Abderrahmane Hilali

Technical Lead

Hands-on technical leadership across frontend platforms, web applications, and the modernization of legacy systems.

• Own the architecture, development, performance, code quality, and technical standards of a company-wide frontend component platform.
• Built and evolved Cobalt, a shared component library with approximately 25–30 reusable components, used by Sefas applications including Designer, Eaccess, EDG, and Conductor.
• Define the development standards used by frontend teams, including component design, coding practices, code quality, and architecture.
• Design modern frontend systems that work with legacy Dojo applications and legacy data models, without having to build and maintain completely separate applications.
• Introduced a component-based architecture that separates resource management, rendering, and serialization.
• Changed parts of the frontend architecture from Angular components to native Web Components for highly interactive editors, solving performance and reliability issues.
• Identified problems with Angular's change detection for complex editors such as paragraphs, tables, and images, and led the move to a more direct component model. This approach made development faster, reduced reported bugs, and made the code easier to maintain and debug.
• Reduced an Angular application bundle from approximately 1.2 MB to 300 KB through architecture and bundle optimization.
• Designed a granular document update system that sends only the changed JSON data and its target index, instead of sending the full document each time.
• Developed backend features for role management, including listing and managing user roles.
• Optimized slow backend APIs — especially those listing roles and permissions — cutting response times from several seconds down to milliseconds.
• Continue to write and review production code while providing technical direction to a team of approximately 4–5 developers.
• Mentor developers, review implementations, define technical standards, and make architecture decisions for the team.
• Investigate difficult frontend and browser problems involving rendering, synchronization, editing, integration, and performance.
• Design and maintain CI/CD workflows and development practices.

Software Engineer

• Designed and developed solutions across mobile, web, and backend systems.
• Checked the technical feasibility of new features and integrations before implementation.
• Refactored application code to improve maintainability and reliability.
• Worked across frontend and backend systems to deliver product features.
• Investigated technical issues and improved system reliability.
• Identified a performance bottleneck in the Bulldozair blueprint viewer, where large building blueprints caused major loading issues, and proposed a Leaflet-based tiling architecture with a message queue to pre-generate rasters per zoom level, resolving the bottleneck.
• Built a proof-of-concept mobile app in Flutter to show that the existing Android app could be refactored to simplify long-term maintenance.

Fullstack Developer

• Developed backend features including user management, data processing, and third-party integrations.
• Developed frontend and mobile application features, including the mobile app built with React Native.
• Worked across application layers to implement features and solve technical problems.
• Improved application performance, reliability, and security.