Julon L.

Senior Software Engineer | Frontend & CI/CD Lead

Salaire / Taux journalier

Bayonne, France

Freelance

À distance uniquement

Expertises

ReactTypescriptSoftware CraftsmanshipDéveloppement FrontendNextSpring BootGitHubTailwind CSSHTMLGitGatsbyGitLabRESTful APIsMavenSassJavascriptAngularJavaCSSReduxAWSTerraformDockerGraphQLCMSMakeAutomatisations No-codeConfluenceKubernetesJiraSEOUI Product DesignDesign webFigma

Langues

Anglais (Maternelle)Français (Maternelle)

À propos

Introduction

Frontend Tech Lead with 10+ years delivering scalable SaaS platforms and design systems. Led migrations to modern stacks (React, Next.js) reducing time-to-market from months to weeks, built production-ready MVPs in 4 months, and automated CI/CD pipelines on AWS/Kubernetes. Expert in Angular, React, DevOps automation, and accessible design systems—transforming legacy codebases into high-performance applications that drive business growth.

Liens

Expérience de travail

Lead Software Engineer

EnedisFreelance

sept. 2024 - Présent

2 ans 2 mois

Paris, France

Redesigned an internal PowerBI application for business users. • Provided technical leadership on the Angular and Java Springboot architecture, integrating ELK stack. • Deployed and automated CI/CD pipelines (GitlabCI, Kubernetes). • Shared DevOps best practices with the team. ⚡️ Impact: Improved application stability and significantly shortened deployment times.

Technical Lead

FortuneoFreelance

avr. 2021 - mai 2024

3 ans 2 mois

Paris, France

Revitalized a team stalled by legacy constraints, enabling rapid delivery of new features. • Led a progressive migration to a modern stack (React, Gatsby, Tailwind) • Overhauled CI/CD processes (AWS), automated pipelines, and coached the team towards full autonomy • Redesigned the CMS using Contentful, with integrations (Inbenta, internal APIs) • Designed and delivered an accessible, cross-team design system (Figma) 🚀 Results: Major reduction in Time To Market (from several weeks/months without shipment to a steady delivery pace post-migration), improved performance, and new product opportunities.

Technical Lead

GBH GroupFreelance

juin 2020 - oct. 2020

5 mois

Paris, France

Creation of a SaaS vehicle rental platform (Next.js, NestJS, ForestAdmin, Contentful). • Managed MVP, DevOps (Docker, Kubernetes, AWS, Terraform, Helm), and automated CI/CD. • Introduced a DevOps culture within the team. 🌱 MVP delivered to production in 4 months, with a scalable CI/CD process successfully transferred to the internal team.

Software Engineer

SNCF Connect & TechFreelance

mars 2018 - juil. 2020

2 ans 5 mois

Paris, France

Major upgrades to the ticket search platform. • Implemented multimodal search: integrated bus ticket search alongside trains (API integrations, richer user journeys). • Migrated the main search module from AngularJS to React—improving performance, UX, and accessibility (WCAG). • Designed and rolled out a cross-team design system. • Revamped the CI pipeline: end-to-end test automation and reliable deployment. • Promoted frontend & CI/CD best practices internally. Result: a more complete and competitive platform, faster and easier to use.

Software Engineer

GouvernementFreelance

mars 2020 - mai 2020

3 mois

Paris, France

Volunteer project for the French Government. • Developed an information access module for ministry websites • Designed and implemented new sections for the COVID-19 info page during the easing of lockdown restrictions

Software Engineer

hypcloudFreelance

août 2017 - oct. 2017

3 mois

Berlin Area, Germany

Design and development of a frontend prototype for a real estate MVP platform. • Built the frontend using Vue.js (Vuex, Vue Router, Vuetify) to deliver a responsive and user-friendly interface. • Worked closely with the client to refine the user experience, prioritize features, and ensure fast iteration cycles. Impact: The MVP was delivered quickly, enabling market validation with investors.

