Backend Engineer

At Duna, we see the company as the second product we’re building and are continually working to create a transparent, ambitious culture. We want this to be the place where you do your best work. Our mission is to redefine identity for the global economy. We’re backed by world-class investors including Index Ventures as well as founders and executives from companies like Stripe, Adyen, Notion, Remote, Qonto, Framer, Anthropic, Mollie, OpenAI, Goldman Sachs. Since your role with us will rarely fit a job description, we only wrote a crisp overview. What you'll be doing in this role Design and build backend systems that are clean, testable, and efficient Architect scalable APIs and infrastructure for high-trust environments 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 What we're looking for Systems thinking - you see beyond features to long-term system behaviour Clear communicator who enjoys breaking down complexity and collaborating deeply Appetite for learning and working in ambiguity Curiosity Big ambitions Kindness Our current stack includes