Software Engineer - Solana

Company: Fireblocks

Location: London

Salary: €60,000–€82,000 annually (base salary for Serbia; compensation varies by location and individual circumstances)

Type: Full-time

About the Company

Fireblocks is an industry-leading digital asset infrastructure technology company responsible for 15% of all crypto transactions. Fireblocks is an enterprise-grade platform delivering secure infrastructure for moving, storing, and issuing digital assets and cryptocurrencies. We enable businesses to securely build, run, and scale digital asset operations through the Fireblocks Network and MPC-based Wallet Infrastructure. Our next-generation multi-layer technology protects digital assets from cyber-attacks, internal collusion, and human error. Fireblocks is the only platform that provides insurance for digital assets in storage, transfer, and E&O.

About the Role

Join the Blockchain Backend Infrastructure team and take a position in building and maintaining Fireblocks's blockchain management platform. You'll be responsible for building cutting-edge blockchain infrastructure while implementing high-throughput, real-time scalable software solutions.

As a Blockchain Engineer, you will be instrumental in the research and integration of blockchain technologies into the Fireblocks platform. Your responsibilities will include collaborating closely with foundations and developers to gain a deep understanding of blockchain protocols and on-chain projects, then applying that knowledge to implement new features within the platform.

You will focus equally on external protocol integration patterns and internal wallet infrastructure. This role serves as a technical bridge between raw on-chain capabilities and the wallet features delivered to our customers.

Responsibilities

• Implement modern backend applications and infrastructure in a microservices architecture, using the latest technologies and development practices.
• Deep dive into the latest blockchain technology and become an expert in the fundamentals, protocols, and features of the chains we support.
• Collaborate effectively with developers, engineers, and other roles while demonstrating strong independent problem-solving abilities.
• Contribute to production reliability through on-call participation, incident response, and post-incident follow-ups.

Requirements

• 5+ years of backend development experience in modern languages (Go, Python, JavaScript/TypeScript)
• 3+ years of hands-on blockchain development experience
• Experience working on high-scale distributed systems
• Understanding of microservices architecture and API design
• Knowledge of consensus mechanisms, cryptographic primitives, and distributed systems
• Strong problem-solving skills and attention to detail
• Strong verbal and written communication skills and a collaborative mindset

Preferred

• Experience building blockchain solutions for enterprise or institutional use cases
• Understanding of security best practices for smart contracts and blockchain systems
• Demonstrated ability to apply AI tools in day-to-day development
• Understanding of MPC, multi-signature wallets, or other advanced cryptographic techniques
• Bachelor's degree in Computer Science, Engineering, or a related field
• Experience with Docker, Kubernetes, and Helm

Compensation

The base salary is one component of the total compensation package, which for some roles may include a target bonus, a very competitive equity grant, and very generous benefits.