Headline

Senior Full-Stack Engineer | Building Context Infra for AI Agents | LLMs · RAG · Next.js · React Native · Node.js · Go | Shipping 0→1 products

About

I turn ambiguous ideas into shipped products — from LLM agent infrastructure to consumer apps used in production. I'm a full-stack engineer who builds 0→1: web, mobile, and backend, plus the applied-AI layer on top. Right now I'm building context/enforcement infrastructure for AI agents — working with LLMs, pre-trained models, vector databases, and long-term-memory systems. Over the last 4+ years I've shipped across fintech, e-commerce, ad-tech, Web3, and EV. A few highlights: → Co-founded and led engineering (CTO) at EroEV, an EV-charging + QR-payments platform — featured in Inc42's "Top 30 Startups to Watch" (2022). → Built and manage a live event-management app for FSAI, published on the App Store and Play Store. → Led development as tech lead on Unveil, an NFT art marketplace, plus Web3 work for Kleoverse and Sourcio. → Shipped high-traffic features for weather.com and giftcash.com — ad flows, payments, refunds, and performance optimization. What I do best: → Ship polished full-stack products fast, end to end → Apply AI/LLMs to real product problems (agents, RAG, vector search, memory) → Optimize performance — reusable components, lazy loading, custom hooks, memoization → Own the hard integration layer: payments, auth, real-time data, microservices Core skills: Full-Stack Development, AI/LLM Applications, AI Agents, RAG, Next.js, React, React Native, Node.js, Golang, Python, TypeScript, Microservices, Vector Databases, AWS, Solidity, System Design. Open to Full-Stack / AI Engineer roles. Let's build something — reach me at shekharkumar235838@gmail.com.

Location

Bengaluru

AI stack

claude code

codex

cursor

Work experience

Builder at Stealth Startup, Apr 2026 - Present · 6 mos, Building an Enforcement Engine for AI agents — one line on the stack: e.g., "guardrail/policy layer for LLM agents using Python, vector search, and TypeScript".

Senior Software Engineer at Pure Billion Technologies, Aug 2022 - Present · 4 yrs 2 mos, Remote, Full-stack engineer across web, mobile, backend, and applied AI for clients in ad-tech, Web3, and events. • Built and now maintain the FSAI event-management app (React Native), live on App Store & Play Store. • Led development & mentored 3 engineers as tech lead on Unveil, an NFT art marketplace; owned Solidity code review + implementation planning • Cut load/render time by 20% by introducing lazy loading, custom hooks, virtualization, useCallback/useMemo, and reusable component libraries • Built long-term-memory AI features using pre-trained models + vector databases • Shipped a Go backend service with session-based auth • Owned ad flows (jwPlayer, Taboola) for weather.com and the full purchase/refund flow for giftcash.com, improving [metric]

Co-Founder & CTO at EroEV India, Aug 2022 - Dec 2023 · 1 yr 5 mos, Co-Founder & CTO at EroEV — Built and deployed an EV charging station system enabling fleet owners to charge vehicles and make seamless QR-based payments. Led the end-to-end development of the charging hardware and payment integration platform. EroEV was featured in Inc42’s “Top 30 Startups to Watch” in October 2022.

Software Engineer at Invest with Tribe, Feb 2022 - Aug 2022 · 7 mos, Built backend services for a stock investment platform enabling experts to publish investment strategies for retail in-vestors. Developed analytics dashboards and performance leaderboards used by 1k+ users to evaluate expert investment perfor-mance. Implemented scheduled backend jobs for live stock-price updates, return calculations, and portfolio data processing. Integrated AWS SQS and Twilio WhatsApp notifications for real-time trade and basket updates, improving asynchronousevent processing and user communication.

SDE at Invest with Tribe, Feb 2022 - Jul 2022 · 6 mos, Remote, - Implemented social login like login with Truecaller, Facebook or Google. - Worked CronJobs tasks for Stocks LTP update and total return percentage on a trade and send notifications to investors using AWS SQS and Twilio WhatsApp notifications. - Worked on APIs that will calculate return percentage of an investor on weekly, monthly and yearly basis and rank them. - Worked on Stock Basket and Basked versioning system.

Intern at Primates Development Pvt Ltd, Oct 2021 - Jan 2022 · 4 mos, Remote, - Worked on Coaching and counselling website using React. - UI enhancement and bug fixes.

Education

Bachelor of Technology, Computer Science, Techno Main - Salt Lake