Tomas Zilinskas

At NATO NCI-A in Ramstein, I administer secure RHEL and Windows environments, support NVIDIA AI platforms and LLMs, and maintain Anaconda, JupyterLab, KNIME, Power BI, Oracle, and MongoDB infrastructure.

Previously at Cognizant Technology, I supported 700+ users across hybrid Microsoft 365 and Azure AD environments. I configured Microsoft Defender, Sentinel threat hunting, Purview DLP, Conditional Access, PIM, JIT access, identity audits, and PowerShell-driven compliance workflows.

I've also built secure Python APIs with OAuth2 and JWT, automated infrastructure work with PowerShell, Python, Bash, and CI/CD pipelines, and delivered data security, cloud IAM, and enterprise support work across Lithuania and the UK.