Mohamed Aboelmagd

TypeScript and Node, specialised toward the database end: NestJS, TypeORM, PostgreSQL. Vitest and Testcontainers for proving it.

Exactly-once delivery — outbox tables, idempotency keys, and what breaks between COMMIT and the side effect.

typeorm-resilient-transactional: making SERIALIZABLE usable in Node. Retry, commit hooks, ordered locking, real benchmarks.

Say hey if you've ever had a 40001 in production, or if you maintain something that should retry and doesn't.