I'm Alex van Vlerken. For more than twenty years I've built software for high-tech products: cloud services, web applications and HMIs in .NET/C#, embedded software close to the hardware, and the integrations that connect it all.
I’m a freelance software engineer based in Eindhoven, in the middle of the Brainport high-tech region. I’ve spent my career in the R&D and IT departments of commercial companies, startups and highly regulated organizations in the healthcare and automotive sector.
I’m curious and quick to get up to speed, so I’m productive in a new codebase and domain fast. My focus is always the same: simple, maintainable, high-quality software that serves the client and the end user. I’ve filled roles from all-round developer to tech lead, usually in multidisciplinary Agile teams, and I feel most at home in the .NET/C#/Azure ecosystem.
Backends, web applications and cloud services in C#/.NET and Azure: ASP.NET Core, Blazor, Angular, REST/OpenAPI, and data pipelines that turn product and machine data into decisions.
Software close to the hardware: embedded devices, HMIs and machine control. From a handheld medical analyzer to industrial printers, including integrations using interfaces such as OPC-UA, gRPC, CAN, ModBus, Ethercat or custom.
Architecture, code quality, CI/CD and mentoring. As tech lead I help teams ship — and help less-experienced developers grow, so the team gets stronger with every sprint.
Development of a HMI and control system for a single-pass industrial printer that prints directly on objects. This is a .NET application working alongside a PLC.
Development of a web application and services that automatically reads and analyzes structured logging and counter data from industrial printers, and compiles a maintenance work plan for the service engineers’ back office, turning raw machine data into scheduled, actionable work.
Development of a cross-platform GUI tool for analysis, testing and configuration of advanced energy storage systems. Also improved the development lifecycle of AGV battery systems, including embedded tooling, CI pipelines and automotive-grade (ISO 26262) practices.
Built embedded software and R&D tooling for the MiniCare I-20, a handheld point-of-care blood analysis device. Software developed under medical-device rigor and behaviour driven development.
Other work The full project history is on LinkedIn or available as a detailed CV on request.
I like being involved in the full software lifecycle, from requirements and architecture to testing, delivery and support. I work Agile by default, start from BDD where it fits, write unit tests as a habit, and set up CI/CD so that changes ship quickly and safely.
I use AI coding agents and assistants in my daily work. Everything they produce goes through the same review, tests and CI as code I write myself. That is what keeps AI a productivity gain instead of a source of technical debt.
Above all, I keep things simple. The best code is code the next developer understands, and the best solution is the one that actually fits the client and the end user.
Looking for a senior .NET developer or tech lead who is equally at home in the cloud and close to the hardware? I’m based in Eindhoven and available for freelance assignments, on-site in the Brainport region or hybrid/remote.