Software Engineer

IADFreelance

oct. 2016 - mars 2017

6 mois

Lieusaint, France

ERP Client Migration Project (AngularJS 1.6/ES6) • Led the successful migration of the client’s ERP system to an AngularJS 1.6/ES6 stack. • Modernized existing code and refactored components into reusable modules. • Automated development tasks with Webpack and Gulp; ensured multilingual support. • Implemented CI processes (GitHub, Jenkins), improved test coverage, and provided team training on AngularJS best practices. Impact: Delivered a more robust workflow and significantly upskilled the team in modern web technologies.

Software Engineer

Magency

oct. 2014 - juil. 2016

1 an 10 mois

Paris Area, France

Hybrid Web and Mobile Development for Two iOS Apps (HTML5, CSS3, AngularJS, Cordova, Jasmine) • Developed hybrid web and mobile applications for iOS using HTML5, CSS3, AngularJS, and Cordova. • Created interactive interfaces, including document previews, remote control features, and live quizzes. • Refactored the entire codebase to AngularJS 1.5, optimizing maintainability. • Worked in an agile environment, collaborating closely with backend developers and designers. Impact: Successfully delivered multi-platform deployments for event-based user journeys.

Information Technology Developer

AEP - Assurance Epargne Pension

oct. 2008 - oct. 2011

3 ans 1 mois

Paris, France

Development of Advanced Applications in C# .NET and SQL Server for Asset Management • Built rich applications in C# .NET and SQL Server to support asset management operations. • Integrated Chorus and Master I systems into the IT landscape through custom middleware. • Automated data processing and conducted business needs analysis. Impact: Improved process reliability and enabled better daily data utilization.

Software Developer

SNCF

oct. 2007 - oct. 2008

1 an 1 mois

Paris, France

Design of a Measurement and Data Acquisition System for Pressure Sensor Test Bench • Designed and developed a prototype system in C# .NET using GPIB/National Instruments for automated measurement and data collection. • Gathered requirements and updated technical documentation for the team.


Formation

Université Paris Nanterre

Master's degree, IT and Business Management (MIAGE)

2008 - 2011

4 ans

Université Paris-Est Créteil

Professional Bachelor's Degree, Computer Systems and Software, specializing in Open Source Software Design and Maintenance

2007 - 2008

1 an 2 mois

EFREI - Grande école du numérique

2006 - 2007

2 ans

Université Paris-Est Créteil

Associate Degree, Computer Science

2004 - 2006

2 ans 2 mois

L'École Multimédia

Année préparatoire, Design graphique

2003 - 2004

11 mois


Licences et certifications

Contentful Certified Professional

Délivré le : juin 2025

Certifié par Contentful

Contentful Certified Content Manager

Délivré le : juin 2025

Certifié par Contentful

Make Intermediate Certificate

Délivré le : févr. 2024

Certifié par Make

Make Intermediate #5 - Error handling

Délivré le : févr. 2024

Certifié par Make

Make Intermediate #4 - Webhooks

Délivré le : févr. 2024

Certifié par Make

Make Intermediate #3 - Introduction to HTTP

Délivré le : févr. 2024

Certifié par Make

Make Intermediate #2 - Using get() and map() functions

Délivré le : févr. 2024

Certifié par Make

Make Intermediate #1 - Introduction to Iterators and Array Aggregators

Délivré le : févr. 2024

Certifié par Make

Make Foundation Certificate

Délivré le : févr. 2024

Certifié par Make

Make Foundation #3 - Introduction to operations

Délivré le : févr. 2024

Certifié par Make

Make Foundation #2 - Expanding my first scenario

Délivré le : févr. 2024

Certifié par Make

Make Foundation #1 - Setting up my first scenario

Délivré le : févr. 2024

Certifié par Make

Make Basics Certificate

Délivré le : févr. 2024

Certifié par Make

Make Basics #2 - An introduction to data types and data structures

Délivré le : févr. 2024

Certifié par Make

Make Basics #2 - An introduction to data types and data structures

Délivré le : févr. 2024

Certifié par Make

Make Basics #1 - Modules, Scheduling, and Bundles

Délivré le : févr. 2024

Certifié par Make

Agile at Work: Building Your Agile Team

Délivré le : avr. 2015

Certifié par Lynda.com

Agile at Work: Building Your Agile Team

Délivré le : avr. 2015

Certifié par Lynda.com

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