SELECTED WORK

Projects

Personal projects in agent infrastructure, vector search, and iOS development.

3 projects shown

01 / AI systemsApril 2026 — Present

Autonomous Billing Proxy

Billing agents only after a useful response.

Separates response delivery from verification, then commits the wallet debit and ledger entry in one Postgres transaction.

SHA-256 token storage, request fingerprints, and rate limits protect the gateway. Structured Gemini judgments have a heuristic fallback; every charge stores its verification metadata.

PythonFastAPINext.jsSupabaseGemini AI
Read case study Architecture · decisions · evidence
02 / InfrastructureMarch 2026 — Present

Distributed Vector Database

A distributed ANN engine built from the index up.

Implemented HNSW search, SIMD distance kernels, hash-routed writes, and global top-k aggregation in C++20.

AVX-512 distance kernels use a scalar fallback on unsupported CPUs. A coordinator fans searches out to worker shards, merges their candidates, and returns the global top-k.

C++20gRPCProtobufAVX-512
Read case study Architecture · decisions · evidence
03 / ProductsJuly 2025 — January 2026

LiftCircle

Connecting workout history to useful coaching.

Combines structured workout logs and retrieved training context in a native iOS experience, with evaluation for the coaching backend.

A Python RAG backend uses semantic chunking and gold dataset evaluation for workout analysis. The SwiftUI app brings together secure authentication, RIR logging, and StoreKit subscriptions.

SwiftUIPythonRAGFirebaseNext.js
Read case study Architecture · decisions · evidence

Each case study covers architecture, engineering decisions, and the available evidence, with measurement limitations called out explicitly.

05 / CONTACT

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