Blockchain Developer

About Us

We’re the world’s leading provider of secure financial messaging services, headquartered in Belgium. We are the way the world moves value – across borders, through cities and overseas. No other organization can address the scale, precision, pace and trust that this demands, and we’re proud to support the global economy. We’re unique too. We were established to find a better way for the global financial community to move value – a reliable, safe and secure approach that the community can trust, completely. We’re always striving to be better and are constantly evolving in an ever-changing landscape, without undermining that trust. Five decades on, our vibrant community reflects the complexity and diversity of the financial ecosystem. We innovate diligently, test exhaustively, then implement fast. In a connected and exciting era, our mission has never been more relevant.

Education

A university degree in computer science or related field. Or equivalent work experience.

Key Responsibilities

• Design and develop blockchain-based applications and smart contracts
• Build and maintain decentralized systems using platforms such as Ethereum, Solana, or Hyperledger Besu
• Write secure, efficient smart contracts using languages like Solidity or Rust
• Conduct code reviews, testing, debugging, and security audits
• Optimize blockchain performance, scalability, and transaction efficiency
• Integrate blockchain solutions with APIs, databases, and cloud services
• Mentor junior developers and contribute to technical leadership
• Stay updated on emerging blockchain technologies, protocols, and best practices

Required Skills & Qualifications

• Strong experience in blockchain development and distributed systems
• Proficiency in Solidity, Rust, JavaScript/TypeScript, Go, or Python
• Deep understanding of smart contracts, cryptography, consensus mechanisms, and Web3 technologies
• Experience with frameworks/tools such as Hardhat, Truffle, and Foundry
• Familiarity with DeFi, NFTs, wallets, and token standards (ERC-20, ERC-721)
• Knowledge of security best practices and vulnerability mitigation
• Experience with CI/CD pipelines, cloud platforms, and agile development

Preferred Qualifications

• Bachelor’s or Master’s degree in Computer Science or related field
• Contributions to open-source blockchain projects
• Relevant blockchain certifications or published projects

Typical Outcomes

• Deliver secure and scalable blockchain products
• Improve transaction efficiency and platform reliability
• Support innovation in decentralized finance, digital assets, and enterprise blockchain solutions

Pay

The estimated salary range for a new hire into this position in Virginia is $121,564 USD Annual to $225,762 USD Annual. Salary may vary depending on job-related factors which may include knowledge, skills, experience, and location. Our compensation packages include a competitive base salary and bonus opportunity for all employees contingent on personal and company performance. Our generous benefits program includes medical, dental, vision and life insurance with no premium costs for our employees and their families, and retirement plan plus matching 401k.