--- title: "Sumit Singh - Software Engineer in Mumbai Metropolitan Region | Tal" description: "Meet Sumit Singh, Backend / Software Development Engineer | Node.js · TypeScript · MongoDB · Redis | Building auth & payment infra @ SwapSo | AI & Data Science @ TCET | 600+ DSA based in Mumbai Metropolitan Region. AI stack includes antigravity, claude code, and claude. Explore public work links in..." image: "https://tal.club/meet/sumit-singh-3/share-image" --- # Sumit Singh on Tal ## Headline Backend / Software Development Engineer \| Node\.js · TypeScript · MongoDB · Redis \| Building auth & payment infra @ SwapSo \| AI & Data Science @ TCET \| 600\+ DSA ## About Backend\-focused Software Engineer building production systems — authentication, payments, and event\-driven infrastructure — on Node\.js, TypeScript, MongoDB, and Redis\. I'm a B\.Tech AI & Data Science student \(CGPA 8\.6/10\) at TCET Mumbai with 3 internships and 3 shipped products across fintech, govtech, and healthtech\. I care about writing backend systems that hold up under real traffic: idempotent flows, secure auth, caching, rate limiting, and clean API design\. What I'm working on now \(SwapSo\): \- OTP authentication backend with TTL\-based expiry, rate limiting, CAPTCHA, and retry/fallback logic\. \- A provider\-abstracted gift\-card rewards integration for a crypto wallet — event\-driven webhook processing with HMAC\-SHA256 verification, an idempotent USDC cashback engine, and AES\-256\-GCM encryption\. \- Production setup with Redis caching, MongoDB Atlas, and connection pooling\. A few things I've built: \- JanSetu — a real\-time voice\-to\-map disease reporting pipeline \(Python NLP \+ Node\.js \+ Google Maps \+ Twilio\) that cuts HQ reporting delays from days to seconds\. \- Adzap — a full\-stack ad platform with RBAC, AI creative generation \(75% faster production\), and an ETL analytics dashboard that improved campaign ROI tracking by 50%\. \- Gov Assist — a Chrome extension that matches user documents against government schemes \(92% accuracy\) and auto\-fills applications\. Beyond code: 4x hackathon winner, SIH institute\-level finalist, and Technical Head at GDSC TCET, where I led workshops for 200\+ student developers\. 600\+ DSA problems solved\. I'm open to Backend / SDE roles, internships, and collaborations\. Let's build something that works at scale\. 📫 sumitharisingh@gmail\.com \| \+91 85916 18604 🔗 GitHub: github\.com/sumitsingh24k ## Location Mumbai Metropolitan Region ## AI stack antigravity claude code claude gemini langchain openai ## Work experience Software Engineer at SwapSo, May 2026 \- Aug 2026 · 4 mos, Mumbai, Maharashtra, India, Backend & full\-stack engineering for fintech products — authentication, integrations, and scalable services\. \- Built an OTP authentication backend \(Node\.js, TypeScript, MongoDB, Redis\) with TTL\-based expiry, rate limiting, CAPTCHA, and retry/fallback logic — reducing DB load and improving verification response time under traffic spikes\. \- Architected a provider\-abstracted gift\-card rewards integration for a crypto wallet: event\-driven webhook processing with HMAC\-SHA256 verification, an idempotent 1\.25% USDC cashback engine, AES\-256\-GCM encryption, and 400\+ brand catalogue sync — a reusable integration pattern across reward providers\. \- Configured Redis caching, MongoDB Atlas, and connection pooling for production\-scale deployment; shipped the React Native catalogue/voucher UI\. Tech: Node\.js, TypeScript, Express\.js, MongoDB, Redis, React Native Joint Technical Head at GDSC TCET, Sep 2025 \- Jul 2026 · 11 mos, Mumbai, Maharashtra, India, \- Designed and delivered technical workshops and live demos for 200\+ student developers, adapting explanations of complex topics for mixed\-skill audiences\. \- Lead technical direction and developer community initiatives on campus\. Software Engineer at The Sibling Corp, Sep 2025 \- Dec 2025 · 4 mos, Mumbai, Maharashtra, India, Built Quick Basket — a farmer\-to\-consumer marketplace that eliminates supply\-chain middlemen and improves farmer revenue margins\. \- Designed and shipped the platform end\-to\-end \(Node\.js, Express\.js, MongoDB, React Native\), launched on Android and iOS\. \- Architected scalable REST APIs, data models, and schemas for order management; owned the full feature lifecycle from client requirements through design, build, and mobile deployment\. Tech: Node\.js, Express\.js, MongoDB, React Native Frontend Developer at Growigh, Jul 2025 \- Sep 2025 · 3 mos, Gwalior, Madhya Pradesh, India, \- Built a fully responsive React\.js landing page integrated with backend REST APIs — improved Lighthouse score from 64 to 91/100 via code splitting and asset optimization\. \- 40% faster load time and 25% higher average session duration post\-launch\. \- Ensured cross\-browser compatibility and responsiveness across desktop, tablet, and mobile\. Tech: React\.js, HTML, CSS, JavaScript, REST APIs Problem Setters at TCET Shastra\-Coding Club, Oct 2024 \- Jul 2025 · 10 mos, Mumbai, Maharashtra, India, \- Designed competitive programming problems for inter\-college contests\. ## Education Bachelor of Technology \- BTech, Artificial Intelligence and Data science, Thakur College of Engineering & Technology Shaymnarayan Thakur Marg Thakur Villaige Samata Nagar Kandivli \(E\) Mumbai 400 101 12th, Computer Science, Thakur College of Science & Commerce ## Public links - github: https://github\.com/sumitsingh24k - leetcode: https://leetcode\.com/sumit24k - sumitttt\.vercel\.app: https://sumitttt\.vercel\.app/ [View the original profile](https://tal.club/meet/sumit-singh-3) ```json { "@context": "https://schema.org", "@graph": [ { "@type": "Person", "@id": "https://tal.club/meet/sumit-singh-3#person", "name": "Sumit Singh", "url": "https://tal.club/meet/sumit-singh-3", "image": "https://tal.club/meet/sumit-singh-3/profile-photo.jpg", "description": "Meet Sumit Singh, Backend / Software Development Engineer | Node.js · TypeScript · MongoDB · Redis | Building auth & payment infra @ SwapSo | AI & Data Science @ TCET | 600+ DSA based in Mumbai Metropolitan Region. 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