From idea to launch.
At Ecowell, I worked across frontend, backend, database, and mobile dependencies in a three-person engineering team.
Software Development Engineer · Chennai, India
Engineering ideas into real-world systems.
I’m Abhay Sharma. I build full-stack products, developer tools, and resilient systems that are useful at scale.
Currently: B.S. Data Science and Applications · IIT Madras
Built to solve / 001
From product interfaces to infrastructure, I focus on measurable outcomes.
10K+customers supported at Ecowell
70+multi-stage workflows automated
8operational locations connected
Why work with me
I build, own, and ship.
My work combines product judgment with hands-on engineering. These are the strengths I bring to a team.
Built for actual usage.
I helped launch software for 10,000+ customers and 1,000+ daily tickets, and built CF Insights for 20,000+ users.
Beyond the UI.
My projects span offline-first WebSocket systems, rigorous C++ data structures, APIs, analytics, and cross-platform apps.
GitHub / Public repos—Public repositories on GitHub
GitHub / Stars—Stars across my public repositories
This site / Visitors—Counter starts at 100 · Sep 2026
GitHub figures update from my public profile. The visitor counter is seeded at 100, as requested.
01 / Experience
Built for the real world.
Engineering across web, mobile, data, and operations within a small team.
Software Development Engineer Intern
Ecowell India
Built and launched a customized CRM within a three-person engineering team, supporting 10,000+ customers across 8 locations and coordinating operations across 18 teams.
- Developed web and mobile applications with React, React Native, JavaScript, and TypeScript, backed by Node.js, Express.js, and PostgreSQL.
- Integrated 48 API endpoints supporting 1,000+ daily tickets and 10,000+ daily transactions across the platform.
- Designed GPS attendance and real-time location tracking for 1,000+ employees using mapping APIs, with role-based visibility across 8 user roles.
- Automated 70+ workflows across sales, service, attendance, payments, and logistics while coordinating cross-platform dependencies and multi-step API interactions.
02 / Selected work
Projects with purpose.
Products and systems built end to end, with performance and reliability in mind.
01 / Analytics
CF Insights
Codeforces analytics for 20,000+ users and approximately 200 daily active users.
Analyzes ratings, contests, submissions, solved problems, and topic-wise performance to generate personalized insights and improvement plans. Supported peak usage above 100 API calls per second.
02 / Offline-first
Relief Net
Local-network communication without an internet connection or cloud infrastructure.
A PWA with 7 REST endpoints and 1 WebSocket route for room messaging, member presence, moderation, and CSV exports. Includes a persistent offline queue, 2-second reconnection, service-worker caching, and configurable 30-day retention.
Bounded 200-message history, per-client rate limiting, origin validation, role-protected moderation, and audit logging across 3 SQLite entities; 8 automated tests passed.
03 / Systems
LRU Cache — C++20
Reusable cache with average O(1) lookup, insertion, update, and eviction.
Includes an interactive CLI and thread-safe wrapper. Validated with 100,000 randomized reference-model operations, edge cases, exception checks, and an 8-thread stress test covering 40,000 reads.
Benchmarked on 200,000-operation workloads: up to 57.6× the throughput of a linear vector baseline, with 4 GCC/Clang CI configurations and sanitizer checks.
03 / Notes from the build
Writing & ideas.
Field notes on building products, exploring systems, and learning in public. Click a story to read it.
Articles and reading times load with the blog.
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04 / Capabilities
The toolkit.
Languages and tools chosen for the problem, from interface details to underlying systems.
Languages
C++, Python, JavaScript, TypeScript, SQL, HTML, CSS
Frameworks & runtimes
React, React Native, Node.js, Express.js, Django, Flask, FastAPI
Data & databases
PostgreSQL, MySQL, SQLite, NumPy, pandas, scikit-learn, Matplotlib, Seaborn
Tools & systems
Git, Linux, CMake, GitHub Actions, REST APIs, WebSockets, pytest, Ruff
05 / Education
Always learning.
Indian Institute of Technology Madras
Bachelor of Science (BS) in Data Science and Applications
06 / Achievements
Beyond the build.
Competitive programming and community work that shaped how I solve problems and help others grow.
Round 2
Advanced to Round 2 of Meta Hacker Cup 2025.
Codeforces Pupil
Reached Pupil rank and solved 500+ problems across competitive programming platforms.
Codeforces profile ↗LeetCode profile ↗Founded Spark
Founded and led a competitive programming community, organizing regular problem-solving sessions for IIT Madras BS students.
07 / Contact
Send me an email Have something worth building?
I’m always interested in thoughtful software projects and engineering conversations. Let’s connect at 24f1001915@ds.study.iitm.ac.in.