Senior hands-on development, integrations, security, and performance improvement for new and existing Mendix applications.
Teams that need experienced Mendix delivery, specialist support, or improvements to an existing application.
Application architecture and development; REST, OData, and SOAP integrations; security and authorization; data migration; performance optimization; refactoring and team guidance.
The founder’s professional experience includes rental platforms, financial workflows, rule-based processing, environmental monitoring, and multilingual mobile applications.
The following roles describe Yamen’s professional experience. They are not presented as projects delivered through AL-AQSA or as client endorsements.
Implemented granular permissions across data, pages, features, and business processes, alongside Peppol electronic invoicing and tiered SaaS subscriptions configurable by asset type, branch, or group.
Worked with architects and high-code developers on API contracts, integration architecture, performance, reservations, planning, digital contract signing, and utilization-based pricing.
Mendix 10 / 11 · Java · JavaScript · WCAG 2.1 AA · AI / GenAI · Automated and unit testing
Designed, built, and maintained Android, iOS, and Progressive Web Applications using Mendix, external APIs, and responsive interfaces.
Improved responsiveness, load times, and memory efficiency, and supported debugging, troubleshooting, recruitment, and development-team growth.
Java · JavaScript · WCAG 2.1 AA · REST / OData
Large-scale archiving: designed a high-performance module handling millions of application objects using Queue Tasks and OQL in a cloud financial application.
Internal operations: developed and refactored finance, invoicing, reimbursements, commuting, leave, and sickness functionality, including Google SSO and external integrations.
Queue Tasks · OQL · SAML / OIDC · SSO
Understand the problem, audience and outcome that matters most.
Turn the right ideas into a practical roadmap, design and technical plan.
Deliver with care, transparency and regular momentum — not surprises.
Launch confidently, learn from real use and keep making the product stronger.
Share your goal, your current situation, and any important constraints. Your enquiry goes directly to AL-AQSA so we can discuss a practical next step.