À propos de Guillaume
Français
Bilingue ou natif
Espagnol
Bilingue ou natif
Anglais
Bilingue ou natif
Expériences
- RacemapprFull-Stack/Mobile Developerseptembre 2024 - Aujourd'hui (1 an et 9 mois)Barcelone, Espagne📱As a Mobile & Backend Developer at Racemappr (startup/scale-up listing 100,000+ sports events), I helped build and scale the product that powers event discovery and a smooth mobile experience for athletes and organizers across iOS and Android.🚀What I do:Delivered core mobile features end-to-end in React Native, from UI/UX implementation to performance tuning and release readiness for both platformsDesigned and implemented backend capabilities on Supabase (Postgres), including data modeling for large event catalogs and efficient querying for search/filter use casesStrengthened app reliability through debugging, monitoring, and iterative improvements across the stackCollaborated closely with product/design to ship fast, iterate on feedback, and improve user journeys🧑💻Tech stackReact Native, TypeScript/JavaScript, Supabase (Postgres, Auth, Storage, Edge Functions), REST/HTTP APIs, Git, CI/CD, iOS & Android release
- Biomass ConceptFull-Stack Developerjuillet 2023 - août 2024 (1 an et 1 mois)Barcelone, Espagne🔨As a Full Stack Engineer at Biomass Concept, I contributed to the design and development of an internal ERP, building a robust, scalable system to support core business operations. I worked across the stack to deliver reliable features quickly, with a strong focus on maintainability, performance, and clean architecture.🚀What I didDeveloped end-to-end ERP modules: from requirements to implementation, testing, and deploymentBuilt and maintained backend services in Go, designing scalable APIs and core business logicImplemented a GraphQL layer to streamline data access, reduce over-fetching, and improve frontend velocityCreated responsive, reusable UI components in React with TailwindCSS, ensuring consistency and usabilityImproved system reliability and scalability through refactoring, performance tuning, and collaboration with stakeholders🧑💻Tech stackGolang, GraphQL, React, TailwindCSS, API design, Git, CI/CD
- Squirrel - Agence digitaleFull-Stack developerjuillet 2021 - juillet 2023 (2 ans)🔨As a Remote Full Stack Engineer within a web & mobile development agency, I contributed to multiple client products, delivering both frontend and backend features with a strong focus on quality, performance, and faithful implementation of detailed designs.🚀What I did:Built React + TypeScript front-ends from precise Figma specs (pixel-perfect UI, reusable components, responsive layouts)Designed and developed complete admin back-offices: content management, workflows, roles/permissions, and dashboardsDeveloped backend services in Golang using GraphQL and/or REST APIs, implementing business logic, secure endpoints, and integrationsModeled and optimized PostgreSQL databases (schemas, queries, performance improvements)Delivered across diverse domains: dating apps, healthcare (Google Maps integration, geolocation, advanced search & filters), and sports products🧑💻Tech stackReact, TypeScript, Figma, Golang, GraphQL, REST APIs, PostgreSQL, Git, CI/CD
Recommandations
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Formations
- Expert en technologie de l'informationEpitech Technology2023In essence, the initial two years of Epitech’s Grande École Program are dedicated to acquiring proficiency in fundamental programming languages, with a special focus on C and C++. This forms an essential groundwork, imperative for those envisioning a future in IT expertise, whether it be in software engineering, artificial intelligence, or cybersecurity.
Certifications
- Graph Developer - AssociateApollo GraphQL2023