Senior QA Engineer (Back End)

About the role

Wirex, a digital currency provider, is looking for a Senior QA Engineer focused on back-end and API testing. The position is a B2B contract, fully remote (EU preferred, no sanctioned countries), and suits someone who enjoys improving software quality and the development process.

Key responsibilities

• Plan, prepare and maintain test cases and test documentation.
• Drive manual and automated API testing using Postman/Swagger and related tooling.
• Take part actively in the release process at all stages.
• Work with the development team: gather information, report issues and track their resolution.
• Collaborate with analysts and developers on feature requirement analysis.
• Optimize the length of the test cycle proactively.

Required profile

• 3+ years of hands-on back-end/API testing experience, with deep day-to-day work at the service layer.
• Proven track record in defect detection, documentation and tracking on the back end.
• Ability to prioritize tasks, manage workload and identify risks to quality or timelines.
• Good English for documentation; Ukrainian or Russian for internal communication.

Required skills

• Solid experience with API testing tools (Postman, Swagger) and testing methodologies.
• Hands-on automated testing in JavaScript and Go.
• Atlassian stack (Jira, Confluence) and GitHub.
• Nice to have: Web3, non-custodial wallets, smart contracts and blockchain basics.

What we offer

• Premium product tariffs and semi-remote work with flexible hours.
• Home office allowance and virtual share options after probation.
• Medical insurance after probation, 20 business days of vacation, paid sick, birthday and anniversary leave, and length-of-service holidays.
• Coworking and parking compensation in Wrocław/Kyiv.