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Jérémie PélageJP

Jérémie Pélage

Supermalter

Fullstack Developer | React.js, Node, TypeScript

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

Average response time: 1 hour

Freelancer profile translated to English.
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About Jérémie

Hello 👋🏽

Senior JS Full Stack Developer 🚀

With+8 years of experiencein web development, I specialize infront-end&back-enddevelopment in **JavaScript**, mastering React, Next.js, Node.js, NestJS, TypeScript, and more. I support startups and large companies in the success of their projects by bringing my expertise to their teams.

🤝 Understanding client needs 🌍

I enthusiastically support you in meeting your clients' needs and adapt to different company cultures. Close collaboration is essential to develop quality solutions tailored to the specific needs of each project.

💸 Innovation Tax Credit (CII) Approved

As an approved Innovation Tax Credit (CII) provider, I enable you to benefit from a tax advantage: up to 20% of eligible expenses incurred on your innovative projects can be recovered as a tax credit.
This approval, issued by the Ministry of Higher Education and Research, is a financial lever for your innovation investments.

🧠 Technical Expertise 🛠️

✨ **Front-end Development**: React, Next.js, Sass, Tailwind CSS
🎉 Animations and interactions (GSAP, Scrollmagic)
📚Design System(UI Library, Storybook)
⚡️ **Back-end Development**: Node.js, NestJS, RESTful APIs, GraphQL
✔️ **TypeScript**, integration and end-to-end tests
☁️ Amazon Web Services(AWS)
♿️ Attention toaccessibility and SEO

**📒 Databases**: MySQL, PostgreSQL, MongoDB

🌍Internationalization(i18n)

**✅ Tests**: Jest, Vitest, Playwrigth, CyPress, Storybook

⚙️Automationof recurring tasks (CI / CD)

**🧰 Tools**: Grafana, Prometheus, Webpack, Babel, ESLint, Prettier

📇 **Versioning**: Github, Gitlab

For more information, feel free to contact me!

See you soon,

Jérémie.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • C-981
    Fullstack JS Developer
    AVIATION AND AEROSPACE
    March 2025 - Today (1 year and 3 months)
    San Francisco, United States
    Development of a no-code SaaS solution for factory operators in the aeronautics sector in the United States.

    Project: Full Stack TS/JavaScript Developer on a no-code SaaS platform

    Achievements:
    • Back-End web development in Node.js, MongoDB, GraphQL
    • Front-End web development in React.js / TypeScript on 2 distinct applications: the first allowing the design and configuration of business solutions without writing code, and the second being an operator interface deployed in the factory, allowing users to interact with chatbots collecting their responses in real-time
    • Modeling and management of complex flows via XState
    • Development of new features and product evolutions in line with business needs
    • Corrective and evolutionary maintenance of both applications
    • Design and maintenance of GraphQL APIs for communication between the front and back layers
    • Writing unit and end-to-end tests to ensure the stability and reliability of the platform
    • Working in Agile methodology
    React.js Typescript MongoDB GraphQL Node.js
  • FlexBuilding
    React/Node.js Developer
    REAL ESTATE
    October 2022 - March 2025 (2 years and 4 months)
    Asnières-sur-Seine, France
    Development from scratch of web SaaS solutions to complement an existing mobile application in the office building management sector (PropTech).

    Project 1: Full Stack TS/JavaScript Developer on FlexBuilding Console Admin

    Achievements:
    • Technical architecture design and stack selection
    • Back-End web development in NestJS, PostgreSQL, SQL Server (hexagonal architecture)
    • Front-End web development in Next.js, Tailwind CSS
    • Development from scratch of a complete SaaS dashboard: activity management, KPIs, charts, virtual tour module, and room booking scheduler
    • API Integration: development and maintenance of programming interfaces to connect the platform to third-party services in the FlexBuilding ecosystem (catering, sports, mobility, etc.)
    • Implementation and management of CI/CD for reliable and continuous deployments
    • Writing unit and end-to-end tests (Vitest, Playwright)

    Project 2: Full Stack TS/JavaScript Lead Developer on InterfaceGroup

    Achievements:
    • Back-End web development in NestJS, PostgreSQL, SQL Server
    • Front-End web development in Next.js, Tailwind CSS
    • Development from scratch of a customer onboarding SaaS allowing import, visualization, and organization of data before database integration
    • Development of an Excel/CSV file import module with formatting and insertion into the database via the backend
    • Reuse and adaptation of common modules with the Admin Console (charts, preview KPIs)
    • Writing unit and end-to-end tests (Vitest, Playwright)
    • Evolutions and maintenance of both platforms in parallel
    • Working in Agile methodology
    React.js Node.js Typescript NestJs Next.js
  • May
    Fullstack JS Developer
    BANKING AND INSURANCE
    May 2023 - December 2023 (7 months)
    Paris, France
    Web/mobile development on an HR SaaS application for managing all employee benefits within a single solution.

    Achievements:
    • Back-End web development in NestJS, PostgreSQL
    • Front-End web development in React.js / Next.js
    • Mobile development in React Native
    • Corrective and evolutionary maintenance of the application
    • Writing unit and end-to-end tests to ensure the stability and reliability of the solution
    • Working in Agile methodology within a product team
    Typescript React.js Node.js Amazon Web Services NestJs

Reviews

5.0

Out of 2 ratings

S

Solenne

C-981

Reviewed on 6/16/2025

Very good collaboration with Jérémie. Serious freelancer, good communication, attentive and eager to do well. I recommend without hesitation!
JeromeJ

Jerome

Yolo

Reviewed on 11/25/2020

Very good developer, available and qualified.

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Education

  • Master II - Digital Solutions and Data Manager
    ENI School of Computer Science
    2019
  • Bachelor - Application Designer Developer
    ENI School of Computer Science
    2018

Certifications

  • CII Approval
    National Expertise Center for Innovation Tax Credit
    2025
    Innovation

Skill set

Categories