Senior Mendix Developer

• Senior Mendix Developer is responsible for designing, developing, and maintaining
• high-quality Mendix applications that align with business objectives and software
• development standards. This role combines strong technical expertise in Mendix with
• the ability to guide junior developers, collaborate with stakeholders, and drive best
• practices across the low-code application lifecycle.

Key Responsibilities

Application Development & Architecture

• Design, build, and deploy Mendix applications using best-practice architecture

and development patterns.

• Translate business requirements into scalable, maintainable, and high-quality

Mendix solutions.

• Develop complex domain models, microflows, nanoflows, workflows,

integrations, and UI components.

• Build custom components using java actions (written as per Java best practices

& company conventions)

• Design and implement robust Mendix security models (user roles, module roles,

• entity access, page access, microflow access) strictly adhering to the principle
• of least privilege and Mendix security best practices.

• Ensure application performance, scalability, reliability, and compliance with

enterprise performance standards.

• Conduct thorough code reviews to enforce quality, consistency, and

maintainability.

• Implement robust auditing, logging, and monitoring mechanisms while

• championing true DevOps, BizDevOps, and SecDevOps principles throughout
• the application lifecycle

• Build productized modules that are reusable in other apps and projects.
• Design and deliver robust Mendix mobile apps with emphasis on reliable offline

• synchronization, high performance, secure local data handling, custom native
• functionality, and streamlined iOS/Android build & deployment processes.

Integration & System Design

• Integrate Mendix applications with external systems via REST, SOAP, OData,

Kafka, databases, identity providers (OIDC, Azure AD), etc.

• Design highly modular and reusable components (modules, microflows,

nanoflows, snippets, document templates).

• Strong experience working with Mendix Building Blocks.
• Collaborate with enterprise architects, infrastructure teams, and system owners

to align solutions with the broader IT landscape.

• Lead technical discussions with external teams on security, network, and

infrastructure topics.

• Engage in detailed technical discussions regarding published/consumed APIs

(endpoints, versioning, authentication, rate limiting).

• Design, document, and publish APIs following REST/SOAP best practices.
• Strong documentation discipline: clean/readable code, comprehensive in-app

• documentation, and complete handover/technical delivery documents (e.g. LLD,
• API documentation..etc) for clients

Leadership & Collaboration

• Mentor and coach junior and Intermediate-level Mendix developers on best

practices and advanced techniques.

• Lead technical discussions, solution-design workshops, sprint planning, and

refinement sessions.

• Work closely with product owners, business analysts, and stakeholders to clarify

requirements, refine user stories, and define acceptance criteria.

• Promote and enforce Mendix development best practices and reusable

components.

• Provide accurate effort estimation for tasks, user stories, enhancements, and

bug resolutions.

Requirements

Required Skills & Qualifications

Technical Skills

• Mendix Advanced or Expert certification (Expert strongly preferred).
• 3+ years of experience developing Mendix applications.
• Delivered Mendix applications into production (at least 1 complex application).
• Expert-level knowledge of domain modeling, microflows, nanoflows, security

model, Java actions, JavaScript actions and Mendix best practices.

• Experience with Git-based development, CI/CD pipelines, and automated

deployments.

• Strong experience with REST/SOAP web services, API design and documentation

and API best practices.

• Proficient in leveraging AI tools (Copilot, Grok, ChatGPT, Maia) to accelerate

• development, debugging, documentation, design, and professional
• client/stakeholder communication.

• Proven ability to design and maintain comprehensive documentation (API, Low

Level Design…etc).

• Proficient in Microsoft Word and Excel for documentation and reporting

purposes.

• Strong Java and JavaScript proficiency for custom actions, debugging complex

logic, and performance optimization.

• Advanced SQL skills including writing and optimizing complex queries, joins, and

indexing.

• Hands-on experience with On-Premise environments and cloud environments

(Mendix Cloud, Azure, or OpenShift environments).

• Solid understanding of Mendix architecture, integrations, APIs, and security

concepts.

• Solid understanding of networking, certificates, firewalls, and proxy

configurations in enterprise contexts.

• Performed multiple Mendix Major upgrades
• Strong expertise in Mendix Mobile: offline/sync logic, performance optimization,

• security, secure mobile storage/encryption, and managing app builds, signing,
• and store distribution.

Soft Skills

• Excellent analytical and problem-solving skills – particularly for complex

• integration and performance issues under tight deadlines – while remaining calm
• and positive during high-pressure situations or crises.

• Excellent verbal and written communication skills; ability to write clear,

• professional client emails and documentation and conduct client-facing
• discussions.

• Strong stakeholder-management and facilitation skills for workshops and

requirement sessions.

• Thrives in agile/scaled-agile and waterfall environments; adept at managing

• scope, bridging customer expectations, and enforcing process in structured
• deliveries.

• Highly pro-active: identifies blockers, proposes solutions, and drives initiatives

when progress slows down or new opportunities arise

• Proven ability to work independently while leading technical workstreams.

Preferred Experience

• Previous experience leading Mendix development teams.
• Experience with Mendix tools such as QSM
• Hands-on experience with containerization (Docker, Kubernetes) and private

cloud Mendix deployments

• Participation in Mendix Capture the Flag (CTF) events or proven ability to

demonstrate Mendix security vulnerability concepts.