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

BrazilRemoteFull-timemid

OtherSoftware Engineer In Test

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Quick Summary

Overview

This position is listed on behalf of a partner company, who manages all applications and next steps.

Technical Tools

OtherSoftware Engineer In Test

This is an engineering-focused QA automation role where you’ll build the infrastructure, frameworks, services, and tooling that make automated quality possible at scale.
You’ll develop production-grade software that enables engineering teams to create, execute, monitor, and trust automated tests.
The role combines backend and full-stack development with modern test automation, CI/CD, and developer tooling.
You’ll work closely with QA, product engineers, and technical leads to improve testability, reliability, and engineering velocity.
You’ll also help establish foundations for AI-assisted testing, enabling agents and tools to generate and execute reliable test specifications.
The environment values ownership, clean engineering practices, collaboration, and continuous improvement.
It’s an opportunity to shape a quality platform used across multiple product teams rather than focusing primarily on manual testing.

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

~2 min read

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.