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I am a Lead Front-End developer with a passion for building fast, accessible web interfaces. I lead front-end development and project delivery, define technical standards, and mentor teams to ship robust, scalable solutions. I thrive in cross-functional environments, collaborating with product, design and back-end teams to translate UX concepts into clean, maintainable code. I have hands-on experience with WordPress, Webflow, Symfony and PrestaShop, and I excel at optimizing performance and ensuring accessibility across multi-device experiences.…I am a Lead Front-End developer with a passion for building fast, accessible web interfaces. I lead front-end development and project delivery, define technical standards, and mentor teams to ship robust, scalable solutions. I thrive in cross-functional environments, collaborating with product, design and back-end teams to translate UX concepts into clean, maintainable code. I have hands-on experience with WordPress, Webflow, Symfony and PrestaShop, and I excel at optimizing performance and ensuring accessibility across multi-device experiences.

Sonia Yahyaoui

Front-End Developer, Web Developer, UI Designer, +4

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I am a Lead Front-End developer with a passion for building fast, accessible web interfaces. I lead front-end development and project delivery, define technical standards, and mentor teams to ship robust, scalable solutions. I thrive in cross-functional environments, collaborating with product, design and back-end teams to translate UX concepts into clean, maintainable code. I have hands-on experience with WordPress, Webflow, Symfony and PrestaShop, and I excel at optimizing performance and ensuring accessibility across multi-device experiences.…I am a Lead Front-End developer with a passion for building fast, accessible web interfaces. I lead front-end development and project delivery, define technical standards, and mentor teams to ship robust, scalable solutions. I thrive in cross-functional environments, collaborating with product, design and back-end teams to translate UX concepts into clean, maintainable code. I have hands-on experience with WordPress, Webflow, Symfony and PrestaShop, and I excel at optimizing performance and ensuring accessibility across multi-device experiences.

Available to hire

I am a Lead Front-End developer with a passion for building fast, accessible web interfaces. I lead front-end development and project delivery, define technical standards, and mentor teams to ship robust, scalable solutions. I thrive in cross-functional environments, collaborating with product, design and back-end teams to translate UX concepts into clean, maintainable code. I have hands-on experience with WordPress, Webflow, Symfony and PrestaShop, and I excel at optimizing performance and ensuring accessibility across multi-device experiences.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

French

Fluent

English

Advanced

Work Experience

Lead Front End Developer at Cosa

May 1, 2016 - Present

Ensured the visual and functional ergonomics of user interfaces. Guaranteed portability and interoperability of websites across platforms and browsers. Strong proficiency in responsive design, UX, and mobile interface development. Used collaborative tools (Jira, Notion, Figma, Git…). Compliance with accessibility standards (W3C) and web best practices. Contribution to SEO optimization through semantic, standards-compliant integration (tags, keywords, URL optimization…). Team management and coordination of technical tasks. Facilitation of workshops (UX workshops, scoping workshops, technical workshops).

Web Developer at Same team

May 1, 2014 - May 1, 2016

Redesign of websites to improve navigation and visual appeal. Integration of design mockups. Responsive design and compatibility across browsers and devices (desktop, mobile, tablet). Skills management — inter-office coordination and operational management of the office.

Lead Front-End / Cheffe de projet at Cosa

May 1, 2016 - Present

Piloting visual and functional ergonomics; designing and optimizing user interfaces with a focus on performance, accessibility and user experience. Ensuring portability, cross-browser compatibility, and interoperability across web platforms, while adhering to W3C standards and best front-end practices. Functional and strategic scoping of projects: understanding business needs, drafting requirements, defining objectives, risk identification, workload estimation, roadmaps, and product vision participation. Client relationship management and workshops: gathering needs, reframing, UX exploration, prioritization, synthesis, and clear restitution. Project management and team coordination: planning, organizing, tracking schedules, coordinating design, integration, development and QA teams, monitoring KPIs, risk management, and reporting. Operational development involvement: leading edge-front-end development, advanced WordPress, Prestashop, and Symfony integrations, continuous code optimizati

Développeur web at Same Team

May 1, 2014 - May 1, 2016

Redesign of websites to improve navigation and visual appeal; integration of design mockups; responsive design and cross-browser/device compatibility (desktop, mobile, tablet). Leadership in skills management and inter-office coordination; hands-on development work plus collaboration with project stakeholders.

Lead Front-End at Cosa

May 1, 2016 - Present

Definition and implementation of technical solutions addressing functional and performance challenges. Wrote technical specifications, unit tests, and participated in code reviews. Performed web performance analysis and led Front-End teams; established standards; coordinated web projects with product, design and clients. Managed backlogs and tickets, produced regular reports, and facilitated cross-functional working groups while sharing best practices. Proficient in agile project management and collaborative delivery of high-quality interfaces.