Backend Developer, C#/.NET

Hypoport SE

Backend C#/.NET developer building APIs, microservices, and financial and real-estate software for FIO. Remote across Germany, collaborating in an agile development team.

Posted 9/4/2026full-timeRemote • 🇩🇪 GermanyMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Proficient in C# and .NET development with extensive experience in designing and implementing REST APIs within a microservices architecture. Strong understanding of object-oriented software development, Clean Code principles, and relational databases, complemented by excellent language skills in German and English.

Highest-signal resume keywords

C# DevelopmentASP.NET CoreREST API DesignPostgreSQLMicroservices Architecture

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

C#ASP.NET CoreREST API DevelopmentObject-Oriented Software DevelopmentRelational Database ProficiencyClean CodeAutomated TestingPerformance AnalysisTechnical Debt ResolutionAI Tools Development

Soft Skills

Solution-Oriented ApproachTeam-Focused CollaborationIndependence

Tools & Technologies

DockerCI/CDRabbitMQMicroservices

Industry Keywords

Backend ServicesAPIsSoftware LifecycleProduction ServicesModern Development Tools

Tech Stack

Tools & technologies

ASP.NETDockerMS SQL Server.NETPostgresRabbitMQSQL

About the role

Key responsibilities & impact

Develop and enhance backend services and APIs using C# and .NET within a modern microservices architecture
Design and implement modern REST APIs
Work with PostgreSQL and Microsoft SQL Server
Take active responsibility for operating services in production throughout the entire software lifecycle
Analyze and permanently resolve bugs, performance issues, and technical debt
Collaborate closely with frontend, QA, UX, Product Management, and other development teams
Contribute to technical decisions and the continuous modernization of products
Help shape new AI tools and AI-powered product features

Requirements

What you’ll need

Several years of experience in C# and .NET development
Excellent knowledge of object-oriented software development and ASP.NET Core
Experience designing and developing REST APIs
Proficiency with relational databases
Understanding of Clean Code, automated testing, and maintainable software architectures
Experience with Docker, CI/CD, RabbitMQ, or microservices architectures is a plus
Openness to new technologies and modern development tools, including AI-powered tools
Independent, solution-oriented, and team-focused approach to work
Very good German language skills, at least C1 level
Solid English language skills

Benefits

Comp & perks

Corporate benefits
Employer contribution to occupational pension or disability insurance
Wellhub membership
Contribution toward the Deutschlandticket
30 vacation days per year (based on a five-day workweek)
Workation opportunities
Flexible working hours
Experienced colleagues who will support you and welcome you to the team
A high degree of freedom and scope for implementation
The opportunity to contribute across the Hypoport Group and leverage support from across the Group
A personal and flexible working environment that takes your needs into account