Julien Esnault

As a Software Engineer at SFR, I played a key role in modernizing and optimizing the company's internal tools. My main achievements include:

Migration of a project management tool

Led the transition of a legacy PHP application to a modern stack

Backend: Implemented a robust architecture with Symfony

Frontend: Developed a responsive and high-performance interface with React

Results: Significant improvement in application performance and scalability

Development of a real-time project tracking module

Designed and implemented an innovative solution

Seamless integration with existing systems

Impact: Measurable increase in team productivity and stakeholder satisfaction

Improvement of quality processes

Close collaboration with the QA team to implement automated tests

Implementation of TDD (Test-Driven Development) practices

Result: 25% reduction in deployment errors

Technical skills implemented

Backend: Symfony, modern PHP, REST API

Frontend: React, Redux, JavaScript/TypeScript

DevOps: Docker, CI/CD

Tests: PHPUnit, Jest

Methodologies: Agile, Scrum

This experience allowed me to strengthen my skills in full-stack development, software architecture, and complex project management in a large-scale enterprise environment.

I had the privilege of leading the development of an innovative E-learning platform focused on selling coding and no-code training. As the lead developer, I was responsible for the application's architecture design, front-end programming using React and TypeScript, and overall project coordination.

During this project, I was responsible for supervising and training two interns, which allowed me to strengthen my leadership and communication skills. I guided these interns through various development phases, from integration to debugging, helping them overcome technical challenges and progress in their learning.

Furthermore, I was invited to give several talks on coding for entrepreneurs. I shared my knowledge and passion for web development, emphasizing the importance of learning to code for innovation and technological independence in the business world.

This experience has reinforced my technical and leadership skills, as well as my ability to teach and inspire others. I am enthusiastic about bringing these skills and experiences to your project.

I recently undertook a complete redesign of a website on SquareSpace, bringing new life to a product by optimizing its design and usability. My goal was to make the user experience smoother and more engaging, based on best practices in UI/UX.

During this project, I had the opportunity to delve into the fascinating world of startups and entrepreneurship. I learned to understand the specific needs of this environment, particularly in terms of speed, efficiency, and creativity.

Concurrently, I created mockups on Figma to present projects to investment funds. This work required both clear presentation and a deep understanding of investor expectations. These mockups were a key element in demonstrating the viability and potential of these projects.

This experience has allowed me to develop great versatility, understand the challenges of entrepreneurship, and refine my design skills on Figma. I am enthusiastic about bringing these skills and experiences to your project.