Freelancer profile translated to English.
Back to original languageAbout Guillaume
Passionate developer turned architect, I combine solid technical expertise and project management experience to design robust and intuitive applications. My career began as a developer, quickly evolving into lead developer roles where I managed teams and oversaw large-scale projects. Since January 2023, I have been self-employed, committed to creating innovative solutions tailored to my clients' specific needs.
With several years of experience in various environments, I master a wide range of languages and frameworks, such as JavaScript, TypeScript, Java, Python, and SQL. Thanks to my in-depth knowledge of modern libraries like React, Angular, and VueJS, I design engaging and high-performance user interfaces. In parallel, I develop solid back-ends with Node.js or Java and relational and NoSQL databases, such as PostgreSQL and MongoDB.
Quality assurance is at the heart of my approach. I implement rigorous testing practices, including unit tests, integration tests, and performance tests, to ensure application reliability and optimization. My expertise in continuous integration and deployment with tools like GitLab CI, Jenkins, and Docker ensures smooth, high-quality delivery.
Always ready to take on new challenges, I am motivated by the creation of innovative solutions that transform operations and improve efficiency. Whether developing management applications or optimizing processes through automation, I am determined to make a difference in every project.
French
Native or bilingual
English
Fluent
Can work on-site
Saint-Herblain (up to 50km)
Experience
- NeoGeoProject Architect / Experienced DeveloperJanuary 2023 - August 2024 (1 year and 8 months)Nantes, FranceCOLIBRI (Light Aviation Control along the Cocaine Route):- Development of a cross-platform mobile application (Android/iOS) with Ionic React to monitor general aviation along the cocaine route.- Integration of an offline mode for availability without a network.- Use of GraphQL and Postgres to ensure performance, security, and user-friendliness.GeoNetwork-UI:- Integration of a data quality measurement widget into the open-source Geonetwork-UI framework, in collaboration with the European Metropolis of Lille.- Implementation of a Geonetwork solution for the Hauts-de-France region, with data retrieval and graphic customization.- Use of Angular, ElasticSearch, and Docker for development and deployment.OGS (One Geo Suite):- Contribution to the development of a complete range of mapping modules (Publish, Explorer, Maps, Dataviz, Portal, Contrib) to meet client needs.- Use of Angular and VueJS frameworks to design advanced mapping functionalities.- Collaboration with the development team to ensure module quality, performance, and stability.SIGFU (Integrated Urban Land Management System):- Reinforcement in the development of the SIGFU application, a comprehensive real estate management platform for land stakeholders in Ivory Coast.- Collaboration in creating an application using Ionic Angular, deployed on the web, iOS, and Android, with a responsive website for optimal user experience.- Integration of Keycloak to ensure secure user authentication. Environment: Ionic React, GraphQL, Android, iOS, Postgres, Angular, Elastic Search,Geonetwork-UI, Geonetwork, Docker, VueJS, Keycloak, TailwindCSSEnvironment: Ionic React, GraphQL, Android, iOS, Postgres, Angular, Elastic Search,Geonetwork-UI, Geonetwork, Docker, VueJS, Keycloak, TailwindCSS
- GeofitProject Architect / Experienced DeveloperJanuary 2022 - December 2022 (1 year)Nantes, FranceCIM (Computer-Integrated Manufacturing):- Study of market solutions to identify the optimal approach meeting Geofit's needs.- Design and development of a production management application for project managers, integrating BPMN workflow creation and monitoring for task assignment.- Use of ReactAdmin, Hasura, Postgres, and Docker to provide a responsive administration interface while ensuring scalability, performance, and security.- Integration of the bpmn.io workflow engine for smooth task orchestration and visibility on project progress.- Deployment of the solution within Geofit's eGeo ecosystem for seamless integration.BDFH (Land and Housing Office):- Maintenance and continuous development of a land dematerialization application in Ivory Coast, based on the Innola framework and using Camunda and ExtJS, to ensure its stability, reliability, and security, while meeting evolving user needs and regulatory requirements.- Close collaboration with the development team and stakeholders to understand requirements and provide tailored solutions.Environment: BPMN, ReactAdmin, Hasura (GraphQL), Postgres, Docker, VSCode, Camunda, ExtJS, Eclipse, SourceTree, Drools, Java
- Ministère de l'Europe et des Affaires étrangèresProject ArchitectPUBLIC SECTORApril 2019 - January 2022 (2 years and 9 months)Nantes, France- Design and writing of the architecture document for the Saphir application, a digital archiving solution for the Ministry of Europe and Foreign Affairs (MEAE), detailing technical choices and proposed solutions.- Development and integration of application components, ensuring the secure handling, preservation, and consultation of large volumes of digital archives, using the VITAM inter-ministerial archiving solution for the backend.- Implementation of the front-end with HornetJS, an open-source solution based on React, offering an intuitive and user-friendly interface, while managing continuous integration with GitLab CI for efficient development processes.- Responsibility for merge requests and management of DevOps operations, ensuring consistency, source code quality, and efficient, stable application deployment.- Automation of deployment and administration operations with Ansible and SaltStack, as well as migration of the Kafka messaging environment to Node.js, improving performance and stability.- Transformation of automated tests from Cucumber to Codecept for increased functional coverage and implementation of a Sonar system with specific rules for static code analysis, thereby enhancing code quality.Environment: React, HornetJS, Java, webpack, spring boot, PostgreSQL, NodeJS, VITAM, Ansible, SaltStack, Gitlab-CI, Codecept, Cucumber, Sonar
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Education
- Concepteur-Architecte InformatiqueConservatoire National des Arts et Métiers (CNAM)2013Concepteur-Architecte Informatique option systèmes d’information
- Licence professionnelle systèmes informatiques et logicielsIUT de Nantes2006Licence professionnelle systèmes informatiques et logiciels spécialité développement d'applications réparties