IT Systems Administrator III

IT Systems Administrator III The IT Systems Administrator III will provide senior‑level operational ownership of enterprise infrastructure platforms, with a strong emphasis on Linux, Kubernetes, and Azure‑hosted production workloads. This position supports business‑critical systems and serves as a secondary technical lead and backup to senior platform engineering staff, ensuring continuity, resiliency, and institutional knowledge across modern infrastructure environments. Essentials 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 Administer and 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 Assist 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 Ability to support security, compliance, and audit requirements Understanding of 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 General Electric Credit Union is an Equal Opportunity Employer #J-18808-Ljbffr General-Electric-Credit-Union