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Senior Full-Stack Engineer with 7+ years building high-performance React/Next.js platforms and LLM-integrated products for enterprise clients and SaaS ventures. I lead frontend architecture, ship production systems end-to-end, and focus on performance, quality, and scalable design. I’ve delivered AI-native dashboards, RAG-based workflows, authentication-safe web apps, and multi-CDN streaming experiences—plus I’ve founded and launched SaaS products from architecture through GTM. I’m now looking to build AI-native products at scale as a senior IC.…Senior Full-Stack Engineer with 7+ years building high-performance React/Next.js platforms and LLM-integrated products for enterprise clients and SaaS ventures. I lead frontend architecture, ship production systems end-to-end, and focus on performance, quality, and scalable design. I’ve delivered AI-native dashboards, RAG-based workflows, authentication-safe web apps, and multi-CDN streaming experiences—plus I’ve founded and launched SaaS products from architecture through GTM. I’m now looking to build AI-native products at scale as a senior IC.

Jasvinder Singh

AI Engineer, Front-End Developer, Full Stack Developer, +7

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Senior Full-Stack Engineer with 7+ years building high-performance React/Next.js platforms and LLM-integrated products for enterprise clients and SaaS ventures. I lead frontend architecture, ship production systems end-to-end, and focus on performance, quality, and scalable design. I’ve delivered AI-native dashboards, RAG-based workflows, authentication-safe web apps, and multi-CDN streaming experiences—plus I’ve founded and launched SaaS products from architecture through GTM. I’m now looking to build AI-native products at scale as a senior IC.…Senior Full-Stack Engineer with 7+ years building high-performance React/Next.js platforms and LLM-integrated products for enterprise clients and SaaS ventures. I lead frontend architecture, ship production systems end-to-end, and focus on performance, quality, and scalable design. I’ve delivered AI-native dashboards, RAG-based workflows, authentication-safe web apps, and multi-CDN streaming experiences—plus I’ve founded and launched SaaS products from architecture through GTM. I’m now looking to build AI-native products at scale as a senior IC.

Available to hire

Senior Full-Stack Engineer with 7+ years building high-performance React/Next.js platforms and LLM-integrated products for enterprise clients and SaaS ventures. I lead frontend architecture, ship production systems end-to-end, and focus on performance, quality, and scalable design.

I’ve delivered AI-native dashboards, RAG-based workflows, authentication-safe web apps, and multi-CDN streaming experiences—plus I’ve founded and launched SaaS products from architecture through GTM. I’m now looking to build AI-native products at scale as a senior IC.

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Work Experience

Senior Full-Stack Engineer (Independent Contractor)

April 1, 2024 - Present

Delivered production full-stack applications for 5+ early-stage startups using Next.js 14, TypeScript, and related frontend architecture. Founded and shipped AutomateMyDM (Instagram DM automation SaaS) including OAuth and webhook pipelines; launched SikhiSidak (live audio-streaming platform) with multi-CDN architecture for 10,000+ concurrent listeners; built Samagam Updates (event directory) with server components, real-time search, and role-based auth; diagnosed and fixed an auth race condition to guarantee session integrity across tabs.

Frontend Architecture Lead (Sandbox GPT) at Publicis Resources – Marcel

January 1, 2023 - March 1, 2024

Led frontend architecture for Sandbox GPT, an enterprise generative-AI dashboard used by 1,000+ employees. Unified OpenAI text generation, image synthesis, PDF document Q&A, and text-to-speech in a single Next.js app. Designed prompt-workflow orchestration and a SQL-backed conversation-memory layer enabling persistent multi-turn sessions. Improved initial page-load time by 25% using Next.js lazy-loading and bundle-splitting, increasing daily active usage.

Web3/NFT Marketplace Architect at Colexion

September 1, 2022 - December 1, 2022

Architected and developed 3 Web3/NFT marketplace applications deployed on AWS EC2/S3. Improved React rendering performance by 25% and achieved zero critical post-release defects.

Enterprise SaaS Developer (Multiple Projects) at Publicis Sapient – Monotype

May 1, 2022 - January 1, 2024

Shipped 50+ features across enterprise SaaS products across agile sprints spanning multiple cross-functional teams. Expanded automated test coverage by 40% using Jest and React Testing Library, reducing production defects by 20%. Rebuilt the MyFonts.com catalog UI (40,000+ fonts) as a responsive, WCAG 2.1-compliant component library improving search navigation and page-load speed.

Audit Workflow Automation Developer at Deloitte (via Happiest Minds)

December 1, 2021 - April 1, 2022

Built Cortex, an audit-workflow automation platform using a composable module architecture. Improved code reuse by 25% and reduced regression cycles by adding and expanding Jest test suites.

Cloud Analytics Dashboard Developer at Wipro – Ericsson

June 1, 2021 - December 1, 2021

Delivered Cloud ENIQ network-analytics dashboards using enterprise-grade TLS data flows with an Elastic UI SDK. Reduced analysis time by 30%.

Senior Software Developer at CodersBrain

June 1, 2021 - March 1, 2024

Embedded as a senior contractor across enterprise clients (Publicis, Monotype, Deloitte, Wipro, Ericsson). Mentored 5 junior engineers through structured code reviews; standardized quality gates via SonarQube; authored architecture docs to reduce new-hire ramp-up time. Shipped and improved multiple enterprise UI and platform features, including performance, accessibility, and automated testing.

Frontend Engineer at Ornate Solar

October 1, 2020 - January 1, 2021

Built Reqip, an internal ticketing/support workflow system using React, Redux, RxJS, and Django REST. Added Jest-based regression coverage that reduced average ticket-handling time by 30%. Simplified automation workflows for support operations.

Frontend Engineer at Simplified Automation

August 1, 2017 - January 1, 2019

Automated 10+ manufacturing workflows across 3 global production facilities using React dashboards and Django integration. Improved operational efficiency by 35% and reduced manual reporting effort by 90%.