Mobile Developer (Flutter)

Employee
Hybrid
Medior, Senior

Last updated: 5 May 2026

Do you have a passion for developing mobile apps in Flutter and Dart? Do you thrive when working on diverse projects and tackling challenging situations? Are you always willing to raise the bar just a little higher?
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What will you do as a Mobile Developer (Flutter) at ACA Group?

  • You develop innovative mobile applications using modern technologies
  • You build cross-platform apps with Flutter and Dart
  • You work within a scalable architecture using Clean Architecture and MVVM
  • You collaborate with clients to define functional and technical requirements
  • You contribute to improving development processes and best practices
  • You work in an Agile team and actively share feedback with colleagues
  • You ensure high standards in code quality, performance and security

Which skills do you need?

  • You have 3+ years of experience as a mobile developer, including Flutter/Dart
  • You have a strong passion for software development and clean design
  • You value code quality, performance, security and maintainability
  • You have an analytical mindset and attention to detail
  • You communicate clearly and bring a proactive, can-do attitude
  • You enjoy working in a team and exchanging feedback
  • You are flexible and willing to work partly on-site in Antwerp

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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Employer branding

Join our team as a Mobile Developer (Flutter)

 

Fill out the application form and let's talk.

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Streamlined connectivity for Renson’s remote apps

Renson, a manufacturer in the outdoor living and climate control sector, needed a centralized solution to manage patio covers, shading, lighting, heating, and air quality systems across diverse hardware and networks. ACA Group developed integrated control applications that ensured reliable connectivity and unified system management. During COVID-19, a CO₂ monitoring feature was delivered within two weeks, resulting in faster product innovation and improved indoor and outdoor environmental control.

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Streamlined connectivity for Renson’s remote apps

Renson, a manufacturer in the outdoor living and climate control sector, needed a centralized solution to manage patio covers, shading, lighting, heating, and air quality systems across diverse hardware and networks. ACA Group developed integrated control applications that ensured reliable connectivity and unified system management. During COVID-19, a CO₂ monitoring feature was delivered within two weeks, resulting in faster product innovation and improved indoor and outdoor environmental control.

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User-friendly City App for the city of Hasselt

Stad Hasselt, a local government organization in the public sector, wanted to improve digital access to municipal services through a mobile application but faced low usability and user adoption. ACA Group conducted UX audits and real-world user testing to optimize the app’s design and functionality. This resulted in a user-friendly mobile app with higher user satisfaction and improved accessibility to city services for residents.

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Logo City of Hasselt
User-friendly City App for the city of Hasselt

Stad Hasselt, a local government organization in the public sector, wanted to improve digital access to municipal services through a mobile application but faced low usability and user adoption. ACA Group conducted UX audits and real-world user testing to optimize the app’s design and functionality. This resulted in a user-friendly mobile app with higher user satisfaction and improved accessibility to city services for residents.

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One website for a better Digital Experience: Attentia’s #OneAttentia transformation

Attentia, a provider in the HR and wellbeing services sector, needed to improve its customer journey and online presence but faced challenges with fragmented digital platforms. ACA Group developed a unified, future-proof website by consolidating multiple systems into one platform. This integrated web solution enhances the #OneAttentia experience, enabling customers to easily access services while improving operational efficiency, brand consistency, and digital engagement.

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One website for a better Digital Experience: Attentia’s #OneAttentia transformation

Attentia, a provider in the HR and wellbeing services sector, needed to improve its customer journey and online presence but faced challenges with fragmented digital platforms. ACA Group developed a unified, future-proof website by consolidating multiple systems into one platform. This integrated web solution enhances the #OneAttentia experience, enabling customers to easily access services while improving operational efficiency, brand consistency, and digital engagement.

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Innovative AI model detects damaged pallets at Duvel Moortgat

Duvel Moortgat, a brewery in the food and beverage industry, needed a reliable way to detect damaged pallets to ensure safe and efficient beer transport. ACA Group implemented an AI-powered computer vision solution that automatically identifies pallet defects during logistics processes. This automated quality control system reduces manual inspection, lowers operational costs, and improves supply chain efficiency and product quality.

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Innovative AI model detects damaged pallets at Duvel Moortgat

Duvel Moortgat, a brewery in the food and beverage industry, needed a reliable way to detect damaged pallets to ensure safe and efficient beer transport. ACA Group implemented an AI-powered computer vision solution that automatically identifies pallet defects during logistics processes. This automated quality control system reduces manual inspection, lowers operational costs, and improves supply chain efficiency and product quality.

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Aqtor! streamlines scheduling with new planning tool

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From mobile charging app to data-driven innovation: our collaboration with MobilityPlus

MobilityPlus, a provider in the electric vehicle (EV) charging and sustainable mobility sector, needed to evolve from a standalone mobile app to a scalable digital platform but lacked a unified data and application architecture. ACA Group built an integrated digital ecosystem with a mobile app, web portal, Azure data platform, and AI-driven solutions. This enables data-driven operations, improves scalability, and supports business growth while strengthening MobilityPlus’ market position.

