systems engineer
I build backend, security, data, and distributed systems that need to stay correct under pressure. Most of my work is in Elixir/OTP infrastructure, cryptographic protocols, analytics pipelines, authentication, fintech backends, and production LLM features.
low-level protocol work
Complete Elixir implementations of Noise Protocol, Nostr, Gemini/SpaceBoy, and Reticulum, plus native cryptography bindings when the BEAM needs help.
backend and data systems
Elixir/Phoenix services, SQL-heavy analytics, background workers, event-driven systems, and payment flows where correctness matters more than ceremony.
security and reliability
Authentication migrations, SSO, SAML, MFA, secure credential flows, observability, incident tooling, and systems operators can understand at 3 a.m.
expertise
- Elixir & OTP - concurrent systems that fail predictably and recover cleanly
- EventSourcing / CQRS - audit trails and domain workflows
- Cryptography - protocols, key handling, E2EE
- Distributed Systems - backends with clear failure modes and useful telemetry
- LLM Integration - product features, agent workflows, and eval-aware integrations
- Authentication - OAuth, MFA, SSO, credential lifecycle
contact
- Web - sgiath.dev
- Email - [email protected]
social media
- Nostr -
- Twitter - @SgiathDev
- XMPP - [email protected]
other links
- GitHub - sgiath
- SourceHut - ~sgiath
- PGP - (download key)