Tim Hentenaar - Sr. Cloud Engineer at Apex Systems

Tim Hentenaar

Sr. Cloud Engineer at Apex Systems

Cincinnati, Ohio, United States

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Summary

👤

Senior

🎓

Top School

Tim Hentenaar is a senior cloud and security engineer with nearly two decades of hands-on experience building embedded systems, cloud infrastructure, and data security tooling. He has led principal engineering efforts at banks and networking firms, architecting Vault/UKC integrations, migrating services to AWS/ECS, and mentoring engineers across languages from C to Go and Python. Tim’s roots in low-level C and reverse engineering—contributing to projects like the Open Watcom C compiler and developing userspace tools for proprietary drivers—give him an unusually deep systems perspective for cloud-native work. He designs pragmatic automation and build systems (Gentoo/Portage, Jenkins, containers) and has a track record of turning complex security and firmware challenges into reliable production services. Based in Cincinnati, he pairs a practical, security-first mindset with curiosity that spans compiler internals to scalable AWS operations.

18 years of coding experience

20 years of employment as a software developer

Mt. Healthy High School

Cursussen Nederlandse Taal, Cursussen Nederlandse Taal at University of Amsterdam

English, Dutch, Chinese

Github Skills (6)

c1710

compiler-design10

text-parsing10

parsing10

c1110

type-system9

Programming languages (6)

C++ShellCGoRubyPython

Github contributions (5)

open-watcom/open-watcom-v2

Nov 2020 - Nov 2020

Open Watcom V2.0 - Source code repository, Wiki, Latest Binary build, Archived builds including all installers for download.

Role in this project:

Back-end Developer

Contributions:5 commits, 15 PRs, 3 comments in 4 days

Contributions summary:Tim primarily contributed to the Open Watcom C compiler, focusing on fixing bugs and improving the parsing and compilation of C code. Their work involved correcting issues related to typedefs, union type sizes, and hex float literals. The user refactored existing code and implemented changes to the compiler's core functionality, improving the overall stability and correctness of the C compiler.

installersbuildscode-repositorywatcomwiki

thentenaar/nes-demos

Jun 2014 - Feb 2016

Contributions:20 commits, 46 pushes in 1 year 8 months

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