John Farrier
Founder, CEO at Polyrhythm
Dayton Metropolitan Area United States
Summary
👤
Senior🎓
Top SchoolJohn Farrier is a seasoned engineering leader and founder with 25+ years building high-performance, mission-critical software across aerospace, defense, and industrial IoT. He combines product-first startup experience with deep hands-on expertise in modern C++/Python, embedded real-time systems, cloud-native platforms, and DevSecOps to modernize legacy fleets and deliver secure, observable services. He has led architecture and delivery for airworthiness-constrained systems, driven digital transformation and continuous ATO for government programs, and built AI-enabled pipelines and LLM-driven simulation engines. A pragmatist who still dives into performance tuning and incident response, he’s also an active open-source contributor to C++ tooling (e.g., Celero work and vcpkg porting) that reflects his focus on reproducible builds and measurable performance. Comfortable briefing boards and partnering with product, he seeks Director/VP roles to own engineering strategy, scale teams, and raise execution standards.
13 years of coding experience
25 years of employment as a software developer
B.S. Computer Science, B.S. Computer Science at Wright State University
English, French, Japanese
Stackoverflow
573reputation
63kreached
12answers
18questions
Github Skills (23)
benchmark10
c-language10
performance-monitor10
performance-analytics10
lib10
benchmarking10
cmake10
performance-measurement10
package-manager-tool10
performance-analysis10
performance-tuning10
vcpkg10
package-manager10
cpp10
performance-monitoring10
Programming languages (4)
Github contributions (5)
DigitalInBlue/Celero
Jan 2013 - Dec 2022
C++ Benchmark Authoring Library/Framework
Role in this project:
Back-end Developer & Performance Engineer
Back-end Developer & Performance EngineerContributions:31 releases, 1 review, 176 commits in 10 years 1 month
Contributions summary:John contributed to the C++ benchmarking framework by adding output features for result tables and updating existing demos. Their primary focus was on enhancing the framework's capabilities by integrating result table output and ensuring proper performance measurements. These changes involved modifications to core components such as the executor and benchmark information classes. The user also added and tested a transform speed benchmark.
cppmeasurementsc-plus-plusmicrobenchmarksauthoring
microsoft/vcpkg
Oct 2017 - Dec 2022
C++ Library Manager for Windows, Linux, and MacOS
Role in this project:Automation Engineer / Build & Release Engineer
Automation Engineer / Build & Release EngineerContributions:2 reviews, 8 commits, 14 PRs in 5 years 3 months
Contributions summary:John's contributions center on the management and automation of a C++ library package within the vcpkg ecosystem. They added and updated package definitions (portfiles) for the Celero library, including initial porting, build improvements, and version upgrades. The user also maintained CMake configurations and target definitions, alongside dependency management for the Celero library. Their work involved automating build processes and ensuring successful integration within vcpkg.
c-plus-plussetuptoolspackage-managermacoscplusplus
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