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Olivier RocancourtOR

Olivier Rocancourt

Supermalter

⚡️ Fullstack Developer - React | Next.js | Node

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

Average response time: 1 hour

Freelancer profile translated to English.
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About Olivier

Hello 👋

Former senior consultant at Octo Technology, I have been assisting clients of all sizes for over 15 years in the design and development of their web projects.

🎯Why hire me?
  • Scoping and development/redesign of your e-commerce site, SaaS, back-office
  • Integration of Design Systems following accessibility and responsive design standards
  • Creation and development of structured, performant, and resilient APIs
  • Automation of deployments (CI/CD) and business processes
  • Team reinforcement, for a short or long mission

My skills
  • Constant technological watch, in-depth knowledge of React.js (9+ years), Next.js (4+ years) and TypeScript
  • Autonomous, versatile, and proactive
  • Flexible and responsive to adapt to changes and new requests
  • Strong interpersonal and listening skills, transparent and supportive in communication
  • Curious and fully engaged daily!

🚀Mastered Technologies
  • Typescript, Ecma/Javascript, Node.js
  • React, Next.js, TailwindCSS, Redux, Zustand, Tanstack Query, RTK Query
  • Node.js, Nest.js, Express.js, GraphQL/REST, PostgreSQL, MongoDB
  • React Testing Library, Cypress.io, Jest, Vitest
  • Figma, Storybook, Atomic Design

I am always looking for new challenges and opportunities, don't hesitate to contact me to discuss your projects and expectations, I always respond very quickly. Looking forward to collaborating with you soon :)
  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • Solteo
    Frontend Developer
    ENERGY AND UTILITIES
    February 2025 - Today (1 year and 4 months)
    Paris, France
    Redesign of Solteo's SaaS for simplifying administrative procedures for solar panel installers in France
    • Redesign of the site's Design System and progressive rollout of pages on the new design via Feature Flags
    • Creation and maintenance of a reusable component library based on Radix UI and Shadcn/ui
    • Development of complex workflows allowing installers to model their future projects in 3D and place solar panels, mounting kits, and obstacles
    • Integration of various Google APIs, including Maps and Solar, enabling installers to instantly view roof irradiance to maximize solar installation efficiency
    • Role management, allowing differentiated display based on user type (administrator, professional installer, or end-user)
    • Responsive Design management (tablet and desktop)
    TypeScript React.js Next.js TailwindCSS Figma
  • Louvre Hotels
    Tech Lead Full Stack
    TRAVEL AND TOURISM
    November 2022 - November 2024 (2 years)
    Paris, France
    Redesign of a cross-group application for employee hotel check-ins and facilitating internal HR processes

    • Redesign of the Design System and progressive page rollout via Feature Flags
    • Isolation of charted and reusable components in a dedicated Git repository
    • Impact study for migrating the codebase to React Server Components / Server Actions
    • Development of the back-for-front with Nest.js, handling authentication and roles
    • Mobile-first responsive design management (mobile, tablet, and desktop)
    • Facilitation of technical workshops and various Agile ceremonies (daily meetings, demos & retrospectives)
    • Participation and facilitation of recruitment interviews for new team developers
    TypeScript React.js Next.js TailwindCSS NestJs
  • Nissan
    Tech Lead Front
    AUTOMOBILE
    July 2021 - April 2022 (9 months)
    Paris, France
    Development from scratch of Nissan's e-commerce site, enabling online vehicle reservations at a group dealership for purchase

    • Development of a search engine with filters, facets, and geolocation
    • Development of the complete reservation process, from vehicle selection to final customer payment
    • Shopping cart management and implementation of an authenticated customer area for profile updates and order tracking
    • Responsive design management (mobile, tablet, and desktop)
    • Internationalization management, initially 2 locales managed by CMS, with progressive rollout of new countries
    • SEO management and performance monitoring of the site, served in SSR via Next.js
    React.js Next.js React Testing Library Figma Scrum

Reviews

5.0

Out of 3 ratings

K

Kévin

CTO - Solteo

Reviewed on 4/2/2026

K

Kévin

Solteo

Several weeks project

-

Reviewed on 5/19/2025

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Education

  • Computer Engineering
    Polytech Paris-Sud (Orsay)
    2009

Certifications

  • Java 6 SE Programmer
    Oracle
    2012
  • Spring-Core
    Zenika
    2013

Skill set

Categories