Sébastien Lefevre
Sr Principal at Mastercard
Greater Lyon Area France
Summary
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SeniorSébastien Lefevre is a seasoned Sr Principal engineering leader based in Greater Lyon with 14 years of experience designing core network applications and leading low- to mid-sized teams to deliver practical, reliable systems. He blends hands-on technical application design with people-focused management, aiming to make teams both efficient and happy. His career spans architecture and technology leadership roles at Mastercard and HomeSend, plus long experience in integration and solution architecture at eServGlobal and Netcentrex, giving him deep domain knowledge in communications and payments platforms. Sébastien excels at turning complex telecom and payment requirements into maintainable platforms and developer-friendly tooling. Colleagues describe him as a pragmatic architect who balances technical depth with an eye for developer experience and operational simplicity. He often favors improvements that quietly boost team productivity rather than flashy features, reflecting a bias for lasting engineering leverage.
14 years of coding experience
17 years of employment as a software developer
English
Github Skills (3)
testing6
python6
automation4
Github contributions (1)
seblefevre/testerman
Jan 2012 - Aug 2017
Contributions:81 commits, 1 PR, 14 pushes in 5 years 7 months
testingtest-environmentpythonautomation
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