About the role

Go Core Client Engineer designing, implementing, and operating Go-based shared client code. Collaborating with teams to deliver features and improve product reliability.

Responsibilities

Design, implement, test, and maintain core client features in Go: connection orchestration, reconnection strategies, NAT traversal, encrypted transport lifecycle, and sync logic.
Ship end-to-end client work: design, implementation, launch, and observability (metrics, logs, traces).
Diagnose and reduce client performance and reliability issues.
Collaborate closely with product, per-platform clients, and platform teams.
Champion engineering excellence by driving code quality, architectural reviews, and design documentation.
Provide technical leadership and mentorship to other engineers, fostering a culture of learning and knowledge sharing.

Strong production experience writing and shipping Go code (experience with Go is required).
Experience operating large Go codebases and designing robust client or distributed systems.
Startup mindset: flexibility to adjust to changing priorities and thrive in an async, remote environment.
Strong written and verbal communication and the ability to collaborate across product and engineering stakeholders
(Nice to Have) Experience with concurrency, performance tuning, and debugging.
(Nice to Have) Solid networking and systems fundamentals: IP, routing, NATs, TCP/UDP, and TLS.
(Nice to Have) Experience with P2P, WireGuard or similar encrypted transports and NAT traversal techniques.