Software Engineer in Test (SDET) (Ingeniero de Software en Pruebas)

Accountabilities: Design, develop, and maintain shared automation frameworks and libraries for web and API testing, with a preference for Playwright and modular, maintainable architectures. Build backend APIs, internal services, and full-stack tools that support test case management, execution, reporting, and result persistence. Develop and maintain integrations with delivery and collaboration tools such as GitHub Actions, Slack, Linear, and related APIs or webhooks. Build and improve CI/CD pipelines for smoke and regression test suites, reducing test flakiness and making failures easier to diagnose and resolve. Treat test automation as a first-class software product by applying code reviews, automated testing, version control, documentation, refactoring, and strong engineering standards. Enable AI-assisted QA workflows by creating reliable frameworks and technical contracts that allow agents or CLI tools to generate test specifications, execute tests, and capture evidence. Partner with QA engineers to drive adoption of automation frameworks and with product engineers to improve application testability through APIs, selectors, test data, and appropriate environments. Investigate flaky tests, environment problems, integration failures, and other quality issues systematically, identifying and addressing their underlying causes. Contribute to the evolution of internal QA tooling and platform capabilities, moving solutions from early prototypes into reliable, scalable engineering systems. Requirements 4+ years of professional software development experience in backend, full-stack, or closely related engineering roles, with demonstrated experience delivering automation or developer tooling. Strong proficiency in TypeScript/JavaScript and experience with Playwright or comparable end-to-end automation frameworks. Practical experience designing, building, and maintaining automated web and API testing frameworks, with a solid understanding of the test pyramid and when to prioritize API, integration, or UI coverage. Strong backend fundamentals, including REST APIs, relational databases, authentication concepts, service boundaries, and maintainable software architecture. Experience with CI/CD platforms such as GitHub Actions, Git-based development workflows, and Docker. Familiarity with React, Next.js, or comparable frontend technologies for developing internal dashboards, test-management interfaces, and engineering tools. Ability and willingness to work with Java/Spring Boot when backend services or integrations require it. Strong debugging and analytical skills, particularly when diagnosing flaky tests, environment issues, integration failures, and unreliable automation. Builder mindset with a track record of creating frameworks and tools that other engineers can successfully adopt. Strong communication and documentation skills, with the ability to collaborate effectively with QA and product engineering teams. Comfortable working with ambiguity and evolving solutions from functional prototypes into robust, maintainable platform capabilities. Good written and spoken English; Spanish is a plus. Prior experience as an SDET, Software Engineer in Test, Test Infrastructure Engineer, or similar role is advantageous. Nice-to-have experience includes mobile automation with Appium or BrowserStack, workflow orchestration, Linear/GitHub API integrations, AI or agent-based test tooling, AWS, observability, fintech/payments, or replacing external test-management platforms with internal solutions. Benefits Remote-first working model with flexibility across home, office, and customer environments. No fixed minimum number of office days for most roles, with flexibility based on team and business needs. Competitive salary and stock options from day one. Annual learning budget and accelerated professional development opportunities. A high-talent-density environment with strong ownership and low-ego collaboration. English as the working language, with Spanish and Portuguese also used across the wider team. A culture built around clarity, simplicity, ownership, high standards, continuous change, and inclusivity. Opportunity to work on engineering systems that directly improve software quality, developer productivity, and automation at scale. Exposure to modern technologies including Playwright, TypeScript, React/Next.js, Java/Spring Boot, CI/CD, cloud infrastructure, and AI-assisted QA.