Headline

SDE Intern @ VoyageX AI | Backend & MERN Developer | 300+ LeetCode Problems | 5 star HackerRank | Hackathon Winner x2

About

I am a software developer with a strong foundation in building dynamic web applications. With a focus on the MERN stack, I specialize in creating scalable systems that prioritize user experience and performance. What I bring to the table: ● Frontend Expertise: Crafting responsive interfaces using React.js and modern CSS frameworks. ● Backend Architecture: Designing robust server-side logic with Node.js, Express, and MongoDB. ● Problem Solving: A deep interest in System Design and Backend Architecture to ensure software efficiency. ● Continuous Learning: Actively exploring Docker and Redis to improve deployment and performance. I am driven by the goal of building software that is not only functional but also impactful for the end-user.

Location

New Delhi

AI stack

cursor

github copilot

hugging face

ollama

Work experience

SDE intern at VoyageX AI, Mar 2026 - Present · 3 mos, Gurugram, Haryana, India, Engineered scalable backend services using Node.js, TypeScript, and Express, designing modular REST APIs for efficient data flow and system reliability. Implemented secure authentication and database operations using Firebase, ensuring robust user management and data integrity. Optimized API performance and database queries, improving overall system productivity by ~10% and reducing response latency. Contributed to Flutter-based cross-platform development, enhancing UI responsiveness and improving user experience across devices. Designed and implemented an offline-first architecture using PocketBase, enabling seamless data synchronization and functionality in low-connectivity environments. Collaborated closely with cross-functional teams to analyze client requirements, scale features, and deliver production-ready solutions. Enhanced application scalability by structuring backend services to handle increasing user load and evolving client demands.

Technical Lead at The Ace, Oct 2025 - Present · 8 mos, Uttar Pradesh, India, • Driving tech innovation through impactful events and conferences. • Connecting tech enthusiasts, industry leaders, and young professionals. • Supporting a community where ideas grow and collaborations begin.

Web Development Intern at UnlistedShareWala, Feb 2026 - Mar 2026 · 2 mos, New Delhi, Delhi, India, Contributed to migration of legacy backend from PHP (Laravel) to Node.js, Express, and MongoDB, improving scalability and modernizing the system architecture. Developed and maintained backend services for both legacy (PHP) and modern (Node.js) systems, ensuring smooth transition and compatibility . Built and enhanced platform features including share screener modules, data management, and additional pages for improved user functionality. Increased platform data by ~40% by adding and managing unlisted share records efficiently. Improved routing logic and UI components in the PHP-based system, enhancing usability and navigation. Designed and extended REST APIs, increasing backend coverage and supporting new feature development. Collaborated with cross-functional teams to deliver scalable and production-ready solutions aligned with business requirements.

Web Developer at CodSoft, May 2024 - May 2024 · 1 mo

Education

Bachelor of Technology - BTech Computer science Engineering, Computer Software Engineering, Guru Gobind Singh Indraprastha University

Panchsheel Public School - India

Public links

github: https://github.com/sinhaSandeep2006