ABOUT COSMOS LABS
Cosmos Labs is the core team driving the development and growth of the Cosmos blockchain ecosystem, Cosmos technology stack, and the Cosmos Hub. Cosmos powers the largest network of vertically integrated Layer 1 blockchains in the world, with 200+ blockchains using the Cosmos Stack in production.
At Cosmos Labs, we focus on:
- Developing new software and products for the Cosmos Stack and its customers
- Building and maintaining strong customer relationships
- Growing adoption of the Cosmos Stack
- Fostering a vibrant community of builders and end users
We prioritize core team and senior talent working in person in NYC and Berlin, while also hiring exceptional remote talent within 6 hours of the NYC timezone.
CORE TEAM RESPONSIBILITIES
- Solve hard technical problems at the cutting edge of blockchain research alongside a world-class team
- Make bold technical and strategic decisions across product development, engineering, marketing, sales, and operations
- Play a key role in shaping company culture, engineering practices, products, and customer relationships
HOW WE WORK
- Ambition & Work Ethic: Initiative, self-development, and adaptability are essential
- Collaborative Decision-Making: Preference for thoughtful dialogue over unilateral decisions
- Learning & Documentation: Obsessive about documenting everything, learning fast, and shipping with short feedback cycles
- Inclusion & Diversity: Strong commitment to a diverse workplace; encourages individuals from underrepresented backgrounds to apply
BENEFITS
In the USA
- 18 days paid leave
- Premium health insurance
- Competitive regional compensation + token compensation
- Office space and accommodations for remote work
Elsewhere: Competitive and equitable benefits according to local norms
ROLE: SENIOR BACKEND SOFTWARE ENGINEER
We are looking for a Senior Backend Software Engineer to build the platform powering the next generation of enterprise blockchains. You’ll work across multiple domains—from cross-chain connectivity to core platform infrastructure—and take ownership of your work while delivering secure, reliable, and maintainable software.
SUCCESS METRICS (3-6 MONTHS)
- Own and drive execution on platform workstreams, focusing on cross-blockchain communication
- Increase throughput on integrations and interoperability work
- Identify and implement service reliability improvements
RESPONSIBILITIES
- Contribute to cross-chain infrastructure, enabling customer blockchains to interoperate
- Develop testing and observability strategies for on-chain and off-chain interactions
- Work on core platform infrastructure supporting enterprise blockchain deployments
- Own end-to-end scoping and execution on workstreams
- Deliver software that is secure, well-tested, and maintainable
- Ensure system reliability and performance
REQUIREMENTS
- 4+ years of software engineering experience
- Interest in blockchains/crypto
- Commitment to security and rigorous software development practices
- Excellent communication skills
BONUS SKILLS
- Proficiency in Go, Rust, or Solidity
- Experience in the Cosmos ecosystem
- Blockchain development experience
- Familiarity with IBC or other interoperability protocols
- Experience with distributed systems, Kubernetes, or cloud infrastructure
- Operating production systems experience
Cosmos Labs is for engineers who push boundaries, take ownership, and deliver world-class solutions in the blockchain ecosystem.
