AI-Native Full Stack Engineer

OperAI-Native Full Stack EngineerEmployeeSoftware DevelopmentAbout OperOper, a European Fintech company, is a leader in cloud-based digital mortgage software. We provide personalised journeys for borrowers and lenders. Oper's technology streamlines the mortgage application process, eliminates paperwork, and increases transparency. Currently collaborating with 16 leading financial institutions across 6 European countries, our digital solutions result in a +27% increase in digital customer conversion, +81% faster mortgage decisions, and a 90% first-time-right rate.Oper's AI Analyst, Herman, is a mortgage underwriting agent that automates document validation, data extraction, fact-checking, and credit policy application to deliver fully explainable, decision-ready loan recommendations in minutes instead of hours.A passionate and engaging team of over 30 stellar Fintech operators works vigorously to transform European mortgages by enhancing efficiency and alleviating borrower anxiety. Backed by Bessemer Venture Partners and Motive Ventures, our SaaS platform has raised EUR 14 million, placing Oper at the forefront of revolutionising mortgages in Europe. Oper currently has offices in Zürich, Switzerland, and Antwerp, Belgium.Now, we’re looking for an AI-Native Full Stack Engineer to join our mission and help shape the future of automated mortgages in Europe and beyond.Building an AI-Native Services OrganisationWe believe the way software companies build products and deliver them to customers is about to change fundamentally. The old boundaries between product engineering, customer implementation, and customer success are dissolving. We are building Oper as an AI-native organisation where agents do real work across that whole chain: scaffolding features from a spec, drafting customer configuration, generating tests and documentation, and removing the repetitive work that used to sit between teams.This is in motion, not finished, and that is the point. We are looking for people who want to help define what an AI-native model actually looks like in practice, not just apply one that already exists. If you want to be at the leading edge of how services and product organisations work, this is a place to shape it.Your MissionIn this role, you will design, build, and ship product and customer-facing software across Oper’s platform. You will work across the full stack, from back-end services, APIs, integrations, and data flows to front-end user journeys and internal tooling. Your work will span core product capabilities, customer-specific configuration, implementation accelerators, and automation that helps us deliver faster and better.This is a role for someone who is AI-native: you use modern AI tooling as a core part of how you think, build, test, review, and ship. You are not joining a separate “CS engineering” or “product engineering” track. You will work where the highest-value engineering problems are, moving between product development, customer implementations, integrations, and operational tooling as priorities evolve.TasksYour ResponsibilitiesWhat you’ll doBuild and improve full-stack features across Oper’s platform, using Python on the back end and Angular on the front end.Design and implement robust APIs, integrations, micro-services, data flows, and configuration logic.Turn product, customer, and operational requirements into reliable technical solutions.Work on both generic product capabilities and customer-specific implementation needs, avoiding unnecessary one-off work where a reusable pattern is possible.Collaborate closely with Product, Engineering, Customer Success, and Operations to understand priorities, trade-offs, and delivery constraints.Be comfortable working directly with customers, system integrators, and internal stakeholders when technical clarity is needed.Own quality end to end: architecture, implementation, testing, review, deployment readiness, and operational follow-up.Work AI-nativeWe expect you to use...