Location: Brazil (UTC-3) Remote: Yes Relocate: No Tech: Rust, Nest, Node.js/TypeScript, React, PostgreSQL, AWS/GCP, Rust

Backend/systems engineer, 18+ years.

Recent: g6k-rs — Rust lattice reduction (LLL/BKZ/sieving, CPU/Metal GPU); Orch8 — Rust durable workflow/AI engine, 2,400+ instances/sec; crypto exchange — matching engine, 4,000+ orders/sec, sub-ms latency.

Looking for: Backend/Systems/Tech Lead — Rust or Node.js, Web3/crypto, AI infrastructure. Full-time or B2B.

CV: https://www.ovasylenko.com | hello@ovasylenko.com