Senior Backend Engineer - Distributed Systems (Go, C++, Rust)

Senior Backend Engineer - Distributed Systems (Go, C++, Rust)

Company: Trineo Location: Gdynia, Poland - Remote or Hybrid Contract: B2B English: Communicative (written & spoken)

About the project

You’ll join a small, dedicated team building a cloud-based Video Surveillance platform for our client - a US company in the security industry. This role sits at the edge of that platform: Go services deployed on edge devices that handle video recording and watchdog duties, WebRTC media relay, multi-node coordination, and delivery of events into downstream alarm systems. It’s a production-grade system with real users and real uptime expectations - when something breaks here, it breaks on real hardware in the field.

We’re looking for a senior owner who can architect and ship a service end-to-end, dig deep into Go runtime behavior (goroutines, atomic pointers, race detection, pprof memory analysis), and reason about real-world distributed-systems failure modes.

What you’ll do

• Own one or more Go services in the edge stack: recording, media relay, event bridge, or panel-side integrations
• Build and harden multi-node coordination protocols - time-source ownership, recording handover, peer health detection
• Diagnose tricky production issues - think “recorder restarting hundreds of times over a few hours” or “goroutine leak with multi-GB anon memory after a few hours”: read journal logs, capture coredumps, write the fix
• Design and implement health and observability surfaces: /health endpoints, structured logs, metrics
• Review teammates’ PRs with care and mentor on Go idioms, error handling, and testing
• Take part in canary deploys of edge-side services

What we’re looking for

• 5+ years of professional Go (or a comparable systems language - Rust, C++) on production services
• Comfortable with goroutines, channels, sync/atomic, context.Context and the race detector
• Strong PostgreSQL and MySQL fundamentals: schema migrations, query plans, transactions
• Understanding of media protocols - RTSP, RTMP, WebRTC - or the willingness to ramp up fast
• Linux service operations: systemd, journalctl, cgroups, /proc, ssh, package management
• A test-first bias when fixing distributed-systems bugs
• Communicative English - the product, codebase, and client communication are all in English
• Ability to work mostly in Polish business hours, with flexibility to overlap with the US when needed

Nice to have

• You’ve built or operated a video pipeline - live streaming, surveillance, or broadcast
• Experience with pion, gortsplib, GStreamer, or similar WebRTC / RTSP stacks
• Experience with HMAC, JWT, OAuth - security at the bytes level
• You’ve shipped behind a feature flag and rolled back through it

What we offer

• A long-term role on a stable, production project for an international client
• Remote or hybrid work (Gdynia / Tricity area for hybrid)
• Real ownership - you’ll own services end-to-end, from design to production
• Direct collaboration with an experienced dev team and the client
• Hard, interesting engineering problems: distributed systems, real-time video, and Go running on edge hardware

Recruitment process

• Intro call with Trineo
• Technical interview with the client
• Offer (or honest feedback if it’s not a match)

Trineo is a software services company based in Gdynia. For this role we’re building a dedicated development & QA team working in a time-and-material model for our client.