Senior Backend Engineer – Finapps/Access
Fireblocks
Warsaw
Workplace: OnsiteFull timePLN 300,000 - 3,800,000 annuallyFunction: Software EngineeringExperience: 7+ yearsEducation: bachelorsSkills: ["Systems thinking","Reliability focus","Security mindset","Ownership","Collaboration"]Build and scale backend services for high-volume on-chain transaction flows across EVM and non-EVM networks. Own end-to-end backend components and APIs, lead integrations with DeFi protocols and blockchain nodes, and optimize production systems for performance, reliability, and security. Work with product, protocol research, and platform engineering teams to deliver mission-critical access infrastructure, while researching emerging blockchain technologies to keep the platform at the cutting edge.

