Senior Backend Engineer

The role

You will own features end-to-end from design to deployment. You will build backend services for Banking, Payments, and Cards products.

What you will do

• Own features end-to-end from product design and API contracts through implementation, testing, and deployment.
• Collaborate with product and design to define requirements and make tradeoffs.
• Build reliable backend services for Banking, Payments, and Cards products.
• Write APIs and backend logic focused on clarity, correctness, and developer experience.
• Contribute to architectural decisions and raise the engineering bar.

Required qualifications

• 5+ years of backend development experience
• Product mindset
• Comfort working across the full backend lifecycle: design, implementation, testing, deployment, and on-call ownership
• Experience building and maintaining reliable systems in cloud environments (AWS, GCP, or Azure)
• Solid understanding of distributed systems concepts: consistency, availability, failure modes, and observability
• Experience with CI/CD and modern deployment practices

Nice to have

• Fintech, payments, or developer-platform experience
• Production experience with Kubernetes
• Experience with Scala, ZIO, Cats, or functional programming
• Familiarity with DDD, Event Sourcing, or CQRS

About the company

Unit is a financial infrastructure platform that enables technology companies to store, move, spend, and lend money inside their product. The company processes over $100B in annual transaction volume and serves 2M+ accounts.