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Jérémy Grenet
Verified Expert in Engineering
Software Developer
Paris, France
Toptal member since December 20, 2021
Bio
After obtaining a master's degree in technology and two years working in a web agency, Jérémy's moved to freelance work at the beginning of 2021. Since he started this journey as a front-end developer, he's had the opportunity to work on extensive and diverse projects with great challenges. From simple showcase sites to complex and modern web applications, Jérémy learned to master the core technologies to deliver the best work to his clients consistently.
Portfolio
Freelance
React, Webpack, Babel, JavaScript, MobX, Redux, Git, Sass...
Kanji
React, NestJS, AWS IoT, Solidity, Ethers.js, MetaMask, Front-end...
Eliadis (Freelance Mission)
React, Webpack, TypeScript, HTML5, CSS, Git, MobX, Material UI...
Experience
- JavaScript - 8 years
- Git - 6 years
- CSS3 - 6 years
- React - 5 years
- TypeScript - 4 years
- Webpack - 4 years
- Material UI - 3 years
- Next.js - 2 years
Preferred Environment
MacOS, Visual Studio Code (VS Code)
The most amazing...
...project I've been part of is the development of a Web3 SaaS platform (NFT creation no-code app) from authentication to smart contract interaction.
Work Experience
Front-end Developer
2021 - PRESENT
Freelance
- Developed web applications for my clients using front-end technologies like HTML, CSS, and JavaScript with React.
- Advised my clients in taking the right front-end technical decisions.
- Developed showcase websites for web and mobile screens.
Technologies: React, Webpack, Babel, JavaScript, MobX, Redux, Git, Sass, Front-end Development, CSS, HTML
Lead Front-end Developer
2022 - 2023
Kanji
- Booted the front-end project from technology choices to create all the foundations of the different front-end projects.
- Built the company's design system. I created the project, organized components, and created storybook sorties and unit tests.
- Developed the app and worked on aspects ranging from day-to-day feature implementation to bug fixing and unit testing. I also managed and organized the work of the whole front-end team.
- Managed the entire development teamwork at a macro level by being the scrum master for a few months.
- Designed and integrated new feature proposals by doing mockups on Figma.
Technologies: React, NestJS, AWS IoT, Solidity, Ethers.js, MetaMask, Front-end, User Interface (UI), User Experience (UX), English, Scrum, Tailwind CSS, CSS, HTML5, TypeScript, Storybook, Next.js, Front-end Development, JavaScript, HTML
Lead React Front-end Developer
2021 - 2021
Eliadis (Freelance Mission)
- Developed a new product under React that allows selected users to manage the different entities of a company—like users and mailboxes—for the client.
- Architectured and booted the project. Took decisions regarding the technical stack.
- Developed the solution responsively using HTML and CSS.
Technologies: React, Webpack, TypeScript, HTML5, CSS, Git, MobX, Material UI, Front-end Development, JavaScript, HTML
React Front-end Developer
2021 - 2021
PMU (Freelance Mission)
- Developed and maintained the different company websites.
- Participated in the migration of all the tag tracking to Google Tag Manager.
- Integrated the solutions responsively using HTML and CSS.
- Participated in agile ceremonies like daily meetings and backlog refinements.
Technologies: React, Webpack, TypeScript, HTML5, CSS3, Git, Jest, Backbone.js, Jakarta Server Pages (JSP), Front-end Development, JavaScript, CSS, HTML
React Front-end Developer
2020 - 2021
NDA Project (via Infinite Square)
- Developed a new product under React that allows a user to match with opportunities inside his own company.
- Built, tested, and maintained the client's design system built using Material-UI.
- Integrated the solutions responsively using HTML and CSS.
- Participated in different agile meetings, namely daily meetings and backlog refinements.
Technologies: React, Webpack, TypeScript, MobX, HTML5, CSS3, Git, Jest, Material UI, Front-end Development, JavaScript, CSS, HTML
Front-end Developer
2018 - 2021
Infinite Square
- Participated in many projects as a front-end developer. Some were purely integration, and others involved more complex JavaScript web apps' development.
- Participated in different project architecture and project boots.
