Backend and systems engineer. I work on reliability problems — rate limits, durable state, failure recovery — mostly in Python and C/C++.
voice-ai-postcall-pipeline · Python, Celery, Redis, PostgreSQL Post-call processing for a voice AI platform sized at 100K calls per campaign. Continuous token-bucket rate limiting implemented atomically in Lua so concurrent workers can't double-debit; proportional dispatch backpressure instead of a binary circuit breaker; task state in PostgreSQL with a startup recovery scan so a Redis restart doesn't lose work. ~52KB of tests.
payment-collection-agent · Python Conversational agent for payment collection — identity verification, multi-turn state, partial payments, and tool calling, with an evaluation harness and a heavily tested input parser.
intelligenceDashboard · Python Threat-intelligence pipeline: feed ingestion → NLP extraction → clustering → dashboard, over NIST CVE data.
pool_threading · C++, CMake Thread pool and concurrency primitives.
pubsub- · C Publisher/subscriber implementation.
Evaluation harnesses and verifier design for AI coding agents — how you tell whether an agent actually solved a task, and how to build graders that can't be gamed.