Software Engineer - Steller

The world of digital assets is accelerating in speed, magnitude, and complexity, opening the door to new ways for leveraging the blockchain. Fireblocks’ platform and network provide the simplest and most secure way for companies to work with digital assets and it trusted by some of the largest financial institutions, banks, globally-recognized brands, and Web3 companies in the world, including BNY Mellon, BNP Paribas, ANZ Bank, Revolut, and thousands more. 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. What You'll Do 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. What You'll Bring 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 For employees hired to work from the EU, Fireblocks is required by law to include a reasonable estimate of the compensation range for this role. This range is specific to Poland and takes into consideration a wide range of factors that are reviewed when making a hiring decision, such as years of experience, skills, and other business needs. It is not typical for a candidate to be hired at or near the top of the pay range and each compensation decision is dependent on each individual case. A reasonable base salary range estimate for this position is 305ֿ000 – 400000 PLN annually . 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. While we believe competitive compensation is a critical aspect of your decision to join us, we do hope you also spend time considering why our mission and culture are right for you. We are creating something transformational here, and we hope you are as excited about the future as we are Fireblocks' mission is to enable every business to easily and securely acc