(Senior) Principal Mendix Developer
Key Skills
Job Description
Excited to lead teams and architect Mendix solutions that are scalable, future-ready and make a real difference? At Valcon, we help organisations across Europe become fit for the future – combining consulting, data and technology to realise real transformation. We work end-to-end: from boardroom strategy to concrete implementation on the work floor. Our approach is pragmatic, fast and collaborative. No buzzwords, just results. Our culture is defined by ownership, entrepreneurship and continuous learning. We believe in growing together – through mentorship, trust and the freedom to shape your own path. We offer flexibility, challenge, and the opportunity to work on projects that matter. You’ll join our fast-growing Low-Code capability, with over 100 Mendix professionals across Europe – including 26 experts and 3 MVPs in the Netherlands alone. Our team works on high-impact projects for clients like IND/COA, Prorail, Defensie, BAM, Heineken with a strong focus on collaboration, quality and long-term solutions. Many of our projects are international – such as our recent engagement in Denmark, where our hybrid team (NL, DK, KR) delivers scalable solutions from design to delivery. Whether you want to specialise, coach others or lead engagements: you’ll find the space and support to grow. Tasks What will you do? As a (Senior) Principal Mendix Consultant, you bring together strategic thinking, platform expertise and strong leadership. You’ll lead multidisciplinary project or DevOps teams with full end-to-end ownership – from uncovering client needs to delivering scalable, future-ready applications. You take the lead in workshops, architecture and design decisions, translating complex business challenges into impactful IT-solutions – ranging from mobile and workflow apps to data-driven and integrated platforms. Increasingly, you’ll work on solutions that leverage AI, smart automation and advanced integrations to unlock new business value. Beyond delivery, you’ll play a key role in shaping our Low-Code capability. You help scale teams, raise engineering standards, and contribute to strategy, talent development and internal best practices. As a technical lead, you’re also actively involved in pre-sales, shaping proposals and leading proof-of-concepts for new clients. Depending on your interests, you can further grow towards strategic client ownership, technical depth or mentoring responsibilities – always with the freedom to shape your own path. Among your responsibilities will be the following: Designing, developing and testing innovative Mendix solutions in an agile way. Leading multidisciplinary teams and acting as technical lead in delivery projects: guiding architecture, workshops, design decisions, and quality Leading and coaching multiple Mendix teams, sometimes across different clients and domains. Tackling complex technical challenges and shaping long-term platform strategies. Coaching developers and consultants to grow their skills and confidence with the Mendix platform. Supporting pre-sales activities and helping shape client proposals and proof-of-concepts. Strengthening our Low-Code capability through improved standards, best practices and strategic team development. Requirements Experience: A completed Bachelor’s, Master’s or technical HBO degree in Computer Science, Technology, Engineering, Econometrics, Mathematics or a related field. At least 4 years of working experience as Mendix specialist/application developer and Mendix Advanced Developer certification. Nice to have: Mendix Expert Developer Certification and/or a specialisation in a domain like UI/UX, Architecture or custom (react/java) development. Fluent in Dutch and English Located in The Netherlands Benefits What do we offer you? Personal development: a tailor-made growth path with training, courses, certification and mentoring by experienced colleagues. An innovative work environment: collaborate with a team of experts pushing boundaries in data, technology, and consulting. Immediate impact and responsibility: you’ll make a difference for our clients from day one and are entrusted with responsibilities that challenge you to bring the best out of yourself. Inspiring work culture: a supportive, flexible, and no-nonsense environment that fosters your growth and fully allows you to be yourself. Additionally, we offer: Competitive employment benefits, including bonuses and expense allowance. A company car or mobility budget. A workplace that prioritizes and respects your work-life balance (for example by offering you the option of taking a sabbatical or expand the amount of holidays per year). An affordable sports membership that allows you to participate in 50 different sports offered by over 10,000 partners. The opportunity to work remotely from abroad for 10 days per year. A vibrant community that organizes both professional and social events. Ready to apply? Has the above sparked your interest and are you ready to join our innovative and impactful environment? And do our core values – Together, Joy, Curious, Can do, and Integrity – resonate with you? Our recruitment team would be happy to hear from you! Please apply directly to schedule a coffee meeting at our office first.
Core Responsibilities
Lead multidisciplinary Mendix teams and own delivery end to end, from understanding client needs through architecture, design, development, and testing of scalable applications. Coach teams, strengthen Low-Code standards and strategy, and contribute to pre-sales, proposals, and proof-of-concepts.
Requirements
A completed bachelor's, master's, or technical higher professional education degree in a relevant field is required, along with at least four years of Mendix specialist or application development experience and Mendix Advanced Developer certification. Fluency in Dutch and English and residence in the Netherlands are required; Mendix Expert Developer certification or a relevant specialization is an advantage.
Benefits
- Training and Courses
- Professional Certifications
- Mentoring
- Bonuses
- Expense Allowance
- Company Car or Mobility Budget
- Work-Life Balance
- Sabbatical Option
- Additional Holidays
- Sports Membership
- Remote Work from Abroad for 10 Days per Year
- Professional and Social Events
About Valcon
Industry: Business Consulting and Services
Company size: 1,001-5,000 employees
Every organisation is under pressure to move faster, become more productive, and better serve its customers. The need for transformation has never been greater. Yet most transformations don’t fail because of a lack of strategy. They fail because change never becomes part of everyday work. Ideas are easy. Making them work is hard. Technology is never the goal. Better organisations are. At Valcon, we believe technology, data and AI only create lasting business value when they empower people. By helping them make better decisions, remove repetitive work and focus on what matters most, we unlock real productivity. That belief shapes everything we do. We don’t stop at advice or technology alone. We work side by side with our clients to turn ambition into reality. Combining deep expertise in consulting, data & AI, and technology with a pragmatic, hands-on approach, we design, build, and embed change until it becomes part of the organisation itself. Because lasting transformation isn’t something you deliver. It’s something you build together. The result is more than successful implementation. It’s technology that people trust. Teams that take ownership. Processes that continue to improve. Organisations that are ready for whatever comes next. Not because they adopted the latest technology, but because their people were empowered to make it work. Valcon. Implementing your future.