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Senior Quality Engineer, Full Stack

OffchainlabsRemote1w ago

At Offchain Labs, we aren’t just building products: we’re leading a movement.

As pioneers in blockchain scalability and security, we're at the forefront of transforming how the world interacts with decentralized applications. We're laying the foundation that will define the next generation of digital commerce, governance, and human interaction. This involves tackling real-world challenges that come with scaling blockchain technology, without compromising on its core principles: decentralization, security and transparency.

At the center of this vision is our people. Our team is made up of thinkers and doers that embrace new challenges and seek solutions that push existing boundaries. If you’re energized by solving unprecedented problems, and believe in the role that decentralized systems will play in creating a more equitable digital future, then we want to hear from you.

Why Offchain Labs?

Offchain Labs is setting the pace for the entire Ethereum ecosystem. We built the Arbitrum stack that powers Arbitrum One, the most widely adopted Ethereum scaling solution that exists today.

Arbitrum’s ecosystem is undergoing tremendous growth with hundreds of projects and dApps on Arbitrum One today. Over 100 different teams have used Offchain Labs technology to build their own Arbitrum chains. Major players in the space, Robinhood, BlackRock, Ethena Labs, Securitize, Aave, and Apechain are all using the Arbitrum stack.

Arbitrum’s thriving ecosystem wouldn’t exist without our advanced technology stack. Arbitrum, Prysm, ZeroDev. These aren’t just product names. These are tools that are actively reshaping what's possible on Ethereum and advancing its core infrastructure.

To top it all off? We’re backed by $124 million in funding. We’ve demonstrated consistent execution with billions in secured value, thousands of supported projects, and infrastructure processing millions of transactions seamlessly.

The Role:

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 you’ll 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 Arbitrum’s 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)

401k retirement plan + company match (US only)

Wellness stipend

Home office set up / ergonomic equipment program

Attention Offchain Labs Job Seekers:

This role cannot be performed in California, or Colorado.

Please be advised that there has been a rise in fraudulent recruiter activities, particularly within the Web3 space. If you would like to confirm whether someone is an OCL employee or the legitimacy of an offer you received, please email jobs@offchainlabs.com

At Offchain Labs, we are committed to building a welcoming and supportive workplace for all employees, regardless of their background or identity. We strive to create an environment where everyone feels valued and has an equal opportunity to succeed and thrive. We encourage candidates from all walks of life to apply and join our team.

Senior Quality Engineer, Full Stack

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