Thaddée Y - Principal Engineer at Qonto

Thaddée Y

Principal Engineer at Qonto

Greater Paris Metropolitan Region France

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Summary

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Thaddée Y is a Principal Engineer with 16 years of experience, currently shaping core banking and distributed systems at Qonto after progressing from full-stack development to leading the design of its payment-agnostic ledger and country-specific integrations. He combines deep practical knowledge of synchronization, tooling and learning systems with hands-on delivery of mission-critical features such as Mastercard card processing, SEPA/Instant SEPA, and local IBANs that scaled Qonto’s payments platform. A seasoned architect and mentor, he has coordinated work across dozens of teams and standardized hiring and partner-integration practices to improve velocity and quality. An active open-source contributor, he has improved CodeMirror’s Go support and integrated collaborative editing in ShareJS, reflecting a fondness for orthogonalization and information composition. Based in Greater Paris, he pairs rigorous CS foundations (INSA Lyon) with a track record of turning complex distributed problems into pragmatic, auditable solutions.

16 years of coding experience

7 years of employment as a software developer

Bachelor’s Degree, Physics, Chemistry, Mathematics, Bachelor’s Degree, Physics, Chemistry, Mathematics at Lycée Sainte-Geneviève

3, Computer Science, 3, Computer Science at INSA Lyon - Institut National des Sciences Appliquées de Lyon

INSA de Lyon

English, French, Spanish

Stackoverflow

Stats

1,216reputation

197kreached

22answers

11questions

Github Skills (26)

algorithm10

algorithms10

javascript10

binary-search10

data-structure10

collaborative-editing10

go10

front-end-development10

mergesort10

red-black-tree10

binary-search-tree10

data-structures10

quicksort10

syntax-highlighting10

codemirror10

Programming languages (19)

C#C++BikeshedCSSRustCGoHTML

Github contributions (5)

espadrine/succinct-cybernetics

Sep 2015 - Nov 2020

Computer Science Cheatsheets.

Role in this project:

Back-end Developer

Contributions:65 commits, 3 PRs, 46 pushes in 5 years 3 months

Contributions summary:Thaddée implemented several fundamental algorithms and data structures, including binary search, shuffle, merge sort, quicksort, and a binary search tree, demonstrating a strong foundation in computer science principles. Furthermore, the user developed a red-black tree implementation and a binary heap, showcasing advanced knowledge of data structures and algorithms. These contributions indicate a focus on building core functionalities and data manipulation techniques within the repository's scope of computer science.

pythoncomputer-sciencescience

josephg/ShareJS

Mar 2012 - Mar 2012

Collaborative editing in any app

Role in this project:

Front-end Developer

Contributions:8 commits in 17 days

Contributions summary:Thaddée primarily contributed to the integration of a CodeMirror text editor within the sharejs collaborative editing framework. Their work involved creating a CodeMirror plugin to interact with the sharejs document, efficiently updating the DOM, and handling insert and delete events. Additionally, the user worked on an example page and made small code adjustments, including renaming a function and replacing a snapshot retrieval method with a direct call.

reactelectroncollaborative-editingcollaborativetypescript

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