As we continue to scale our ecosystem, we are looking for a Senior Quality Engineer to build and scale automated testing frameworks for our Engineering teams. This is a hands-on, high-impact role where youâll implement our QA strategy, develop automation and testing infrastructure, and help us expand our QA team.
Ensuring the reliability, security, and performance of a blockchain scaling solution is no trivial task. Bugs and vulnerabilities in smart contract execution, rollups, or state proofs can have massive implications. As part of our QA team, you will establish rigorous, automated testing pipelines that validate the integrity of Arbitrumâs protocol, its developer tooling, and its ecosystem. Your work will directly contribute to the security and trustworthiness of one of the most widely adopted Layer 2 solutions in the Ethereum ecosystem.
What you'll do:
Refine and implement the QA strategy for our Engineering teams.
Establish test automation frameworks that validate correctness, security, and performance across Platform Engineering's entire stack.
Integrate QA into the CI/CD pipeline to ensure rigorous pre-deployment validation of protocol updates and software releases.
Develop fuzzing, property-based testing, and other advanced verification techniques for smart contract security.
Execute load and stress testing to measure scalability under high transaction volume.
Work Cross-Functionally to Embed Quality in the Development ProcessPartner with software engineers, smart contract developers, and DevOps to establish a culture of quality across the engineering organization.
Collaborate with researchers and external auditors to automate vulnerability detection and regression testing.
Work closely with developer relations to ensure that SDKs, APIs, and documentation are well-tested and reliable for the growing Arbitrum developer ecosystem.
What you'll need:
3+ years in QA engineering, test automation, or software quality roles.
Strong programming language skills in at least one language such as Go, Rust, JavaScript, Typescript, Python, Java or similar
Strong automation skills, with proficiency in at least one testing framework (e.g., Playwright, Cypress, Pytest, Jest, Mocha, Selenium, etc.)
Deep understanding of CI/CD pipelines and integrating automated testing within DevOps workflows.
Ability to deploy to and administer virtual machines on a cloud infrastructure provider (e.g. AWS, Google Cloud)
Ability to be a team leader & collaborate with various technical and non-technical roles
Ability to drive process change and influence engineering teams to adopt best practices.
Passionate about open-source, decentralization, and blockchain technology.
Experience building QA processes from scratch in a fast-paced, engineering-driven environment.
Experience with blockchain-based, Web3 products and crypto wallets
Experience testing complex web and mobile applications, either manually or through automation
Familiarity with blockchain, Ethereum, and Layer 2 scaling solutions (or strong willingness to learn).
Security mindsetâfamiliarity with fuzzing, property-based testing, and formal verification is a plus.
Experience with performance testing for distributed systems, including load testing and bottleneck analysis.
Prior experience mentoring QA engineers.
Perks:
Remote-first global workforce + NY office
Annual company offsite + team onsites
Professional reimbursement program (facilitates industry conference attendance, certifications, and more)
Medical, dental & vision coverage (US + some other countries)
