Senior Software Engineer

About EarnIn

Position summary

What you'll do

• Design and implement Cash Out features and write high-quality, maintainable, well-tested code.
• Build reliable transactions across debit card networks, ACH, FedNow, and RTP, with idempotency, safe failure and return handling, reconciliation, and auditability.
• Use AI tools throughout design, development, testing, review, debugging, and incident response while remaining accountable for quality and safety.
• Work across services, APIs, and client experiences with design partners.
• Build REST/gRPC APIs and event-driven integrations, including Kafka and SNS/SQS, with idempotent consumers and clear contracts.
• Participate in on-call, respond to incidents, resolve issues, and conduct blameless postmortems.
• Develop monitoring, alerting, dashboards, and runbooks.
• Partner with product, design, data science, and analytics to shape work and evaluate opportunities and experiments.
• Mentor engineers through reviews and share effective AI workflows.

What we're looking for

• 4+ years of software engineering experience, primarily building and operating backend services.
• Computer science or related degree, or equivalent practical experience.
• Hands-on day-to-day experience with Cursor and Claude, including examples of using AI workflows and correcting incorrect AI output.
• Track record using AI to deliver backend and, when needed, full-stack work end to end.
• Product sense and customer-first mindset; able to demonstrate and measure customer outcomes.
• Ownership of production services, including on-call, incidents, and follow-through.
• Proficiency in at least one of Kotlin, Java, C#, Go, Python, or TypeScript, and ability to work in more than one.
• Hands-on SQL and NoSQL database and streaming/messaging technology experience.
• Microservices, CI/CD, and functional and integration testing experience.
• Strong written and verbal communication, action orientation, and adaptability.
• Payments, ledgers, money movement, client development, Kubernetes, AWS, Datadog, AI adoption, and regulated-environment experience are advantageous.

Benefits

• Benefits include healthcare, internet and cell phone reimbursement, a learning and development stipend, and potential travel to the Mountain View headquarters.