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Alpaca • São José da Laje, Alagoas, Brazil
Role: Senior Engineer in Test (SDET/Frontend QA Specialist)
Frontend: React + TypeScript
Testing: Playwright (required), Jest/Vitest, React Testing Library
API/Contracts: REST/gRPC, OpenAPI/Protobuf contract testing
CI/CD: GitHub Actions, GitLab CI
Environments: Cloud (GCP/AWS), Docker familiarity
Others: API mocking, end-to-end test automation, cross-browser testing, accessibility basics (axe-core a plus)
Design and implement comprehensive test strategies for React/TypeScript frontend and supporting services; ensure functional and non-functional coverage
Build, maintain, and scale frontend automation frameworks; integrate tests into CI for fast feedback
Develop robust E2E, integration, and UI tests; collaborate with backend teams on API/contract tests; mentor teams on testing practices
5+ years in SDET/Frontend QA or equivalent with strong automation background
Fluency in JavaScript/TypeScript and modern React testing
Hands-on with Playwright; experience with Jest/Vitest; UI testing strategy design
API testing and contract validation (REST/gRPC; OpenAPI/Protobuf)
CI/CD in real-world SaaS (GitHub Actions, GitLab CI); cloud familiarity (GCP/AWS); Docker basics
Cross-browser/device testing, data setup, API mocking, and end-to-end flows
Strong analytical, communication, and mentoring abilities
Accessibility testing tools (axe-core)
Security basics (auth: JWT/OAuth)
We're searching for passionate individuals eager to contribute to Alpaca's rapid growth. If you align with our core values—Stay Curious, Have Empathy, and Be Accountable—and are ready to make a significant impact, we encourage you to apply.
Frontend Automation Framework Development Build, maintain, and evolve our automated testing frameworks using tools such as Playwright, React Testing Library, and Jest/Vitest. Establish patterns, utilities, fixtures, and best practices that scale across multiple teams and applications. Integrate automated testing into CI pipelines to ensure fast, reliable feedback loops.
E2E, Integration, and UI Testing Develop robust automated E2E test suites for core user journeys, error paths, authentication flows, and complex UIs. Improve reliability, consistency, and speed of UI tests by refining mocking strategies, API stubbing, and data setup. Ensure cross-browser and cross-device test coverage when relevant.
API & Contract Testing Implement and maintain API integration tests used by frontend applications. Collaborate with backend engineers to create and maintain contract tests for REST/gRPC when necessary. Validate frontend–backend interactions with a focus on user-facing behaviour rather than backend internals.
Tooling and Infrastructure for Quality Evaluate and implement new testing tools and technologies that improve developer experience and quality. Enhance CI build pipelines for frontend test execution, parallelization, and reporting. Optimize test reliability, flakiness detection, and runtime performance.
Collaboration & Quality Enablement Work closely with frontend and full-stack engineers to embed testing best practices into the development lifecycle. Participate in design reviews, grooming sessions, and architecture discussions to ensure quality considerations are addressed early. Advocate for a strong quality engineering culture across the organization. Mentorship & Developer Enablement Mentor engineers in writing effective unit, integration, and E2E tests for React/TypeScript applications. Provide sample tests, pair-programming sessions, documentation, and workshops to help teams adopt the testing frameworks. Champion a mindset of continuous improvement.
Required Skills and Qualifications Technical Skills Strong proficiency in JavaScript/TypeScript and familiarity with modern React development. Hands-on experience with frontend testing tools such as Playwright (required), Jest or Vitest Experience designing UI testing strategies for frontend architectures, including routing, state management, API mocking, and asynchronous flows. Experience with REST/gRPC API testing and contract validation (OpenAPI/Protobuf). Strong understanding of CI/CD workflows (GitHub Actions, GitLab CI, etc.). Familiarity with modern cloud environments (GCP, AWS, etc.) in the context of leveraging dev/test environments. Understanding of containerized development workflows (Docker), not as a primary responsibility but as a useful skill. Knowledge of web security basics including authentication (JWT/OAuth) and negative testing patterns. Familiarity with accessibility testing tools (e.g., axe-core) is a plus.
Soft Skills Excellent analytical and problem-solving abilities with a strong attention to detail. Strong communication skills, with the ability to explain testing concepts clearly to both technical and non-technical audiences. Collaborative mindset with experience working in agile, cross-functional teams. Demonstrated leadership in testing practices and the ability to mentor team members effectively. Adaptability and comfort in fast-paced SaaS product environments.
Experience 5+ years as an SDET, Frontend QA Engineer, or Quality Engineer with significant automation experience. Proven track record of testing and delivering high-quality web applications (preferably React/TypeScript) and SaaS products. Demonstrated experience designing and building automated test frameworks from the ground up Bachelor’s degree in Computer Science, Engineering, or related field, or equivalent practical experience.
New Hire Home-Office Setup: One-time USD $500
Monthly Stipend: USD $150 per month via a Brex Card Alpaca is proud to be an equal opportunity workplace dedicated to pursuing and hiring a diverse workforce. Recruitment Privacy Policy