Doc Walker
Principal Cyber Software Engineer at Northrop Grumman Mission Systems, Inc.
Loveland, Ohio, United States
Summary
👤
Senior🎓
Top SchoolDoc Walker is a Principal Cyber Software Engineer with 13 years of experience building and testing cyber defense tools and conducting malware analysis, currently leading efforts at Northrop Grumman Mission Systems. He spent nearly a decade at Booz Allen Hamilton honing offensive and defensive cyber skills while evolving from hands-on developer to senior consultant and technical lead. Doc pairs a computer science foundation from UT Austin with an MBA from UT San Antonio, combining technical depth with strategic, business-aware decision making. He contributes to embedded/IoT open source—adapting the ModbusMaster Arduino library for AVR and SAM architectures—demonstrating attention to low-level compatibility and cross-platform robustness. Known for pragmatic problem-solving, he focuses on producing auditable, maintainable solutions that bridge firmware, tooling, and enterprise cyber operations. Based in Loveland, Ohio, he aims to continuously expand his skill set while delivering secure, production-ready systems.
13 years of coding experience
University of Texas at San AntonioBachelor of Science (B.S.), Computer Science, Bachelor of Science (B.S.), Computer Science at The University of Texas at Austin
Github Skills (10)
avr10
embedded10
c-language10
cprogramming-language10
sys10
arduino10
modbus10
sam10
iot8
uart8
Programming languages (5)
Github contributions (5)
4-20ma/ModbusMaster
Dec 2012 - Sep 2016
Enlighten your Arduino to be a Modbus master
Role in this project:
Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:2 releases, 154 commits, 62 PRs in 3 years 9 months
Contributions summary:Doc primarily contributed to the ModbusMaster library, focusing on adapting it for different microprocessors, specifically AVR and SAM architectures. They implemented fixes to address compatibility issues with specific hardware platforms by incorporating architecture-specific conditional compilation. The user also worked on code improvements, refactoring, and documentation updates to maintain and enhance the library's functionality and usability.
serial-portsenlightenmodbus-masterserialarduino-library
4-20ma/i2c_rtc_m41t00s
Dec 2012 - Oct 2016
Arduino class library for ST M41T00S real-time clock
Contributions:19 commits, 12 PRs, 6 pushes in 3 years 9 months
clockclass-libraryarduino-libraryarduinoreal-time-clock
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