Mid/Senior QA Engineer - Jumper
About This Role
This role offers the chance to define the quality strategy for Jumper, a leading crypto exchange powered by LI.FI. You'll be instrumental in shaping testing, automation, and reliability for a product with over 150k active users, as we spin off into an independent entity.
What You'll Be Doing
Take ownership of QA planning and execution across Jumper.Exchange's core features, from UI to API and cross-chain integrations.
Build, maintain, and scale automated testing frameworks using Playwright, Jest, and related tools.
Collaborate closely with engineering, product, and security to review requirements, test new releases, and improve processes.
Investigate, reproduce, and resolve production issues, driving lasting fixes.
Monitor quality metrics and contribute to continuous improvement initiatives.
Champion a "quality-first" mindset within the team, balancing speed with stability.
What We're Looking For
3+ years of experience in QA or software testing, preferably in a fast-moving product company.
Strong hands-on experience with Playwright and Jest for automated and integration testing.
Solid foundation in API testing, CI/CD pipelines, and end-to-end quality practices.
Experience or curiosity regarding blockchain, DeFi, or cross-chain technologies.
Excellent communication and collaboration skills for working with distributed teams.
Analytical, detail-oriented, and proactive in identifying and solving quality issues.
Fluent in English and located within the EMEA timezone.
Bonus Points
Familiarity with PostgreSQL and Redis for database and caching layer testing.
Understanding of Ethereum-based testing libraries (Viem, Wagmi).
Experience in QA for high-traffic or fintech/blockchain applications.
Why Join Us
Contribute to a product with a significant user base in the rapidly evolving DeFi space.
Work in a small, excellent, and agile team with a lot of autonomy.
Be a key player in shaping the quality strategy of an independent spin-off from LI.FI.
Make a tangible impact on a technically challenging and genuinely useful product.
About LI.FI
LI.FI is at the forefront of the Web3 interoperability revolution, building the essential infrastructure that enables seamless asset and data transfers across the entire blockchain ecosystem. Our robust SDK and API provide developers with the tools to integrate bridges and decentralized exchanges (DEXs) into their applications, abstracting away the complexity of cross-chain liquidity and communication. We empower the next generation of dApps and protocols by making the multi-chain future a reality, fostering a more connected and efficient decentralized world. We are a fully remote team with a strong presence across EMEA, cultivating a culture of innovation, autonomy, and continuous learning. At LI.FI, you'll work alongside passionate Web3 pioneers who are deeply committed to open-source principles and pushing the boundaries of blockchain technology. We value bold ideas, collaborative problem-solving, and a proactive approach to building game-changing solutions in a fast-paced environment. Our flat hierarchy encourages direct contribution, ensuring every team member has a significant impact on our shared mission. If you're eager to contribute to the fundamental layers of Web3, solve complex technical challenges, and shape the future of decentralized finance and cross-chain interaction, LI.FI offers an unparalleled opportunity. Join us to be part of a dynamic team building critical infrastructure that underpins the entire crypto landscape, and help us empower developers worldwide to create truly interoperable applications.
Ready to Apply?
To submit your application for this position, please visit LI.FI's official website and follow their application process.