About Guillaume
French
Native or bilingual
English
Fluent
Experience
- GSC Integrations & ConsultingCEO + CTO / Backend Tech-Lead / .NET Core Solution ArchitectDIGITAL AND ITAugust 2022 - Today (3 years and 10 months)Experienced in building enterprise‑grade platforms from scratch using .NET Core, C#, TypeScript or Java, and modern cloud/open‑sourced stacks. Led a 30‑month mission at ITER.org, designing the core of ICP4 (Integrated Content Platform), gathering large‑scale engineering and business data. Strong expertise in Hexagonal Architecture, scalable REST APIs, Docker, MongoDB, event‑driven systems, DDD/TDD, and CI/CD. Agentic Coding with Claude since 2024. Also led teams delivering Azure‑based or self‑hosted APIs, Angular front‑ends, and enterprise telephony systems (Microsoft Teams). Skilled in workflow design, software models, collaborative tooling, DevOps, technical strategy for SMEs & retail environments.
- PoolsSENIOR DEVELOPERSOFTWARE PUBLISHINGJanuary 2022 - July 2022 (6 months)Bordeaux, FranceFunding a Domain StoryTelling workshop with POs, UX then dev for a new project (artists worlds). Learning blockchain principles and Event Sourced architecture by JB Dusseaut. Using Kotlin to propose a new implementation of the Java seed on GCP with Vertx. Coding in pair programming using KotlinTypeScriptReact.
- PrimoboxTECHNICAL LEAD / SENIOR DEVELOPER / DDD ADVISORFebruary 2021 - December 2021 (10 months)Helping in the product strategy with DDD insights and workshops counselor for the CTO and the CEO: Business Canvas, Wardley Maps, Event Modeling, Domain Story Telling, Miro, Slack, Jira, Jenkins, Docker. CODE: Kotlin, Java, Spring Boot, JPA, Mongo DB, Artemis. METHODS: DDD, TDD, Mutation Testing, Sonar, Promyze, ArchUnit ... DevOps mindset.
Recommendations
Be the first to recommend Guillaume
Help this freelancer shine by sharing your experience working together.
These freelancer profiles also match your criteria
Agatha Frydrych
Backend Java Software Engineer
4.7
(3)
2
Baptiste Duhen
Fullstack developer
4.6
(4)
5
Amed Hamou
Senior Lead Developer
4
(2)
7
Audrey Champion
Web developer
4.3
(3)
4
Education
- ZX81ZX81
- Universit« PaXO SaEatier