Mid/Senior Full-Stack Developer (.NET + React) | International Insurtech Product

100% remotely with occasional business trips or in our office: Warszawa Hi, Polcode here!We’re a global technology partner that values collaboration, ownership, and a practical approach to building software. Our team of almost 100 professionals helps build and improve digital businesses, software platforms, eCommerce stores, websites, apps, and everything in between. And they’re good at it. We’re looking for a strong Mid or Senior Full-Stack Developer (.NET + React) to join an ongoing project and work directly with a client team based in Israel. The project is in the insurance domain and combines further development of an existing system with a broader transformation from a legacy, on-premises solution towards a cloud-based SaaS model. Backend development is the main focus, but you’ll also work across the stack, including React.js interfaces, external integrations, legacy refactoring, and AI-powered automation. This is a role where the person behind the technical skills matters a lot. We’re looking for someone who communicates clearly, takes responsibility, works independently, and is comfortable discussing technical challenges and progress directly with an international team. Why this project is worth your attention: Ongoing cooperation with no fixed end dateOpportunity to contribute to the transformation of an existing insurance system towards a SaaS modelA varied engineering scope combining backend, frontend, integrations, architecture, and legacy modernizationBackend-focused role without being limited to one part of the stackExposure to AI-powered automation and modern AI-assisted development workflowsDirect cooperation with an international client teamA role where communication, ownership, and engineering judgment are genuinely important. Perks of being a #Polcoder: Multisport card, private medical care, life insurance, and meaningful gifts to celebrate important daysAll the necessary equipment for comfortable workProfessional onboarding processWe respect your private life - no overtime, no weekend jobs, work-life balance only, promise!Work at times that suit your daily rhythm, from the place of your choiceYour work is appreciated - we believe in the power of feedback, as well as the one you give us. TL;DR Strong Mid/Senior Full-Stack Developer.NET / C# + React.js, with backend as the main focusInsurance / Insurtech domainSaaS transformation, integrations, legacy modernization, and AI automationStrong communication, independence, and ownership matterHebrew is a big plus, not a requirementOngoing cooperation, start ASAPB2B: 100–180 PLN/h + VAT We strongly believe that putting people first makes our work better. We encourage you to grow your career, contribute to open source, and follow your passion. We wanna do great things with you! 💜 Sounds like a match? Let’s talk! If you feel this is your direction, but don’t meet every single requirement, still reach out. We’d love to hear your perspective and tell you more - Ela is always open for a quick chat.