Experience
System Architecture and Platform Design at Spring Fest, IIT Kharagpur
July 2024 – April 2025 • Kharagpur, India
- Scaled backend for 100M+ API requests by deploying with Nginx and Redis caching across 4 AWS EC2 t3.large instances.
- Handled 80L+ transactions by integrating the PhonePe API, with authentication via JWT and OAuth2 and rate-limited endpoints.
- Delivered 99.8% OTP/email delivery using MSG91, a mailer, async retry queues, and CloudWatch monitoring.
- Shipped a React Native app on the Play Store (1K+ downloads) with backend integration for event access and admin tools.
Software Developer Intern at ParallelDots
December 2024 – January 2025 • Remote
- Improved Android render speed by 25% and cut cold start by ~3.2s via ViewModel, lazy loading, and UI refactors.
- Reduced upload failures by ~20% using S3 for resumable uploads with Cognito-secured access and retry logic.
- Cut invalid scans by ~18% using a SQLite-backed local queue with WorkManager sync triggered by network connectivity.
- Lowered API load by ~10% by caching task history, enabling instant access and reducing backend calls after reconnect.
Education
Indian Institute of Technology, Kharagpur
2022 - Present
Delhi Public School, Kalyanpur
2020 - 2022
Core CS & Systems:
- Programming and Data Structures
- Discrete Structures
- Algorithms I & II
- Computer Organization and Architecture
- High Performance Computer Architecture
- Compilers
- Formal Language and Automata Theory
- Switching Circuits and Logic Design
- Software Engineering
- Operating Systems
- Computer Networks
- Database Management Systems
- Foundations of Cryptography
AI, ML & Data:
- Data Analytics
- Machine Learning
- Statistical Learning Theory
- Information Retrieval
- AI and Ethics
- Application of Machine Learning in Biological Systems
- Ubiquitous Computing
Mathematics & Science:
- Advanced Calculus
- Linear Algebra, Numerical and Complex Analysis
- Probability & Statistics
- Signals and Systems
- Basic Electronics
- Physics of Waves
- Chemistry
- Basic Engineering Mechanics
- Electrical Technology
- Environmental Science
- Science of Living Systems
Business, Humanities & Design:
- English for Communication
- German
- Introduction to Innovation and Entrepreneurship
- Entrepreneurship Essentials
- Small Business Development
- Technopreneurial Marketing
- Positive Psychology
- Engineering Drawing and Computer Graphics
Skills
Languages:
C/C++, Rust, Go, Elixir, Python, TypeScript, JavaScript, Bash, Awk, Verilog, SQL
Libraries and Frameworks:
React, Next.js, React Native, Node.js, Express, Pandas, NumPy, GraphQL, Prisma, Django, Flask
Tools and Platforms:
Docker, Kubernetes, Redis, MongoDB, Postgres, AWS, Azure, Git, Databricks, Linux Kernel, Raspberry Pi
Competitive Programming
- Codeforces - sumitkumar-17
- LeetCode - SumitKumar-17
- CSES - sumitkumar-17
- AtCoder - SumitKumar17
- CodeChef - sumitkumar173
Awards and Honors
- Secured AIR 2038 in JEE Advanced, AIR 1870 in JEE Mains (1.2M candidates), and AIR 83 in WBJEE, 2022.
- Contributed to the NixOS open-source project, writing patches, refining Nix expressions, and improving system builds.
- Served as Unit Leader for NSS Unit-4, coordinating activities and receiving the Best Volunteer Award.