Full-Stack Developer - .NET 100% Remote

FNTIO are AI-First Systems Engineers for Enterprise. We have been working productively with AI in real customer projects since 2022. Siemens, Deutsche Börse, Volkswagen. We deliver projects with responsibility for results. No body leasing, no PowerPoints. Our engineers think in architectures and decisions. AI takes over the execution. Whoever works with us is the product manager of their own AI team: with Claude Code, Cursor, and the tools that really work. Responsibilities You build .NET applications that run in the Enterprise environment. Your focus is on the backend, but you understand the big picture. You translate customer requirements into architecture, let AI Agents generate code, critically review it, and deliver quality. Not perfection on paper, but a product that works. You develop backend solutions with .NET and integrate them into AWS cloud architectures You use AI CLI tools (Claude Code, Cursor, Gemini CLI) as a multiplier for development and testing You design APIs and ensure clean integration between frontend, backend, and cloud You work directly with customers on technical requirements and solution design You rely on automated testing and CI/CD You build prototypes by giving ideas to AI Agents and iterating the output Qualifications At least 3 years of full-stack development with a focus on .NET Experience with at least one AI CLI tool (Claude Code, Cursor, Gemini CLI) Experience with cloud technologies (AWS is an advantage) Familiar with Git, Docker, and CI/CD Ability to critically evaluate AI output and deliver Enterprise quality Fluent in German and English Benefits Flexible working hours and 100% remote work Access to AI tools and LLM-Keys. Not as a benefit, but as a working tool Real Enterprise projects with ownership. Products for Siemens, Deutsche Börse, Volkswagen AWS certifications and conferences A team of ~30 engineers that shares knowledge instead of hoarding it No slide culture. We work on the matter, not on the concept We look forward to your application. Send us your CV and gladly a short statement on why you are a good fit for FNTIO. We will get in touch. Find more English Speaking Jobs in Germany on Arbeitnow