IT Systems Administrator III

Primary Duties And Responsibilities

• Provide Tier III support for escalated infrastructure and platform issues
• Administer and support on-premises and Azure-hosted systems
• Operate and maintain Windows and Linux server environments
• Manage identity, access, and security integrations across infrastructure platforms
• Support physical, virtual, and cloud-based servers and applications
• Ensure adherence to IT Change Management, security, and compliance policies
• Operate, maintain, and support production Kubernetes clusters and the underlying Linux-based systems supporting containerized workloads
• Monitor platform health, performance, capacity, availability, and cost efficiency across Kubernetes, Linux, and Azure environments
• Troubleshoot complex, cross-layer issues involving containers, nodes, networking, storage, identity, and security integrations
• Manage Azure infrastructure supporting cloud-native platforms, including compute, networking, identity, storage, and security components
• Implement platform hardening, patching, lifecycle management, and resiliency best practices
• Support secure service-to-service communication and role-based access control (RBAC) models
• Implement and maintain security hardening across servers and platforms
• Support vulnerability remediation and audit activities in coordination with Information Security
• Participate in incident response, root cause analysis, and remediation efforts
• Ensure platforms are operated in a manner consistent with regulatory and audit expectations
• Aid in the design and implementation of highly available and resilient architectures
• Support infrastructure-as-code, automation, and operational tooling where applicable
• Maintain accurate operational documentation, runbooks, and architectural diagrams
• Serve as a backup resource for senior platform engineering staff, including Kubernetes and Linux subject matter experts
• Reduce key-person dependency through knowledge transfer and documentation
• Mentor and support Tier I and Tier II infrastructure staff
• Lead or contribute to infrastructure projects from planning through execution

Education And Experience

• High School diploma or GED required
• Bachelor’s degree in IT or Computer Science preferred
• 7+ years of systems administration or infrastructure engineering experience
• Relevant certifications preferred (Azure, Linux, Kubernetes, or security-focused)

Knowledge, Skills, And Abilities

• Advanced troubleshooting skills across infrastructure and platform layers
• Strong knowledge and skills in administering Linux-based systems
• Hands-on knowledge in supporting Kubernetes and container-based platforms in production environments
• Expertise in Microsoft Azure
• Ability to monitor, log, and conduct performance analysis along with incident response and root cause analysis
• Strong skills in scripting and automation (PowerShell, Bash, or similar)
• Comprehensive understanding of infrastructure documentation and architectural diagramming
• Comprehensive understanding of security practices, including Role-Based Access Control (RBAC) and access management
• Familiarity with cloud-native security practices is preferred
• Proficiency in supporting production data platforms and pipelines is preferred
• Ability to reduce reliance on third-party tooling through the development and use of internal platforms is preferred
• Familiarity working in regulated or audited environments is preferred

Benefits

• Health, Dental and Vision insurance
• Life and Disability insurance options
• Paid Time Off starts accruing once hired and take your birthday off
• -paid 401k Retirement plan with up to a 10% match of your base gross compensation
• Tuition reimbursement opportunities & professional development
• Volunteer opportunities -and earn additional PTO hours!
• On-site clinics for Vaccines and Mammograms
• And many more!