Software Engineer (.NET Backend)

• Design, build, and maintain .NET Web APIs that power our customer and internal services
• Develop scalable data models and business logic with C# and Entity Framework Core, backed by MS SQL Server
• Deploy and operate applications on Azure (App Service, Azure SQL, Storage Accounts, Key Vault, etc.)
• Set up and maintain CI/CD pipelines using Azure DevOps
• Collaborate closely with frontend, product, and operations teams to deliver high-impact features
• Write clean, secure, and well-tested code; implement logging, monitoring, and alerting
• Contribute to infrastructure as code with Terraform (basic knowledge is enough; we will teach you more)
• Help improve performance, scalability, and reliability of our backend services
• Participate in code reviews, share knowledge, and grow with the team

Do you have experience in TypeScript?, (We value growth and diversity over perfect alignment - aim for 50 % match and apply even if you do not tick every box.)

• 1-4 years of professional experience building backend services with .NET / C#
• Solid knowledge of .NET Web API development and RESTful service design
• Familiarity with Azure cloud services (App Service, Storage, SQL, Key Vault, etc.)
• Experience with MS SQL Server and Entity Framework Core
• Understanding of CI/CD pipelines and Git version control
• Basic exposure to infrastructure as code (Terraform or similar)
• Good grasp of software engineering best practices (clean architecture, SOLID, testing)
• Strong debugging and troubleshooting skills
• Excellent communication in English (German is a plus)

Nice to have (bonus points):

• Basic frontend knowledge (e.g., React, TypeScript) to occasionally support full-stack tasks or collaborate more effectively with frontend engineers
• Experience with messaging/queueing (e.g., Azure Service Bus)
• Knowledge of authentication/authorization (e.g., Azure Entra ID/OAuth2)
• Understanding of caching (Redis, Azure Cache)
• Familiarity with microservices and containerization (Docker)

At Enpal Heat, we are building the future of clean heating. As the heat pump division of Enpal, Germany's first green unicorn and one of Europe's fastest-growing climate-tech companies, we are on a mission to decarbonize heating in millions of homes. We are looking for a .NET Backend Engineer (mid level) to help us design, build, and scale the software that powers our heat pump business - from installation planning to intelligent home energy management. About the team: We are part of Enpal Heat's Venture Development unit, which provides customers with renewable heating solutions. Our position means that we are tightly integrated with product and business development. We build services and automations that streamline operations at Enpal Heat, ranging from APIs and internal tools for support agents to integrations with third-party services and our CRM. Enpal Heat is growing rapidly, and the demands on our systems are becoming more complex every day. If you want to tackle these challenges in a dynamic and fast-paced environment, we would love to hear from you!, Why Enpal Heat: * Work in one of Europe's most ambitious heat pump businesses, part of Germany's first green unicorn * Build backend software that drives the decarbonization of home heating at scale * Shape how Backend Engineering is set up at Enpal Heat - your voice matters * Use modern .NET, cloud-native architecture, and DevOps practices * Enjoy a diverse, hybrid workplace with over 65 nationalities * Grow fast with a steep learning curve, mentorship, and real ownership