- Wrote articles on the company's blog about front-end development.
Technologies: React, Webpack, Angular, TypeScript, HTML5, CSS3, Redux, MobX, Git, Front-end Development, JavaScript, CSS, HTML
React Front-end Developer
2020 - 2020
Pernod Ricard (via Infinite Square)
- Developed a web application similar to a calendar app, allowing the client to manage an internal B2B event.
- Architectured and booted the project. I took technological decisions about the front-end part.
- Integrated the solution responsively using HTML and CSS.
- Reviewed other developers' pull requests as part of my role.
Technologies: React, Webpack, TypeScript, Babel, HTML5, CSS3, Git, Sass, Front-end Development, JavaScript, CSS, HTML
React and AngularJS Front-end Developer
2019 - 2019
LumApps (via Infinite Square)
- Helped the client in the development of new widgets integrating Microsoft Office 365 services using React and AngularJS.
- Integrated the widgets responsively using HTML and CSS.
- Developed a Microsoft Word and Excel plugin allowing the export of the document content to the LumApps platform.
Technologies: React, AngularJS, Webpack, TypeScript, HTML5, CSS3, Redux, Git, Sass, Front-end Development, JavaScript, CSS, HTML
Front-end React Developer
2018 - 2019
Hokifish (via Infinite Square)
- Developed the V2 of a storage SaaS product similar to other products like Dropbox or WeTransfer using React for the company. The particularity was that it was using the client's Azure Storage.
- Integrated the new design based on the new models provided. Performed HTML and CSS responsive integration.
- Built the showcase site of the product using Parallax.
Technologies: CSS3, HTML5, JavaScript, React, React Redux, Git, TypeScript, Webpack, Front-end Development, CSS, HTML
Front-end Developer
2018 - 2018
Mr Marguerite
- Developed the landing page responsively using HTML and CSS.
- Built the project resources and assets using Grunt.
- Discussed with the client to get his feedback on each version delivered.
Technologies: HTML5, CSS, Sass, Bootstrap, Grunt, Git, JavaScript, Front-end Development, HTML
Full-stack Developer (Internship)
2016 - 2017
Meolia
- Architected and booted the project. I was responsible for taking all the technologies decisions.
- Developed the solution responsively using HTML and CSS.
- Built the project using JQuery and performed the mapping using Leaflet.js and the Google Maps API.
Technologies: HTML5, CSS3, jQuery, Google Maps API, Leaflet, FTP, PHP, SQL, MySQL, Front-end Development, JavaScript, CSS, HTML
Full-stack Developer (Internship)
2015 - 2015
MG Mobile
- Developed and integrated showcase websites responsively for web and mobile screens.
- Defined the databases schemas for several projects.
- Wrote some administration SQL scripts to manage and clean the databases.
- Tracked and fixed bugs during acceptance testing sessions.
Technologies: HTML5, CSS3, jQuery, PHP, SQL, MySQL, FTP, Front-end Development, JavaScript, CSS, HTML
Experience
Cytrin Landing Page
I developed the landing page of a fake project called Cytrin and to make the website fully responsive, I used TailwindCSS and React. For this project, I also designed mockups using Figma.
Education
2014 - 2019
Master's Degree in Computer Science
EPITECH Paris - Le Kremlin-Bicêtre, Paris, France
Skills
Libraries/APIs
React, MobX, jQuery, Mantine, Node.js, React Redux, Backbone.js, Google Maps API, Leaflet, Three.js
Tools
Git, Webpack, Babel, Snowpack, Grunt, MetaMask
Languages
HTML5, CSS3, JavaScript, TypeScript, CSS, HTML, Sass, PHP, SQL, Solidity
Frameworks
Angular, Material UI, Jest, Next.js, Express.js, AngularJS, Redux, Jakarta Server Pages (JSP), Bootstrap, Tailwind CSS, NestJS
Storage
MySQL, MongoDB
Paradigms
Scrum
Platforms
AWS IoT
Other
Front-end, User Interface (UI), User Experience (UX), Front-end Development, Web3, Ethers.js, FTP, English, Storybook, Crypto
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