Herman Slatman
Senior Software Engineer at Slatman IT
Overijssel, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolHerman Slatman is a Senior Software Engineer with 11 years of experience building secure backend and mobile systems, currently focused on Go after a strong background in PHP and Python. He holds an MSc in Computer Science with a focus on Computer Security from the University of Twente and combines formal security training with hands-on engineering at Smallstep, where he contributed backend features for the widely used smallstep/cli tooling. An entrepreneur too, he co-founded DistributIT and runs Slatman IT, bringing product-minded leadership to consulting and startup contexts. Herman has a track record of shipping security-focused features—such as ACME EAB management and device-attestation identifiers—and enjoys tackling protocol-level and infrastructure problems. Based in Overijssel, Netherlands, he pairs steady long-term team roles with active open-source contributions that improve developer tooling and cryptographic workflows.
11 years of coding experience
15 years of employment as a software developer
Master of Science (MSc) Computer Science / Computer Security, Master of Science (MSc) Computer Science / Computer Security at University of TwenteGymnasium Science and Technology, Gymnasium Science and Technology at Vechtdal College Hardenberg
English, Dutch, German, French
Github Skills (17)
acme10
security10
go10
command-line-interface9
cryptography9
command-line9
cli9
apidoc8
api8
jwt8
jsonwebtoken8
x5098
oid7
openidc7
openid-connect7
Programming languages (18)
Github contributions (5)
smallstep/cli
Jul 2021 - Jan 2023
🧰 A zero trust swiss army knife for working with X509, OAuth, JWT, OATH OTP, etc.
Role in this project:
Back-end Engineer & Security Engineer
Back-end Engineer & Security EngineerContributions:250 reviews, 148 commits, 141 PRs in 1 year 6 months
Contributions summary:Herman primarily contributed to the backend of the `smallstep/cli` repository, implementing new commands for managing ACME External Account Keys (EAB). These contributions included the creation of new subcommands for adding, listing, and removing EAB keys, as well as the refactoring of existing commands. The user demonstrated expertise in security-related topics, reflected in the addition of features such as permanent identifiers for ACME device attestation.
yubikeysignsshzero-trustsecurity-tools
hslatman/ipstore
Jan 2021 - Nov 2024
Contributions:3 releases, 10 PRs, 17 pushes in 3 years 10 months
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