Justin Berger
CTO at Constructive Realities
Englewood, Colorado, United States
Summary
👤
Senior🎓
Top SchoolJustin Berger is a pragmatic CTO and co-owner with 11 years of professional experience building embedded firmware, real-time systems, and AI-driven software from prototype to production. He combines deep systems-level expertise in C/C++ and .NET with applied machine learning and computer vision foundations developed at Georgia Tech and honed across robotics, firmware for Melco, and consulting engagements. As an open-source contributor he has strengthened core tooling and security—improving CMake server robustness and hardening the x64dbg debugger to prevent deadlocks and UI flooding—showing a focus on reliability and developer experience. Based in Englewood, Colorado, he excels at translating hard real-world problems into elegant, maintainable architectures and enjoys learning more from each challenge to make solutions progressively smarter.
11 years of coding experience
10 years of employment as a software developer
Bachelor of Science, Computer Science, Bachelor of Science, Computer Science at Georgia Institute of Technology
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (21)
debugging10
debug10
c-language10
cmake10
binarydiff10
security10
reverse-engineering10
cprogramming-language10
testing9
windows9
malware9
anti-malware9
64-bit8
x868
x86-648
Programming languages (13)
Github contributions (5)
x64dbg/x64dbg
Jul 2016 - Jul 2016
An open-source user mode debugger for Windows. Optimized for reverse engineering and malware analysis.
Role in this project:
Security Engineer
Security EngineerContributions:28 commits, 5 PRs, 11 comments in 14 days
Contributions summary:Justin primarily focused on enhancing the security of the x64dbg debugger. Their contributions included making locks recursive and re-adding access locks, indicating efforts to improve thread safety and prevent potential deadlocks. They added async and rate limit logic to calls to prevent GUI thread flooding and implemented a silent option for breakpoints.
binary-analysisctfengineeringdisassemblermalware
Kitware/CMake
Feb 2017 - Dec 2017
Mirror of CMake upstream repository
Role in this project:Back-end Developer
Back-end DeveloperContributions:28 commits in 9 months
Contributions summary:Justin primarily focused on enhancing the CMake server functionality. They refactored the server's event loop management and added support for connections that aren't event-based, improving the system's architecture. The user also addressed issues with server processes, including forwarding exit codes from server processes in tests, and resolved mismatched memory allocations, thereby improving stability and reliability. These changes demonstrate a focus on the core server logic and associated testing.
cppcmakeupstream
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