Fullstack Web Developer (PHP/React)

Apart is looking for a Fullstack Web Developer to join its design and development studio in Mamer, Luxembourg. You’ll build websites and web applications, work directly with clients and designers, and take ownership from the first briefing through launch and beyond.

Responsibilities

• Turn client goals into digital solutions that drive meaningful change and deliver measurable results.

• Build responsive, accessible interfaces, backend features, APIs and integrations.

• Develop with PHP, Symfony, React, Next.js and TYPO3, including headless architectures.

• Review, test, maintain and improve applications, with attention to security, performance and maintainability.

• Use AI throughout your workflow, applying your own judgement and taking responsibility for the quality of what you ship.

Requirements

• Practical experience with PHP and Symfony, alongside proficiency in React, JavaScript, HTML and CSS.

• Ability to connect frontend and backend systems through well-designed APIs and integrations.

• Confidence working and communicating in English and French; Luxembourgish is an advantage.

• Curiosity, sound technical judgement and a willingness to challenge assumptions - including your own.

• Initiative, accountability and an enthusiasm for working closely with designers, developers and clients.

We welcome candidates at different seniority levels who bring practical skills and are ready to take on the responsibilities of the role. We’re curious to explore together in an interview how your experience and approach could fit.

How we think, build and work together

You don’t need prior TYPO3 experience - just curiosity and a willingness to get involved and become proficient. It’s a modern, reliable CMS built for complex projects at scale, with an excellent developer experience that rewards the time you invest in learning it.

AI is our co-pilot and sparring partner. Your expertise and judgement stay in the driver’s seat.

We value people who take pride in their craft and enjoy achieving great things together.

Key points

• Role: Fullstack development with meaningful technical ownership and direct client contact.

• Stack: PHP, Symfony, React and a strong TYPO3 focus; prior TYPO3 experience is not required.

• Mindset: Curious, hands-on, accountable and ambitious for the team.

• Opportunity: A small, approachable team, room to grow and flexible working hours.

• Terms: Full-time permanent contract (CDI), onsite in Mamer, Luxembourg. Immediate start sought.

Send your CV, examples of your work and a motivation letter to jobs@apart.lu. We’d love to hear what you’ve built, how you think and why you’d be a great fit for our team. Show us the person behind the technical skills: what motivates you, how you collaborate and what you’d bring to Apart.