[Job-31548] Senior QA Engineer

At CI&T, we help large enterprises transform the potential of AI into real business impact with AI Deployment, AI-native execution, and tech-integrated business solutions. With 30 years of experience in technological transformation, we accelerate innovation with expertise in Agentic SDLC, Application modernization, Data & AI, Martech and Business strategy. We are 8,000 CI&Ters across more than 25 countries, collaborating to build solutions with real impact. AI is already part of how we work, evolve, and innovate every day. Responsibilities: • Design and execute test plans and test cases for a new integration/middleware layer connecting a partner portal to internal systems. • Perform API-level functional, integration, and regression testing. • Validate synchronous and asynchronous (event-driven) flows, including error handling and retry/dead-letter scenarios. • Collaborate with the Business Analyst to translate documented business flows into test scenarios. • Log, track, and verify defect resolution across environments (Development → QA → UAT → Production). • Support automation of API test suites where applicable. • Validate security and access-control behavior (authentication, authorization, data segregation). Requirements: • 5+ years of QA experience, with a focus on API/backend testing and independent ownership of test strategy. • Experience testing REST APIs (Postman or equivalent tooling). • Experience writing and maintaining structured test cases and test plans. • Familiarity with CI/CD pipelines and testing within a GitLab CI (or equivalent) workflow. • Experience in mortgage, lending, or financial services. • Good English communication skills (B2+) — daily collaboration with a US-based team. Nice to Have: • Experience with automated API test frameworks. • Experience testing event-driven or asynchronous systems (message queues, notifications). • Familiarity with security testing practices (OWASP-related checks). Our benefits include: - Premium Healthcare - Meal voucher - Maternity and Parental leaves - Mobile services subsidy - Sick pay-Life insurance - CI&T University - Colombian Holidays - Paid Vacations And many others. Collaboration is our superpower, diversity unites us, and excellence is our standard. We value diverse identities and life experiences, fostering a diverse, inclusive, and safe work environment. We encourage applications from diverse and underrepresented groups to our job positions.