FNTIO

Full-Stack Developer – .NET

FNTIO

full-time

Posted on:

Location Type: Remote

Location: Germany

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Salary

💰 €55,000 - €75,000 per year

About the role

  • You build .NET applications that run in enterprise environments.
  • Your primary focus is on the backend, but you understand the whole picture.
  • You translate customer requirements into architecture, have AI agents generate code, review the results critically, and deliver quality.
  • 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 feeding ideas to AI agents and iterating on their output.

Requirements

  • At least 3 years of full-stack development experience with a .NET focus
  • Experience with at least one AI CLI tool (Claude Code, Cursor, Gemini CLI)
  • Experience with cloud technologies (AWS preferred)
  • Familiarity with Git, Docker, and CI/CD
  • Ability to critically evaluate AI output and deliver enterprise-grade quality
  • Fluent in German and English
Benefits
  • Flexible working hours and 100% remote work
  • Access to AI tools and LLM keys (provided as work tools, not as a perk)
  • Real enterprise projects with ownership — products for Siemens, Deutsche Börse, Volkswagen
  • Support for AWS certifications and attendance at conferences
  • A team of ~30 engineers that shares knowledge instead of hoarding it
  • No slide-culture — we focus on building things, not on producing presentations
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
.NETbackend developmentAPI designautomated testingCI/CDcloud technologiesfull-stack developmentAI code generationprototyping
Soft Skills
critical evaluationcustomer collaborationsolution design