[Job-31549] 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).