Haystack People is a leading, specialized front-end agency in Utrecht, known for its innovative projects and focus on the latest technologies. They work for a wide range of clients, from large corporations to start-ups, helping them realize their digital ambitions. The company fosters an open and informal culture where collaboration and knowledge sharing are central, and the team comprises driven and talented professionals.

About the Position

Introduction

As a Senior Front-end Developer, you are an absolute specialist in your field and a leader in your role. You combine technical expertise with a significant dose of creativity, building beautiful and user-friendly websites and applications, always focusing on clean code and the latest standards. You are eager to share knowledge, coach teammates, and continuously improve the quality of work. You are entrepreneurial, actively contribute to technical architecture and solutions, and maintain a proactive attitude.

Responsibilities

Work with one or more of the following front-end technologies: React, Vue, or Angular.
Tackle diverse and challenging projects, from corporate websites for large organizations to complex web applications and innovative platforms for start-ups.
Collaborate with a team of designers, back-end developers, and project managers to create the best possible digital experiences.
Be responsible for the front-end architecture of projects, code reviews, and coaching (medior) developers.
Actively participate in professionalizing the development pipeline using tooling (CI/CD) and automated testing (end-to-end).

Requirements

Minimum of 5 years of relevant work experience as a Front-end Developer.
Excellent knowledge of HTML, CSS, and JavaScript.
Extensive experience with one or more modern JavaScript frameworks (React, Vue, Angular).
Experience with architecture and setting up large front-end projects and libraries (Storybook).
Knowledge of modern tooling (Vite, Rollup, Webpack).
Experience with automated tests (Jest, Cypress, Playwright).
Sharp attention to detail and a passion for user experience (UX).
Strong communication skills and a true team player.
Dutch language skills preferred (working knowledge required for this role based in the Netherlands).

Benefits

A competitive salary between €4,000 and €5,500 gross per month.
Excellent secondary employment conditions, including a laptop and travel expense reimbursement.
Much freedom and responsibility in your work, with room for your own initiative.
An informal working atmosphere with many fun outings and gatherings.
The opportunity to work with the newest technologies and frameworks.
Ample development opportunities and room for continuous growth, both broadly and deeply.
An inspiring workplace in the center of Utrecht, with the option for (partial) remote work.
A dedicated team of experienced professionals from whom you can learn a lot.

About Company

You will join a leading, specialized front-end agency in Utrecht, known for its innovative projects and focus on the latest technologies. They work for a wide range of clients, from large corporations to start-ups, helping them realize their digital ambitions. There is an open and informal culture where collaboration and knowledge sharing are central. The team consists of driven and talented professionals constantly seeking new challenges and opportunities. If you want to know more about this front-end agency, I'd be happy to get in touch with you!