Mobile Developer

Employee
Hybrid
Medior, Senior

Last updated: 22 October 2026

Do you have a passion for developing mobile apps in React Native? Do you thrive on working on different projects and tackling challenging situations? Are you willing to set the bar just a little higher?
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Titel H2

  • You design, build, and optimize scalable data pipelines on Databricks
  • You establish standards and best practices for the competence center
  • You build and coach a team of Data Engineers
  • You ensure data quality, security, and performance across projects
  • You translate complex data sources into actionable insights
  • You act as a technical sparring partner for clients

H2 - Quick nav titles

  • You have strong knowledge of SQL and Python
  • You have experience with data warehousing and/or lakehouse environments
  • You have hands-on experience with Databricks
  • You are familiar with Azure (Storage, Key Vaults, Function Apps)
  • You have experience designing scalable data architectures
  • You have initial experience in coaching or mentoring others

Why join ACA Group?

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Competitive & flexible package

A strong salary package with car, cafeteria plan, insurance, mobility budget, bonus & more.

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People-first culture

A warm, supportive environment where collaboration, trust and openness come first.

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Growth opportunities

Continuous learning, coaching and the freedom to shape your own career path.

Your journey to joining us 🚀

Our application process in 5 steps

Your journey to joining us 🚀

Our application process in 5 steps

Hit that "Apply" button and fill out our application form to start the process.

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Join our team as a Databricks Tech Lead

Fill out the application form and let's talk.

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Does this job not quite fit you? No worries!

If you are passionate about what we do and think you could be a great addition to our team, we'd love to hear from you! We are always looking for talented people who are eager to contribute, collaborate and grow. So even if there’s no role that matches right now, don’t hesitate to get in touch.

Or check out our related vacancies

Case studies

Some of our projects in the spotlight

With more than 100 happy customers, we help organizations work faster, better and more efficiently. 
Curious about what we’ve achieved? Take a look our projects and see the impact we have made for our clients! 

How CM secured its new Atlassian Cloud with Azure Entra ID

CM, a Belgian health insurer, migrated its Atlassian environment from Data Center to Cloud, with integration into Azure Entra ID as a requirement. The technical integration through Atlassian Guard was easy to set up. The real challenge was operational: deciding in which platform licences, groups and permissions are managed. ACA Group listed the decisions to make, guided and advised CM, and made sure all stakeholders were informed and aligned. The result: licences managed in Azure Entra ID, permissions in Atlassian groups, and an enterprise-grade identity and security solution with clearly defined roles and responsibilities.

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Quick and user-friendly electronic patient files for Jessa Ziekenhuis

Jessa Ziekenhuis, a hospital in the healthcare sector, was struggling with C2M: outdated Electronic Health Records software with rising maintenance costs, growing unavailability and a stalled feature backlog. Together with ACA Group, the hospital built GEMS (Global Electronic Medical System) on the ACA Platform, with a joint development team and a strong focus on UX. After a phased rollout, GEMS fully replaced C2M by March 2018. It now serves about 2,500 users every day, with fast response times and no unplanned downtime.

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How Stellantis moved 150.000 Jira issues to the cloud, without downtime

When Stellantis  inherited an outdated Jira Server environment, simply moving everything to the cloud was not the answer. Years of duplicate fields, inconsistent workflows and legacy configuration would have moved with it. They wanted something better: a clean Jira Cloud environment without losing years of valuable history or disrupting its teams.

Together with ACA Group and Exalate, Stellantis migrated around 150.000 Jira issues in just 25 days, while cleaning up and restructuring its data along the way. 

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80+ applications, 1 future-proof cloud platform: a major Flemish government organization migrates to Microsoft Azure
Until mid-2024, a major Flemish government organization ran its operations from an extensive on-premise environment that was reaching its limits: outdated hardware, tightening security requirements, and little visibility into IT costs. ACA Group delivered a large-scale migration project, bringing more than 80 applications to Microsoft Azure-cloud with minimal downtime. The result: a safer, scalable, and fully transparent platform ready for tomorrow's innovations.
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A digital roadmap for the next growth phase of VIAS institute
VIAS institute wanted to reduce its reliance on government-funded projects by developing scalable digital products for new B2B and B2C markets. ACA Group conducted market research, stakeholder workshops and business case validation to create a strategic digital roadmap with five value streams. The roadmap provides VIAS with clear investment priorities and a solid foundation for sustainable digital product development.
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Goodbye, paper maze! We developed the Gebouwenpas, a single digital platform that brings together all real estate data
The Flemish government (public sector) faced fragmented real estate data spread across multiple agencies, making it difficult for citizens and stakeholders to access certificates, permits, and reports. ACA Group developed the Gebouwenpas, a scalable digital platform built on Liferay DXP with Spring Boot and Angular, centralising all building data into a single digital passport. Using an agile Scrum and Kanban approach, the solution delivers clear insights, secure access, and a future-proof system for both residential and non-residential properties.
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