Jay Singh

Fullstack Engineer InternRemote – New Jersey, USA

• –Designed multi-tenant RBAC with Auth0 across 10+ user roles, integrating role-specific SendGrid onboarding flows that reduced signup time by 40% for a mortgage workflow automation platform.
• –Configured wildcard SAN SSL on AWS EC2 for dynamic tenant domains and Dockerized the Next.js, NestJS, and Django/Ollama stack, including semantic-search infrastructure for LLM-based document retrieval.
• –Built an 8-language UI layer and WebSocket-based conversation system with real-time translation, synchronizing platform conversations with email which increased base-customer coverage and was appreciated during demos.

React Native InternOn-Site – Mumbai, India

• –Built an Android fintech app in Expo from Figma designs, integrating OAuth2 Gmail access and Android SMS APIs to aggregate user financial data into a vendor CRM interface.
• –Implemented client-side PDF generation for CRM and inventory workflows, reducing server load and configuring nightly builds for QA validation.

Maintainer NativeFlow, Top Contributor at TheOdinProject

• –Followed the standard open-source practice to ensure atomicity in commits/pull-requests corresponding to issues, building a complete ecosystem of dev-tools which support the core library.
• –Participated in Node:Revamp Project, with most of the work being discussion-heavy around language design rather than writing code and fixing backend issues on the TheOdinProject Website.

• –An utility-first styling library for React Native, enabling Tailwind-like styling but using objects.
• –Wrote Docusaurus documentation with live Expo examples and made a VS Code Intellisense extension for dev-exp.
• –Benchmarked only 8% slower than the native StyleSheet API, crossing 50k+ downloads on NPM.

• –An AI-assisted grading platform for teachers to process question papers and map student answer sheets.
• –Highlighting feature using box-bounding and human-first AI workflow for grading answer sheets with AI Assistance.
• –Integrated DeepSeek Vision and Azure Storage to extract question distributions.

• –A decentralized crypto investment app with copy trading, TipLink for wallet-less onboarding.
• –Used CoinGecko and Jup.ag for live pricing with Gemini-based market analysis and a creator loyalty reward system.

• –Connection-free file transfer for android and desktop using QR codes as a medium.
• –Chunked files into 800-byte MD5-verified QR payloads flashed at 10 QR/sec with auto-retry on bad scans.
• –Built a matching Web UI which only supports Send functionality with cross-device support.