Senior Test Automation Engineer - C# / Java (527)

The role is for a Senior Test Automation Engineer with expertise in C# or Java, focusing on building automated tests for a new product suite in a collaborative, modern development environment.

Location: Remote (Brazil)

Responsibilities

• Write and maintain automated unit and integration tests across frontend and backend systems.
• Build and maintain end-to-end test suites using Playwright or similar frameworks.
• Review existing codebases to improve test coverage and identify risk areas.
• Use AI-powered tools (Claude, Copilot, etc.) to accelerate test creation, refactoring, and maintenance.
• Debug test failures across application, infrastructure, and data layers.
• Reduce flaky tests and improve signal-to-noise in CI pipelines.
• Partner with product engineers to improve testability and confidence in production systems.
• Help define patterns, tooling, and best practices that can scale across multiple products.

Requirements

• Strong programming skills in C#, TypeScript, JavaScript, or Java.
• Comfortable working in large, existing codebases and learning unfamiliar systems.
• Solid understanding of software testing fundamentals: unit vs. integration, isolation, mocking, and boundaries.
• Hands-on experience writing and maintaining unit and integration tests as code.
• Familiarity with frameworks such as xUnit, JUnit, Jest, Playwright, or similar.
• Ability to troubleshoot test failures across multiple layers of the stack.
• Strong debugging and problem-solving skills.
• Committed to writing high-quality, maintainable test code.
• Comfortable working in a Shift Left development environment.
• Self-driven, collaborative, and able to communicate clearly in English.
• Excited to use AI tools like Claude as part of daily development.
• Willing to experiment with AI for test generation, refactoring, and coverage analysis.
• Basic understanding of LLMs, or strong interest in learning.

Benefits

• Full back-office support, from career guidance to HR and concierge services.
• Remote-first policy with a distributed team.
• Own MacBook provided.
• Access to growth opportunities through tech talks, chapter meetings, and remote happy hours.
• Free English lessons with a native speaker.
• Candidate Referral bonus program.
• Access to Florianópolis headquarters with weekly massages, snacks, drinks, and games.

Additional Information

• The role is not for feature development or manual QA.
• Collaborative environment working closely with PMs, QA, and designers.
• Engineers are fully responsible for testing and code quality.
• Encourages ownership, accountability, and continuous improvement.
• Culture emphasizes people first, challenge yourself, teamwork, high-quality service, and honesty.