Senior QA Engineer (React, React Native, Node.js, TypeScript)
Job Description
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We are not looking for another ordinary bug finder, we are looking for a new valuable member of our team who is way more than just a tester.
Our tech stack is built around React, React Native, Node.js, and TypeScript. We are focusing mostly on manual testing with the priority set on API, acceptance, and end-to-end testing.
We are working with well-established companies and sometimes startups in their early stages (MVPs), which makes the job full of diversity and exciting challenges while crafting cutting-edge solutions. Our clients and referrals are from the high-end American IT market.
You must be quality-oriented and willing to act! At this point, you donāt have to be the absolute best, but gathering knowledge should be your day-to-day focus.
Your future tasks:
- Participating in the design and implementation of modern business applications for external clients
- Manual testing, building test scenarios, test cases, user scenarios, and bug reporting
- Working closely with Developers, Scrum Master, Proxy Product Owner, and Product Designers to assure high quality
- Focusing on quality-oriented rather than defect-oriented testing
- Executing test cases with high precision and detail, diligently checking each step and documenting differences
About you - Tech skills & Experience:
- 6-12 months of experience as QA working with teams that develop software in an agile environment
- Experience in exploratory tests
- SQL basics, familiarity with relational databases
- Know the basics of Jira or other agile project management tools
- Basic knowledge about API
- Basic knowledge about dev-tools in browsers
- Curiosity about AI and interest in AI-driven solutions that enhance work efficiency
- Practical knowledge of using AI in projects
About you - Soft Skills:
- Good command of English (min. B2), excellent command of Polish (min. C1) is required
- Knowledge hungry - with eagerness to learn and taking on challenges
- Detail-oriented and quality-centered approach to software development
- Familiarity with Scrum and Agile methodologies
- Problem-solving way of thinking
- Solid communication skills and not being afraid to challenge the status quo
- Open-minded to new ideas and perspectives
- Being aware of your strengths and areas for improvements
- Actively seeking solutions and trying to figure things out on your own, but not being afraid to ask for help when needed
Nice to have:
- ISEB/ISTQB certificate
- Ability to spot UI/UX imperfections or flaws
- Experience in cooperation with the client
Recruitment Process:
- CV Review
- Phone call with our Recruiter (15 min)
- Soft-skills interview with our Recruiter (45 min)
- Technical interview with our Specialists (1.15 hours)
- Decision and feedback
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MasterBorn
View Company ProfileMasterBorn (operating at masterborn.com) is a custom software development firm engineered for businesses seeking tailored, high-performance digital solutions. While many companies rely on generic off-the-shelf tools, MasterBorn specializes in building AI-powered products from the ground up, ensuring alignment with unique business needs. Under the hood, their approach combines expert product ownership with deep technical execution, leveraging a multidisciplinary team of founders, engineers, and designers to deliver scalable software efficiently. This allows enterprises to accelerate innovation, reduce time-to-market, and achieve operational excellence without compromising on quality or flexibility. Recognized as an Inc. 5000 company, MasterBorn has carved a niche by serving over 80 global clients with bootstrapped growth, achieving an $8.2M annual recurring revenue (ARR) without external funding.
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