---
title: 'Senior Integration Engineer – AppDev at Mendix'
canonical: 'https://feeny.ai/job/senior-integration-engineer-appdev-mendix-rotterdam-sg5qyp2txk0c'
type: 'job'
last_seen: '2026-09-19'
---

# Senior Integration Engineer – AppDev at Mendix

- **Company:** Mendix
- **Location:** Rotterdam, Netherlands
- **Employment:** full-time
- **Work type:** hybrid
- **Posted:** 2026-06-08
- **Last confirmed live:** 2026-09-19
- **Apply:** https://jobs.lever.co/mendix/ccd956e6-54be-4f55-9e55-7f6ece55b36c

## Job description

## About Mendix

Mendix is on a mission to fundamentally reinvent the way applications are built by abstracting the process and enabling everyone who has a stake in an enterprise's digital future—business people and analysts, web developers, software engineers, even CEOs—to significantly participate, thereby crafting better applications faster. Our goal is simply to build the future of software development. Position Overview As a Senior Integration Engineer – AppDev, you will help define the systems, tools, and architecture that form the foundation of our platform, building excellent end-user experiences from design time to runtime. Your work will have a direct impact on improving efficiency and the ability to innovate across the development community. You'll help us build a future where applications are built with collaboration across organizations. If challenge motivates you and you are courageous in taking up topics that others won't touch, you will feel in your element in this role. We expect that you bring the technical know-how, take the initiative where needed, and empower others to join your journey.

## Key Responsibilities

- Define and evolve the systems, tools, and architecture that power our platform
- Drive technical innovation and lead efforts to improve developer productivity and experience
- Collaborate across teams to design solutions that enable seamless application development and deployment
- Demonstrate technical expertise and leadership with a pragmatic, can-do attitude
- Architect integration solutions that support large datasets and data lakes with scalability in mind
- Mentor and empower cross-functional teams to deliver high-impact technical outcomes

## Qualifications

- 7+ years of proven experience in platform development, frameworks, or development tooling
- Proficiency in C# and TypeScript, with hands-on experience in React and React Native
- Demonstrated expertise in integration technologies, specifically large datasets, data lakes, SPARQL, and GraphQL
- Proven technical track record with demonstrated expertise in building scalable systems
- Strong leadership capabilities and ability to empower cross-functional teams
- Experience handling sophisticated problems and inspiring organizational change

## Preferred

- Passion for helping developers reach their next level of efficiency
- Motivation by the AI-future and emerging technologies
- Ability to maintain a balanced rhythm by delivering results while continuously investing in built-in quality systems
- Goal-oriented attitude with a "getting things done" approach

## Why Us

At Siemens Software, flexibility is how we work—hybrid by default, built on trust and autonomy. Together, 30,000 people across more than 200 countries build technology that shapes the real world. You'll grow through real projects, strong technical peers, and global mobility, backed by the scale and benefits of an industrial software leader. We're committed to equality and inclusion, and we hire based on merit, skills, and impact. Bring your curiosity and creativity and help us shape tomorrow! Our Benefits & Rewards The salary range for this position is €69,100 to €110,600 and this role is eligible to earn incentive compensation. The actual compensation offered is based on the successful candidate's job-related skills, experience, and relevant education/training. Siemens offers health and wellness benefits to employees; you can access the benefits available in your country via the link: https://jobs.sw.siemens.com/benefits/ Our Commitment to Equity and Inclusion We value your unique identity and perspective. We are fully committed to providing equitable opportunities and building a workplace that reflects the diversity of society, while ensuring that we attract the best talent based on qualifications, skills, and experiences. We welcome you to bring your authentic self and transform the everyday with us. Siemens Software. Transform the Everyday #LI-Hybrid #SaaS

## About Mendix

## Company Overview
- **One-liner**: Mendix provides a leading low-code application development platform that enables enterprises to build and deploy custom software applications rapidly, bridging the gap between business and IT.
- **Entity Type**: Private (subsidiary of Siemens AG)
- **Headquarters**: Rotterdam, Netherlands (Global HQ) & Boston, Massachusetts, USA (US HQ)
- **Founded**: 2005
- **Founders**: Derek Roos, Roald Kruit, Arno Burggraaf

## Core Business
- **Primary Industry**: Enterprise Software / Low-Code Application Development Platform
- **Target Customers**: Large enterprises, Independent Software Vendors (ISVs), and SMBs across various sectors (manufacturing, logistics, finance, etc.). Primarily B2B.
- **Mission**: To continuously evolve and empower companies to take control of their digital journey by providing the tools, resources, and services necessary for faster and better software development. As part of Siemens' Intelligence Center X, the goal is to enable a hybrid workforce where people and AI agents work together.

