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. At CI&T, we are seeking a highly skilled and motivated Quality Analyst Senior to join our team in Brasil. You will contribute to an innovative project in a collaborative, innovative, transforming, and multicultural environment. ### Position Overview: As a Quality Analyst Senior, you will play a critical role in ensuring the quality and performance of our software solutions. You will lead the design and implementation of comprehensive testing strategies, focusing on automated end-to-end flows and REST APIs. Collaborating with cross-functional teams, you will ensure our products not only meet but exceed client expectations. ### Key Responsibilities: What you'll do - Translate product stories and acceptance criteria into layered test strategies, including unit, API-contract, integration, E2E, and exploratory testing. - Design, execute, and maintain automated E2E flows for a modern React/Vite web app using Playwright (TypeScript). - Cover REST APIs (Python/FastAPI backends) with contract tests and behavior tests using pytest and HTTP clients (Postman/Bruno, httpx). - Verify constraint-based and optimization behavior through scenario-based tests, ensuring rigorous testing of feasibility and resource-fit rules. - Validate multi-tenant isolation, RBAC, and OIDC/OAuth2 flows to ensure tenant data integrity and security. - Build and maintain a lightweight exploratory/session-based practice to catch edge cases that scripted tests may miss. - Run root cause analysis on production/staging defects, driving fixes with clear reproducibility notes and evidence. ### Required Skills and Qualifications: Must-have Skills: - Strong grasp of the testing pyramid and hands-on experience with functional and non-functional testing. - Expertise in test automation for modern web apps (Playwright preferred or Cypress). - Proficiency in REST API testing with contract-first tooling, able to design tests from an OpenAPI spec. - Strong SQL/PostgreSQL skills for writing non-trivial queries and validating data. - Comfort with modern issue trackers, GitHub, and CI/CD workflows. - Advanced English proficiency. You'll stand out if you have: - Experience in testing constraint/optimization systems. - Proficiency in Python and pytest. - Familiarity with multi-tenant SaaS testing and accessibility testing to WCAG 2.1 AA. - Experience in performance/load testing and event-driven/async workflow testing. ### Join Us: At CI&T, we are driven by Collaboration, Innovation & Transformation. We leverage the power of AI to enhance our projects and foster an environment where your skills can thrive. If you're passionate about quality assurance and want to make a significant impact, we invite you to apply and be a part of our forward-thinking team. #LI-CI Our benefits: -Health and dental insurance -Meal and food allowance -Childcare assistance -Extended paternity leave -Partnership with gyms and health and wellness professionals via Wellhub (Gympass) TotalPass; -Profit Sharing and Results Participation (PLR); -Life insurance -Continuous learning platform (CI&T University); -Discount club -Free online platform dedicated to physical, mental, and overall well-being -Pregnancy and responsible parenting course -Partnerships with online learning platforms -Language learning platform And many more! More details about our benefits here: https://ciandt.com/br/pt-br/carreiras At CI&T, inclusion starts at the first contact. If you are a person with a disability, it is important to present your assessment during the selection process. See which data needs to be included in the report by [clicking here](https://docs.google.com/presentation/d/12BqYLIGeEyp9t0ZdF2b4bvnjFLza4E8fmbcowWeBlfk/edit?slide=id.g3a9cf52bf2b_0_0#slide=id.g3a9cf52bf2b_0_0)[.](https://docs.google.com/presentation/d/12BqYLIGeEyp9t0ZdF2b4bvnjFLza4E8fmbcowWeBlfk/edit?slide=id.g3a9cf52bf2b_0_0#slide=id.g3a9cf52bf2b_0_0)This way, we can ensure the support and accommodations that you deserve. If you do not yet have the assessment, don't worry: we can support you in obtaining it. We have a dedicated Health and Well-being team, inclusion specialists, and affinity groups who will be with you at every stage. Count on us to make this journey side by side.