Senior Blockchain Engineer

Skills

About the Role

You will design, implement, and maintain on-chain and off-chain systems, including smart contracts, SDKs, and utility programs. You will build developer-facing APIs and documentation, improve tooling and monitoring, and write open-source code. You will collaborate with business development and sales to influence product direction, engage directly with external developers to gather requirements, mentor junior engineers, and participate in periodic on-call rotations. You will communicate in English and work remotely with an optional office in Porto.

Requirements

• 4+ years of software engineering experience
• Backend engineering experience or familiarity with low-level languages such as Rust or C++
• Blockchain and smart contract experience beneficial but not required
• Proficiency or willingness to learn Rust, Solidity, Python, and TypeScript
• Strong technical communication skills in English
• Ability to mentor engineers of varying skill levels
• Willingness to participate in on-call rotations
• Comfort working in a fast-paced startup DeFi environment

Responsibilities

• Develop and maintain smart contracts and on-chain programs
• Build and maintain developer SDKs and APIs
• Design and improve tooling and monitoring for production systems
• Maintain and operate off-chain services and utility programs
• Collaborate with business development and sales to shape product direction
• Mentor junior engineers and set software design standards
• Engage with the developer community and gather feedback
• Write documentation and open-source software
• Participate in periodic on-call rotations

Benefits

• Remote work (global)
• Optional office in Porto, Portugal