THOMAS JOSSO

• Designed and developed responsive isomorphic mobile and web applications, enhancing user experience and engagement
• Architected and developed a scalable GraphQL API with MongoDB, which improved data retrieval efficiency and supported increased user traffic
• Implemented multi-platform CI/CD pipelines, reducing deployment time and increasing development efficiency
• Collaborated with cross-functional stakeholders, including a fitness coach, to align product features with user needs, enhancing product relevance
• Created a business plan and conducted market analysis, identifying key growth opportunities and guiding strategic decisions
• Defined and drove both short and long-term commercialization strategies, leading to improved market penetration and increased revenue
• Collected user feedback on pricing and refined the product-market fit, resulting in enhanced customer satisfaction and increased sales

• Designed and delivered end-to-end features using React and Next.js, enhancing user experience and increasing application efficiency
• Developed and maintained automated tests (unit, integration, and regression) using Typescript, improving code reliability and reducing bugs
• Collaborated with product and commercial teams to define technical specifications, ensuring alignment with business goals and improving project outcomes
• Led feature development from design to deployment using React Native, resulting in timely project completion and enhanced product functionality
• Handled incidents and migrations proactively, minimizing downtime and ensuring seamless transitions for users
• Managed version deployments, monitored post-release stability, ensuring smooth transitions and minimizing downtime
• Contributed to development best practices by implementing React and Typescript standards, enhancing code quality and team efficiency
• Participated in code reviews, providing feedback that improved code quality and reduced bugs

• Designed and delivered end-to-end features using React Native and Typescript, improving user engagement and system performance
• Developed and maintained automated tests (unit, integration, and regression) using Jest and Cypress, ensuring high code quality and reducing bugs
• Collaborated with product and commercial teams to define technical specifications, leading to more efficient project execution and alignment with business goals
• Led feature development from design to deployment using Next.js and GraphQL, resulting in faster release cycles and improved application scalability
• Handled incidents and migrations proactively, which minimized downtime and ensured seamless transitions to new systems
• Managed version deployments, monitored systems, and ensured post-release stability, leading to a 20% reduction in downtime
• Developed and implemented best practices for React Native and Typescript, improving code quality and team efficiency
• Participated in code reviews, providing feedback that enhanced code quality and reduced bugs by 15%

• Selected the client-side tech stack using React and Typescript, enhancing development efficiency and project scalability
• Created a cohesive graphic identity using React Native, which strengthened brand consistency and improved user engagement
• Delivered the app with a focus on supporting €5M fundraising goals
• Designed a lightweight web application for a live demo with a major retailer, showcasing product features and enhancing potential partnership opportunities
• Implemented a continuous deployment process for iOS and Android, reducing deployment time and increasing app reliability
• Developed mobile-focused tests and recruitment interviews using React Native, enhancing the hiring process by ensuring candidates' skills matched project requirements

• Developed the first bet combinator in the French market, enhancing user engagement and increasing betting options
• Implemented the graphical redesign of odds to support expansion into the Spanish market, improving user interface and market reach
• Collaborated with UI/UX teams to evolve and refine designs, resulting in a more intuitive user experience and increased user satisfaction
• Supervised three interns over a semester, providing guidance and mentorship, which led to successful project completions and skill development

• Designed an integrated WeChat application for a luxury brand, enhancing brand presence in the Chinese market
• Implemented targeted web advertising campaigns for the Chinese market, improving brand visibility and customer engagement
• Maintained the online sales website for a luxury brand, ensuring optimal performance and user experience
• Provided end-user training and support, improving customer satisfaction and product adoption

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