Software Engineer (.NET Backend) (f/m/d)

Company Description

<p>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.</p><p>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.</p><p><strong>About the team:</strong></p><p>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.</p><p>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.</p><p>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!</p>

Job Description

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

Qualifications

<p><em>(We value growth and diversity over perfect alignment - aim for 50 % match and apply even if you do not tick every box.)</em></p><ul><li>1-4 years of professional experience building backend services with .NET / C#</li><li>Solid knowledge of .NET Web API development and RESTful service design</li><li>Familiarity with Azure cloud services (App Service, Storage, SQL, Key Vault, etc.)</li><li>Experience with MS SQL Server and Entity Framework Core</li><li>Understanding of CI/CD pipelines and Git version control</li><li>Basic exposure to infrastructure as code (Terraform or similar)</li><li>Good grasp of software engineering best practices (clean architecture, SOLID, testing)</li><li>Strong debugging and troubleshooting skills</li><li>Excellent communication in English (German is a plus)</li></ul><p><strong>Nice to have (bonus points):</strong></p><ul><li>Basic frontend knowledge (e.g., React, TypeScript) to occasionally support full-stack tasks or collaborate more effectively with frontend engineers</li><li>Experience with messaging/queueing (e.g., Azure Service Bus)</li><li>Knowledge of authentication/authorization (e.g., Azure Entra ID/OAuth2)</li><li>Understanding of caching (Redis, Azure Cache)</li><li>Familiarity with microservices and containerization (Docker)</li></ul>

Additional Information

<p><strong>Why Enpal Heat:</strong></p><ul><li>Work in one of Europe’s most ambitious heat pump businesses, part of Germany’s first green unicorn</li><li>Build backend software that drives the decarbonization of home heating at scale</li><li>Shape how Backend Engineering is set up at Enpal Heat - your voice matters</li><li>Use modern .NET, cloud-native architecture, and DevOps practices</li><li>Enjoy a diverse, hybrid workplace with over 65 nationalities</li><li>Grow fast with a steep learning curve, mentorship, and real ownership</li></ul><p>Ready to build products that make a real impact on the climate? We would love to meet you. Even if you do not meet every requirement, we encourage you to apply - your unique strengths might be exactly what we need.</p><p><em>At Enpal, we celebrate diversity. All qualified applicants receive consideration without regard to skin color, religion, ethnic or national origin, gender identity, sexual orientation, disability, or age. We foster a safe and respectful workplace for everyone.</em></p>