Senior Mendix Developer

SSC HR Solutions; Jeddah; On-site; SAR 279,000 - 446,400; Full time

Job summary

SSC HR Solutions seeks a Senior Mendix Developer to design, develop, and maintain high-quality Mendix applications in Jeddah, Saudi Arabia. This role demands strong technical expertise in Mendix and emphasizes mentoring junior developers and collaborating with stakeholders.

Your responsibilities will include building scalable applications, ensuring security and performance compliance, and leading integration with external systems. Candidates should demonstrate advanced Mendix certification and substantial practical experience.

Qualifications

• Mendix Advanced or Expert certification required; Expert preferential.
• 3+ years developing Mendix applications with production delivery experience.
• Advanced knowledge of domain models and microflows.

Responsibilities

• Design, build, and deploy Mendix applications using best practices.
• Translate business requirements into Mendix solutions.
• Conduct thorough code reviews to enforce quality and maintainability.

Skills

Mendix Advanced or Expert certification

Java proficiency

API design and documentation

Domain modeling

SQL skills

REST/SOAP web services

Git-based development

CI/CD pipelines

JavaScript proficiency

Cloud environment experience

Education

Mendix Advanced or Expert certification

3+ years of experience with Mendix applications

Tools

Git

Mendix Cloud

Azure

Docker

Kubernetes

Job description

Overview

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

• 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 per Java best practices and 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).
• Leverage 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.
• Maintain strong documentation discipline: clean/readable code, comprehensive in-app documentation, and complete handover/technical delivery documents (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

Technical Skills

• Mendix Advanced or Expert certification (Expert strongly preferred).
• 3+ years of experience developing Mendix applications.
• Delivered Mendix applications into production (at least one 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).
• 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 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.