Blockchain Test Engineer - Hybrid

ABOUT USWe’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 organisation 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. Swift now has a presence in 200+ countries and legal territories to serve a community of more than 12,000 banks and financial institutions.

As a Blockchain Test Engineer at S.W.I.F.T, you will play a crucial role in ensuring the quality, reliability, and security of our blockchain-based solutions. You will be responsible for designing, developing, and executing comprehensive test strategies to validate the functionality, performance, and integrity of distributed ledger technologies integrated into our financial messaging infrastructure.

What to Expect:

In this role you will:

Design, develop, and implement robust test plans, test cases, and test scripts for blockchain applications, smart contracts and related distributed systems

Execute various types of testing, including functional, integration, performance, security, and regression testing, specifically tailored for blockchain environments

Test and integrate blockchain protocols and platforms, including Ethereum-compatible networks (e.g., Hyperledger Besu), Cosmos and Canton Test smart contracts for correctness, security vulnerabilities, and edge cases

Collaborate closely with development teams and blockchain architects to understand technical specifications and ensure testability of features

Perform load, performance and stress testing to assess scalability and transaction throughput

Validate blockchain network behavior, including consensus mechanisms, node synchronization, and fault tolerance

Test integrations with wallets, APIs, backend services

Identify, document, and track software defects and work with development teams to ensure timely resolution

Develop and maintain automated test frameworks and tools to improve efficiency and coverage of blockchain testing

Contribute to the continuous improvement of testing processes, methodologies, and best practices within a blockchain context

Stay up-to-date with emerging blockchain technologies, testing tools, and industry trends

Participate in code reviews and provide constructive feedback to enhance code quality and testability

Ensure adherence to S.W.I.F.T.'s quality standards and regulatory compliance requirements in all testing activities

What will make you successful:

We are seeking professionals with:

Bachelor's Degree in Computer Science, Software Engineering, or a related field

Proven experience in software quality assurance or testing, with a significant focus on blockchain or distributed ledger technologies

Solid understanding of blockchain fundamentals, including consensus mechanisms (PoW, PoS, BFT), smart contracts, cryptography, and distributed system architectures

Proficiency in at least one programming language commonly used in blockchain development or testing (e.g., Python, JavaScript, Go, Java, Solidity)

Experience with test automation frameworks and tools (e.g., Selenium, Playwright, Jest, Truffle, Hardhat)
Familiarity with CI/CD pipelines and tools (e.g., Jenkins, Git Lab CI)
Strong analytical and problem-solving skills, with meticulous attention to detail

Excellent communication and collaboration skills, with the ability to articulate technical concepts clearly to both technical and non-technical stakeholders

Preferred Qualifications:

Master’s Degree in Computer Science, Software Engineering, or a related field

Experience with p…