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Elliot Négrel-Jerzy

Frontend engineer with an MSc in Computer Graphics & Vision and several years of production experience building React/TypeScript interfaces for geospatial and data-heavy platforms. Comfortable partnering closely with product, design, and engineering to ship technically complex, high-quality UI, from rendering-layer optimisation to end-to-end frontend architecture.

Open to opportunities ·

Illustrated portrait of Elliot Négrel-Jerzy, a smiling man with dark hair in a blue jacket, drawn in flat blue tones

Languages

  • FrenchNative, C2
  • EnglishAdvanced, C1
  • SpanishAdvanced, C1
  • PolishUpper-intermediate, B2
  • GermanIntermediate, B1

Experience, 5 items

  1. from 2026

    Macrodata Labs

    Founding Engineer, Frontend & UX

    Paris, FrancePermanent

    • Built the frontend and design of Macrodata Labs' data observability platform, enabling AI teams to process, understand, and scale multimodal datasets

    Skills: React, TypeScript, Next.js

  2. February 2025 to March 2026

    Kanop

    Frontend Engineer

    Paris, FranceContract

    • De facto UI/UX lead: owned frontend architecture, design language, and product experience across the platform
    • Engineered geospatial dashboards for carbon monitoring at scale; built a production LLM-powered chat interface with real-time streaming Markdown and full PWA support
    • Unified authentication across all Kanop apps into a centralised SSO system

    Skills: React, TypeScript, GCP, Framer Motion, Mapbox GL, D3.js, LLM, GitLab CI/CD

  3. July 2024 to February 2025

    Tauniqo.ai

    Full-Stack Engineer

    Barcelona, SpainFull-time

    • Sole frontend lead: rewrote the entire platform in React/Redux/i18n, delivering significant performance gains
    • Built a Google Slides-style presentation editor from scratch, with complex state management and deep rendering optimisations
    • Containerised backend services using Docker, reducing developer onboarding time by 70%

    Skills: React, Redux, Framer Motion, Docker, Django, i18n

  4. November 2023 to May 2024

    Escape Technologies

    Full-Stack Engineer

    Paris, FranceFull-time

    • Designed and built a Svelte component library aligned with Material UI guidelines, increasing development speed and design consistency
    • Researched and implemented a contrast-aware palette generation algorithm using oklab/oklch colourspaces, significantly improving aesthetics and WCAG compliance
    • Redesigned the company website, driving a 30% increase in traffic and 20% increase in conversion

    Skills: Svelte, GraphQL, Node.js, Figma, UI/UX

  5. June 2022 to September 2023

    Kanop

    Frontend Engineer (Freelance & Internship)

    Paris, France

    • Pioneered SaaS web applications using React, TypeScript, D3.js, and Mapbox GL for advanced geospatial data visualisations
    • Automated frontend/backend type synchronisation via RTK Query codegen; led major website overhauls improving navigation and SEO

    Skills: React, TypeScript, Mapbox GL, D3.js, Node.js, RTK Query

Education, 3 items

  1. 2020 to 2023

    ENSEEIHT, INP Toulouse

    Computer Science & Applied Mathematics · MEng

    Toulouse, France

  2. 2022 to 2023

    Alpen-Adria-Universität Klagenfurt

    Computer Graphics & Vision · MSc

    Klagenfurt, AustriaExchange year

  3. 2018 to 2020

    Lycée Déodat de Séverac

    Mathematics & Physics · CPGE PCSI/PSI*

Skills

Primary
React, TypeScript, JavaScript, frontend architecture, UI/UX design, design systems
Secondary
Node.js, Next.js, GraphQL, Redux, Svelte, D3.js, Mapbox GL, WebSockets, Framer Motion, Django, Docker, GCP, GitLab CI/CD
Domain
computer graphics and rendering, geospatial and data visualisation, accessibility (WCAG), colour science (oklab/oklch)
Testing
Jest, Playwright
Process
Agile/Scrum
Tools
Figma, Git, Claude Code