Nicolas Klein
Co-founder & CTO at Pixpay
Paris, Ile-de-France
Summary
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SeniorNicolas Klein is a seasoned technology executive and two-time co-founder with a decade of CTO experience and two exits totaling over €50M. Based in Paris, he is currently CTO and co-founder of Pixpay, having previously led engineering and product as CTO/co-founder at MonDocteur and held senior technical leadership roles across Unibet, Eurosport and other digital media businesses. He combines hands-on engineering—from first commits to scalable production systems—with strategic product vision for consumer fintech and health-tech platforms. Skilled at building cross-functional teams and resilient infrastructures, he has a track record of turning regulated, user-facing services into high-growth, acquirable companies. Nicolas’s background spans product management to internet IT leadership, giving him a pragmatic view of how technology drives business outcomes. He’s known for staying deeply involved in execution even while steering company strategy, a trait that helped deliver rapid growth and successful exits.
11 years of coding experience
15 years of employment as a software developer
Github Skills (57)
crashlytics10
storage10
authentication10
nativescript10
facebook10
google10
firestore10
nativescript-plugin10
admob10
realtime-database10
firebase10
analytics9
andriod9
machine-learning9
tensorflow9
Programming languages (5)
Github contributions (5)
nickykln/schemats
Dec 2018 - Aug 2022
Generate typescript interface definitions from SQL database schema
Contributions:6 pushes in 3 years 9 months
sql-databasesqltypescript-interfacesqlitenodejs
pixpayDev/story_view
Feb 2021 - Sep 2021
Story view for apps with stories.
Contributions:3 PRs, 7 pushes, 1 branch in 7 months
kotlinandroid
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