## systems engineer

I build backend, security, data, and distributed systems with a focus on
correctness, reliability, and fast execution. My strongest work includes
Elixir/OTP infrastructure, cryptographic protocol implementations,
high-scale analytics pipelines, authentication systems, fintech
backends, and production LLM integrations.

[resume](/resume)[libraries](/libraries)

### Low-level protocol work

Complete Elixir implementations of Noise Protocol, Nostr,
Gemini/SpaceBoy, Reticulum, and native cryptography bindings.

### Backend and data systems

Elixir/Phoenix services, SQL-heavy analytics workloads, background
workers, event-driven architectures, and fintech payment workflows.

### Security and reliability

Zero-downtime authentication migration, SSO, SAML, MFA, secure
credential flows, observability, incident tooling, and operationally
simple systems.

### expertise

- **Elixir & OTP** - fault-tolerant, concurrent systems
- **EventSourcing / CQRS** - audit-ready, scalable architectures
- **Cryptography** - secure protocols, key management, E2EE
- **Distributed Systems** - resilient, observable backends
- **LLM Integration** - AI-powered features, designing agentic workflows
  and systems
- **Authentication** - OAuth, MFA, secure credential management

## contact

- Web - [sgiath.dev](https://sgiath.dev)
- Email - <FilipVavera@sgiath.dev>

### social media

- Nostr -
  npub1qqqqq2z\...3hlwh5
- Twitter - [\@SgiathDev](https://twitter.com/SgiathDev)
- XMPP - [sgiath@sgiath.dev](xmpp:sgiath@sgiath.dev)

### other links

- GitHub - [sgiath](https://github.com/sgiath/)
- SourceHut - [\~sgiath](https://git.sr.ht/~sgiath/)
- PGP -
  0x70F9C7DE34CB3BC8
  [(download key)](/sgiath.asc)