Neetu Singh
|Full Stack EngineerFull-Stack Engineer | Skilled in Building Scalable, High-Performance Software Systems with Node.js, Express.js & Next.js, RESTful APIs, and Database Optimization |Learning & Gaining Experience in Production CI/CD • Dockerized AWS • SOLID Architecture | GFG Institute Rank 3 🏅 | Proficient in Testing, Monitoring, and DevOps Practices | Passionate About Designing Reliable, Efficient, and User-Centric Systems
About
I am Neetu Singh, Full Stack Engineer with a strong backend focus and hands-on experience in designing, developing, and maintaining scalable, production-grade web applications using Node.js, Express.js, Next.js, and modern JavaScript ecosystems. I began my professional journey as a Full Stack Intern, contributing to live production systems, backend services, RESTful API development, database schema design, and API integrations. I optimized backend workflows and improved API response times by 30%, increased service reliability by 25%, and reduced query execution times by 40% through efficient data modeling, caching strategies, and structured error management. Through consistent delivery and technical ownership, I transitioned into a full-time engineering role, handling the complete backend-heavy software development lifecycle, including system design, API architecture, implementation, performance optimization, deployment, monitoring, and maintenance. I specialize in building low-latency, high-availability backend services, implementing secure authentication/authorization (JWT, RBAC), and designing modular, maintainable codebases following clean architecture and SOLID principles. I have designed RESTful APIs consumed by 5+ client applications, refactored legacy modules to reduce production incidents by 35%, and implemented centralized logging and monitoring for faster debugging. I optimize databases (MongoDB, SQL) improving query efficiency by 30%, and collaborate with frontend teams using React and Next.js for seamless API integration and server-side rendering. I follow CI/CD-friendly Git workflows with pull requests and code reviews, contributing to a ~25% reduction in post-release bugs. I am committed to backend scalability, system reliability, and delivering high-performance solutions that drive measurable business impact. I continuously explore emerging technologies to improve system design and developer workflows, with the goal of building innovative, user-centric solutions that positively impact businesses and communities.
Experience
Full Stack Engineer
One Health Assist • Mumbai, India
Present- Architected and deployed RESTful APIs serving healthcare platform with 1000+ daily active users, implementing JWT-based authentication and role-based access control (RBAC) for secure patient and provider management.
- Optimized MongoDB database queries and implemented Redis caching strategies, reducing API response times by 30% and improving overall system throughput for appointment booking and medical records retrieval.
- Designed and developed microservices architecture using Node.js and Express.js, following clean architecture principles and SOLID design patterns for enhanced code maintainability across health modules.
- Built server-side rendered applications with Next.js for patient portals and provider dashboards, reducing initial page load times by 45% and improving SEO performance metrics.
- Implemented comprehensive error handling, centralized logging mechanisms with Winston, and monitoring solutions that reduced production incidents by 35% and improved debugging efficiency.
- Refactored legacy backend modules for appointment scheduling and patient management, reducing technical debt and achieving 40% improvement in query execution times through optimized data modeling.
- Integrated third-party APIs for payment processing (Razorpay/Stripe), SMS notifications, and video consultation services, implementing proper error handling and retry mechanisms.
- Collaborated with frontend teams to integrate APIs seamlessly, establishing standardized API contracts and Swagger documentation that reduced integration time by 25%.
- Established CI/CD pipelines with Git-based workflows using GitHub Actions, conducting thorough code reviews that contributed to a 25% reduction in post-release bugs.
- Implemented automated unit and integration testing with Jest and Supertest achieving 85%+ code coverage, ensuring system reliability and reducing regression issues.
- Managed database schema design and migrations for MongoDB collections (users, appointments, medical records, prescriptions), ensuring data integrity and scalability for growing user base.
- Developed secure file upload functionality for medical documents and reports using AWS S3 with presigned URLs and proper access controls.
- Built real-time notification system using Socket.io for appointment reminders and instant messaging between patients and healthcare providers.
