Staff Software Engineer (QAE)
EarnInAbout the role
About EarnIn
As one of the first pioneers of earned wage access, our passion at EarnIn is building products that deliver real-time financial flexibility for those with the unique needs of living paycheck to paycheck. Our community members access their earnings as they earn them, with options to spend, save, and grow their money without mandatory fees, interest rates, or credit checks.
We’re fortunate to have an incredibly experienced leadership team, combined with world-class funding partners like A16Z, Matrix Partners, DST, Ribbit Capital, and a very healthy core business with a tremendous runway. We’re growing fast and are excited to continue bringing world-class talent onboard to help shape the next chapter of our growth journey.
WHAT YOU’LL DO
- Design, build, and maintain backend services and RESTful APIs that expose testability as a platform capability (e.g., test hooks, state seeding/reset, fault injection, synthetic data generation, environment control)
- Architect and implement “backdoor” testing interfaces and controlled test-only entry points that allow engineering and automation teams to safely manipulate system state, simulate edge cases, and validate behavior without compromising production integrity or security
- Evangelize testability and quality engineering practices across cross-functional teams (product, backend, mobile, data science, design) — influencing how services are designed from day one to be observable, controllable, and verifiable
- Partner with development teams to understand product and system architecture, identifying testability gaps in microservices (REST and gRPC) and proposing platform-level solutions
- Build and own internal tooling, SDKs, and libraries that make it easy for any engineering team to adopt testability best practices with minimal friction
- Define and track quality and testability metrics/SLAs across services; drive adoption through data, not mandate
- Collaborate with and mentor engineers across teams, providing technical guidance on test architecture, service design, and quality engineering patterns
- Work closely with security and platform teams to ensure testability features (backdoors, hooks, overrides) are safely scoped, access-controlled, and cannot be exploited in production
- Champion AI-native/AI-first approaches to testability and quality — using AI/LLM-based tooling to auto-generate test cases, synthetic data, and edge-case scenarios, and to accelerate root-cause analysis of failures
- Build and integrate AI-powered agents into the testability platform (e.g., agents that can autonomously exercise APIs, detect regressions, or generate test coverage reports) to scale quality engineering beyond manual effort
- Evaluate and pilot emerging AI coding/testing tools, establishing patterns for how engineering teams org-wide should adopt AI-assisted development and testing responsibly
- 7+ years of software engineering experience building production backend services, with a strong track record of writing high-quality, well-tested, maintainable code
- Bachelor’s or Master’s degree in Computer Science, Computer Engineering, or a related technical discipline, or equivalent industry experience
- Demonstrated experience designing and building testability infrastructure, internal de
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