Development & Testing
This is what you'll work on
At Sopra Steria, we unburden our clients by taking full ownership of the (continued) development and maintenance of their applications. We also think and help proactively outside the scope of the assignment. This is how we create long-term relationships and add maximum value to them.
Our developers and testers know all about modern tools and methods such as DevOps. But equally important are strong soft skills: the ability to work together, clear communication and coming to the right decisions together. Our training opportunities ensure that you can grow in all areas.
Do you want to work for large customers - such as industries, governments or financial organisations - on interesting projects that look good on your CV? Then you are guaranteed to find your next challenge at Sopra Steria.
Would you love to be part of this team as
>> a Developer?
Some developers prefer to dive deep into the code, with full focus on the details, while others like to think about smart solutions to complex issues or elevate colleagues to the next level. What do they have in common? A DevOps mindset, an SRE approach and a passion for technology. They write robust code and guarantee the quality, safety and continuity of software. They remain curious, follow the latest innovations closely and master new techniques quickly. A strong team needs all these qualities - and so do we.
>> a Tester?
Testers come in all shapes and sizes - whether you motivate teams to embed quality in every phase, enjoy diving into code to automate test cases, or test applications for speed and scalability. With us, you get the space to develop broadly or specialise.
Convinced? Become our colleague and unlock your potential at Sopra Steria!
Explore the highlights that shape our recruitment
Mysteria is Sopra Steria’s latest Development & Testing hiring campaign
This multi-level challenge is designed for developers and creative minds who love solving
puzzles and thinking outside the box. It’s not just a test of skill; it’s a glimpse into the kind of curious and ambitious minds that thrive here.
If this is your kind of challenge, look no further!
Mysteria Masters: how to think and work like a developer
Our latest hiring campaign reveals the mindset behind effective development work, inspired by the logic and curiosity at the heart of our Mysteria. Dive into our latest video series where our Mysteria Masters answer real questions from Reddit. Or, if you would like to delve even deeper, our whitepaper “Insights from 5 Mysteria Masters” explores how clear thinking and strong engineering habits support real project work. Step into the world behind Mysteria and explore what it truly means to think like a developer.
Meet the Mysteria MastersWhat do our colleagues think?
Amandine Van Grunderbeeck, Full Stack Developer
What are our colleagues working on?
Rise above any high-stakes challenge
Meet us at events
Java Jam 2025: official aftermovie
Of interest to you
Teaser
People@SopraSteriaContent Type
TestimonialPublish date
Jun 30, 2026
Summary
Agentic development is the shift from using AI as a coding assistant to working with AI as an autonomous teammate that can plan, execute and refine complex tasks. For the past thre
Teaser
Life at Sopra SteriaContent Type
BlogPublish date
Jun 17, 2026
Summary
When you think of the 20 km of Brussels, you also think of Johan Verckens, the two go together as naturally as fish and chips, bangers and mash, or strawberries and cream. This ye
Teaser
ExpertiseContent Type
BlogPublish date
Jun 4, 2026
Summary
Market Partner Energy & Utilities The energy and utilities sector is facing major changes. According to Flora Cuvelier, Market Partner Energy & Utilities at Sopra Steria, this calls
Teaser
Life at Sopra SteriaContent Type
TestimonialPublish date
May 4, 2026
Summary
Personal growth rarely follows a neat or predictable path. It often comes from trying things out, making mistakes and gradually finding confidence through practice. For Maxime Delacroix
Teaser
EventsContent Type
EventsPublish date
Apr 22, 2026
Summary
📅 Date: 18 June 2026⏰ Start time and end time: 17:00 to 22:30 🌍 Time zone: CEST📍 Location: Sopra Steria HQ Nieuwegein, Ringwade 1 Register here What’s the event
Teaser
Culture and valuesContent Type
BlogPublish date
Apr 13, 2026
Summary
‘Internet Safe & Fun’ workshops for safer internet use among children How do you make children aware of the dangers of the internet and social media? Several Belgian colleag
Teaser
Life at Sopra SteriaContent Type
BlogPublish date
Mar 17, 2026
Summary
Welcome to our Project POV series, created to give an inside look at the meaningful projects our Sopra Steria colleagues bring to life. In this edition, Sofie Van Opstal reflects on her fifteen-ye
Teaser
ExpertiseContent Type
BlogPublish date
Mar 5, 2026
Summary
Principal Expert Data & AI The world of data and AI is evolving at lightning speed. Organisations feel the urgency to do something with AI, but often struggle with where to start. An
Teaser
EventsContent Type
EventsPublish date
Mar 3, 2026
Summary
📅 Date: 24 and 25 April 2026⏰ Start time and end time: 09:00 to 17:30 🌍 Time zone: The Netherlands (GMT+1)📍Location: RAI Amsterdam, The Netherlands The Nationale Carrièrebeurs is
Teaser
RecruitmentContent Type
EventsPublish date
Feb 24, 2026
Summary
📅 Date: March, 10 & 11 2026⏰ Start time and end time: 09:00–18:45🌍 Time zone: The Netherlands (GMT+1)📍Location: Jaarbeurs Utrecht, The Netherlands Future Tech is a leading techno