Liam O'sullivan
Principal Engineer (VM02 Contractor) at Zinkworks
Ireland
Summary
👤
Senior🎓
Top SchoolLiam O'sullivan is a Principal Engineer with nine years of experience building cloud-native and DevOps-first solutions, currently developing AI agentic systems on GCP with Gemini Enterprise. He has led greenfield cloud migrations that replatformed COBOL mainframe services into scalable AWS infrastructures, owning Terraform-based IaC and CI/CD pipelines as the sole DevOps engineer. His background spans telecoms 5G projects, microservice decomposition, Spring Batch ETL, and hands-on backend work, complemented by mentorship and Scrum leadership. Prior roles at IBM reinforced broad full-stack and automation skills, including test frameworks, containerization, and accessibility-focused features. Unusually for an engineer at this level, he began his career in education and production roles, giving him strong communication, teaching and process-driven instincts when guiding teams through complex technical change. Based in Ireland, he combines operational rigor with a knack for turning legacy systems into maintainable, cloud-native services.
9 years of coding experience
6 years of employment as a software developer
Masters of Science, Enterprise Systems, Masters of Science, Enterprise Systems at University of GalwayHigher Diploma, Software Development, Higher Diploma, Software Development at University of Limerick
Github Skills (6)
roku9
brightscript8
hamcrest8
matcher7
testing6
unit-testing5
Programming languages (1)
Github contributions (2)
oneronaut/brsHamcrest
Jun 2017 - Nov 2017
Hamcrest implementation in BrightScript
Contributions:3 releases, 15 commits, 23 PRs in 5 months
matcherassertionstestingbrightscripthamcrest
sky-uk/roku-docs
Feb 2017 - Feb 2017
Contributions:1 push, 1 branch in 1 day
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