David Mulder
Senior Software Engineer at openSUSE Project
Orem, Utah, United States
Summary
🤩
Rockstar🎓
Top SchoolDavid Mulder is a Senior Software Engineer with 15+ years focused on open source identity, security, and Windows interoperability, currently contributing to Samba and leading the Himmelblau project — a Rust-based Entra ID/Intune connector for Linux. At SUSE he has deep experience integrating Linux systems with Active Directory, improving SSSD back-end AD GPO handling and reliability, and shipping SMB2 services and AD-compatible domain controller features. His background spans systems-level C/C++ and Rust engineering, Objective-C macOS integration, and automation tooling that saved thousands of hours at Dell. A master's-educated developer and long-time openSUSE/Samba contributor, he blends production-grade protocol work with practical tooling that bridges Windows and Linux ecosystems. An under-the-radar strength is his knack for turning complex directory and policy semantics into robust, test-covered code that enterprises can deploy reliably.
16 years of coding experience
9 years of employment as a software developer
Master of Computer Science, Computer Science, 3.91 GPA, Master of Computer Science, Computer Science, 3.91 GPA at Utah Valley University
German
Stackoverflow
21reputation
5kreached
1answer
0questions
Github Skills (13)
c1710
active-directory10
c1110
ldap9
security8
authorization7
system-administration7
authorizations7
authentication7
user-authentication7
dom-events6
javascript6
cross-browser6
Programming languages (17)
Github contributions (5)
SSSD/sssd
Oct 2019 - Aug 2022
A daemon to manage identity, authentication and authorization for centrally-managed systems.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:6 commits, 2 PRs, 18 comments in 2 years 11 months
Contributions summary:David contributed to the `sssd/sssd` repository by implementing and modifying back-end components related to Active Directory GPO integration and the caching of computer and host data. They introduced features for handling host entries from GPO security filters and addressed issues with computer lookup failures. Furthermore, the user wrote and modified unit tests to ensure code functionality and the correct integration of Active Directory group policy objects. These contributions focused on enhancing the system's ability to manage identity, authentication, and authorization within a centrally-managed Active Directory environment.
authenticationauthorization
himmelblau-idm/himmelblau
May 2023 - Jul 2026
Cloud Identity, MFA and Compliance for Linux
Contributions:81 releases, 70 reviews, 767 PRs in 3 years 2 months
linuxentra-idintuneopenid-connect
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