Justin Cook
Software Integration Engineer
Rochester, Minnesota, United States
Summary
🤩
Rockstar🎓
Top SchoolJustin Cook is a Software Integration Engineer with over a decade of experience building and integrating software for high-performance computing environments, now applying that expertise at NERSC. He has deep hands-on experience in containerization and build systems, contributing to the Apptainer/Singularity project with OCI integration and cross-distro packaging improvements. His background spans roles from automation and quality leadership to developer-in-test, reflecting a pragmatic focus on reproducible builds, CI/CD, and reducing regression risk for scientific workloads. At Cray he developed enduring performance-measurement features and automated build/test pipelines for complex HPC applications, often identifying issues via close collaboration with users. Based in Rochester, MN, he combines systems-level engineering with practical DevOps instincts honed across startups and research institutions. Less obvious: he has a history of building tooling and example applications specifically to improve test coverage and accelerate developer feedback loops in tightly coupled platform environments.
8 years of coding experience
18 years of employment as a software developer
Bachelor's degree, Computer Science, Bachelor's degree, Computer Science at Winona State University
Github Skills (10)
linux10
build-system10
go10
devops10
containerization10
rpm10
cicd9
automation9
automations9
system-design8
Programming languages (15)
Github contributions (5)
apptainer/singularity
Jan 2019 - Dec 2019
Singularity has been renamed to Apptainer as part of us moving the project to the Linux Foundation. This repo has been persisted as a snapshot right before the changes.
Role in this project:
Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:214 commits, 175 PRs, 108 pushes in 11 months
Contributions summary:Justin primarily contributed to build system improvements, including fixing Fedora EPEL builds and removing wget from RPM spec build requirements. They also implemented and refactored several modules within the `singularity` project, which is a containerization platform focused on HPC and scientific computing. These changes indicate a focus on build processes and integration with various operating systems. The user also added code for OCI integration and general improvements across the projects codebase.
renamedapptainersciencerootless-containersdocker
NERSC/community-software
Jul 2023 - Jan 2025
Contributions:7 reviews, 15 PRs, 15 pushes in 1 year 6 months
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