Senior Mendix Developer - 10831858

Itproposal; Amsterdam; On-site; EUR 83,000 - 152,000; Full time

Job summary

Itproposal is seeking a Senior Mendix Developer to join our Amsterdam team. The role focuses on building scalable Mendix applications, leveraging Mendix Studio Pro, and delivering secure, high‑performing solutions for business stakeholders in an Agile setup.

The ideal candidate has strong Mendix experience, hands-on microflows/nanoflows expertise, and fluency in Dutch. Certification as Mendix Expert is mandatory, and collaboration with architects and other developers is essential.

Qualifications

• 5+ years of overall IT experience.
• Experience as a Mendix Developer with hands-on work in Mendix Studio Pro.
• Strong knowledge of Mendix microflows and nanoflows.
• Experience in designing Mendix domain models and UI development.
• Experience with REST and SOAP integrations.
• Familiarity with Agile/Scrum delivery environments.
• Fluent Dutch, both spoken and written – mandatory.
• Mendix Expert Certification – mandatory.

Responsibilities

• Design, develop, and maintain Mendix enterprise applications.
• Work extensively with Mendix Studio Pro.
• Develop and maintain complex microflows and nanoflows.
• Design scalable Mendix domain models and UI components.
• Integrate Mendix with external systems via REST and SOAP.
• Ensure security, performance, and maintainability.

Skills

Mendix

Microflows

Nanoflows

Domain modelling

Mendix UI

REST

SOAP

Agile/Scrum

Dutch language

Tools

Mendix Studio Pro

REST APIs

SOAP Web Services

Mendix UI

Job description

Senior Mendix Developer

Requirement ID: 10831858
Location: Amsterdam, Netherlands
Start Date: ASAP
Duration: 6 Months
Experience: 5+ years overall IT experience
Employment Type: Contract
Language: Fluent Dutch & English
Certification: Mendix Expert – Mandatory

About the Role

We are looking for an experienced Senior Mendix Developer to join a development team in Amsterdam. The ideal candidate will have strong hands‑on experience with Mendix Studio Pro and a proven track record of developing scalable, secure, and high‑performing applications using the Mendix platform.

You will be responsible for designing, developing, integrating, testing, and maintaining Mendix applications while working closely with business stakeholders, architects, and other technical teams within an Agile Scrum environment.

Key Responsibilities

• Design, develop, and maintain enterprise applications using Mendix.
• Work extensively with Mendix Studio Pro.
• Develop and maintain complex microflows and nanoflows.
• Design effective and scalable Mendix domain models.
• Develop responsive and user‑friendly Mendix UI components.
• Design and implement integrations with external systems using:
  • REST APIs
  • SOAP web services
• Analyze business and technical requirements and translate them into Mendix solutions.
• Ensure applications meet required standards for security, performance, scalability, and maintainability.
• Troubleshoot and resolve application defects and production issues.
• Participate in code reviews, testing, deployment, and continuous improvement activities.
• Collaborate with solution architects, business analysts, testers, and other developers.
• Participate in Agile Scrum ceremonies, including sprint planning, daily stand‑ups, reviews, and retrospectives.
• Contribute to technical documentation and knowledge sharing.
• Follow Mendix development best practices and platform standards.

Essential Skills & Experience

• 5+ years of overall IT experience.
• Strong hands‑on experience as a Mendix Developer.
• Extensive experience with Mendix Studio Pro.
• Strong knowledge of:
  • Microflows
  • Nanoflows
  • Domain modelling
  • Mendix UI development
• Proven experience developing and maintaining enterprise Mendix applications.
• Hands‑on experience with REST and SOAP integrations.
• Good understanding of:
  • Application security
  • Performance optimization
  • Scalability
  • Application architecture
• Experience working in Agile/Scrum delivery environments.
• Fluent Dutch, both spoken and written – mandatory.
• Mendix Expert Certification – mandatory.

Technical Competencies

• Mendix
• Mendix Studio Pro
• Microflows
• Nanoflows
• Domain Modelling
• Mendix UI
• REST APIs
• SOAP Web Services
• Application Integration
• Application Security
• Performance Optimization
• Scalability
• Agile / Scrum

Candidate Profile

The ideal candidate is a senior-level Mendix professional who can work independently and take ownership of development activities from requirements through deployment and support.

You should combine strong technical knowledge of the Mendix platform with an understanding of enterprise application development, integrations, security, and performance. Excellent communication skills are essential, particularly given the mandatory Dutch language requirement.

Contract Details

Role: Senior Mendix Developer
Requirement ID: 10831858
Location: Amsterdam, Netherlands
Start Date: ASAP
Duration: 6 months
Experience: 5+ years overall IT experience
Language: Fluent Dutch & English
Certification: Mendix Expert – Mandatory
Employment Type: Contractg