As we continue to scale our ecosystem, we are looking for a Senior Quality Engineer to build and scale automated testing frameworks for our Full Stack Engineering team. 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 growing 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:
Design and scale an end-to-end QA strategy for our Full Stack Engineering team
Build and maintain sophisticated test automation frameworks (Playwright/Cypress) that validate security, performance, and correctness across the entire stack
Seamlessly integrate automated testing into our CI/CD pipelines, ensuring that every release is battle-tested before it hits the mainnet
Go beyond "click-and-verify" by implementing fuzzing and property-based testing to detect edge cases in smart contract interactions
Own load and stress testing to ensure the Arbitrum stack thrives under transaction spikes
Partner with Software Engineers, Smart Contract Devs, and DevOps to build a "Quality First" culture, turning manual processes into automated, reproducible workflows
Collaborate with researchers and external auditors to automate vulnerability detection and regression testing
Work closely with DevRel to ensure SDKs, APIs, and documentation are well-tested and reliable for the growing Arbitrum developer ecosystem
What you'll need:
Strong experience using TypeScript to build robust, maintainable tooling
Deep automation skills with proficiency in Playwright or Cypress
Experience managing cloud environments (AWS/GCP) and a "DevOps mindset" when it comes to CI/CD
Proven ability to build QA processes from the ground up in a fast-paced, high-stakes environment
Self-starter who can drive process change and influence engineering teams to adopt best practices
Demonstrated interest in decentralised technologies and exposure to blockchain-based products
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)