## Products & Services
- **Mendix Platform (Low-Code)**: The core product; a visual, model-driven development environment that allows users to build web and mobile applications with drag-and-drop functionality, pre-built components, and full-stack capabilities. Includes features for collaboration, AI-assisted development (AI Studio), and lifecycle management.
- **Mendix for Private Cloud**: A dedicated, single-tenant deployment option for customers with strict security, compliance, or data residency requirements.
- **Mendix Cloud**: The public cloud offering, providing a resilient, scalable, and secure hosting environment managed by Mendix.
- **Marketplace**: A curated library of pre-built connectors, modules, widgets, and templates to accelerate development.
- **Mendix Academy**: A comprehensive suite of training materials, learning paths, and certification programs to upskill developers and business users.
- **Graph Studio**: A tool for modeling and managing business domain models, data, and knowledge graphs, enabling a shared context for applications and AI agents.

## Market Standing
- **Valuation/Market Cap**: Not publicly available (Subsidiary of Siemens AG; acquisition price was ~$700M in 2018).
- **Key Metric (Funding & Revenue)**: Acquired by Siemens in 2018 for approximately €600 million ($700 million). Annual revenue is not publicly disclosed, but the company operates as a key growth engine within Siemens' Digital Industries software division.
- **Notable Investors/Partners**: Siemens AG (parent company); Strategic partners include Amazon Web Services (AWS).
- **Growth Signals**:
    - **Headcount**: Grew to over 1,100 employees in 2020 and now has over 1,400 employees globally, indicating strong post-acquisition growth.
    - **Industry Recognition**: Named a 9x leader in the Gartner® Magic Quadrant™ for Low-Code Application Development (2025).
    - **Product & Market Expansion**: Expanded into India, Australia, Singapore, and China in the last few years.
    - **Siemens Integration**: Became a core component of Siemens' new "Intelligence Center X" in 2026, positioning it at the center of Siemens' industrial AI and agentic software strategy.

## Competitive Advantages
- **Enterprise Focus & Backing**: Unlike many low-code platforms, Mendix is built for complex enterprise needs (security, scalability, governance) and is backed by the financial and industrial clout of Siemens (a $100B+ technology conglomerate).
- **“Two-Speed IT” / Citizen Developer Enablement**: Allows professional developers to build at high speed while enabling "citizen developers" (business users) to co-create applications, bridging the IT-business gap effectively.
- **Platform Maturity & Ecosystem**: 20 years of development have resulted in a mature, feature-rich platform with a large marketplace and strong partner network.
- **Integration with Siemens Xcelerator**: Deep integration with Siemens' industrial software portfolio (digital twins, PLM, MES) provides a unique value proposition in the manufacturing and engineering space.

## Strategic Focus
- **Agentic Enterprise**: The primary focus is on enabling the "agentic enterprise" through Siemens' Intelligence Center X. Mendix is being used to build applications where AI agents and human workers collaborate with shared context and orchestration.
- **AI-Powered Development**: Deepening the integration of AI/ML into the development platform itself (e.g., AI Studio) to automate testing, code generation, and data modeling.
- **Low-Code for Everything**: Expanding the use of low-code into new domains like engineering, manufacturing, supply chain, and quality management, not just traditional business apps.
- **Global Expansion**: Continuing to grow its presence, particularly in the Asia-Pacific region.

## Why Work Here
- **Innovation & Impact**: Work on a cutting-edge, industry-leading platform that is central to Siemens' digitalization strategy. Employees have a direct impact on how enterprises of all sizes solve real-world problems.
- **Career Growth**: As a growing subsidiary of a global powerhouse, there are ample opportunities for internal mobility, skill development, and career progression across both Mendix and Siemens.
- **Hybrid & Flexible Culture**: Mendix offers a hybrid working model where employees can choose to work remotely, from one of their offices, or a mix of both. Flexible paid time off is also a standard benefit.
- **Global Team**: Join a diverse team of over 1,400 people across offices in Rotterdam, Boston, London, Frankfurt, Singapore, and more.
- **Generous Benefits Package**: Includes competitive benefits such as medical, dental, vision coverage, 401k matching (US), wellness benefits, and Siemens employee discounts.
- **Inclusivity**: The company is explicitly focused on hiring from diverse backgrounds to create products that serve a global audience.

## Sources
1. [mendix.com (Company Page)](https://www.mendix.com/company/)
2. [mendix.com (Careers Page)](https://www.mendix.com/careers/)
3. [jobs.lever.co (Mendix Careers)](https://jobs.lever.co/mendix)
4. [siemens.com (Application Development Platform)](https://www.siemens.com/en-us/solutions/application-development-platform/)

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