About the job
As an Umbraco Developer, you will take the lead in architecting our . NET platforms. You will design scalable backend architectures, implement intricate API integrations, and develop robust headless solutions. You are fluent in clean code principles, provide technical guidance, and transform enterprise challenges into high-performing, high-traffic systems that make a significant technical impact.
Your Responsibilities
You will oversee the entire lifecycle of our Umbraco solutions: from technical design and initial construction to ongoing development and optimization. You will convert complex business requirements into stable, secure, and technically advanced platforms using . NET and Umbraco. Collaborating in small, multidisciplinary teams alongside strategists and front-end developers, you will turn innovative ideas into functional solutions that significantly impact our clients' business objectives.
You will manage release cycles, implement enhancements based on user feedback, and ensure our applications remain up-to-date and performant. You are not just a passive builder; you are the technical driver ensuring our work is smarter, faster, and more powerful.
What We Seek in You
You possess a HBO or WO level of working and thinking. A completed IT education is a plus.
You have experience with Umbraco and . NET development. Experience with Sitecore is an advantage.
You have experience in customer interaction and working within agile/scrum processes.
Familiarity with Microsoft Azure is a plus.
You are fluent in Dutch and English. The primary language at Twentyseven is Dutch, but we also communicate with our clients in English.
You reside in the Netherlands or at a feasible commuting distance from Eindhoven. We work with our team in the office 2 days a week.

