Brian Barrett
Principal Engineer at Amazon Web Services
Seattle, Washington, United States
Summary
🤩
Rockstar🎓
Top SchoolBrian Barrett is a Principal Engineer at Amazon Web Services with 15+ years building high-performance computing and machine learning networking software, notably enabling HPC on Graviton, Elastic Fabric Adapter, and AWS Nitro offloads. His career spans national labs and cloud scale systems—contributing to Open MPI, launching Road Runner support, and shaping one-sided communication and lightweight tasking for exascale-class systems. He combines deep systems research (PhD-level work on MPI and SHMEM paradigms) with hands-on cloud engineering, driving infrastructure, release automation, and pre-release verification for projects like AWS ParallelCluster. Known for pragmatic fixes that improve portability and debuggability across platforms, he brings a rare blend of low-level C/C++ expertise and large-scale cloud networking design.
15 years of coding experience
7 years of employment as a software developer
Master’s Degree, Computer Science, Master’s Degree, Computer Science at Indiana University BloomingtonBachelor's Degree, Computer Science and Engineering, Bachelor's Degree, Computer Science and Engineering at University of Notre Dame
Github Skills (23)
c-language10
python10
mpi10
c1110
c1710
aws-cloudformation10
aws10
cprogramming-language10
testing9
cicd9
build-system9
bash9
parallel-computing9
infrastructure-as-code9
githubaction-workflow8
Programming languages (8)
Github contributions (5)
open-mpi/ompi
Apr 2017 - Jan 2023
Open MPI main development repository
Role in this project:
Back-end Developer
Back-end DeveloperContributions:5 releases, 747 reviews, 1286 commits in 5 years 10 months
Contributions summary:Brian focused on maintaining and improving Open MPI, primarily by fixing bugs and improving the code quality. Their contributions included fixing platform detection issues on FreeBSD, improving BTL TCP, updating the Authors file, and removing unnecessary atomic or memory barrier macros. The user's work involved modifications to C and C++ code.
openmpichpcmpifortran
aws/aws-parallelcluster
May 2017 - Apr 2018
AWS ParallelCluster is an AWS supported Open Source cluster management tool to deploy and manage HPC clusters in the AWS cloud.
Role in this project:Cloud Engineer / DevOps Engineer
Cloud Engineer / DevOps EngineerContributions:1 release, 28 commits, 40 PRs in 10 months
Contributions summary:Brian primarily contributed to the infrastructure and release process of the AWS ParallelCluster project. Their work included updating version numbers, modifying configuration files, and making changes to the documentation. The user also added a script for converting AMI lists and developed a pre-release verification test suite. Furthermore, they fixed bugs related to configuration and improved the debugging information during cluster creation and release.
awsaws-cloudhpc-cluster
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