Freelancer profile translated to English.
Back to original languageAbout Guillaume
🤝 In close collaboration with you, I combine my expertise and passion for technology to realize your most ambitious projects.
From defining your requirements to deployment, I am by your side at every stage of your full-stack projects. Whether the challenge is development, cloud architecture, the performance of your stack, security, or user experience, I assist you in identifying and refining your needs.
My approach combines attentive listening, meticulous analysis, collaborative work, curiosity, innovative proposals, and cutting-edge technological recommendations. 🦾
+ My Expertise +
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Tech Lead & Training: Mentoring and supporting teams, defining technical needs, implementing agile methodologies, and training in current best practices and technologies.
UX/UI Design: Application of the IDEO methodology for user-centered design, from needs identification to wireframing and user testing. Strategyzer methodology.
Front-end: Design of ergonomic interfaces and component-based approach with React (Native), Svelte, Stencil, TailwindCSS, Electron.
Back-end: API-first approach with REST, GraphQL, Node.JS, Express, NestJS, Postgres (or MongoDB), OpenID.
Ops & Cloud: Continuous deployment of the stack (CI/CD) with GitLab CI, cloud architecture (AWS, Scaleway), Auth (Keycloak, Auth0), Infrastructure as Code (Terraform), Docker/Podman, Serverless, Kubernetes, DNS.
WordPress: Integration, Plugin creation (and custom Elementor modules), WooCommerce, CDN, security, headless CMS.
+ Who am I? +
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- Trilingual: English, French, and German
- Among my clients: large corporations, startups, governments, associations, universities, schools
- My latest project: worldmigrationmap.org
+ My Approach +
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- Transparent
- Transversal
- User-centered
English
Native or bilingual
French
Native or bilingual
German
Fluent
Can work on-site
Paris (up to 10km)
Experience
- ArchifiltreTech LeadSOFTWARE PUBLISHINGJune 2024 - Today (2 years)Paris, FranceArchifiltre Application Redesign
- Technical Lead for application redesign: Responsible for the redesign of the Archifiltre Docs application, modernizing the existing Electron and React architecture to SvelteKit and Tauri for a more performant and maintainable solution.
- Improved performance and maintainability: Choice of lighter and better-suited technologies (SvelteKit & Tauri), significantly improving application performance, particularly in terms of loading times and resource optimization.
- Design and development of the new version: Close collaboration with the product team and archivists to develop a more modern and maintainable version of the application, while ensuring constant iterations to test and validate technological choices.
- Maintenance of the existing application: Ensuring the stability of the existing application during the transition to the new version, providing bug fixes and technical adjustments as needed.
- User-centered approach: Direct work with end-users, particularly archivists, to understand their needs and improve the product's ergonomics and functionality.
- Open source and innovation: Contribution to a project supported by the Social Ministries and the Ministry of Culture, with an open-source approach (Apache license), enabling increased accessibility and transparency of the application for over 300 institutions in France.
- MailsoarFront End DeveloperSOFTWARE PUBLISHINGMay 2024 - June 2024 (1 month)Paris, FranceProject Context:Mailsoar, the French leader in email deliverability, wants to develop a SaaS solution to offer its clients real-time alerts and recommendations to optimize their emailing campaigns.Technologies:
- SvelteKit
- HTML5
- CSS3
- JavaScript.
Tasks:- Design and development of responsive user interfaces.
- Integration of Figma mockups.
- Development of subscription pages, account management, and dashboards.
- TotalEnergies Marketing France (TMF)Full Stack DeveloperENERGY AND UTILITIESSeptember 2023 - Today (2 years and 9 months)As a senior Full Stack Web Developer at TotalEnergies, I was responsible for the complete redesign of the company's loyalty website. My main mission was to modernize the site's graphic identity and improve the user experience (UX) to offer an optimal online experience to customers.To achieve this, I began with an in-depth analysis of user needs, using tools such as personas and user journeys to understand customer expectations and behaviors. I then worked closely with the marketing team to ensure the site's new graphic identity aligned with TotalEnergies' brand strategy.I took charge of designing and developing a new, modern, and user-friendly interface, using the latest technologies and best practices in web development. I also worked on optimizing the site's loading speed and improving security to ensure a smooth and secure user experience.I also conducted user testing to gather feedback and suggestions for improvement, and made the necessary changes to meet the needs of end-users.Through this project, I was able to leverage my skills in Full Stack Web Development, UX Design, and collaboration with cross-functional teams. I am proud to have contributed to the creation of a modern and user-friendly loyalty website for TotalEnergies, which meets customer needs and reflects the company's brand image.
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Education
- Master Degree in Web Software Development and Innovation ManagementWeb School Factory2017Software engineering, Business Model Innovation, UX Design
- Scientific Baccalaureate, Engineering SciencesLycée Louis Couffignal, Strasbourg2012