Senior Full Stack Developer (PHP & Vue.js)

Dyflexis
Dyflexis

Software Engineering

The Hague, Netherlands

EUR up to 6,500 / month

Posted on Aug 19, 2026

At Dyflexis, we help millions of employees worldwide with our workforce management software. From the bakery around the corner to international hotel and retail chains. The software is powerful, customer questions are diverse, and no two days are the same. You'll get to know the product inside out and contribute to something that's growing rapidly in more than 20 other countries.

How do we do it? We work in a fast-paced environment with short communication lines. There are no unnecessary meetings and no politics. Our Focus? Ownership, clear communication, and getting things done together. We move quickly, learn by doing, and continuously improve how we support our customers. We're expanding the engineering team, and we need a Senior Full Stack developer who moves across the stack and unblocks whatever's stuck, frontend or backend.

This is what you’ll do

As a Senior Full Stack Developer at Dyflexis, you keep features moving for over a million users. You join a squad with a Product Owner, a UX designer and fellow engineers, and you go wherever the work needs you. One day you’re deep in a Vue.js 3 component, the next you’re in PHP 8, Symfony and MySQL, solving the backend logic that’s holding the frontend back. You don’t pick a lane. You see the whole picture and help decide how features are built across the stack.

You start by getting to know the codebase and how we work, then take ownership of full projects. We build in six-week cycles, followed by two weeks to reflect and reset. You get involved early, question assumptions, and stay close to the team from idea to release.

  • Own features end to end across Vue.js 3 and PHP 8 / Symfony, wherever the squad needs you most.

  • Shape technical solutions with fellow engineers, the Product Owner and UX, and help make architecture calls across frontend and backend.

  • Review merge requests and give direct feedback. Take it well too.

  • Keep performance and security front of mind: measure, flag issues and propose better alternatives.

  • Understand what you’re building and why, so your work stays aligned with where the product is headed.

  • Help other engineers grow, especially in the part of the stack they know less.

This is what you’ll need

  • 5+ years as a full stack developer, including at least 2 in a senior role, and equally at home in frontend and backend code.

  • Strong hands-on experience with Vue.js 3, PHP 8 (Symfony) and MySQL in production.

  • Experience with Git (GitLab or GitHub), Docker and automated testing.

  • A solid grip on security best practices, and you know how to measure and optimise performance.

  • You’ve made technical decisions that span frontend and backend, and you can explain the trade-offs.

  • Product sense: you ask what problem a feature solves before you build it, and push back when it doesn’t add up.

  • Ownership: you unblock what’s stuck without waiting to be asked, and flag risks early.

  • You listen well, adapt fast and switch between frontend and backend as the project needs.

  • Bonus points for a background in B2B SaaS or HR tech.


What you'll get

At Dyflexis, you'll be part of an ambitious, energetic, and customer-focused team. We offer:

  • Fixed salary up to 6.500€ gross per month based on a 40-hour week (skill based).

  • Personal development budget to level up your skills.

  • 25 vacation days + your birthday off in exchange for cake.

  • An in-house chef surprising you daily with fresh lunch.

  • The best parties, drinks & trips (Winter sports, Ibiza & more).

  • Membership at ARJ Training boxing gym (home of champion Tarik & Levi Rigters).

  • Solid pension plan & 8% holiday allowance.

  • Buy or sell vacation days, you decide.

  • Travel allowance and WFH compensation.

  • Friday chair massages to kick off your weekend.

Apply now
Ready to unblock a growing team and ship features a million people use?
Hit apply. No cover letter needed, we'll ask a few questions and get back to you quickly.

Note: Contact by job agencies and recruiters will not be appreciated.