Systems Administrator - IT Operations Leader

Brian S. Johnson

Concord, CA 925-***-**** ***************@*****.***

linkedin.com/in/brianjohnson123a443

Professional Summary

Systems Administrator / IT Operations professional with experience in endpoint management, Microsoft 365 administration, access control, security response, documentation, onboarding/offboarding, and user support. Strong background in regulated and compliance focused environments, including healthcare, finance, and audit ready IT operations. Known for building clear processes, improving documentation, supporting leadership visibility, and translating technical issues into practical next steps for users and managers. Core Skills

• Systems Administration: Microsoft 365, Exchange Online, Active Directory, Entra ID, SharePoint, OneDrive

• Endpoint & Security: Endpoint management, SentinelOne, SlashNext, Proofpoint, CIS Benchmarks, patch reporting

• Documentation & Process: Confluence, Jira, IT Glue, SOPs, access request tracking, audit ready ticket notes

• Automation & Support: Power Automate, PowerShell, user support, onboarding/offboarding, vendor coordination

• Business Systems: Zoom, Slack, Bitbucket, Freshdesk, printer/scanner support, secure file transfer and access request workflows

Professional Experience

L.N. Curtis & Sons - Helpdesk Lead

Walnut Creek, CA Jan 2026 - Present

• Support IT operations across multiple locations, including endpoint support, Microsoft 365 administration, account access, printer/scanner support, troubleshooting, and escalations.

• Build Confluence documentation for device setup, access requests, offboarding, ticket documentation, and repeatable support workflows.

• Supported business users by translating recurring technical issues into documented workflows, training materials, and process improvements for cross-functional teams. Coleman IT Group - Systems Administrator (Contract) Pleasant Hill, CA Aug 2025 - Dec 2025

• Provided systems administration and operational support across multiple client environments with varied tools, configurations, and business requirements.

• Supported endpoint management, account access, troubleshooting, user support, and documentation in client environments.

• Created and improved documentation for multiple processes and systems, helping establish a living knowledge base and reduce reliance on tribal knowledge. Toyon Associates, Inc. - Systems Administrator

Concord, CA 2019 - 2025

• Managed companywide Windows 11 migration, including image testing, warranty replacement scheduling, in place upgrades, MSP coordination, user support, and rollout communication.

• Implemented and maintained CIS security benchmarks across endpoints, supporting compliance goals and reducing endpoint configuration risk.

• Monitored and responded to SentinelOne and SlashNext alerts, documented security incidents, and coordinated response steps with MSP partners.

• Led annual Disaster Recovery as a Service testing by validating recovery order, identifying documentation gaps, and confirming readiness for critical systems.

• Designed Power Automate workflows for secure file transfer and folder access requests integrated with Jira, improving approval tracking and reducing manual handling.

• Authored and standardized 50+ Confluence knowledge base articles covering onboarding, offboarding, access control, security tools, and IT support processes.

• Conducted high risk directory audits by removing inactive accounts, validating ownership, and documenting approval chains in Jira. Previous Technical Roles

Land Home Financial Services - Systems Administrator Concord, CA 2017 – 2019

Managed Microsoft 365 administration, Active Directory accounts, group policy support, desktop/server upgrades, user support, and system monitoring across multiple business units. Neighborhood Computers - IT Support Associate

Lafayette, CA 2016 - 2017

Supported small-business and healthcare-adjacent client environments, including endpoint refreshes, access support, Windows systems, backup/recovery checks, and user troubleshooting. John Muir Health - IT Support Specialist

Walnut Creek, CA 2015 - 2016

Provided enterprise helpdesk and desktop support for hospital and clinical users, including imaging, deployment, account access, application troubleshooting, and user facing technical support.

United Health Group - Systems Analyst

San Francisco, CA 2006 - 2015

Supported enterprise systems and healthcare users, including Windows 7 migration work, compatibility testing, troubleshooting, documentation, and business workflow support. Charles Schwab – Desktop Support

Pleasanton, CA 2004 - 2006

Provided first level support in a financial services environment, including password resets, remote troubleshooting, account access issues, desktop support, ticket documentation, and escalation handling.

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