Dan Callaghan
Sales Associate
Pennsylvania, United States
Summary
🤩
Rockstar🎓
Top SchoolDan Callaghan is a results-driven sales leader with over 37 years of business management experience and 17 years of hands-on industry experience reflected in progressive roles from warehouse associate to vice president of sales. Based in Pennsylvania, he combines deep customer-facing expertise in flooring and fencing with strong organizational, communication, and client-management skills that consistently grow revenue and manage large accounts. Beyond sales, Dan contributes to open-source engineering projects—working on embedded systems, build tooling, and performance-focused ML work—showing an unusual technical curiosity for a seasoned salesperson. He has led production and outside sales teams, driven process improvements like mini debuginfo injection and secure update handling, and optimized systems for performance and reliability. Known for meticulous attention to detail and practical problem-solving, he bridges operational execution and strategic sales planning.
17 years of coding experience
40 years of employment as a software developer
Bachelor of Science, Business, Bachelor of Science, Business at West Chester University of Pennsylvania
Github Skills (45)
caching10
c-language10
package-management10
python10
sendmail10
send-email10
testing10
firmware10
configuration-management10
linux10
software-update10
tflm10
c1110
hardware-acceleration10
ruby10
Programming languages (23)
Github contributions (5)
sup-heliotrope/sup
Mar 2016 - Jun 2022
A curses threads-with-tags style email client (mailing list: supmua@googlegroups.com)
Role in this project:
Backend Developer
Backend DeveloperContributions:3 reviews, 69 commits, 67 PRs in 6 years 3 months
Contributions summary:Dan primarily contributed to bug fixes and code improvements within the Sup email client. They addressed issues related to Ruby version compatibility, specifically deprecation warnings and argument mismatches in logging methods. The user also implemented enhancements, such as preventing shell escaping for attachment filenames and correctly setting the `micalg` parameter for `multipart/signed` messages. Furthermore, they worked on character set handling for attachments and parsing of mailing list headers.
mailing-listemailmailingrubyemail-client
google/CFU-Playground
May 2021 - Aug 2022
Want a faster ML processor? Do it yourself! -- A framework for playing with custom opcodes to accelerate TensorFlow Lite for Microcontrollers (TFLM). . . . . . Online tutorial: https://google.github.io/CFU-Playground/ For reference docs, see the link below.
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:172 reviews, 89 commits, 68 PRs in 1 year 2 months
Contributions summary:Dan primarily focused on modifying the build system and platform definitions within the repository. Their contributions included refactoring build configurations, adding options for different toolchains (Radiant, Oxide), and modifying platform definitions for specific hardware versions. The user also introduced options to execute from LRAM and populate integrated ROM, indicating a focus on optimizing the system's execution environment for performance. Furthermore, the user worked on specialized implementations of convolution operations, showing an attempt to optimize for a specific filter size and exploring the use of hardware CFU acceleration.
machine-learningtflmfasteronline-tutorialtensorflow-lite
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