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Jérémie ZarcaJZ

Jérémie Zarca

Senior Fullstack Engineer | React, Node.js, Python

€600/day
2 projects
Paris, FR
8-15 years

Average response time: 1 hour

About Jérémie

Fort d'un Master en Management, d'un mindset entrepreneurial et d'une décennie d'expérience en tant que Développeur Full-Stack Senior incluant du conseil stratégique pour des leaders mondiaux (Ubisoft, Air France, Engie, BNP Paribas), je comble le fossé entre stratégie business et ingénierie logicielle.

Aujourd'hui, je conçois des applications scalables et des outils d'aide à la décision. Mon expertise technique couvre :

- Développement Web & Mobile : Expert en JavaScript (React.js, React-Native, Redux).

- Back-End & API : Solide maîtrise de Node.js, Python et FastAPI.

- Data & Cloud : Architecture sur GCP et Azure, utilisant des bases de données SQL (PostgreSQL) et NoSQL (Firestore, MongoDB).

- DevOps : Optimisation de pipelines CI/CD et infrastructure.

Très impliqué dans la communauté tech, je suis co-organisateur du meetup React Paris, favorisant le partage de connaissances. J'applique la philosophie Software Craftsmanship aussi bien dans mes projets techniques que dans la torréfaction de café de spécialité chez Sayang Coffee.
  • English

    Native or bilingual

  • French

    Native or bilingual

  • German

    Basic

  • Indonesian

    Conversational

Can work on-site
Paris (up to 15km)

Experience

  • ENGIE
    Senior Fullstack Developer
    ENERGY AND UTILITIES
    October 2025 - Today (8 months)
    Courbevoie, France
    Contributed to cross-functional projects within ENGIE’s France-Renewables Delivery Team, leveraging multiple technology stacks (React/FastAPI, .NET) across Azure and AWS, while collaborating in a multi-disciplinary environment spanning data, DevOps, cloud, and full-stack development.

    • Project Scope: I maintained and improved two strategic applications for Engie Green: Référentiel Machine and Référentiel Bridage. These platforms serve as critical decision-support tools, designed to simulate and monitor the theoretical energy performance and acoustic impact of wind farm models to optimize the planning and installation of new sites using Python framework FastAPI, React and Azure DevOps.
    • Project Scope: I developed a platform for strategic data valorization called Strat Data, in close collaboration with data engineers and DevOps, to enhance operational process reliability and enable data-driven decision-making using the Python framework FastAPI, React and AWS.

    • Project Scope: I contributed to a feedback management platform used widely across the Engie organization called REX Management Tool, in collaboration with business stakeholders, to enhance knowledge capitalization, improve operational process reliability, and support the dissemination of best practices using DotNet/C#, Angular and AWS.

    Achieved Results:



    - Improved release frequency and system reliability through automated CI/CD workflows.

    - Improve code quality among the team with code reviews, peer-programming, progressive unit and E2E test coverage and strict acceptance criterias

    Key Responsibilities:
    - Full-Stack Development: Built responsive UIs and robust APIs using React, Angular, DotNet/C#, Tailwind, and FastAPI.
    - Data & DevOps: Managed PostgreSQL databases and automated deployment via GitHub Actions and Azure DevOps (CI/CD) and AWS
    - Agile Delivery: Collaborated in a Scrum environment to deliver iterative features for performance tracking.
    PostgreSQL FastAPI Github Actions Pratique de la Méthode Agile SCRUM React.js
  • Owly Studio
    React Native Mobile Developer
    EDUCATION AND E-LEARNING
    April 2025 - Today (1 year and 2 months)
    Paris, France
    Description du projet: Co-fondation d'une startup B2C innovante développant une application mobile propulsée par l'IA Générative, offrant des expériences de storytelling hyper-personnalisées pour les enfants.

    Responsabilités:
    ⁃Pilotage du cycle complet de développement logiciel (SDLC), de la conception de l'architecture système à la mise en production.
    ⁃Gestion de la roadmap produit, traduisant les exigences fonctionnelles en solutions techniques scalables tout en garantissant la qualité du code via des revues systématiques et des méthodologies Agile.

    Résultats:
    - Développement d'une application iOS et Android haute performance utilisant React Native, TypeScript, Expo et NativeWind (Tailwind CSS).
    - Architecture d'une base de données PostgreSQL scalable hébergée sur Supabase (BaaS) pour gérer des modèles de données complexes.
    - Implémentation réussie de Large Language Models (LLMs) pour la génération de contenu personnalisé en temps réel.
    - Mise en place de pipelines CI/CD robustes via GitHub Actions et EAS (Expo Application Services) pour l'automatisation des builds et déploiements.
    - Déploiement du MVP iOS sur TestFlight pour les tests utilisateurs et finalisation de la version Android, avec une architecture prête à supporter une forte montée en charge (scalabilité).
    React Native Expo Supabase PostgreSQL LLM
  • Gandi
    Senior Fullstack Developer
    E-COMMERCE
    October 2020 - March 2025 (4 years and 5 months)
    Paris, France
    As a Senior Fullstack Developer within the Billing squad at Gandi, my perimeter includes our e-commerce website, payment interface, billing dashboard and invoice generation.

    Key Responsibilities:
    - Spearhead the development of new features, graphic redesigns, and bug fixes.
    - Oversee priorities and followups of frontend tasks when it comes to maintenance and technical debt.
    - Coordinate new versions releases with DevOps team.
    - Mentor and keep engaged a junior developer.

    Achieved Results:
    - Designed and developed an on-the-fly PDF invoice generation tool.
    - Technical referent for tracking across the frontend apps at Gandi.
    - Maintained an in-house tool for updating and keeping track of domain prices.
    React.js Typescript SASS/SCSS Node.js Python

Reviews

4,0

Out of 1 rating

FabienF

Fabien

MEETINEO

Reviewed on 12/03/2019

Recommendations

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+2
Former user and 4 other people have recommended Jérémie

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Education

  • Master Management et Ingénierie des Technologies de l'Information et de la Communication
    UPEM
    2015
  • Licence Ingénierie Mathématique et Informatique
    UPEM
    2013

Certifications

Skill set

Categories