Medior/Senior Front-End Developer (.net core)

Confidential

Naarden, Noord-Holland, Nederland permanent

Posted: January 30, 2026

Required Skills

Job Description

Introduction

At Yellowtail Conclusion, we develop software that strengthens digital security in one of the most digitized countries in the world: the Netherlands. One of our flagship products, Key Control Dashboard (KCD), enables organizations to manage risks effectively through smart, user-friendly technology.

To keep innovating, we’re looking for a Medior Front-End Developer who enjoys working with front-end technologies. You’ll join a passionate, highly skilled development team based entirely in the Netherlands, contributing to a great platform.

Why This Is Your Next Job as a Medior Developer

• Contribute to our UI transformation. We’re currently migrating our ASP.NET MVC application to .net core Application and front end. As a medior developer, you’ll play an important role in this transition—building new components, refining user flows, and helping shape a clean, maintainable front-end architecture alongside our lead engineer.

• Front-end focus, real impact. Your core responsibility will be developing and enhancing the new UI. You’ll work closely with backend developers, UX designers, and product owner to deliver a smooth and intuitive user experience.

• Innovative environment. We encourage learning and experimentation. Have an idea to improve performance or user interaction? We want to hear it—and help you test it.

• Growth and ownership. You’ll be trusted with real responsibility, contribute to technical decisions, and mentor junior developers as part of a collaborative team.

We truly value your talent and want to support your growth. At KCD, you will have ample learning opportunities and the freedom to discover your strengths.

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