.NET Developer

Employee
Hybrid
Medior, Senior

Last updated: 25 June 2026

Are you a motivated and experienced .NET Developer? Do you long to grow in an ambitious organisation where you can bring your excellent skills and your technological passion to the table?
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What will you do as a .NET developer at ACA Group?

  • You take ownership of projects and develop stable, high-quality back-end solutions that exceed customer expectations
  • You design and build APIs using modern technologies and ensure maintainable, secure and high-performing architectures
  • You analyze technical challenges and translate them into scalable solutions
  • You support your team with technical insights, clear explanations and application design
  • You identify opportunities and think proactively with clients
  • You work in a hybrid setup, combining office work (Ghent or Antwerp) with remote work and occasional client visits

Which skills do you need?

  • You have strong knowledge of C#, .NET Core and the broader .NET ecosystem
  • You have a solid foundation in programming and software architecture
  • You have experience with cloud platforms (Azure, AWS or Google Cloud); certifications are a plus
  • You are familiar with message brokers such as Service Bus and have good database knowledge
  • You have experience with the Atlassian stack
  • You enjoy working in a team, share knowledge and explain complex topics clearly
  • You take responsibility, show leadership and communicate fluently in Dutch and English

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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The (unique) ACA company culture 💙

Step inside ACA and discover what it’s like to work with a group of passionate IT professionals who are always ready to collaborate, innovate and deliver exceptional results. If you’re looking to join a team that’s passionate about both technology and making customers happy, take a look at what makes ACA Group an awesome place to work.

The (unique) ACA company culture 💙

Step inside ACA and discover what it’s like to work with a group of passionate IT professionals who are always ready to collaborate, innovate and deliver exceptional results. If you’re looking to join a team that’s passionate about both technology and making customers happy, take a look at what makes ACA Group an awesome place to work.

The (unique) ACA company culture 💙

Step inside ACA and discover what it’s like to work with a group of passionate IT professionals who are always ready to collaborate, innovate and deliver exceptional results. If you’re looking to join a team that’s passionate about both technology and making customers happy, take a look at what makes ACA Group an awesome place to work.

The (unique) ACA company culture 💙

Step inside ACA and discover what it’s like to work with a group of passionate IT professionals who are always ready to collaborate, innovate and deliver exceptional results. If you’re looking to join a team that’s passionate about both technology and making customers happy, take a look at what makes ACA Group an awesome place to work.

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Join our team!

Fill out the application form and let's talk.

Open application

Does this job not quite fit? 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 jobs:

Customer cases

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! 

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.
OVAM_dossierdoolhof
OVAM_dossierdoolhof
OVAM-Leeuw-engels_groen-letteromtrek
OVAM, the Public Waste Agency of Flanders, faced operational inefficiencies due to legacy IT systems and manual processes in case management and field operations. ACA Group implemented multiple applications using OutSystems low-code technology, including a web-based case management system, a mobile inspection app, and an asbestos cost calculation tool. This approach automated workflows, improved data accuracy, and reduced administrative effort, enabling faster processes, scalable digital solutions, and cost-efficient digital transformation across the organization.
sustainability visual
sustainability visual
OVAM-Leeuw-engels_groen-letteromtrek
ACA Group, an international technology consultancy, faced fragmented onboarding processes across multiple offices, tools, and business units, creating inefficiencies for HR and inconsistent employee experiences. To address this, ACA Group developed N-ACA, a custom onboarding platform built with OutSystems low-code technology. The platform centralizes onboarding content, enables progress tracking, and standardizes workflows. This solution improved onboarding quality, reduced administrative workload for HR, and accelerated time-to-productivity for new employees.
rocket
rocket
ACA Group logo
Ecofix, a Belgian energy start-up, needed a complete digital platform to support its launch and offer transparent dynamic energy pricing. ACA Group delivered end-to-end digital product development, including branding, a mobile app, and a website, using Flutter for cross-platform development and Microsoft Azure Cloud for scalability and security. Delivered within weeks, this solution enabled rapid time-to-market, provided customers with real-time energy insights, and established a scalable digital foundation for Ecofix’s growth.
Ecofix
Ecofix
ecofix
Energie.be, a Belgian energy supplier, needed a scalable digital foundation to support its growth from start-up to scale-up while maintaining low-cost, transparent services. ACA Group partnered as a long-term digital partner, delivering custom software development, a website, customer and partner portals, and tools like a pricing comparison platform (Tariefcheck), supported by cloud and data expertise. This integrated digital strategy enabled rapid product development, streamlined operations, and supported Energie.be’s expansion in the competitive energy market.
energie bulb
energie bulb
logo energie.be-1
EBTS, a European roadside assistance provider for trucks and commercial vehicles, needed to improve the usability and scalability of its customer portal used by fleet managers to report incidents. While internal teams optimized the backend, ACA Group delivered a UX redesign and implemented a scalable design system for a white-label platform. This solution simplified user flows, accelerated incident reporting, and enabled faster customization for new clients, resulting in improved service efficiency and reduced development time.
blurred truck on road
blurred truck on road
ebts logo
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.
OVAM_dossierdoolhof
OVAM_dossierdoolhof
OVAM-Leeuw-engels_groen-letteromtrek
OVAM, the Public Waste Agency of Flanders, faced operational inefficiencies due to legacy IT systems and manual processes in case management and field operations. ACA Group implemented multiple applications using OutSystems low-code technology, including a web-based case management system, a mobile inspection app, and an asbestos cost calculation tool. This approach automated workflows, improved data accuracy, and reduced administrative effort, enabling faster processes, scalable digital solutions, and cost-efficient digital transformation across the organization.
sustainability visual
sustainability visual
OVAM-Leeuw-engels_groen-letteromtrek
ACA Group, an international technology consultancy, faced fragmented onboarding processes across multiple offices, tools, and business units, creating inefficiencies for HR and inconsistent employee experiences. To address this, ACA Group developed N-ACA, a custom onboarding platform built with OutSystems low-code technology. The platform centralizes onboarding content, enables progress tracking, and standardizes workflows. This solution improved onboarding quality, reduced administrative workload for HR, and accelerated time-to-productivity for new employees.
rocket
rocket
ACA Group logo
Ecofix, a Belgian energy start-up, needed a complete digital platform to support its launch and offer transparent dynamic energy pricing. ACA Group delivered end-to-end digital product development, including branding, a mobile app, and a website, using Flutter for cross-platform development and Microsoft Azure Cloud for scalability and security. Delivered within weeks, this solution enabled rapid time-to-market, provided customers with real-time energy insights, and established a scalable digital foundation for Ecofix’s growth.
Ecofix
Ecofix
ecofix
Energie.be, a Belgian energy supplier, needed a scalable digital foundation to support its growth from start-up to scale-up while maintaining low-cost, transparent services. ACA Group partnered as a long-term digital partner, delivering custom software development, a website, customer and partner portals, and tools like a pricing comparison platform (Tariefcheck), supported by cloud and data expertise. This integrated digital strategy enabled rapid product development, streamlined operations, and supported Energie.be’s expansion in the competitive energy market.
energie bulb
energie bulb
logo energie.be-1
EBTS, a European roadside assistance provider for trucks and commercial vehicles, needed to improve the usability and scalability of its customer portal used by fleet managers to report incidents. While internal teams optimized the backend, ACA Group delivered a UX redesign and implemented a scalable design system for a white-label platform. This solution simplified user flows, accelerated incident reporting, and enabled faster customization for new clients, resulting in improved service efficiency and reduced development time.
blurred truck on road
blurred truck on road
ebts logo
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