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Middle Quality Assurance Engineer

WhiteTech • Poland

onsite
Posted Jun 19, 2026

**Role & seniority: ** Quality Assurance Specialist (3+ years experience; manual + semi-automated testing)

**Stack/tools: **

  • Testing: functional/UI/API/integration/exploratory; regression practices

  • API tools: Postman, Swagger

  • Debug/validation: Chrome DevTools, network analysis

  • Test management: TestRail, Xray (or similar)

  • Tech knowledge: REST APIs, auth/session handling, frontend–backend architecture

  • Data checks: SQL

  • Top 3 responsibilities:

    • Own QA execution within cross-functional teams (identify/report/track defects; improve coverage)

    • Build/maintain test strategies and structured reusable test cases (functional, UI, API, integration, exploratory)

    • Validate complex payment-related web/app behavior (pixel-perfect UI across devices/browsers; API flow coverage and payload validation)

  • Must-have skills:

    • 3+ years manual + semi-automated web testing

    • 2+ years hands-on API testing (auth flows, error handling, payload validation)

    • Payment/transactional flow testing experience

    • Responsive + cross-browser/device testing skills; strong visual/pixel-perfect mindset

    • Postman/Swagger + TestRail/Xray familiarity

    • SDLC/STLC + Agile (Scrum/Kanban) understanding

    • SQL basics for validation; ability to work autonomously with ownership

  • Nice-to-haves:

    • Experience with automation hooks for API testing

    • Prior work with third-party integration testing (beyond “basic”)

  • **Location

Full Description

As we scale to new heights, we're searching for a Quality Assurance Specialist to ensure our products meet the highest standards of quality and efficiency.

Your role and impact

  • As a Quality Assurance Specialist at WhiteTech you will play a crucial role in maintaining and enhancing the quality of our cutting-edge payment solutions. Your efforts in identifying, reporting, and tracking bugs, along with your active involvement in the entire software development lifecycle, will directly contribute to the reliability and performance of our products. You'll collaborate with a dynamic team to push the boundaries of what's possible in the fintech industry.

Your key responsibilities

  • Take full ownership of quality assurance within cross-functional product teams.
  • Design and maintain comprehensive test strategies covering functional, UI, API, integration, and exploratory testing.
  • Drive pixel-perfect validation of complex web interfaces across multiple devices, screen sizes, and browsers.
  • Ensure full test coverage for API flows using tools like Postman, Swagger, and automation hooks if needed.
  • Collaborate closely with developers, designers, and product managers to define quality expectations and shift testing left.
  • Write structured, reusable test cases and detailed bug reports that help the team move fast without sacrificing quality.
  • Review and improve test documentation, coverage, and regression practices across releases.
  • Contribute to the continuous improvement of QA processes, tools, and team workflows.

Requirements & skills

  • 3+ years of experience in manual and semi-automated testing of web-based applications.
  • 2+ years of hands-on experience with API testing, including auth flows, error handling, and payload validation
  • Proven experience testing payment systems, transactional flows, and basic third-party integrations.
  • Experience with responsive design testing, browser dev tools, network analysis, and cross-platform validation.
  • Knowledge of Postman, Chrome DevTools, Swagger, and test management systems (e.g. TestRail, Xray).
  • Understanding of frontend–backend architecture, including REST APIs, session handling, and data flows.
  • Working knowledge of SQL for data validation and backend consistency checks.
  • Solid understanding of SDLC, STLC, and Agile (Scrum/Kanban) development processes.
  • A strong "pixel-perfect" mindset and ability to quickly identify visual and behavioral UI issues.
  • Proactive, analytical, and able to work autonomously with a strong sense of ownership.
  • Ukrainian/russian language.

Our recruitment process typically follows these stages

  • Application screening

Interview Stages (2-3 weeks)

  • Prescreening call with Recruiter (45 min)
  • Test task
  • Technical Interview (60 min)
  • Soft Skills Interview (35 min)
  • Job Offer

Referrals: Employment and Background Check

Quality AssuranceAPI TestingWeb ApplicationsTest StrategiesBug ReportingCross-Functional CollaborationResponsive Design TestingSQLAgile DevelopmentPixel-Perfect ValidationPostmanSwaggerChrome DevToolsNetwork AnalysisTest Management SystemsFrontend-Backend Architecture

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