Software and platform engineer at Tellimer, building data platforms for institutional investors across 170+ emerging markets.
I work end to end — TypeScript and SvelteKit on the front, Go services, event-driven serverless, PostgreSQL and infrastructure-as-code on the back.
Currently:
- Owning Sentinel, a data quality platform validating 20M+ time-series observations (Go, gRPC, TimescaleDB)
- Leading an Excel data add-in used by tier-one banks and asset managers
- Building applied-AI pipelines for automated data quality and classification
- Designing multi-agent engineering workflows and rolling them out across the team
Stack: TypeScript · Go · SvelteKit · Node.js · GraphQL · PostgreSQL · AWS · GCP · Pulumi · Terraform
Open source:
- RustyAuth — self-hosted passkey identity service, shipped to 1.0 GA through LLM-directed development
- zig-s3 — native Zig client for S3 and S3-compatible object stores
📍 London · ✉️ s@seanknowles.dev · LinkedIn





