Senior Backend Software Engineer

Senior backend engineer? Build payment infrastructure handling 150M+ API calls every month. At Dintero, you are not working on the edges of a product. You build core systems where failure has real consequences. We develop and operate the entire platform ourselves and control the full payment flow. This gives us deep technical ownership, real responsibility, and engineers who influence architecture, not just implementation. Dintero operates in a space that is complex in two dimensions: Technical complexity – distributed systems, high throughput, strict uptime requirementsRegulatory complexity – payment schemes, compliance, auditability, and financial correctness We are also at the forefront of innovation in the payment space: First to implement Passkeys with MastercardEarly adopters of real-time clearing APIsFirst new acquirer in Norway in over 20 years This is a role for engineers who want to work on serious backend systems that must work, every time. Production at Scale 150M+ API calls per month14 engineers – small team, high ownershipInfrastructure designed for high availability and robust transaction flows What You Will Work On Design and own backend services end-to-endBuild APIs used directly by merchants and partnersMake architectural decisions with long-term impactWork with scalability, observability, and operational qualityShip to production frequently and take ownership of what you buildIn short: less coordination, more engineering. Tech Stack Deliberate choices. Minimal hype. AWS (Fargate, Lambda, DynamoDB, Aurora)MicroservicesNode.js and TypeScriptInfrastructure as CodeAPI-first We value sound engineering decisions over chasing trends. Your Profile You have experience working with complex systems in production.5+ years of backend development experienceExperience with distributed systems and architectural trade-offsComfortable owning systems end-to-endExperience where reliability, correctness, or compliance matterCloud experience – AWS is a plus, not a requirementScandinavian language (Norwegian, Swedish, or Danish) is a plus, but not required. This Role Is a Strong Fit If You Have Worked With Payment systems or financial infrastructureHigh-throughput APIs or event-driven systemsSystems with strict uptime, latency, or consistency requirementsRegulated domains (fintech, banking, etc.) This Role Is Likely Not Right If You Prefer frontend-focused workWant heavy processes and multiple decision layersPrefer narrowly defined tasks over ownershipWe are intentionally a small team. Everyone contributes to core decisions. Why Dintero Real ownership of critical systemsStrong engineering culture – high trust, low politics, good ideas winShort decision pathsWork that has direct real-world impactEnterprise customers such as Vy, and regulatory approval to offer payment services across the EU and EEA The Numbers Behind the Growth 2,100+ new businesses onboarded in 2025150%+ volume growth and 200%+ revenue growthProfitable from Q3 2025Norway's only new card acquirer in over 20 years, licensed to process Visa and Mastercard transactions directly We believe strong engineers stay where their judgement is taken seriously. Latest Growth Update Dintero has achieved 150% growth year-to-date in 2026The target remains 3x growth for the full yearA pilot of payment terminals was completed during the summerCustomers and partners can now offer true Unified Commerce with the same API across online and in-store channels We need two new senior's - Apply with Linkedin, or directly at: https://your-headway-as.notion.site/6a2961bd1f154f5483382a5d0f5159a3?pvs=105