Justin Bonner
GOLO
Elkton,MD
1
Language
2
Certifications
19
years of professional experience
IT professional managing 10+ systems per month across enterprise environments, including Microsoft 365, Azure Active Directory, Intune, and Defender. Leading licensing, hybrid AD support and Windows Server updates that improve service reliability and platform scale. Partners with internal staff and vendors to keep infrastructure stable, secure, and ready for growth.
Work History
Systems Administrator / IT Lead
4 Years 5 Months- Managed 1 internal IT resource and multiple external vendors across infrastructure, support, and delivery coordination.
- Administered the Office 365 tenant, covering user lifecycle, license allocation, compliance policies, Exchange, Teams, and SharePoint.
- Maintained hybrid Active Directory and Azure AD sync, with GPO management and user access control.
- Led the Windows Server 2016 upgrade through planning, scheduling, validation, and deployment coordination.
- Supported Microsoft Teams, Slack, and Zoom appliances, including conference room phones and user management.
- Handled server maintenance, SonicWall firewall support, and disaster recovery readiness across core infrastructure.
- Served as escalation point for complex issues, mentored junior staff, maintained asset inventory, and tracked vendor delivery SLAs.
Systems Administrator
4 Years 5 Months- Maintained 100% network uptime across warehouse and office systems through routine monitoring and troubleshooting.
- Resolved 5 remote support requests weekly while keeping user VPN and access issues moving quickly.
- Managed server backups, updates, and maintenance to keep core systems stable and available.
- Administered SonicWall firewalls and supported firewall-related maintenance for secure network operations.
- Created and updated network diagrams for each site and warehouse to document infrastructure changes clearly.
- Handled new user provisioning and deactivation in Office 365, Salesforce, Shipstation, and Active Directory.
- Investigated and documented outages at remote sites, then coordinated repairs for Delaware and Las Vegas network issues.
- Worked with users to determine areas of technology in need of improved usability.
- Installed important security and functionality patches to maintain optimal protections against intrusion and system reliability.
- Managed onboarding and offboarding of employees.
- Trained junior staff on system administration best practices, fostering a collaborative work environment.
Senior Desktop Support Engineer
4 Years 10 Months- Managed help desk ticketing and asset tracking logs, improving organization and visibility across support operations.
- Installed, maintained, and repaired computers, printers, peripherals, and network devices for end users.
- Provisioned new users and managed account access and permissions in Active Directory and Microsoft 365 administration environments.
- Deployed new hardware, decommissioned outdated equipment, and coordinated recycling to keep endpoints current.
- Trained staff on common IT issues, supported large-scale deployments and migrations, and worked with vendors on escalations.
IT Service Desk Analyst
4 Years 7 Months- Resolved [number] service requests per shift across remote and on-site support for multi-state users.
- Built and configured workstations, printers, and Android devices while supporting Office applications, Active Directory user accounts, and network printers.
- Handled Dell and HP warranty repairs and RMA coordination, applying vendor follow-up to restore faulty hardware quickly.
- Contributed to knowledge base content and ongoing IT service improvements through clear technical documentation and process updates.
Information Security Analyst
1 Year 3 Months- Investigated internal security violations and documented findings in clear incident reports.
- Supported Arcsight log collection and event correlation for SOC monitoring and escalation workflows.
- Reviewed firewall, router, and security log activity to identify unauthorized access and policy issues.
- Documented compliance risks and response actions to strengthen audit support and case traceability.
- Escalated security findings to the appropriate team and tracked follow-up until closure.
Customer Service Associate
7 Years 11 Months- Welcomed customers, located merchandise quickly, and created a positive in-store experience through attentive service.
- Processed point-of-sale transactions with cash, check, and credit card payments while maintaining accuracy.
- Mixed paint using PC-based paint computers to support customer orders accurately.
- Stocked and replenished merchandise according to store merchandising layouts to keep the floor organized and ready for shoppers.
- Resolved customer complaints courteously and followed company policy while handling sensitive service issues.
Education
Bachelor of Science - Computer and Network Security
Associates - Science in Network Management
Skills
Active Directory management
Network administration
ServiceNow
Technical documentation
Incident management
Windows Server administration
Microsoft 365 administration
Firewall administration
Virtualization management
Disaster recovery planning
IT service management
Vendor management
Team leadership
Policy & process development
IT project management
Microsoft Entra ID governance
Certificate lifecycle management
Security awareness program management
Network segmentation
Certification
SonicWall Firewall Administration course, Udemy course, Present
Languages
English
Personal Information
- Driving License: Driver's License
- Work Permit: Authorized to work in the US for any employer
Timeline
Systems Administrator / IT Lead
GOLO
03.2022 - 08.2026Read More
Systems Administrator
GOLO
03.2022 - 08.2026Read More
Senior Desktop Support Engineer
GOLO
10.2021 - 08.2026Read More
IT Service Desk Analyst
Unified Door & Hardware Group
03.2017 - 10.2021Read More
Information Security Analyst
Computer Sciences Corporation
02.2015 - 05.2016Read More
Customer Service Associate
Blue Bird Lane
03.2007 - 02.2015Read More
Cumberland County College
Associates from Science in Network Management
Read More
Wilmington University
Bachelor of Science from Computer and Network Security
Read More