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

This job has expired

Senior Quality Engineer, Full Stack

Anywhere in the world

Remote

Senior

Offchain Labs