Backend / distributed systems engineer
Replaced legacy Python ETLs across 100+ tenants — nightly runs 5h → 15min, queries 15s+ → 1–2s, and 85% lower database cost (~$25K/yr) after retiring RDS OLAP instances.
Go saga-based ingestion keeping DynamoDB and OpenSearch consistent, with conditional-write locks serializing 3.9M+ concurrent writes across 7,800+ manufacturers at p99 under 5 ms.
Internal platform spinning up 100+ isolated PR environments. Cut review setup 95%, lifted team velocity 30%, drove 7× DAU growth on the surface.
want the long version?
See the full portfolio →