Experienced Mendix Developer with strong skills in Java and JavaScript, specializing in low-code application development and integration within agile environments.
Experience
5–10 yrs
Location
Brussel
On-site · Brussel, Belgium
Experience
5–10 yrs
Location
Brussel
On-site · Brussel, Belgium
The Brief
TITLE
Mendix developer
TYPE
Full-time
POSTED
Nov 13, 2026
JOB ID
01a13942
TITLE
Mendix developer
TYPE
Full-time
POSTED
Nov 13, 2026
JOB ID
01a13942
Role summary
Designs, builds and maintains business applications on the Mendix low-code platform within the company's environment. Work in agile, multidisciplinary teams alongside business analysts, UX/UI designers, testers and project managers, and apply the company's shared development principles so that applications stay consistent, maintainable and reusable across the Mendix portfolio.
Main tasks
Translate user stories and business requirements into working Mendix applications (domain models, flows, pages, security roles).
Build integrations with internal and external systems via APIs and database connectors, and implement single sign-on (SAML/OIDC).
Develop reusable modules, widgets and components in line with company standards, and contribute to a shared component library.
Apply secure-by-design practices, role-based access control and data protection requirements.
Build accessible interfaces that meet WCAG 2.1 AA.
Write unit and automated tests, take part in code reviews, and use the Mendix Quality Add-ons or equivalent to keep technical debt under control.
Support deployment, release management and third-level maintenance of applications in production.
Produce and maintain technical documentation.
Required qualifications and experience
At least 5 years of IT development experience, including at least 3 years hands-on with Mendix.
Mendix Advanced Developer certification (minimum).
Proven delivery of at least two Mendix applications into production, including integration with enterprise systems.
Experience with Mendix 10 or later, on-premises or private cloud deployment.
Working knowledge of Java and JavaScript for custom actions and widgets.
Experience working in Scrum or similar agile frameworks.
Assets
Mendix Expert certification.
Experience in an EU institution or public administration.
Experience with Mendix AI capabilities (e.g. GenAI connectors, Maia).
Languages
English at C1 level. French is an asset.
About the company
Phoenix Tech is a Belgium-based technology consulting and software development company dedicated to helping businesses innovate, scale, and succeed in the digital era.
We partner with startups, SMEs, and enterprises to transform ideas into powerful digital solutions through technology consulting, custom software development, cloud solutions, AI-powered applications, IT staffing, and digital transformation services.
Our mission is simple— deliver technology that creates measurable business value. Whether you're building a new product, modernizing legacy systems, expanding your engineering capacity, or accelerating your digital transformation journey, Phoenix Tech provides the expertise, talent, and execution needed to achieve your goals.
At Phoenix Tech, we combine strategic thinking with hands-on technical excellence. Our team works closely with clients to understand their business challenges and develop scalable, secure, and future-ready solutions that drive growth, efficiency, and competitive advantage.
What We Deliver
* Custom Software Development
* Web & Mobile Application Development
* Cloud & DevOps Solutions
* AI & Data-Driven Applications
* IT Consulting & Digital Transformation
* Technology Talent & Team Augmentation
* Enterprise System Integration
* Product Development & Innovation
Why Clients Choose Phoenix Tech?
✔ Business-focused technology solutions
✔ Agile and transparent delivery approach
✔ Access to global technology talent
✔ Scalable engagement models
✔ Commitment to quality, security, and innovation
✔ Long-term partnership mindset
At Phoenix Tech, we don't just build software—we help businesses unlock new opportunities, solve complex challenges, and create lasting digital impact.
Email us at: [email protected]