(Senior) Software Engineer - Microsoft Dynamics 365 and Azure (m/f/d)

ABOUT US Unzer is a leading European fintech company with a mission to simplify international payments for e-commerce and retail businesses. Our brand was formed from 13 companies that now contribute to building a unique product covering the entire payment flow. At Unzer, we are driven by the belief that customers should enjoy a seamless shopping experience, no matter where they choose to shop. We are a team of over 700 experts of 55 different nationalities, dedicated to creating a state-of-the-art unified commerce platform. Our goal is to enable businesses to delight their customers with a seamless payment experience. Whether you're a tech enthusiast, payment expert, or a dedicated support professional, we are looking for individuals who are passionate about making a difference. Our offices: We are based across Austria, Denmark, Germany and Luxembourg, with a HQ in Berlin. ABOUT THE TEAM Help us connect Microsoft Dynamics 365 with our wider technology platform. As part of a cross-functional team, you will work with product managers, business stakeholders and engineers to turn business needs into reliable software. Your work will combine Dynamics 365 and Power Platform development with Azure services, secure APIs and event-driven integrations, taking solutions from design through deployment and operation. . What your work will look like: • Design, develop, and maintain Dynamics 365 CRM solutions on Dataverse, including data models, plug-ins, custom APIs, model-driven Power Apps, and Power Automate flows. Choose configuration or custom code according to maintainability, performance, and business needs. • Build Azure applications and integration services using C# and .NET, with services such as Azure Functions, App Service, and API Management to connect Dynamics 365 with the wider platform. • Develop and consume REST APIs, Dataverse Web API and OData endpoints, and GraphQL APIs. Define clear contracts, validation, versioning, and error handling with the teams that own connected systems. • Connect Dynamics 365 and Azure services to Apache Kafka through integration services and event producers and consumers. Design for retries, duplicate messages, schema evolution and reliable data synchronisation . • Implement secure service-to-service access using OAuth 2.0 and Microsoft Entra ID, including app registrations, permissions and managed identities where appropriate . Protect credentials and secrets with Azure Key Vault. • Build and improve CI/CD for Dynamics 365, Power Platform and Azure applications. Use Git and Azure DevOps or GitHub Actions to automate builds, tests and deployments, including solution packaging, managed solutions, environment variables and connection references. • Own quality and operability through automated unit, integration and API contract tests, code reviews, monitoring and troubleshooting: document technical decisions and support releases and production incidents. • Work closely with business and engineering colleagues to clarify requirements, agree acceptance criteria and deliver usable solutions in small increments. What you need to be successful in this role: • Professional software engineering experience, including hands-on delivery of Microsoft Dynamics 365 CRM and Dataverse solutions in production. • Strong C# and .NET skills, plus JavaScript or TypeScript for Dynamics 365 customisation . Practical experience with Power Apps, Power Automate, plug-ins, Dataverse data modelling and security roles. • Experience developing and operating applications on Azure, with an understanding of cloud security, configuration, logging, monitoring and application performance. • Practical experience with REST, GraphQL and OAuth 2.0, and the ability to design, implement and troubleshoot integrations acros