Mission freelance 2nd Line System Administrator - DV Cleared

2nd Line System Administrator

Must have an Active DV Clearance

- Deliver effective technical support while maintaining high standards of security, documentation and customer service.

2nd Line System Administrator Responsibilities

- Provide 2nd Line technical support across secure infrastructure environments.
- Monitor system health, availability and performance using Event Management tools.
- Investigate, triage and resolve incidents within agreed SLAs.
- Escalate complex technical issues through established Service Management processes.
- Manage incident tickets and catalogue requests, maintaining accurate records and documentation.
- Support VMware vCenter and associated virtual infrastructure.
- Assist with monitoring and troubleshooting cloud infrastructure environments.
- Identify recurring incidents and contribute to service improvement activities.
- Create and maintain Knowledge Base articles and Standard Operating Procedures (SOPs).
- Support shift-left initiatives to improve service desk efficiency.
- Work collaboratively with 2nd and 3rd Line engineering teams to resolve technical issues.
- Maintain compliance with security procedures and operational standards.

2nd Line System Administrator Skills and Experience

- Proven experience in a 2nd Line System Administrator or Infrastructure Support role.
- Strong incident management, technical triage and troubleshooting experience.
- Experience using Event Management and monitoring tools, including SCOM or SolarWinds.
- Hands-on experience supporting VMware vCenter environments.
- Experience working with cloud infrastructure environments.
- Strong understanding of IT Service Management processes and SLA-driven support.
- Experience managing incidents and service catalogue requests.
- Ability to investigate system alerts, identify root causes and escalate technical issues appropriately.
- Strong technical documentation skills, including Knowledge Base articles and SOPs.
- Excellent customer service, communication and organisational skills.
- Proactive approach to problem-solving and continual service improvement.
- Ability to work independently within a small, collaborative engineering team.
- Experience supporting secure Government or Defence infrastructure would be advantageous.
To apply, please send your CV by pressing the apply button.


Due to high volume of applications, only shortlisted CVs will be contacted.


Due to the nature and urgency of this post, candidates holding or who have held high level security clearance in the past are most welcome to apply. Please note successful applicants will be required to be security cleared prior to appointment which can take a minimum 18 weeks. LA International is an award-winning partner of choice for many of the world's most influential companies and government organisations. Holding Enhanced Government Security Accreditation, we are recognised as the European market leader in the delivery of Security Cleared talent to organisations that demand the very highest levels of security, compliance and assurance.

An award-winning organisation, having secured the prestigious Queens Award for Enterprise: International Trade over multiple years. We are committed to fostering an inclusive, equitable and accessible workplace where everyone feels valued and supported. We welcome applications from all individuals, regardless of background or identity, and we encourage candidates who may not meet every listed requirement to still apply. If you require any adjustments or support during the recruitment process, please let us know and we will work with you to ensure a fair and accessible experience.

Please Note: If a high volume of applications is received, only candidates shortlisted will be contacted.