Senior Engineer – Go – Remote

About Celestia Labs
Celestia is the modular blockchain powering unstoppable applications. We are pushing new paradigms for enabling a thriving ecosystem of applications which are performant, interoperable, secure and fully customizable.
About the Team
The Celestia Labs Team is remote first and highly distributed, with English as our primary language for communication. We are looking for self-starters that are excited about working in a fast-paced startup environment.
We do not require team members to live in specific timezones, but much of the team lives and works in the European timezones. As such, team members are expected to be available as needed for team and company events that are scheduled. Generally these are scheduled between 1pm-6pm CET.
About You
Celestia Labs is looking for an elite Software Engineer to join the Celestia Node Team. You will be working on a highly technical team, operating across a cutting edge set of disciplines to support continued improvement of Celestia’s node software as we solve data availability for teams building whatever.
This role will be of specific interest if working at the frontier of performance, scalability, storage, p2p networking and security in blockchain systems appeals to you with a heavy bias for shipping.
Perks
Flexible and remote work environment with multiple onsites each year
Competitive salary and meaningful long-term compensation package
Stipends for home office, coworking space, professional and personal growth
4 weeks annual vacation
Being part of a collaborative, supportive team with opportunities for mentorship and professional growth
401k and healthcare coverage for US team members
Responsibilities
Own and ship key parts of Celestia Node – our data-availability layer that re-transmits block data to light clients and rollups.
Design and optimize Go services for storage, P2P networking, and consensus, using transports such as TCP, QUIC, gRPC, and libp2p.
Benchmark and tune performance by implementing metrics, tracing, and structured logging to identify regressions early.
Drive code quality through design documentation, code reviews, and comprehensive technical documentation.
Support external developers via GitHub and Discord by triaging issues and incorporating real-world feedback into product roadmap.
Who You Are
7+ years of hands-on software engineering experience
Expert-level Go proficiency, including concurrency patterns and performance profiling
Strong understanding of networking & transport protocols (TCP, QUIC, gRPC, libp2p) and peer-to-peer architectures
Proven experience scaling distributed or storage systems with focus on performance, reliability and data integrity
Security-first mindset with knowledge of cryptography fundamentals and threat modeling
Performance engineering expertise: CPU/memory profiling, GC tuning, latency analysis, and capacity planning
Fluency with modern observability tools (Prometheus, OpenTelemetry, etc)
Open-source contributions and excellent asynchronous communication skills
While experience in the blockchain space is preferred – having general excitement about web3 and modular blockchain technology is a must!