(Senior/Staff) Backend Engineer

The role

You will design and build clean, testable, and efficient backend systems. You will architect scalable APIs and infrastructure while owning core systems end to end.

What you will do

• Design and build backend systems that are clean, testable, and efficient
• Architect scalable APIs and infrastructure for high-trust environments
• Own core systems end to end, and stay hands-on in the code
• Bring strong opinions on testing, quality, and long-term maintainability
• Tackle complex product challenges with a user-first mindset
• Shape our engineering practices and technical culture

Required qualifications

• Senior or staff-level experience building and owning production systems
• Systems thinking
• Clear communicator
• Appetite for learning and working in ambiguity
• Curiosity
• Big ambitions
• Kindness

Nice to have

• built AI features and the evaluations behind them
• worked on product analytics
• Experience with Node.js + TypeScript, Event Sourcing, Express, Postgres, RabbitMQ, Kubernetes, AWS

About the company

Duna is a remote-first team of builders whose mission is to redefine identity for the global economy. They are backed by investors including Index Ventures and executives from companies like Stripe, Adyen, and OpenAI.