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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Staff Engineer / Technical Lead Azure/.NET - **Company:** Klarstein - **Location:** Berlin, Germany - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** ASP.NET, .NET Framework, PHP (Programming Language), Agile Methodology, Artificial Intelligence, Application Performance Management, Microsoft Azure, C Sharp (Programming Language), Cloud Computing, Software Quality, Code Review, Continuous Integration, Cursor (Graphical User Interface Elements), DevOps, Distributed Systems, Entity Framework, Identity and Access Management, Microsoft SQL Server, MongoDB, NoSQL, Pair Programming, Swagger, Message Oriented Middleware, SAP (Applications), Systems Integration, Openapi, Cloud Platform System, GitHub Copilot, Software Security, SOAPAPI, Technical Debt, Backend, Event Driven Architecture, Cosmos DB, Api Design, Restful APIs, Terraform, Domain Driven Design, Serverless Computing, Key Vault, Microservices - **Published:** August 27, 2026 - **Apply:** https://www.adzuna.de/details/5857075990 ## About the Role * 8+ years of professional backend development experience with C# and the .NET ecosystem (ASP.NET Core, .NET 8/10, Entity Framework Core, REST APIs, OpenAPI/Swagger), combined with a strong architectural mindset for designing scalable, resilient distributed systems * Proven experience designing cloud-native systems on Microsoft Azure - including microservices, event-driven architecture, asynchronous messaging, and API-first design - with hands-on use of core Azure services (e.g. Service Bus, Event Grid, Azure Functions, App Services, Key Vault, Application Insights) * Experience designing secure, cost-optimized cloud architectures (networking, identity/access management, application security), and building production systems with CI/CD, Infrastructure as Code (Terraform preferred), and observability practices * Strong experience with relational and NoSQL databases (SQL Server, Cosmos DB, MongoDB) and working across heterogeneous systems - integrating .NET services, PHP applications, and third-party/enterprise platforms (e.g. SAP, REST/SOAP APIs) * Track record mentoring engineers, leading technical reviews, and driving engineering standards across teams, ideally within Agile, cross-functional environments (Product, DevOps, QA, architects) * Excellent written and spoken English Nice to have: * Familiarity with AI-assisted development tools (GitHub Copilot, Claude, Cursor, Windsurf) and using them to improve development, testing, and documentation workflows * Deep grounding in clean architecture / domain-driven design principles * Direct experience integrating with SAP or comparable large-scale enterprise platforms ## Description As Staff Engineer / Tech Lead Azure/.NET, you'll own the technical direction of our .NET and Azure platforms - leading the design of scalable, cloud-native solutions across a landscape that spans .NET and PHP-based e-commerce systems. You'll split your time between hands-on architecture work and technical leadership: driving key engineering decisions, mentoring engineers, and pushing the modernization of our platforms forward. You'll work closely with Software Engineers, DevOps, QA, and Product, and your decisions will directly shape engineering excellence, reliability, and developer productivity at Klarstein., * Own the architecture and technical direction of critical services, leading the design and implementation of complex backend and cloud-native solutions * Lead technical investigations, proof of concepts, and modernization/refactoring strategies - identifying technical debt and driving pragmatic long-term platform improvements * Collaborate across .NET, PHP, DevOps, QA, Product, and external teams, translating business requirements into scalable technical solutions * Mentor engineers through design discussions, code reviews, pair programming, and technical coaching * Drive engineering excellence - best practices in testing, security, observability, and operational reliability, including incident/root-cause support and contributing to engineering standards and documentation * Promote AI-assisted engineering practices to improve developer productivity and software quality ## Related Videos - [Navigating the Corporate Jungle: Life as a Developer in a large Company](https://www.wearedevelopers.com/videos/621-navigating-the-corporate-jungle-life-as-a-developer-in-a-large-company) - [Building Multi-Tenant ASP.NET Core Applications: Best Practices and Real-World Solutions](https://www.wearedevelopers.com/videos/1552-building-multi-tenant-asp-net-core-applications-best-practices-and-real-world-solutions) - [From DevOps to Scaled DevOps: How We’re Rebuilding Continuous Delivery as a Platform](https://www.wearedevelopers.com/videos/100018-from-devops-to-scaled-devops-how-we-re-rebuilding-continuous-delivery-as-a-platform) - [Leveraging Real time data in FSIs](https://www.wearedevelopers.com/videos/806-leveraging-real-time-data-in-fsis) - [Empowering Thousands of Developers: Our Journey to an Internal Developer Platform](https://www.wearedevelopers.com/videos/1519-empowering-thousands-of-developers-our-journey-to-an-internal-developer-platform) - [Developing ASP.NET Core Microservices with Dapr: A practical guide](https://www.wearedevelopers.com/videos/1528-developing-asp-net-core-microservices-with-dapr-a-practical-guide) ## Related Articles - [Frontend Developer Salary in Germany [2023]](https://www.wearedevelopers.com/magazine/195-frontend-developer-salary-in-germany-2023) - [Backend Developer Salary in Germany [2023]](https://www.wearedevelopers.com/magazine/196-backend-developer-salary-in-germany-2023) - [Fullstack developer salary in Germany [2023]](https://www.wearedevelopers.com/magazine/197-fullstack-developer-salary-in-germany-2023) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [Software Developer Salary in Germany [2023]](https://www.wearedevelopers.com/magazine/194-software-developer-salary-in-germany-2023) - [The Biggest German Tech Companies](https://www.wearedevelopers.com/magazine/424-the-biggest-german-tech-companies)