At Veido, I rebuilt Vektor TMS’s legacy import-only fuel module into a full product, adding card controls, transaction ingestion, settlement deductions, anomaly flagging, analytics, and IFTA. It handles more than $250K per month in fuel spend for one customer.
I designed the module’s database and Go/gRPC microservices on GCP and Spanner, migrated with backfills, and used ClickHouse for analytics. I also built its React UI and stabilized existing provider integrations while adding new ones.
At Sagi, I reduced MongoDB query latency from 25 ms to under 4 ms through aggregation pipeline optimization. I built REST APIs and business workflows in Go, and developed payment and notification workflows using Temporal, Redis queues, and Go worker pools.
