Senior Software Engineer, Test Infrastructure

Responsibilities

• Design, build, and maintain robust tooling and testing infrastructure to support engineering workflows across frontend and backend systems.
• Create comprehensive automation frameworks for unit, integration, and end-to-end testing, leveraging tools like Jest, Playwright, Vitest, and Cypress.
• Build intelligent CI/CD pipelines that run tests efficiently through advanced techniques like file-change tracking, smart test selection, and parallelization strategies.
• Develop sophisticated utilities for mocking APIs, stubbing external services, and spinning up isolated testing environments that mirror production conditions.
• Monitor test reliability and performance metrics to continuously drive improvements in feedback speed and signal quality across all engineering teams.
• Collaborate closely with engineers to ensure code is testable, traceable, and properly instrumented to build confidence in our deployments.
• Create comprehensive documentation and onboard teams to best practices in test architecture and optimized developer workflows.
• Drive key technical decisions for testing infrastructure that supports our critical trading systems and portfolio management platform.
• Establish testing standards and architectural patterns that enable rapid, confident product development across all our wealth management offerings.
• Partner with backend teams to build reusable test fixtures and data factories for complex financial workflows and regulatory scenarios.

Requirements

• 5+ years of software engineering experience with a focus on testing infrastructure, developer tooling, or platform engineering.
• Strong proficiency in TypeScript/JavaScript and modern testing frameworks (Jest, Vitest, Cypress, Playwright).
• Experience building and maintaining CI/CD pipelines (GitHub Actions, Jenkins, or similar).
• Experience with infrastructure as code (CDK, Datadog, Terraform, or similar).
• Solid understanding of test automation patterns, mocking strategies, and test environment management.
• AWS Infra & Deployment experience.
• Experience with containerization and orchestration for test environments.
• Knowledge of database testing strategies and test data management.
• Strong foundation in software engineering principles and system design.
• Experience with monitoring and observability tools for test infrastructure.
• Excellent problem-solving skills and ability to debug complex testing issues.
• Strong written communication skills and documentation practices.

Nice-to-Haves

• Experience with financial services or regulated industry testing requirements.
• Knowledge of property-based testing and fuzzing techniques.
• Experience with distributed testing and load testing frameworks.
• Familiarity with Scala or Python testing ecosystems.
• Background in building developer productivity tools.
• Experience with test reporting and analytics platforms.
• Knowledge of security testing and compliance validation.

Compensation and Benefits

• Everything you need to build the perfect dev station from hardware to software.
• Learn & grow through book clubs, seminars, and peer learning sessions.
• Full health benefits + 401(k) matching & Roth IRA options.
• Unlimited PTO.
• An amazing collaborative atmosphere between product, design, and engineering to solve hard problems together.