Adriaan Cilliers
Johannesburg
Summary
Network & Systems Administrator with proven success in optimizing IT infrastructure and user support for over 150 users at Carl Zeiss Vision. Expertise in Microsoft 365, network security, and vendor management, leading to enhanced compliance and operational efficiency. Demonstrated ability to improve service delivery through effective IT policy development and resource management. Strong skills in network management, cybersecurity, and cloud services integration, ensuring reliable network operations.
Overview
17
17
years of professional experience
1
1
Certification
Work History
Network & Systems Administrator
Carl Zeiss Vision
Johannesburg
08.2019 - Current
- Provide full-spectrum IT support to 150+ users across multiple locations.
- Manage local infrastructure including server deployments, Hyper-V, and backups as well as electrical backups for server rooms.
- Administer Microsoft 365 suite and manage user requests via ServiceNow.
- Coordinate vendor relationships, procure hardware, and maintain asset inventory.
- Infrastructure and end user workstation patch management.
- Draft IT policies to assist with compliance with ISO standards
- Facilitate testing with end user’s with changes to software and new software deployments.
- Remote management of company branches. (Infrastructure & users)
- Liaising with corporate colleagues, as well as outsourced vendors on topics relating to networking and security within the ZEISS group.
- Scripting to assist with automation
- Digitalization of manual forms to digital platforms like MS Forms.
- End user training on IT systems and processes.
- Printer Management
Network Administrator I
e4 Strategic
Johannesburg
03.2013 - 07.2019
- Maintained server and network infrastructure across 3 branches (300+ users).
- Deployed and maintained Windows servers and Hyper-V environments.
- Provided frontline support, endpoint security management, and Exchange admin.
- Managed hardware lifecycle and onsite access control systems.
Lead Network Administrator
e4 Strategic (Lawyers Access Web)
George
02.2012 - 03.2013
- Sole IT administrator for a 50-user office; managed servers and support.
- Supported remote client access and resolved local network issues.
Network Administrator
My Ecommerce
George
07.2011 - 01.2012
- Provided IT support and infrastructure administration in a 3-person IT team.
- Handled remote access and system callouts for customers.
Repair Technician
Let Me Repair
George
06.2011 - 07.2011
- Diagnosed and repaired laptops; handled OS reinstallation and QA.
Delivery Driver (Temporary)
Roof & Carport Market
George
05.2011 - 05.2011
- Delivered roofing materials and handled logistics.
IT Support Technician
FinBond (Freelance)
George
01.2009 - 01.2011
- Provided freelance desktop support and IT consulting during my time at university.
Kitchen Staff (Part-time)
McDonald's
George
08.2008 - 11.2008
- Assisted in kitchen operations during final year of high school.
Education
Professional Diploma - Photography
Shaw Academy
Dublin01.2019
National Senior Certificate -
Highschool Outeniqua
George01.2008
Skills
- Microsoft Office 365 and Exchange Online
- Windows Server administration
- Active Directory management
- Hyper-V virtualization
- SCCM and endpoint management
- Veritas Backup Exec
- Network administration and security
- Helpdesk operations with ServiceNow
- IT asset management and procurement
- User training and technical documentation
- Software and systems testing
- IT policy drafting and procedures
- Network troubleshooting
- Infrastructure support
- Vendor relationship management
- Change management strategies
- Hardware procurement processes
- Attention to detail skills
- Patch management techniques
- Remote access technologies
- Server management
- IT policy drafting
Certification
- TorquelT – Johannesburg
- Configuring and Troubleshooting Windows Server 2008 R2 Active Directory
- Identity and Access Solutions
- Nelson Mandela Metropolitan University
- CCNA IT Essentials
- CCNA Networking for Home and Small Business
- CCNA Networking Fundamentals
References
Please note that references can be provided on request, but are not listed on this CV, as business contact details are ever changing.
Languages
Afrikaans
First Language
English
Advanced (C1)
C1
References
References available upon request.
Timeline
Network & Systems Administrator
Carl Zeiss Vision
08.2019 - Current
Network Administrator I
e4 Strategic
03.2013 - 07.2019
Lead Network Administrator
e4 Strategic (Lawyers Access Web)
02.2012 - 03.2013
Network Administrator
My Ecommerce
07.2011 - 01.2012
Repair Technician
Let Me Repair
06.2011 - 07.2011
Delivery Driver (Temporary)
Roof & Carport Market
05.2011 - 05.2011
IT Support Technician
FinBond (Freelance)
01.2009 - 01.2011
Kitchen Staff (Part-time)
McDonald's
08.2008 - 11.2008
Professional Diploma - Photography
Shaw Academy
National Senior Certificate -
Highschool Outeniqua