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Streamlined connectivity for Renson’s remote apps

Renson, a manufacturer in the outdoor living and climate control sector, needed a centralized solution to manage patio covers, shading, lighting, heating, and air quality systems across diverse hardware and networks. ACA Group developed integrated control applications that ensured reliable connectivity and unified system management. During COVID-19, a CO₂ monitoring feature was delivered within two weeks, resulting in faster product innovation and improved indoor and outdoor environmental control.

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Renson smart home app
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RENSON_logo_without slogan
Streamlined connectivity for Renson’s remote apps

Renson, a manufacturer in the outdoor living and climate control sector, needed a centralized solution to manage patio covers, shading, lighting, heating, and air quality systems across diverse hardware and networks. ACA Group developed integrated control applications that ensured reliable connectivity and unified system management. During COVID-19, a CO₂ monitoring feature was delivered within two weeks, resulting in faster product innovation and improved indoor and outdoor environmental control.

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Renson smart home app
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RENSON_logo_without slogan
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Stad Hasselt, a local government organization in the public sector, wanted to improve digital access to municipal services through a mobile application but faced low usability and user adoption. ACA Group conducted UX audits and real-world user testing to optimize the app’s design and functionality. This resulted in a user-friendly mobile app with higher user satisfaction and improved accessibility to city services for residents.

Read more
Overview picture of the city of Hasselt made with a drone
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Logo City of Hasselt
User-friendly City App for the city of Hasselt

Stad Hasselt, a local government organization in the public sector, wanted to improve digital access to municipal services through a mobile application but faced low usability and user adoption. ACA Group conducted UX audits and real-world user testing to optimize the app’s design and functionality. This resulted in a user-friendly mobile app with higher user satisfaction and improved accessibility to city services for residents.

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Overview picture of the city of Hasselt made with a drone
Overview picture of the city of Hasselt made with a drone
Logo City of Hasselt
One website for a better Digital Experience: Attentia’s #OneAttentia transformation

Attentia, a provider in the HR and wellbeing services sector, needed to improve its customer journey and online presence but faced challenges with fragmented digital platforms. ACA Group developed a unified, future-proof website by consolidating multiple systems into one platform. This integrated web solution enhances the #OneAttentia experience, enabling customers to easily access services while improving operational efficiency, brand consistency, and digital engagement.

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One website for a better Digital Experience: Attentia’s #OneAttentia transformation

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Duvel Moortgat, a brewery in the food and beverage industry, needed a reliable way to detect damaged pallets to ensure safe and efficient beer transport. ACA Group implemented an AI-powered computer vision solution that automatically identifies pallet defects during logistics processes. This automated quality control system reduces manual inspection, lowers operational costs, and improves supply chain efficiency and product quality.

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Innovative AI model detects damaged pallets at Duvel Moortgat

Duvel Moortgat, a brewery in the food and beverage industry, needed a reliable way to detect damaged pallets to ensure safe and efficient beer transport. ACA Group implemented an AI-powered computer vision solution that automatically identifies pallet defects during logistics processes. This automated quality control system reduces manual inspection, lowers operational costs, and improves supply chain efficiency and product quality.

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Aqtor! streamlines scheduling with new planning tool

Aqtor!, a provider of orthopedic and mobility aids in the healthcare sector, faced inefficiencies in appointment management that impacted operational productivity and patient experience. ACA Group implemented Planit, a digital planning and scheduling system, to streamline appointment workflows and optimize resource allocation. This solution reduces administrative workload, improves care quality, and increases customer satisfaction by enabling faster, more efficient patient service.

Read more
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Aqtor! streamlines scheduling with new planning tool

Aqtor!, a provider of orthopedic and mobility aids in the healthcare sector, faced inefficiencies in appointment management that impacted operational productivity and patient experience. ACA Group implemented Planit, a digital planning and scheduling system, to streamline appointment workflows and optimize resource allocation. This solution reduces administrative workload, improves care quality, and increases customer satisfaction by enabling faster, more efficient patient service.

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From mobile charging app to data-driven innovation: our collaboration with MobilityPlus

MobilityPlus, a provider in the electric vehicle (EV) charging and sustainable mobility sector, needed to evolve from a standalone mobile app to a scalable digital platform but lacked a unified data and application architecture. ACA Group built an integrated digital ecosystem with a mobile app, web portal, Azure data platform, and AI-driven solutions. This enables data-driven operations, improves scalability, and supports business growth while strengthening MobilityPlus’ market position.

Read more
ev charger
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From mobile charging app to data-driven innovation: our collaboration with MobilityPlus

MobilityPlus, a provider in the electric vehicle (EV) charging and sustainable mobility sector, needed to evolve from a standalone mobile app to a scalable digital platform but lacked a unified data and application architecture. ACA Group built an integrated digital ecosystem with a mobile app, web portal, Azure data platform, and AI-driven solutions. This enables data-driven operations, improves scalability, and supports business growth while strengthening MobilityPlus’ market position.

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