Offchain Labs · 6 hours ago
Senior Quality Engineer, Full Stack
United States
Full-time
Remote
Senior LevelOffchain Labs is a leader in blockchain scalability and security, transforming interactions with decentralized applications. The Senior Quality Engineer will be responsible for developing automated testing frameworks and ensuring the reliability and performance of the Arbitrum protocol, contributing to the security of a widely adopted Layer 2 solution.
Cyber SecurityCrypto & Web3SoftwareBlockchainNetwork SecuritySecuritySmart Contracts
Responsibilities
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
Qualification
Required
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
Benefits
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
Company
Offchain Labs
Offchain Labs develops a solution for scaling Ethereum smart contracts.
Founded in 2018
51-200 employees
H1B Sponsorship
Offchain Labs has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (1)
2024 (2)
2023 (2)
Funding
Current Stage
Growth StageTotal Funding
$123.7MKey Investors
Lightspeed Venture PartnersPantera Capital
2021-08-31Series B· $100M
2021-04-01Series A· $20M
2019-04-03Seed· $3.7M
Leadership Team
Ed Felten
Co-Founder and Chief Scientist
Harry Kalodner
CTO and Co-Founder
Recent News
Company data provided by crunchbase