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Geoffrey CopinGC

Geoffrey Copin

Fullstack Developer

€550/day
Nice, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Geoffrey

Passionate Full-Stack Developer with 5 years of experience. Specializing in TypeScript, Rust, Node.js, React, and PostgreSQL. Passionate about code quality and eager for new technologies. I turn your ideas into reality. Contact me to create together! 💡💻
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Nice (up to 50km)

Experience

  • sylver.dev
    Founder & Software Engineer
    TECH
    May 2022 - Today (4 years and 1 month)
    Paris, France
    • Development from scratch of a source code analysis engine (in Rust) allowing the creation of custom linters for several programming languages in minutes (https://github.com/sylver-dev/sylver-cli).

    • Development of a Saas based on this open-source project (backend in Rust, frontend in TypeScript + React/Solid.js)
    • Writing technical documentation and blog posts to present the project
    Rust PostgreSQL Next.js React.js Typescript Redis
  • Zelros
    Software engineer
    BANKING AND INSURANCE
    May 2021 - September 2022 (1 year and 4 months)
    Paris, France
    • Development of several greenfield backend projects (user data enrichment pipelines, public API, batch recommendation calculations) and evolutionary maintenance of the historical project (recommendation engine). All in TypeScript/Nest.js, with relational databases (PostgreSQL) and document-oriented databases (MongoDB).

    • Development of UIs in TypeScript/Angular.
    • Deployment/monitoring of applications on a Kubernetes cluster.

    • Mentoring junior team members
    Node.js Kubernetes NestJs Angular PostgreSQL RabbitMQ
  • Criteo
    Software Engineer
    SOFTWARE PUBLISHING
    September 2019 - April 2021 (1 year and 8 months)
    • Evolutionary maintenance of the historical product (C#/.net core and Scala/Finatra) and development of greenfield backend projects (creation of a public API, progressive migration of the data model to allow transition to a self-service operating mode), in a context of very high traffic, with strict latency constraints (< 1ms for certain services).

    • Development of public (pixel-perfect) and internal web interfaces for campaign configuration in TypeScript + Angular/React.
    • Deployment and monitoring of applications on a Mesos cluster.

    • Investigation of performance and resilience issues using load testing tools.
    C# Monitoring Prometheus Scala Apache Kafka

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Education

  • Sorbonne University
    2019
    Master Informatique

Skill set (26)

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