Sebastian Mancke
CEO & Founder at snabble
Bonn, North Rhine-Westphalia, Germany
Summary
🤩
Rockstar🎓
Top SchoolSebastian Mancke is a seasoned technology entrepreneur and software leader with 19 years of experience, currently serving as CEO and Founder of snabble in Bonn. He combines deep engineering roots—evident from hands-on back-end work like creating a JWT-based login microservice with multiple authentication backends—with strategic leadership honed over 15+ years as partner, Head of Development and CTO at tarent solutions. Sebastian excels at turning complex authentication and backend challenges into production-ready systems while steering product and company growth. A Diplom Informatik (1.3) from the University of Bonn, he brings a blend of rigorous academic grounding and practical startup execution. Notably, he remains an active builder who still contributes directly to technical foundations even while leading at the executive level.
19 years of coding experience
14 years of employment as a software developer
Diplom, Informatik, 1,3, Diplom, Informatik, 1,3 at Rheinische Friedrich-Wilhelms-Universität Bonn
Github Skills (14)
jwt10
go10
back-end-development10
oauth10
http9
microservices8
microservices-application8
service-design7
caddy7
service-provider7
log-in7
login-page7
golang7
github6
Programming languages (4)
Github contributions (5)
qvest-digital/loginsrv
Nov 2016 - Jan 2020
JWT login microservice with plugable backends such as OAuth2, Google, Github, htpasswd, osiam, ..
Role in this project:
Back-end Developer
Back-end DeveloperContributions:4 releases, 181 commits, 69 PRs in 3 years 2 months
Contributions summary:Sebastian implemented the initial login microservice, including a handler to manage authentication. They integrated various backends such as OAuth2, and simple authentication. The user created the basic structure and functionalities needed for authentication, including token creation and handling, as well as setting up the necessary endpoints.
htpasswdjwtmicroservicesoauthgolang
smancke/mailck
Mar 2017 - Apr 2021
golang library for smtp based email validation
Contributions:43 commits, 8 PRs, 36 pushes in 4 years 2 months
email-validationgolangsmtpemailvalidation
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