
Implement authentication middleware using JWT tokens and secure endpoints with role-based access control
Connect to PostgreSQL or MongoDB, write queries/models, implement data validation and error handling
Add logging, implement rate limiting, and write basic unit tests for API endpoints
Automated Grading
Verify API endpoints return correct status codes and JSON responses, authentication blocks unauthorized access, database records are created/updated/deleted correctly, error handling prevents server crashes, and code follows Node.js best practices (async/await, middleware patterns, environment variables)
Environment
Ubuntu 22.04 VM with Node.js 20+, npm, PostgreSQL 15 or MongoDB 7, Redis (optional for sessions), Git, and common testing frameworks (Jest/Mocha)
Earn a Verified Certificate
Pass this assessment and receive an AbilityScreen Certified Professional credential — verifiable proof of your hands-on skills that you can share with employers.
- Performance-verified — proves real skills demonstrated in a live environment, not a multiple-choice test
- Employer-verifiable — each certificate has a unique ID that anyone can verify online
- Career-ready — share directly to LinkedIn or include in your resume
Sample certificate for demonstration purposes. View full details
Ready to prove your skills?
Purchase this assessment and get started today.
$99.00