Location: France
Phone: 0618868127
Email: julien.boulevart@gmail.com
Nationality: French / Canadian
LinkedIn: https://www.linkedin.com/in/julien-boulevart-avril-a9ab3b64/
Github: https://github.com/iamvimuserbtw/
Website: https://jboulevart.dev

Frontend Engineer with 15+ years of experience specializing in React and React Native development for financial technology platforms. Proven track record building and maintaining applications serving millions of users, with expertise spanning mobile banking features, transaction processing, and high-traffic web platforms. Strong background in team leadership, having managed and mentored junior developers while establishing quality standards through code reviews and automated testing. Combines technical proficiency in modern JavaScript frameworks with solid project management foundations and Agile methodology experience. Currently exploring AI integration through side projects, experimenting with workflow automation tools like N8N and AI frameworks including Langchain.

• React/React Native
• HTML/CSS
• TypeScript
• Git
• GraphQL
• Node.js

• French
• English

January 2025 — May 2025

• Resolved bugs and implemented new features on a React Native mobile application serving 4 million monthly active users, working within a complex, enterprise-level codebase
• Conducted intensive QA testing and rigorous code review processes to ensure stability and performance for a mission-critical application with millions of users
• Led technical conception and planning for new features, ensuring scalable solutions that could handle high-volume user traffic and maintain system reliability
• Gained expertise in working with large, complex codebases while maintaining code quality and performance standards in a high-impact production environment

January 2022 — December 2024

• Implemented advanced features including comprehensive credit card management system (adding, deleting, setting limits, locking functionality), enhanced transaction user interfaces, and QuickBooks integration for seamless accounting platform connectivity
• Led technical conception and design phases for new feature implementations, ensuring scalable and maintainable solutions
• Conducted thorough testing procedures to ensure feature reliability and system stability across all new implementations
• Maintained and updated Storybook component library, managed dependency updates, and introduced new technologies to modernize and improve the development stack

February 2020 — January 2022

• Maintained and improved a React Native mobile application by resolving bugs and implementing new features, including premium subscription functionality with perks, bill negotiation services, and enhanced reward systems
• Led technical conception and planning phases before launching new features, ensuring proper architecture and implementation strategy
• Conducted thorough code reviews to maintain code quality standards and performed comprehensive testing to ensure feature reliability and application stability
• Created detailed technical documentation to support development processes, feature implementations, and team knowledge sharing

November 2018 — February 2020

March 2015 — November 2018

• Built web applications using leading JavaScript frameworks including React and Vue.js, gaining expertise in component-based architecture and modern frontend development practices
• Developed cross-platform mobile applications using React Native, extending web development skills to native mobile app creation
• Guided and trained junior developers, sharing technical expertise and best practices to help team members grow their skills and capabilities
• Gained foundational project management skills while also handling technical conception for frontend architecture, and created comprehensive technical documentation to ensure smooth onboarding and project understanding for new team members

April 2013 — March 2015

• Built bespoke, data-driven web applications using modern technologies including Angular for frontend, Node.js for backend, and advanced visualization libraries (D3.js, Three.js)
• Created interactive and immersive data visualizations, leveraging both 2D (D3.js) and 3D (Three.js) graphics to transform complex datasets into user-friendly visual experiences
• Conducted comprehensive QA testing to identify and prevent bugs, regressions, and technical issues before deployment
• Ensured pixel-perfect implementation of designs by performing design QA, verifying that the final product matched the designer's specifications and maintained design integrity

Otober 2009 — April 2013

• Gained hands-on experience building multiple websites using diverse technologies including CMS platforms (WordPress, Drupal, Magento, TYPO3), frameworks (Angular, Apache Cordova), and JavaScript libraries (jQuery, MooTools, React)
• Developed strong project management skills and learned to work efficiently under tight deadlines, adapting quickly to fast-paced development environments
• Built mentoring and communication skills by teaching other developers and establishing best practices for the frontend engineering team
• Acquired comprehensive knowledge across the web development stack, from content management systems to modern JavaScript frameworks and mobile app development tools

September 2009 — June 2011

• Deepening of the Agile methodology and project management
• Development of applications in different languages (PHP, Ruby), frameworks (Symfony, Zend Framework, Ruby on Rails) and CMS (Drupal, WordPress)
• Teamwork with different roles each time to understand and learn the different web professions

September 2008 — June 2009

• Learning of web design with the learning of different Adobe create suite tools such as Photoshop, Illustrator, and InDesign
• Apprenticeship that gave me the opportunity to learn the basics of project management and Agile methodology

September 2006 — June 2008

• Introduction and learning of programming languages and paradigms, including object-oriented programming (JAVA, PHP)
• Introduction and learning of web development and its technologies, including HTML, CSS and JavaScript
• Introduction and learning of databases and the most popular database management systems (MySQL, PostgreSQL)