Olivier Colonna
Staff Software Engineer
Salary / Daily rate
64210 Bidart, France
Freelance, open to permanent contract
Remote only
Skills
Languages
About me
Intro
Seasoned Full-Stack JavaScript Engineer with over 15 years of experience delivering robust, scalable web applications across finance, media, and technology sectors. Expert in TypeScript, React, Next.js, and GraphQL, with a strong foundation in component architecture, CI/CD, and performance optimization. Proven leader with experience as a Staff Engineer, Lead Developer, and Technical Architect, known for building reusable design systems, mentoring teams, and driving technical strategy in cross-fu
Work experience
Indi Hacker
Self Employed
Jan 2025 - Apr 2026
1 year 4 months
Remote
Building and shipping independent products: outwrite.app (publishing platform for indie writers), Ombience (meditation & audio), and hour.is (content-heavy time & city-facts site monetized with ads) • Full-stack TypeScript on Cloudflare (Workers/Pages) using React Router, Supabase (Auth/Postgres), and Stripe; focused on performance, SEO, and multi-tenant routing • Designed pricing and payments flows (subscriptions & credit
Cint
Jan 2022 - Jan 2025
3 years 1 month
London, UK
Staff Software Engineer
Apr 2023 - Jan 2025
1 year 10 months
London, UK
Built 3 greenfield platforms: Cint Exchange, Developer Portal, and Admin Hub using Next.js, Tailwind CSS, and Radix UI Architected internationalized, responsive applications with light/dark theme support Major contributor to the Design System Core, ensuring scalable, reusable components Improved CI/CD pipelines with GitHub Actions; Dockerized all applications for consistent deployment environments
Senior Software Engineer
Jan 2022 - Apr 2023
1 year 4 months
London, UK
Senior Software Engineer
Lucid, LLC
Jul 2020 - Dec 2021
1 year 6 months
London, UK
Developed and maintained a Node.js GraphQL middleware layer to orchestrate APIs Architected React and TypeScript-based frontend solutions from the ground up Advocated GraphQL best practices and efficient data modeling strategies
Senior JavaScript Developer
Nationwide Building Society
Mar 2020 - May 2020
3 months
London, UK
ES7, React, Typescript, Webpack, Express, GraphQL, React-Apollo. Built React.js applications within a monorepo architecture Developed Node.js GraphQL middleware for back-end service integration Ensured high-quality code using Jest and robust unit testing
Senior JavaScript Developer
Mettle
Oct 2017 - Mar 2020
2 years 6 months
London, UK
ES7, React, Redux, Typescript, Webpack, Express, GraphQL, React-Apollo Built the Platinum React component library from scratch for shared internal use Developed “Ops-Tool” – a custom tool to streamline internal operational processes Worked extensively with GraphQL, Lodash, Jest, and Cypress
Senior Javascript Developer
DriveTribe
May 2016 - Sep 2017
1 year 5 months
London, UK
ES7, webpack, reselect, redux, react, universal app, flow, recharts.js, slate.js, Node.js Led a team of 2 engineers to develop the editorial platform “Studio” Built a universal React/Redux application using FlowType and Express Collaborated with back-end engineers to define RESTful APIs Delivered a fully responsive app across platforms
Web Developer Specialist
Accenture Federal Services
Sep 2014 - May 2016
1 year 9 months
London, UK
Lead Developer @ Lloyd Banking Group - React.js, ES6, Webpack, Babeljs, Flux.js Led a 9-person team to develop a web platform using React, Flux, ES6, Webpack Implemented ARIA standards to improve accessibility Set coding standards and developed reusable React component libraries Technical Mobile Architect @ BNP Paribas Fortis - Angular.js, Ionic, Phonegap, Node.js Led a team of 4 in designing a modular, feature-based architecture Delivered 4 PoCs comparing Angular, Ionic, Gulp, Cordova for executive review Trained internal developers on Ionic and hybrid app development Built a cross-platform HTML5 hybrid app Lead Developer @ Fjord - Angular.js, Node.js, Gulp, Sass
Front End Developer
Freelance
Mar 2014 - Jul 2014
5 months
Région de Paris, France
Angular.js
Lead Developer Web Mobile
Bouygues Telecom
Apr 2012 - Feb 2014
1 year 11 months
Paris Area, France
Front End Developer
Degetel
Nov 2011 - Mar 2012
5 months
Paris Area, France
Front End Developer
Maserati
Jul 2011 - Nov 2011
5 months
Paris Area, France
Education
Paris School of Business
Master, Web Marketing
2007 - 2009
2 years 1 month
INSEEC Grande Ecole
Licence, Marketing
2003 - 2004
1 year 1 month
Notre-Dame "Les Oiseaux" de Verneuil
BTS, Management des unités commerciales
2000 - 2002
2 years 1 month
Licenses & certifications
Programming with Google Go
Issued: Apr 2021
Go: The Complete Developer's Guide (Golang)
Issued: Jan 2021