QA Engineer - Zaps

• 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

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

• 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

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

• 5+ years in QA, ideally focused on backend, API, or integration testing
• Deep crypto-native understanding, including:Ability to read DeFi protocol docsComfort interpreting Solidity contractsFamiliarity with on-chain transaction flows and protocol mechanics
• 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

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!

• Embracing the differencesEmbrace your own differencesRespect and welcome the unique qualities of othersSee others’ differences as an opportunity to grow
• Embrace your own differences
• Respect and welcome the unique qualities of others
• See others’ differences as an opportunity to grow
• Own it, do itOwn tasks end-to-endHold yourself to a high bar for executionMake bold decisions, and be accountableUnderstand your limitations and seek for help
• Own tasks end-to-end
• Hold yourself to a high bar for execution
• Make bold decisions, and be accountable
• Understand your limitations and seek for help
• Fail forwardTry - don’t be afraid to failLearn - don’t make the same mistake twiceAdapt - grow with the experience
• Try - don’t be afraid to fail
• Learn - don’t make the same mistake twice
• Adapt - grow with the experience
• Have fun togetherTake the time to get to know and understand each other betterDon’t take yourself too seriously and keep it light-heartedFun should be coming from a place of love and respect
• 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

Embracing the differences

Embrace your own differences

Respect and welcome the unique qualities of others

See others’ differences as an opportunity to grow

Own it, do it

Own tasks end-to-end

Hold yourself to a high bar for execution

Make bold decisions, and be accountable

Understand your limitations and seek for help

Fail forward

Try - don’t be afraid to fail

Learn - don’t make the same mistake twice

Adapt - grow with the experience

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

• 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!)
• 30 days of PTO
• 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.

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!)

30 days of PTO

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.

Setting yourself up for success starts with the application! Click here to discover valuable tips that will help you navigate our application process effectively.

LI.FI is an equal opportunity employer. We encourage individuals of all backgrounds to apply. Join us in our dedication to fostering a workplace that values and respects each team member's unique contributions.

Shortlisted candidates will undergo a comprehensive interview process, including a people operations interview, a take-home assignment, a meet-the-team & founder interview, and a reference check.

For more information, visit our page detailing our hiring process!

Compensation Range: €60K - €90K