> Markdown version of [/jobs/ext/1557767-medior-senior-front-end-developer-net-core](https://www.wearedevelopers.com/jobs/ext/1557767-medior-senior-front-end-developer-net-core). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Medior/Senior Front-End Developer (.net core) - **Company:** Yellowtail Conclusion - **Location:** Naarden, Netherlands (Remote available) - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** ASP.NET, .NET Framework, Agile Methodology, ASP.NET MVC Framework, Automation of Tests, Microsoft Azure, C Sharp (Programming Language), Cloud Computing, Code Review, Continuous Integration, DevOps, Human-Computer Interaction, JQuery, Microsoft SQL Server, Model View Controller (MVC), Software Engineering, .NET Core, Blazor, Backend, AngularJS, Information Technology, Front End Software Development - **Published:** July 15, 2026 - **Apply:** https://www.adzuna.nl/details/5765114551 ## About the Role * A relevant bachelor s or master s degree in Computer Science, Software Engineering, or a related field. * 3 5 years of professional development experience. * Strong experience with C# and UI / UX development and .net core. * Somebody open and eager to learn new technologies like Blazor. * A proactive mindset with strong communication skills in English (Dutch is an advantage). * Team spirit: you enjoy collaboration, providing constructive feedback, and contributing to a dynamic team. * Experience working within agile development teams and a solid track record of independently solving technical challenges. ## Description * 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., * Front end: .net MVC, jQuery, optionally Blazor or Angular * Back end: C#, ASP.NET * Data & cloud: MS SQL Server, Azure * DevOps: CI/CD pipelines, code reviews, automated testing You ll primarily work on the .net core mvc front end but have the opportunity to contribute across the stack if desired. What We Offer * Salary between 3400 and 5300 gross per month; * 674,25 mobility budget per month (can be used for travel expenses or as additional salary); * All essential matters well-organized: a high-speed laptop, phone, excellent pension plan, travel allowance, and daily lunches; * Flexible working: largely choose where and when you work. We believe in maintaining a healthy work-life balance and support you in setting up a comfortable home office or even working remotely from your favorite vacation spot; * A friendly, informal culture: we frequently organize activities such as company trips, hackathons, sports events, and more. Every other year, there s either a major company trip or a large-scale hackathon; * Room for personal growth: you will receive mentoring and coaching from senior developers, enabling you to quickly learn and advance. 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