Things I build and maintain

Turn FastAPI BackgroundTasks into a production-grade task system

A thin layer over FastAPI's built-in BackgroundTasks that adds the guarantees real workloads need: automatic retries, persistence across restarts, lifecycle tracking and a live dashboard. It does this without a separate worker process or a message broker, and existing task signatures stay unchanged.

• Retries with configurable delays and exponential backoff
• Task persistence and full lifecycle history (PENDING, RUNNING, SUCCESS, FAILED, INTERRUPTED)
• Live admin dashboard over Server-Sent Events
• Pluggable backends: SQLite, Redis, PostgreSQL, MySQL
• Idempotency keys, priority and named queues, cron and interval scheduling
• Multi-instance deployments with atomic requeue claiming and optional argument encryption

Feature flags and runtime control for Python APIs

A control layer that changes how endpoints respond at runtime, with no code changes and no redeploy. Roll routes out to user segments, disable a broken endpoint instantly, enforce dynamic rate limits and schedule maintenance windows, across a single ASGI service or a multi-service fleet.

• Feature flags with targeting rules, segments and percentage rollouts (OpenFeature standard)
• Rate limiting by IP, user, API key or globally, with tiered and burst allowances
• Scheduled maintenance windows that activate and deactivate automatically
• Decorator-first FastAPI integration: @maintenance, @disabled, @rate_limit, @deprecated
• HTMX admin dashboard with live SSE updates, webhooks and audit logging
• Backends: in-memory, JSON file, Redis, or a central Waygate Server

Open-source multi-testing framework

Morgan Stanley's functional testing framework. It spins up a local live environment (mocks, service connections, drivers) and runs rich, tagged test suites against it, producing unified JSON, PDF and XML reports. I contribute fixes and test infrastructure used across low-latency execution systems.

• MultiTest: functional testing with a large assertion library and report rendering
• Inheritable drivers to build a local live environment
• Parallel execution, test tagging and selective runs
• Integrations with other unit-testing frameworks such as GoogleTest