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#Work & Projects

Selected platforms, APIs, and open-source contributions

Open SourcePR #29453 · Merged

Storybook – Open Source Contribution

Fixed a critical bug in Storybook's Composition mode that broke composed story search. Navigated a large open-source codebase, collaborated with maintainers, and shipped a clean fix.

JavaScriptStorybookGitHub
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PlatformInstagram-scale

Talenzap – Video Processing Pipeline

Built a queue-based batching system for an Instagram-scale video platform to absorb millions of concurrent like events. Designed full video pipeline using AWS Lambda, Elastic Transcoder, and CloudFront for adaptive HLS streaming. Replaced AWS Rekognition with a custom AWS Bedrock LLM pipeline for multilingual content moderation.

Node.jsAWS LambdaCloudFrontHLSAWS BedrockRedis
API DesignProduction

Simbex – Webhook & Rate-Limited API

Designed a public-facing webhook API for a CRM platform enabling third-party services to programmatically create records from external forms. Secured with HMAC-SHA256 signature verification and sliding window rate limiting via Redis.

Node.jsHMAC-SHA256RedisExpress.jsPostgreSQL
AI / NLPGenerative AI

AI Agent Task Manager

Built an AI task manager that uses NLP to auto-categorize tasks by urgency and type, syncing them to the correct Google Calendar. Designed a dual-service system: Node.js API + Flask AI microservice with incremental model training.

Node.jsPythonFlaskTransformersGoogle Calendar API
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Generative AILLM-Powered

RAG UI Component Generator

AI-powered chat that generates design-system-aligned component code from natural language descriptions. Built a custom RAG pipeline over Storybook stories and MDX docs using LangChain + ChromaDB + Anthropic Claude with streaming.

Node.jsAnthropic SDKLangChainChromaDBNext.jsTypeScript
Open SourceOSS

PET Stack – API Boilerplate

Production-ready Node.js, Express.js & PostgreSQL API boilerplate with OpenAPI specifications for documentation and interoperability, and middleware for RBAC (Role-Based Access Control).

Node.jsExpress.jsPostgreSQLOpenAPIRBAC
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More at github.com/jsingh0026