- Implemented rate limiting and API throttling to prevent abuse and ensure fair resource allocation across different user tiers.
Full Stack Developer Intern
Codolog • Remote (Mumbai, India)
Mar 2024 – Aug 2024- Implemented role-based access control (RBAC) to manage user permissions and ensure secure access to protected routes and resources.
- Designed and developed real-time features using WebSockets/Socket.io for chat functionality, enabling instant message delivery and status updates.
- Configured environment-based deployments and managed CI/CD pipelines to automate build, testing, and deployment processes.
- Implemented caching strategies using Redis to improve API response times and reduce database load.
- Developed reusable utility modules and service layers to maintain clean architecture and separation of concerns.
- Monitored application performance using logging and monitoring tools, identifying bottlenecks and resolving production issues proactively.
- Created comprehensive API documentation using tools like Swagger/Postman to improve developer onboarding and integration efficiency.
- Handled file uploads and storage integrations (e.g., AWS S3/Cloud storage) with proper validation and security controls.
- Implemented pagination, filtering, and sorting mechanisms for scalable data retrieval across high-volume endpoints.
- Conducted database migration scripts and version control for schema updates without affecting live production data.
- Ensured secure password management using hashing algorithms (bcrypt) and implemented JWT-based authentication flows.
- Wrote integration tests and end-to-end test cases to validate API reliability and system stability before production releases.
- Collaborated with frontend teams to define API contracts and ensure seamless integration between React frontend and Node.js backend.
- Performed security audits and code refactoring to enhance maintainability, scalability, and long-term system stability.
Frontend Intern
Techno Hack • Remote (Nashik, Maharashtra, India)
Jun 2024 – Oct 2024- Implemented code-splitting and lazy loading strategies using React.lazy and dynamic imports, reducing initial bundle size and improving page load performance.
- Optimized component re-renders using memoization techniques (React.memo, useMemo, useCallback), improving overall UI responsiveness.
- Designed scalable folder structures and component architecture to support future feature expansion with minimal refactoring.
- Integrated authentication flows with JWT/session-based systems, handling protected routes and role-based UI rendering.
- Built custom reusable hooks to abstract business logic, improving code reusability and reducing duplication across modules.
- Configured form validation using libraries like React Hook Form/Yup, improving form reliability and reducing invalid submissions.
- Wrote unit and component tests using Jest and React Testing Library to ensure UI stability and prevent regressions.
- Improved SEO and performance by implementing proper meta tags, structured data, and Lighthouse optimizations.
- Handled complex UI animations and transitions using Framer Motion/CSS transitions to enhance user interaction experience.
- Integrated WebSocket-based real-time updates for dynamic UI synchronization without manual refresh.
- Collaborated in code reviews to enforce best practices in component design, performance optimization, and maintainable styling patterns.
- Managed global error boundaries and fallback UI mechanisms to gracefully handle runtime exceptions.
- Reduced technical debt by refactoring legacy components into modular, reusable, and well-documented units.
Technical Skills
Programming Languages
Libraries & Frameworks
Tools & Platforms
Databases
Cloud Platforms
Projects
Book Finder
- Implemented reading progress tracking and user rating features in a MERN application with mock data for 300+ books.
- Improved performance and UX by 30% using Redux Toolkit, lazy loading, and smooth UI transitions.
- Enhanced search functionality with filters by genre, author, and rating, improving user engagement and retention.
FormFixer
- Developed a full-stack tool for automated HTML form validation and JSON schema generation, saving 15 hours per week.
- Implemented Git-based collaboration for 2+ developers, reducing merge conflicts by 15% and speeding up delivery by 10%.
- Implemented logging and analytics for form usage to track performance and optimize workflow.
Education
🎓 Bachelor In Technology
🏫 Prepleaf by Masai
⏰ Mar 2023 – Jul 2025
🎓 Diploma in Computer Science
🏫 Board of Technical Education
⏰ Completed
GitHub Activity
Contribution Streak
Contributions
Streak
Jun 21, 2025