Darrin Johnson
Summary
Experienced AD team lead with over 10 years of IT expertise in server and system support, including 7 years as a DOD Contractor. Proven track record in designing, implementing, and maintaining enterprise-level Active Directory infrastructures. Strong leadership skills, excellent problem-solving abilities, and a commitment to optimizing system performance and security. Equipped to effectively communicate and lead teams towards success.
Overview
11
11
years of professional experience
1
1
Certification
Work History
Active Directory Team Lead (DOD CTR)
Beacon Hill Technologies\GDIT
03.2024 - Current
- Lead a team of 5 IT professionals in managing and maintaining the Active Directory infrastructure for the US Army
- Design and implement Group Policies to ensure compliance with DISA security standards and STIGs to improve system performance
- Collaborate with cross-functional teams to design and deploy Identity and Access Management solutions
- Oversee the restructuring of the on-premises Active Directory and PKI services
- Develop and maintain PowerShell scripts to automate administrative tasks and enhance system efficiency
- Conduct regular audits and assessments to identify and mitigate security vulnerabilities
- Provide training and mentorship to team members, fostering a culture of continuous learning and improvement
- Manage and resolve escalated technical issues, ensuring minimal downtime and disruption to business operations
HPC Systems Engineer
Hewlett Packard Enterprise
07.2021 - 07.2023
- Responsibilities include designing, developing, and debugging hardware, firmware, and software for new and existing HPC products for the Air Force
System Administrator III (DOD CTR)
Amentum
01.2021 - 04.2021
- Researched, designed, tested and implemented solutions for increased productivity
- Serve as shift lead for configuration, maintenance, troubleshooting, repair and analysis of data processing equipment
- Supported DoD C4ISR program and automated tasks to ensure productivity
- Research, design, test and implement solutions for increased productivity
- Assist with network topology, communication standards, multi-protocol client/server, data transmission
- Configured, performed maintenance, troubleshot, repaired and did analysis of data processing equipment and Desktop and Server systems, Disaster Recovery Systems and Networks for RPA SOC
System Administrator II (DOD CTR)
Jacobs
04.2020 - 01.2021
- Determined hardware, software, and systems configuration specifications, and requirements
- Patched, fixed, and made all assigned systems compliant using NIST and DOD protocols
- Planned, installed, configured, and performed troubleshooting of Microsoft Hyper V, Windows server, and client products across multiple networks to including IIS, DHCP, DNS
- Provided support to users at Eglin AFB, FL in the areas of account management, enterprise applications, desktop applications, and peripherals
System Administrator\Engineer (DOD CTR)
P3S Corp
10.2018 - 04.2020
- Planned, implemented, installed, operated and maintained systems hardware, software applications and IT infrastructure Aid with Air Force systems
- Help manage project deployment lifecycle, defined requirements and researched solutions to increase productivity
System Support Specialist (DOD CTR)
Summit Technical Solutions
07.2018 - 10.2018
- Improved system performance by identifying and resolving technical issues in a timely manner
- Monitored and took necessary steps to ensure site required actions associated with NOTAM's, PO&AM's, NOSC taskings, and AFCERT messages were completed within specified dates
- Stayed current with industry advancements through continuous learning opportunities including certifications and professional development courses
- · Supported Air force equipment maintenance and configuration (including LAN) of desktop computers, peripheral devices and servers
IT Field Support Administrator
Apex Systems
02.2018 - 07.2018
- Utilizing AD add users to App Deploy groups in preparation of Windows 10, deployed image using SCCM to Migrate users to Office 365 and Windows 10
- Created OU, modified users and groups in Active Directory and Add App Deploy groups to users and computers in Configuration Manager Console
End User Migration Technician (DOD CTR)
OSCEdge
11.2017 - 12.2017
- Worked as part of a Windows 10 Office 365 implementation team
System Specialist (DOD CTR)
Datum Software
09.2015 - 09.2016
- Provided exceptional support services to internal stakeholders by resolving technical issues quickly and accurately.
- Identified opportunities for process improvements by analyzing user feedback and monitoring key performance metrics closely.
- Conducted regular system audits, ensuring compliance with industry regulations and company policies.
- Troubleshot critical issues swiftly, maintaining a consistently high level of system performance and reliability.
System Engineer
Corporate Technologies LLC
02.2014 - 10.2014
- Resolved issues and escalated problems with knowledgeable support and quality service.
- Resolved complex technical issues through effective problem-solving techniques and root cause analysis.
- Managed multiple projects simultaneously, meeting tight deadlines while maintaining high-quality deliverables.
- Reduced downtime for critical systems through proactive monitoring and maintenance tasks.
Education
High School Diploma -
Fairmont High School
Fairmont, MN08.1989
Skills
- Active Directory Management
- Windows Server Administration
- Group Policy Management
- Identity and Access Management (IAM)
- System Security and Compliance
- Team Leadership and Mentoring
- Disaster Recovery Planning
- Project Management
- PowerShell Scripting
- DNS
- Customer service
- Technical communication
Certification
CompTIA Security
Timeline
Active Directory Team Lead (DOD CTR)
Beacon Hill Technologies\GDIT
03.2024 - Current
HPC Systems Engineer
Hewlett Packard Enterprise
07.2021 - 07.2023
System Administrator III (DOD CTR)
Amentum
01.2021 - 04.2021
System Administrator II (DOD CTR)
Jacobs
04.2020 - 01.2021
System Administrator\Engineer (DOD CTR)
P3S Corp
10.2018 - 04.2020
System Support Specialist (DOD CTR)
Summit Technical Solutions
07.2018 - 10.2018
IT Field Support Administrator
Apex Systems
02.2018 - 07.2018
End User Migration Technician (DOD CTR)
OSCEdge
11.2017 - 12.2017
System Specialist (DOD CTR)
Datum Software
09.2015 - 09.2016
System Engineer
Corporate Technologies LLC
02.2014 - 10.2014
High School Diploma -
Fairmont High School
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