Quentin Jaccarino
Staff Software Engineer at Ledger
Paris, Ile-de-France
Summary
🤩
Rockstar🎓
Top SchoolQuentin Jaccarino is a Staff Software Engineer based in Paris with 11 years of hands-on experience spanning full‑stack web development, mobile front-end, and technical leadership. Educated at EPITECH with an exchange at Beijing Jiaotong University, he progressed from C/C++ systems work to shipping user-facing features in JavaScript/TypeScript for high-profile projects like Ledger Live. As former CTO and long-time developer at Tracktl, he combines product-minded ownership with team coaching and a history of mentoring students during his studies. At Ledger he focuses on mobile UI, exchanges and wallet integrations, contributing to improved code quality through TypeScript refactors and pragmatic bug fixes. Known for thriving in project-driven, deadline-heavy environments, he blends startup agility with the discipline of production-grade engineering.
11 years of coding experience
6 years of employment as a software developer
EpitechProgrammation / développeur informatique général, Programmation / développeur informatique général at Beijing Jiaotong University
French, English, Chinese
Github Skills (13)
mobile10
uid10
typescript10
ios10
typescripts10
react-native10
mobile-development10
front-end-development10
ui-design10
android10
android-development10
typescript-types10
walletconnect9
Programming languages (13)
Github contributions (5)
LedgerHQ/ledger-live
May 2022 - Jan 2023
Mono-repository for packages related to Ledger Live and its JavaScript ecosystem.
Role in this project:
Mobile Developer
Mobile DeveloperContributions:1030 reviews, 193 commits, 378 PRs in 8 months
Contributions summary:Quentin primarily contributed to the front-end development of the Ledger Live mobile application. Their commits added new UI components, such as a terms of service footer, and implemented features related to the exchange functionality, including wallet connect and the display of various payment provider logos. The changes also involved bug fixes and refactoring code to use TypeScript for improved code quality and maintainability.
javascriptmonoecosystemledgerledger-live
Tracktl/redux-promise-middleware
May 2018 - Jan 2022
Declarative redux promise middleware
Contributions:3 releases, 70 reviews, 16 commits in 3 years 8 months
redux-promise-middlewarepromise-middlewaredeclarativereduxmiddleware
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