Full-Stack Developer

About 3P:

3P is a software specialist serving the public sector. As a fast-growing company, 3P has quickly distinguished itself by offering a comprehensive range of solutions specifically tailored to the needs of public sector organizations

We’re looking for a Senior Full-Stack Developer who can balance strong technical craftsmanship with architectural thinking, and who’s eager to shape the core foundation of our next-generation products.

You’ll be at the heart of the transformation — designing, developing, and delivering code that moves the mission forward every day.

What you'll do:

• Design and build core features of our new web platform from the ground up.
• Collaborate with backend, frontend, DevOps, and QA teams to deliver seamless migration of features and data.
• Translate complex business logic from the client application into clean, efficient, scalable web architecture.
• Work with product managers and UX designers to create elegant, intuitive interfaces.
• Contribute to technical architecture discussions, and help define standards, tools, and frameworks.
• Ensure code quality, performance, and security across the stack.
• Mentor junior developers and contribute to a culture of technical excellence.
• Experiment, optimize, and continuously push for improvement in both product and process.

• 5+ years of experience in full-stack software development.
• Deep proficiency in modern JavaScript frameworks (React, Vue, or Angular) and backend technologies (.NET & Node.js).
• Experience in API design, microservices, and REST or GraphQL architectures.
• Solid understanding of cloud environments (AWS, Azure, or GCP) and DevOps practices (CI/CD, containers, etc.).
• A strong sense of ownership, attention to detail, and pride in building high-performing systems.
• Excellent collaboration skills — able to work closely with designers, PMs, and fellow engineers.
• You enjoy working in cross-functional teams and are willing to come to our office in Kontich at least one to two days per week.
• Your native language is Dutch or French, and you are also highly proficient in English.

Nice to have:

• Experience in migration projects or legacy modernization.
• Background in data modeling and database optimization (SQL/NoSQL).
• Familiarity with TypeScript.
• Interest in performance optimization and front-end architecture.
• You’ve built something end-to-end — from prototype to production.

You will join an ambitious, fast-growing company with a young corporate culture and an incredibly enjoyable working environment.

3P has a long-standing tradition of attracting only top-tier talent in order to deliver impeccable service to its demanding clients.

In return, 3P offers you an exciting role with a high degree of autonomy, a permanent full-time contract, and an attractive above-market salary package including a company car, laptop, mobile phone, group insurance, pension plan, meal vouchers, hospitalization insurance, numerous team-building activities, and more.

If you love solving complex technical problems, crafting elegant solutions, and working on products that matter — we’d love to meet you!