Freelancer profile translated to English.
Back to original languageAbout Guillaume
Software engineer with 10 years of experience trained at EPITA, I have developed varied technical expertise through projects in finance, telecommunications, industry, and energy. My career has taught me to adapt technical solutions to real-world constraints: tight budgets, short time-to-market, or technical debt to manage.
Today, as a freelancer, I mainly support project leaders who are starting from scratch: stack choices, cloud architecture, development of the first components. My goal is simple: to help you build a solid technical foundation, without over-engineering, to start quickly and soundly.
French
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- DejaBlueSenior Frontend DeveloperAUTOMOBILEApril 2024 - October 2025 (1 year and 6 months)Paris, FranceDevelopment of the supervision interface for the management of electric vehicle chargers: equipment status, remote commands, diagnostics. The application aggregates and displays real-time data on almost all pages.I worked on several demanding technical aspects: performance optimization with real-time data streams, UX design for site pricing configuration, and development of an interactive timeline for event visualization. I also contributed to the design of certain backend interfaces and to the reflection on business flows.Occasional interventions on the backend side in Go.
- Neuralk AIFull Stack and DevOps DeveloperTECHFebruary 2024 - October 2025 (1 year and 8 months)Paris, FranceSetup of the cloud architecture from scratch on GCP/GKE. I designed a Kubernetes infrastructure optimized to control costs with auto-scaling strategies.Development of several services: backend API for clients, orchestration and processing services, data storage and validation services, integration of user management. Setup of a complete local development environment.Technical challenges: cloud cost management, large data volumes, GPU issues (availability, cost).
- Schneider ElectricC# and Front DeveloperENERGY AND UTILITIESMarch 2021 - September 2023 (2 years and 6 months)Carros, FranceComplete migration to the web of an industrial automation architecture configuration application. The tool allows designing architectures with automatic validation of compatibility and technical constraints.The original C# application was entirely redeveloped in Vue.js and TypeScript. The business logic was ported to the client side to allow both web usage with team sharing features and an offline desktop version.I notably worked on the graphical rendering of architectures, validation systems, and various complex technical features to run in the browser.
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Education
- Computer EngineeringEPITA2014Spécialité Génie Informatique des Systèmes Temps Réels et Embarqués.