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

Posted 30 Sep 2026
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Work experience
2 to 10 years
Full-time / part-time
Full-time
Job function
Salary
€3,400 - €5,300 per month
Degree level
Required language
English (Fluent)

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Yellowtail Conclusion is onderdeel van het Conclusion ecosysteem

Introduction

At Yellowtail Conclusion, we develop software that strengthens digital security in 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/Senior Front-End Developer (.net core) 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.

  • Team: Key Control Dashboard
  • Ervaring: mid_level
  • Education: master_degree
  • Salary: € 3400 - 5300 (per month)

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.

Yellowtail Conclusion is dé specialist als het gaat om optimalisaties en innovaties in bedrijfsvoering en IT binnen de financiële wereld. Door het slim combineren van kennis van de financiële business, IT, innovatievermogen en implementatiekracht zorgen wij dat consumenten meer grip op hun financiële situatie en toekomst hebben. We lopen voorop in de markt, zijn ambitieus en groeien snel. Daar zijn we trots op. Net als op onze medewerkers die stuk voor stuk ondernemend, benaderbaar en slim zijn.

Management Consulting
Naarden
Active in 1 country
127 employees
60% men - 40% women
Average age is 32 years