Seif Eddin BEN SASSI

Built modern, responsive user interfaces including Help Center, Blog section, Listing Detail page, and Account Settings & Complete Profile flows following UI/UX best practices. Engineered a Writer Dashboard to centralize blog and Help Center content management. Developed secure client and admin dashboards with features for reservation tracking, user management, and real-time system analytics. Conducted UI & code optimization with refactoring, lazy-loading, and caching to reduce time-to-interactive by approximately 40%. Designed APIs for bookings, authentication, and customer/host portals. Handled SQL & Supabase architecture focusing on PostgreSQL schema design, RLS policies, and billing webhooks. Contributed to architectural decisions, code reviews, and full-stack performance tuning, achieving Lighthouse scores above 90/100.

Conducted preventive and corrective maintenance on electrical and electronic installations. Performed fault diagnostics, repairs, and compliance checks ensuring all work met applicable standards. Maintained detailed records and traceability of technical interventions for follow-up and continuous improvement.

Executed preventive and corrective maintenance on electrical and electronic assets such as switchboards, variable-speed drives, and sensors to maximize uptime and extend equipment life. Troubleshot faults, conducted repairs, and verified compliance with IEC 60364 / NF C 15-100 standards, reducing mean time-to-repair by about 15%. Implemented digital CMMS tracking, logging interventions, analyzing root causes, and promoting continuous improvement.