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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Developer (.NET / Azure) - **Company:** UAB-ONLINE B.V. - **Location:** Mijdrecht, Netherlands - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** ASP.NET, .NET Framework, Multitier Architecture, Agile Methodology, Artificial Intelligence, Software Applications, Automation of Tests, Microsoft Azure, Microsoft Online Services, C Sharp (Programming Language), Cloud Computing, Software Quality, Continuous Integration, Software Design Patterns, Entity Framework, Microsoft SQL Server, Software Architecture, Software Construction, Software Engineering, Enterprise Software Applications, Delivery Pipeline, Technical Debt, Vue.js, Solid Principles, Kubernetes, Front End Software Development, Legacy Systems - **Published:** September 22, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=a5f2aae2d9bb9b4b ## About the Role * Experience working in an Agile environment * Ability to work effectively in a cross-functional team while also being comfortable working independently * Adaptability in a dynamic environment with changing priorities * A proactive approach to problem-solving and continuous improvement * Integrity and professionalism when working with business-critical systems and information * Comfortable working in an ISO-certified environment, including ISO 27001 and ISO 9001, and following agreed processes for quality, security, and continuous improvement For the Senior Software Developer role, we additionally value: * Strong professional experience with C#, .NET, ASP.NET, and Entity Framework * Experience building and maintaining enterprise-scale applications * Strong knowledge of Clean Architecture, SOLID principles, and software design patterns * Experience modernizing legacy systems and improving existing platforms * Hands-on experience with Microsoft Azure and modern CI/CD practices * Experience with automated testing and software quality practices * An interest in AI-assisted software development or AI-powered applications * Strong communication skills and a collaborative approach to software engineering * The ability to make well-considered technical decisions and explain them to others * Full professional proficiency in English, both spoken and written Experience with the following is considered a plus: * Maritime, logistics, or supply chain environments * Microsoft SQL Server * Vue.js * Kubernetes * Advanced Microsoft Azure services * Working closely with Product Owners and Agile product teams ## Description You design, build, and improve scalable enterprise applications within a modern Microsoft ecosystem. In addition to delivering new functionality, you contribute to architectural decisions, strengthen our engineering practices, and help reduce technical debt. You combine strong software engineering skills with a practical mindset and take ownership of your work from concept through production. In this role, you work closely with developers, Product Owners, UX, QA, Cloud, and other colleagues. You enjoy solving complex technical challenges, sharing knowledge, and continuously improving the way software is designed, tested, and delivered. You will also have the opportunity to explore how AI-assisted development and coding agents can improve both our development process and our product., As a Senior Software Developer, your work combines hands-on development with technical improvement and collaboration. One moment you may be designing and implementing a new feature, while the next you are reviewing code, improving a deployment pipeline, or working with colleagues on the modernization of an existing part of the platform. You can expect a role in which you have visible impact, contribute to technical decisions, and help shape the future of a business-critical platform used by maritime organizations around the world. Your work will include: * Designing, building, and enhancing enterprise SaaS applications using C# and .NET * Taking ownership of features from initial concept through development and production * Contributing to the modernization of our platform and the continued development of its architecture * Building reliable, scalable, and maintainable solutions using Clean Architecture and SOLID principles * Reviewing code and promoting software engineering best practices * Developing and improving CI/CD pipelines and deployment processes * Implementing automated testing throughout the development lifecycle * Working with Azure cloud services and modern DevOps tooling * Exploring and introducing AI-assisted development workflows and coding agents * Collaborating with Product, UX, QA, Cloud, and Frontend colleagues * Identifying opportunities to reduce technical debt and improve delivery efficiency For this role, we are looking for an experienced software developer who combines strong technical expertise with ownership, curiosity, and a collaborative mindset. You are comfortable working on both new functionality and existing systems, and you enjoy contributing to long-term technical improvements. ## 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) - [Understanding Kubernetes in a visual way](https://www.wearedevelopers.com/videos/100085-understanding-kubernetes-in-a-visual-way) - [Lessons learned from building a thriving Vue.js SaaS application](https://www.wearedevelopers.com/videos/1666-lessons-learned-from-building-a-thriving-vue-js-saas-application) - [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) - [Instant KAI Sandboxes with vCluster: Multi-Tenant, Multi-Scheduler GPU Sharing](https://www.wearedevelopers.com/videos/100333-instant-kai-sandboxes-with-vcluster-multi-tenant-multi-scheduler-gpu-sharing) - [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 - [Software Developer Salary in The Netherlands [2023]](https://www.wearedevelopers.com/magazine/217-software-developer-salary-in-the-netherlands-2023) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [The Netherlands – Europe’s powerhouse for software development?](https://www.wearedevelopers.com/magazine/31-the-netherlands-europe-s-powerhouse-for-software-development) - [How to Find Tech Jobs in Amsterdam](https://www.wearedevelopers.com/magazine/279-how-to-find-tech-jobs-in-amsterdam) - [How to land a developer job in Amsterdam](https://www.wearedevelopers.com/magazine/36-how-to-land-a-developer-job-in-amsterdam) - [Best Companies in the Netherlands: Top 25 Companies in 2023 ](https://www.wearedevelopers.com/magazine/193-best-companies-in-the-netherlands-top-25-companies-in-2023)