Senior Engineer in Test - Applications at Alpaca Services LLC

São José da Laje, Alagoas, Brazil -

Full Time

Start Date

Immediate

Expiry Date

21 Apr, 26

Salary

0.0

Posted On

21 Jan, 26

Experience

5 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

JavaScript, TypeScript, React, Playwright, Jest, Vitest, API Testing, Contract Validation, CI/CD, Cloud Environments, Docker, Web Security, Accessibility Testing, Analytical Skills, Communication Skills, Collaboration

Industry

Financial Services

Description

Who We Are: Alpaca is a US-headquartered self-clearing broker-dealer and brokerage infrastructure for stocks, ETFs, options, crypto, fixed income, 24/5 trading, and more. Our recent Series C funding round brought our total investment to over $170 million, fueling our ambitious vision. Amongst our subsidiaries, Alpaca is a licensed financial services company, serving hundreds of financial institutions across 40 countries with our institutional-grade APIs. This includes broker-dealers, investment advisors, wealth managers, hedge funds, and crypto exchanges, totalling over 6 million brokerage accounts. Our global team is a diverse group of experienced engineers, traders, and brokerage professionals who are working to achieve our mission of opening financial services to everyone on the planet. We're deeply committed to open-source contributions and fostering a vibrant community, continuously enhancing our award-winning, developer-friendly API and the robust infrastructure behind it. Alpaca is proudly backed by top-tier global investors, including Portage Ventures, Spark Capital, Tribe Capital, Social Leverage, Horizons Ventures, Unbound, SBI Group, Derayah Financial, Elefund, and Y Combinator. Our Team Members: We're a dynamic team of 230+ globally distributed members who thrive working from our favorite places around the world, with teammates spanning the USA, Canada, Japan, Hungary, Nigeria, Brazil, the UK, and beyond! 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. Your Role: As a Senior Engineer in Test, you will be responsible for designing, developing, and executing comprehensive testing strategies for our React/TypeScript applications, along with supporting backend services where appropriate. You will work closely with software developers, product managers, and other stakeholders to identify testing requirements and build robust UI, integration, and end-to-end automated testing frameworks that ensure exceptional user experience and product quality. The ideal candidate will have a strong background in software development, a passion for quality, and deep expertise in testing modern web applications in a fast-paced, agile SaaS environment. You will serve as the subject matter expert for testing across the organization—enabling teams to upskill, adopt effective testing practices, and ramp up their automation efforts. Your leadership will help elevate our approach to frontend and full-stack quality, ensuring our products are both reliable and delightful to use. Key Responsibilities: Test Strategy and Planning Design, develop, and implement comprehensive test strategies for our React/TypeScript frontend applications and supporting services. Ensure strong coverage of functional and non-functional requirements in collaboration with Product Engineering teams. Define testing approaches for component, integration, and end-to-end user flows. 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. How We Take Care of You: Competitive Salary & Stock Options Health Benefits 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

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Responsibilities

As a Senior Engineer in Test, you will design, develop, and execute testing strategies for React/TypeScript applications and backend services. You will also mentor teams in effective testing practices and help elevate the quality of frontend and full-stack products.