The existing SIRENE tool had become fragmented and difficult to use, with heavy processes and onboarding periods stretching up to two years before an employee could work autonomously. After years of inefficiency and shifting legal frameworks, INSEE needed a complete redesign to streamline operations, support employees, and ensure data accuracy across the national register.

Define product scope and functionality, conduct benchmarks and discovery sessions with SMEs, design wireframes and high-fidelity screens, and structure the Agile design process to integrate tasks into the development workflow while balancing user needs, technical feasibility, and business constraints.

The new system restructured and simplified the workflows of the SIRENE registry. Covering 65 touchpoints and 20 workstreams, it optimized processes for data entry, validation, training, and reporting. I prototyped more than 80 high-fidelity screens to illustrate the new workflows, providing INSEE with a clear product vision ready for development.

I conducted on-site research with over 40 employees and managers across five local offices to deeply understand pain points. I organized and led more than ten co-design workshops to rethink tools and processes, ensuring buy-in from day one. Beyond UX and UI redesign, I led the transformation and change management of the service: modernizing ways of working, implementing both horizontal and vertical training approaches, and building a knowledge base to prevent loss of expertise due to turnover and long training cycles. I also advised the director on team reorganization, ensuring alignment between workflows, roles, and the new tool.

The redesigned SIRENE tool delivered immediate, measurable improvements: Simplified several processes by a factor of 10 in time consumption Reduced onboarding timeline from two years to just a few months Empowered employees to focus on higher-value tasks rather than repetitive admin Ensured knowledge retention through a centralized base and updated training methods Produced a validated prototype (+80 screens) as the foundation for development and rollout

Designing for government systems requires balancing strict legal and technical frameworks with usability. Deep immersion in user contexts, combined with rapid prototyping and co-creation, proved essential to build trust, secure adoption, and deliver measurable efficiency gains. Leading change management alongside design showed how much organizational culture is intertwined with successful digital transformation.

“Adrien is highly competent, reliable, and incredibly responsive: a real pleasure to work with. He quickly grasped the complexity of both the organizational and technical challenges and managed to turn them into actionable, innovative solutions. His ability to combine strategic thinking with hands-on design made a decisive difference in the success of the project. I strongly recommend him for any complex transformation initiative.” Véronique H., Innovation Partner, Deloitte France