Headline

Frontend / Full-Stack Engineer | React, React Native, Next.js, TypeScript | Applied AI & LLM Integration (Claude API) | Building CRM/ERP @ ZenTrades.ai

About

I'm a frontend/full-stack engineer with 6+ years building production React and React Native applications — most recently leading a full frontend rewrite of a CRM/ERP platform as Founding Frontend Engineer at ZenTrades.ai. My background spans two Y Combinator-backed startups (CashBook App, Splitsub) and product/agency work (Zydelo, Unico Connect), where I've owned everything from payments features and card-system integrations to team leadership and frontend architecture. Over the last year I've moved deeper into applied AI. I built and shipped Shvaas, a voice-first conversational AI app, end-to-end — integrating the Anthropic Claude API for natural-language conversation, designing a persistent memory system on Supabase/PostgreSQL, and owning everything from UX to deployment myself. I also use LLM-based coding agents (Claude, Codex, Gemini) daily as part of an agentic development workflow to ship faster without cutting corners on quality. I'm looking for roles where strong frontend/full-stack fundamentals meet real LLM-powered product work. Core stack: React.js, React Native, Next.js, TypeScript, Node.js, Express.js, Supabase, Firebase, MongoDB AI: LLM API integration, prompt engineering, conversational AI systems Portfolio: yoginderkumar.com

Location

Pune City

AI stack

anthropic apis

claude code

codex

elevenlabs

gemini

claudecode

Work experience

Founding Frontend Engineer at ZenTrades.AI, May 2025 - Present · 1 yr 4 mos, Pune District, • Leading a complete frontend rewrite of the core CRM/ERP platform in close collaboration with Product and Design teams. • Using LLM-based coding agents (Claude, Codex, Gemini) as part of an agentic development workflow to accelerate delivery and improve code quality. • Maintaining and enhancing the CRM platform's user experience — shipping new features, improving usability, and resolving performance bottlenecks.

Frontend Lead at Unico Connect, May 2024 - Jun 2025 · 1 yr 2 mos, Delhi, India, • Led the frontend development team designing and building scalable, responsive web applications across multiple devices. • Partnered with stakeholders to define project requirements, technical specifications, and delivery milestones. • Set coding standards and led code reviews, mentoring junior developers to raise team code quality. • Refined project architecture and development processes, reducing development time by 3x on key workstreams.

Software Developer at CashBook App (YC W21), Jan 2022 - Jun 2024 · 2 yrs 6 mos, Remote, • Developed and maintained web and mobile features (React, React Native) for a Y Combinator-backed fintech startup. • Architected the transaction listing feature for the Payments module in the React Native app. • Integrated LivQuik's card system on the web app, giving users access to transaction history and card details. • Shipped multiple web app features that contributed to an 8x increase in user sessions. • Implemented social authentication (Google, Phone, Email), improving platform accessibility.

Frontend Engineer at Zydelo, Mar 2021 - Jan 2022 · 11 mos, United States, • Architected a cross-platform mobile application (React Native) in direct collaboration with clients to translate requirements into shipped features. • Streamlined the iOS/Android development lifecycle to improve delivery efficiency.

Associate Software Engineer at Splitsub, Apr 2020 - Feb 2021 · 11 mos, Gurugram, • Developed and launched two web applications (React.js) for a Y Combinator-backed startup. • Contributed new screens and features to a React Native mobile application.

Education

Bachelor's degree, BCA, Maharaja Surajmal Institute

Computer Science, Pesto Tech

Public links

github: https://github.com/yoginderkumar

yoginderkumar.com: https://yoginderkumar.com/