Senior QA Engineer
RemoteSeniorEMEACryptocurrencyQA EngineerSenior Software EngineerSolidityDocumentationRustTypeScriptGit
Upload My Resume
Drop here or click to browse · PDF, DOCX, TXT
Requirements
- TypeScript – for protocol integration plugins
- Rust – powering the compiler service that converts TypeScript into instructions
- Solidity – smart contracts deployed across EVM networks
- DragonflyDB / Redis – caching and state layer
- What makes you a good candidate
- 5+ years in QA, ideally focused on backend, API, or integration testing
- Deep crypto-native understanding, including:
- Ability to read DeFi protocol docs
- Comfort interpreting Solidity contracts
- Familiarity with on-chain transaction flows and protocol mechanics
- Experience with Git, GitHub (Actions), TypeScript, Playwright, and Postman
- Strong communication skills and the ability to work cross-functionally
- Self-driven, detail-oriented, and able to work independently or collaboratively
- Ability to understand development changes quickly and ensure compatibility across features
- Bonus: experience with JIRA and QA automation tooling
- A passion for DeFi and eagerness to continuously grow technically
- We encourage you to apply if you feel your experience and skills equip you for this job but are not listed here!
- Company culture
- Embracing the differences
- Embrace your own differences
- Respect and welcome the unique qualities of others
- See others’ differences as an opportunity to grow
- Have fun together
- Take the time to get to know and understand each other better
- Don’t take yourself too seriously and keep it light-hearted
- Fun should be coming from a place of love and respect
- What you’ll get
- Annual team offsites (Thailand in 2023 and Vietnam in 2024 were a blast, Marrakech in March 2025 was blast-ier; let’s see what happens in 2026!)
- Flexible remote days
- Flexible working hours
- Equity participation from day 1
- Entitlement to work computer (choice of equipment)
- An annual 1,000€ personal development budget once you have worked 6+ months (pro-rated the first year)
- A one-time 1,000€ remote budget to use on coworking, office setup, etc.
- If you join us as an independent contractor, you’re only entitled to the first five benefits of this list.
- Application process
- Setting yourself up for success starts with the application! Click here to discover valuable tips that will help you navigate our application process effectively.
Responsibilities
- We are looking for a crypto-native Quality Assurance Engineer to take full ownership of testing and validating our Zaps product—our B2B new product suite that allows developers to interact with any smart contract on chain. You’ll manage, track, and resolve known bugs, collaborating closely with our existing QA team and the development team to address quality concerns before they reach our users. Your attention to detail and proactive problem-solving will be vital to the continued success of our platform.
- Please note: This role requires you to be located in EMEA. Your application will not be considered otherwise.
- Review and interpret DeFi protocol documentation and Solidity contracts to understand expected on-chain behavior
- Validate the correctness of Zap VM executions by ensuring that both the inputs and outputs match the expected behavior of the underlying DeFi protocol’s smart contracts
- Design and implement robust testing strategies for backend services, REST APIs, and protocol integrations
- Collaborate with the QA team to uphold and evolve our testing standards across plugin development and compiler workflows
- Ensure newly added features and protocol integrations meet strict quality and correctness criteria
- Track, manage, and drive resolution for bugs—especially those related to protocol behavior, integration logic, and output discrepancies
- Identify UX or product issues, communicate them clearly, and propose improvements
- Work closely with the development team to ensure high-quality releases and consistent QA processes
- Maintain clear and comprehensive test documentation, plans, and reports
- Our tech stack:
- TypeScript – for protocol integration plugins
- Rust – powering the compiler service that converts TypeScript into instructions
- Solidity – smart contracts deployed across EVM networks
- DragonflyDB / Redis – caching and state layer
- What makes you a good candidate
- 5+ years in QA, ideally focused on backend, API, or integration testing
- Deep crypto-native understanding, including:
- Ability to read DeFi protocol docs
- Comfort interpreting Solidity contracts
- Familiarity with on-chain transaction flows and protocol mechanics
- Experience with Git, GitHub (Actions), TypeScript, Playwright, and Postman
- Strong communication skills and the ability to work cross-functionally
- Self-driven, detail-oriented, and able to work independently or collaboratively
- Ability to understand development changes quickly and ensure compatibility across features
- Bonus: experience with JIRA and QA automation tooling
- A passion for DeFi and eagerness to continuously grow technically
- We encourage you to apply if you feel your experience and skills equip you for this job but are not listed here!
- Company culture
- Embracing the differences
- Embrace your own differences
- Respect and welcome the unique qualities of others
- See others’ differences as an opportunity to grow
- Hold yourself to a high bar for execution
- Make bold decisions, and be accountable
- Understand your limitations and seek for help
- Try - don’t be afraid to fail
- Learn - don’t make the same mistake twice
- Our tech stack:
- Company culture
Benefits
- €60K – €90K • Offers Equity
- Autofill from resume
- Upload your resume here to autofill key application fields.
- Drop your resume here!
- Parsing your resume. Autofilling key fields...
- This job has application limits
- Please Note: To help candidates focus on the most relevant opportunities for their skills and experience, we’ve set some limits on the number of applications. These guidelines apply to all roles at LI.FI:
- You can apply up to 3 times in any 60-day period across all jobs.
- If you’ve applied for a role and were not presented with an offer, you can re-apply after 30 days. For the same role, the re-application limit is 60 days.
- We appreciate your understanding and look forward to seeing your application for the best-fit roles!
Similar Jobs
Yesterday
Yesterday
Yesterday