Things I've built.

Ingests hundreds of newsletters and articles a week. Runs LLM passes over each piece — extraction, clustering, ranking. Delivers six daily briefings tailored to professional lenses. The editorial voice, the caching keyed on content hash, the Postgres schema, the eval harness — I built the whole thing and I'm still shipping to it daily.

Impact Powers promitb.dev's daily feed · 420+ briefings · 12K+ sources analyzed

Python · FastAPI · Next.js · pgvector · Temporal · Anthropic

An OpenClaw-inspired agent sandbox platform on ECS with Cognito + Federate auth. Compliance-tested (DyePack). Gives internal teams a safe place to let an agent run loose without chewing up shared infrastructure.

TypeScript · CDK · ECS · Cognito · K3s

The site you're reading. Daily briefings fed from a Mac Mini Postgres. Newsletter on D1 + Resend. Search on a 180KB lazy-loaded JSON index. A hand-built editorial voice, every page designed like a magazine feature.

Impact You're looking at it · public since 2024

Astro 4 · React 19 · Cloudflare Pages · Postgres · D1

macOS menu bar dictation. Local Whisper for the recognition, Bedrock for the post-processing pass that fixes tone, grammar, names. The latency is under 500ms cold, ~120ms warm. I dictate most of my emails and commit messages into it now.

Impact Shipped to my own machines · replaced Apple Dictation entirely

Swift 6 · SwiftPM · WhisperKit · AWS Bedrock

An Electron desktop app that pairs a conversational surface with precise tool execution. Not a Cursor fork, not a Cline wrapper — my own opinion about how a code assistant should feel when you're the one driving.

Electron · TypeScript · Bun · Drizzle · SQLite

An EC2-backed personal AI platform. API proxy (Claude, GPT-5, local), LibreChat, Dify for workflows, n8n for automation — all behind WebAuthn SSO. My single source of truth for every AI query I run.

FastAPI · CDK · Docker Compose · Cloudflare Tunnels · WebAuthn

Led the team designing automated policy-violation detection for the Music catalog. Built a streaming fraud platform doing stateful ops over millions of events per second. The architecture held up through four Black Fridays and a global pandemic.

Impact Protected catalog and payments against billions in abuse attempts

Java · Scala · Apache Flink · Kinesis · DynamoDB

Led the launch of BERT-based natural language understanding on Amazon Music's voice UX across Alexa devices. Shipped online multi-armed bandit ranking for voice search — first production NLU deployment at that scale in the division.

Impact Statistically significant lift in voice search success rate

Python · PyTorch · BERT · Multi-armed bandits

Semantic search on the product detail page using deep-learning embeddings + approximate nearest neighbor lookups. Then architected an offer-aggregation platform behind Home, Search, and PDP, handling 200K RPS at peak.

Impact 143 bps lift in instant-answer rate · platform shipped 200K RPS

Java · ANN · Deep embeddings · Offer aggregation

One of the first engineers on Amazon.in Fashion. Built the first globalized size-chart solution across international marketplaces. A/B tests kicked in ~₹57MM in incremental annualized revenue.

Impact ₹57 MM incremental annualized revenue

Java · React · A/B testing · i18n

Nights and weekends: founding engineer at a pregnancy-care startup. Features, rating models, the blur of trying to build a real product from scratch. I still count what I learned there as the foundation for everything since.

Impact 0 → 1 · founding engineer

Android · Node.js · MongoDB · Rating models