Backend systems, event pipelines, and the data layers underneath them.
PLACEHOLDER — Replaced a cron-polling order processor with a Kafka pipeline. Cut end-to-end latency from ~4min to under 900ms.
PLACEHOLDER — Redis-backed rate limiter with sliding window and token bucket. Benchmarked at 40k req/s.
PLACEHOLDER — Typed GraphQL layer over three REST services, with DataLoader batching and query-complexity limits.
PLACEHOLDER — Multi-tenant Strapi setup with custom plugins and a hardened deploy pipeline.
PLACEHOLDER — CLI that surfaces slow queries, missing indexes, and unused ones from pg_stat_statements.
PLACEHOLDER — At-least-once webhook delivery with exponential backoff, signing, and a replay UI.