QA Engineer

Colibrix One

Belgrade, Vojvodina, Serbia Hybrid permanent

Posted: March 31, 2026

Required Skills

Job Description

Join COLIBRIX ONE - Innovating the Future of Payments

At COLIBRIX ONE*, we’re building advanced, AI-powered payment technologies that support Payment Service Providers (PSPs), Electronic Money Institutions (EMIs), and neobanks across the EU and the UK. As a fully licensed EMI (FCA reference number 927920) and a Principal Member of Mastercard, we offer real-world financial solutions that include:

• Global card processing
• Digital wallet infrastructure
• Cross-border merchant accounts
• Alternative payment methods (APMs)
• Corporate accounts for legal entities

We’re a fast-growing team with a passion for innovation, security, and scalability. Our culture values curiosity, collaboration, and impact - and we’re looking for talented professionals who are ready to shape the future of fintech.

At COLIBRIX ONE, your work directly powers the digital economy. If you're eager to solve meaningful challenges and build with purpose, we’d love to hear from you.

About the role:

We're looking for a Middle+ QA Engineer (Manual + Automation) to join the team in a shared capacity across three fintech products. The role is hands-on: release verification, automation support, audit-related testing - wherever the current priority sits.

Key responsibilities:

• Writing and maintaining automated tests (UI and API level)
• API testing as part of integration and regression coverage
• Manual testing across active releases: feature acceptance, smoke, regression
• Creating and maintaining test cases and suites in TMS for financial flows
• Triaging automation failures during release cycles
• Supporting audit-related testing activities as needed
• Strong communication skills and ability to collaborate effectively across teams
• Picking up urgent business tickets when delivery priorities require it

Requirements:

• 3+ years in QA, with fintech experience - payments, banking, e-money, crypto or iGaming
• Hands-on experience automation with Python and Playwright
• Experience with API testing
• Jira + TestRail/ Zephyr/ QASE as part of your daily workflow
• Fluent Russian and a good working proficiency in English

Nice to have:

• Experience with SEPA, IBAN, card processing (Visa/Mastercard schemes)
• Familiarity with crypto-to-fiat flows
• Familiarity with PCI DSS

What We Offer:

• Opportunity to shape the future of fintech solutions within a growing company
• Collaborative, horizontal team structure that values your expertise and ideas
• Continuous learning and development opportunities to enhance your skills and career growth
• Competitive salary and benefits package
• Flexible work arrangements to support work-life balance

* Please note that this position is offered within the COLIBRIX ONE. Employment will be under the appropriate legal entity based on the role and location.

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