Fullstack Web Developer (PHP, React)

About us

We’re a Design and Development Studio based in Mamer, Luxembourg. We specialise in crafting seamless and smooth Multi-device Experiences for various types of Digital Products.

We build long-term partner relationships with amazing customers, from established companies to ambitious entrepreneurs. We collaborate directly with them, understand their challenges and build things we’re proud of.

We’re looking for a Fullstack Web Developer who enjoys building across the stack, brings ideas to the table and takes ownership of their work.

You

• You have solid experience building web applications with PHP and Symfony.
• You’re comfortable with React, JavaScript, HTML and CSS, and can turn designs into responsive, accessible interfaces.
• You know how to connect frontend and backend systems through well-designed APIs and integrations.
• You use AI tools such as Codex, Claude Code or similar confidently throughout your development workflow. They’re part of how you concept, build, debug and review.
• You own the code you ship, you can challenge assumptions and validate code through review and testing. You own its quality and security.
• You take responsibility from the first technical decision to the finished result, paying attention to maintainability, performance and costs.
• You’re curious about new tools and approaches, and thoughtful about when they add value.
• You enjoy working with designers, developers and customers, sharing your ideas and questioning your own work when it helps improve the outcome.
• You’re comfortable working and communicating in English and French, our working languages. Luxembourgish is a strong advantage.

Your missions

• Build and improve websites and web applications using PHP, React, Next.js, Headless and TYPO3.
• Work with designers and customers to turn their needs into practical technical solutions.
• Develop responsive interfaces, backend features, APIs and integrations.
• Review, test and improve your work, with attention to security, accessibility and performance.
• Maintain existing applications and help them evolve.

What’s in it for you?

• The chance to build meaningful work with customers you’ll get to know firsthand.
• A small, approachable team where you can question, contribute and help shape how we work.
• Responsibility, room to grow and colleagues to learn with.
• A permanent contract (CDI).
• Flexible working hours and the equipment you need.
• You'll work in the best office space in Luxembourg.
• Regular team events and no dress code. Come as you are.

Sounds like you?

Send your CV to jobs@apart.lu, along with a short motivation letter telling us about yourself and why you’d be a good fit for our team.

Add a few examples of your work too, whether it’s a portfolio, your GitHub or a project you’re proud of, and tell us what you built, which decisions were yours and how you used AI along the way, if relevant.

This role is on-site at our office in Mamer, Luxembourg, with some remote days possible, and we’re looking for someone who can start immediately.

Apply Now:

https://apart.lu/careers/fullstack-php-react

See you soon!