Senior Qa Automation Engineer (Gateway)

Join COLIBRIX ONE - Innovating the Future of PaymentsAtCOLIBRIX 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 Electronic Money Institution (FCA Reference No. *****) and holder of a Financial Institution Licence issued by the MFSA, as well as a principal member of both VISA and Mastercard, we provide comprehensive, real-world financial solutions that include:Global card processingDigital wallet infrastructureCross-border merchant accountsAlternative payment methods (APMs)Corporate accounts for legal entitiesWe'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 roleThe Senior QA Automation Engineer will be responsible for testing a high-load payment gateway that handles real transactions. The role involves working with both sandbox and production environments, creating and managing test requests independently, and overseeing the gateway project lifecycle. The engineer will develop automated API and Web tests, debug issues using logs and HTTP traffic, and write clear bug reports while understanding related artifacts. The position also includes testing protocol-level audit requests for PCI DSS compliance and ensuring the reliability, performance, and quality of a system processing a large volume of payments. Close collaboration with developers, the team, and external payment partners is essential.Key responsibilities:Design and implement testing strategies for payment gateways and related servicesDevelop and maintain automated tests (API and Web)Test REST APIs and integrations, including transaction statuses, refunds, chargebacks, webhooks/callbacks, and 3DS flowsCollaborate and communicate with external payment providers and partners on integrations, issue investigation, and quality topicsContribute to CI/CD pipelines for automated testing, including reporting and flaky test controlAnalyze logs, HTTP traffic, and test results to identify defects and root causesProduce high-quality test documentation (test plans, strategies, checklists, test cases)Collaborate closely with developers, business analysts, and other stakeholdersParticipate in performance testing and quality assurance of high-load systemsRequirements:Must have6+ years of experience in QA, including at least 2 years in test automation (end-to-end)Hands-on experience in fintech / payments domainStrong understanding of payment flows: transaction statuses, refunds, chargebacks, webhooks/callbacks, and 3DSStrong REST API and integration testing skills (idempotency, retries, timeouts, signatures)Experience in critical Web automation (Playwright / Cypress / Selenium with Pytest or equivalent frameworks)Experience with CI/CD pipelines (GitLab CI, Jenkins, GitHub Actions), test reporting, and flaky test managementStrong debugging skills using logs and HTTP trafficPractical Git skills for merging requests and resolving conflictsBasic SQL skillsAbility to write clear, high-quality bug reportsBackground in high-load or mission-critical payment systemsStrong communication skills and ability to collaborate effectively across teamsFluent Russian and a good working proficiency in EnglishNice to haveKnowledge of PCI DSS standards and regulatory requirements related to payment systems, gateways, APIs, and protocolsExperience in the crypto domain or crypto payment productsHands-on experience with performance testingWhat We Offer:Opportunity to shape the future of fintech solutions within a growing companyCollaborative, horizontal team structure that values your expertise and ideasContinuous learning and development opportunities to enhance your skills and career growthCompetitive salary and benefits packageFlexible 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.

Must have 6+ years of experience in QA, including at least 2 years in test automation (end-to-end) Hands-on experience in fintech / payments domain Strong understanding of payment flows: transaction statuses, refunds, chargebacks, webhooks/callbacks, and 3DS Strong REST API and integration testing skills (idempotency, retries, timeouts, signatures) Experience in critical Web automation (Playwright / Cypress / Selenium with Pytest or equivalent frameworks) Experience with CI/CD pipelines (GitLab CI, Jenkins, GitHub Actions), test reporting, and flaky test management Strong debugging skills using logs and HTTP traffic Practical Git skills for merging requests and resolving conflicts Basic SQL skills Ability to write clear, high-quality bug reports Background in high-load or mission-critical payment systems Strong communication skills and ability to collaborate effectively across teams Fluent Russian and a good working proficiency in English Nice to have Knowledge of PCI DSS standards and regulatory requirements related to payment systems, gateways, APIs, and protocols Experience in the crypto domain or crypto payment products Hands-on experience with performance testing

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.

Laza, Orense, España 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 Electronic Money Institution (FCA Reference No. ******) and holder of a Financial Institution Licence issued by the MFSA, as well as a principal member of both VISA and Mastercard, we provide comprehensive, 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.