Michael Gaffney
Principal Engineer at HashiCorp
Cockeysville, Maryland, United States
Summary
🤩
Rockstar🎓
Top SchoolMichael Gaffney is a Principal Engineer with over a decade of experience designing and shipping large-scale, production-ready systems, currently leading architecture on HashiCorp’s Boundary team. He blends hands-on Go backend development with product-minded architecture and team mentoring, having also contributed to Vault and fixed subtle concurrency and SDK issues in that widely used secrets-management project. His career spans senior architecture roles across security and enterprise software, reflecting a consistent focus on identity, access, and credential management for dynamic infrastructure. Known for pragmatic refactors and database-driven domain design, he favors maintainable code and clear abstractions that scale with teams and products. Based in Cockeysville, MD, he pairs a BS in Information Science with deep engineering instincts honed over long tenures at both startups and large organizations.
12 years of coding experience
29 years of employment as a software developer
BS Information Science, BS Information Science at University of PittsburghElectrical Engineering, Electrical Engineering at Villanova University
Github Skills (14)
go10
back-end-development10
secrets10
vault10
database-schema10
testing9
sql9
database-design9
security8
command-line7
cli7
command-line-interface7
protobuffer6
protobuf6
Programming languages (11)
Github contributions (5)
hashicorp/boundary
Mar 2020 - Oct 2022
Boundary enables identity-based access management for dynamic infrastructure.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:788 reviews, 533 commits, 163 PRs in 2 years 8 months
Contributions summary:Michael's commits primarily focused on refactoring code to improve code readability and maintainability, including renaming various functions, structs and variables, likely for Go best practices. The user added a new domain type and made corresponding database schema changes, showcasing database interaction skills. Additionally, they introduced several changes to the credential library and user authentication methods.
boundaryaccess-managementsecurityinfrastructurehashicorp
hashicorp/vault
May 2019 - Oct 2019
A tool for secrets management, encryption as a service, and privileged access management
Role in this project:Back-end Developer
Back-end DeveloperContributions:25 commits, 35 PRs, 50 pushes in 5 months
Contributions summary:Michael primarily contributed to the backend of the HashiCorp Vault project, focusing on code improvements and bug fixes. They addressed a data race in a test related to KVv2 upgrades, ensuring the system's stability during updates. Furthermore, the user added and refined field types within the SDK framework, adding functionality to handle signed duration values, and also worked on dependency upgrades and command-line interface additions. This included modifications to the CLI subcommands for key-value operations.
golanghashicorp-vaultaccess-managementsecurityvault
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