Freelancer profile translated to English.
Back to original languageAbout Colin
Web developer specializing in front-end (React, Vue, etc.). I have been working in this field since 2010 and now offer my professional services as a freelancer to optimize and develop your projects with the most suitable technologies for the need.
Do you want to start a new web project or optimize the performance of an existing one?
Do you need an experienced developer to mentor a team?
Here are the tasks I regularly perform:
- Creation of performant and accessible applications.
- Development of features in React, Vue, JavaScript, or TypeScript.
- Analysis of front-end architecture (technical audit, performance, accessibility, etc.).
- Implementation of Progressive Web Apps (PWAs).
- Web performance optimization strategy.
- Advice and training in performance optimization (front-end, tools, and back-end).
- Back-end development and tooling (TypeScript, Go, C, etc.).
- Video game development (C, C#, TypeScript, WebGL, WebGPU, Unity).
I can take on short-term assignments or long-term collaborations.
My clients appreciate the quality of my work, my attention to detail, and my teaching skills.
Feel free to contact me :)
PS: For more details on my skills and experience, my CV is available on my website.
French
Native or bilingual
English
Native or bilingual
Can work on-site
Paris (up to 50km)
Experience
- NDA clientFront-end developerSOFTWARE PUBLISHINGJune 2025 - August 2025 (2 months)Paris, FranceDesign of a synchronization engine between the front-end and the back-end for a real-time collaborative application. The system is the central data layer for the application.- Tasks: cache server data on the client, allow the app to work offline, and handle optimistic UI updates in a performant way.- Stack: Vue3, TypeScript, IndexedDB, Service Workers, PWA, PHP, Go.
- PrecogsFront-end engineerMECHANICAL ENGINEERINGFebruary 2023 - October 2023 (8 months)Paris, FranceDevelopment of new features in an existing marketplace application. I worked mainly as a front-end engineer, collaborating with the existing team to maintain the legacy application, while bootstrapping the new version with a fresh stack.- Tasks: Implement performance improvements (rendering, memory usage, etc.), provide advice to simplify the architecture, UX improvements, and overall code architecture review.- Stack: Vue, TypeScript, GraphGL, Cypress, Storybook, PWA, Node, AWS (mostly lambda and S3), PostgreSQL
- Self EmployedWeb engineer & game programmerVIDEO GAMES AND ANIMATIONMay 2020 - Today (6 years and 1 month)
Web dev
I've been working with clients as a freelancer for a few years now, here are a few tech stacks I've used (mostly frontend, but also backend/cloud and performance/profiling):- HTML/CSS/JS (and yeah TS and other tools)- Vue/React/etc (I've been around the block for a while, and I've seen many frameworks come and go at this point, haha)- Node/Go/C/etc for the backend- Progressive Web Apps (a lot of them)- Worked with AWS, GCP, etcThe projects I can share publicly are visible here: https://colinbellino.com/webGame dev
Development & design of multiple small and video games to create a small portfolio and have fun doing so in the process. I've had to learn a lot of important skills from design techniques to programming languages and hardware architectures. I've been really enjoying making things from scratch, building the engine as I work on the game, diving into the lower-level stuff, and streaming some of my work!I also participated in a lot of game jams when possible since I find it a great way to hone one's game design skills and meet interesting people to work with.Most of my work in games is visible on my itch profile: https://colinbellino.itch.io
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Education
- Self-taughtN/C1988