Intermediate System Administrator

Semper Valens Solutions; San Antonio (TX); On-site; USD 100,000 - 130,000; Full time

Job summary

Semper Valens Solutions seeks a Systems Administrator for their San Antonio office. The role requires strong Kubernetes experience and 10 years of IT systems administration across both Microsoft and Linux platforms. Candidates must possess IAT Level II certification and have demonstrated experience with AWS cloud infrastructure, container technologies, and CI/CD practices. This position involves working with developers and cybersecurity teams to maintain system security and availability, contributing to critical mission platforms.

Qualifications

• 10 years of IT systems administrative experience on Microsoft and Linux platforms.
• 2 years proficiency with AWS cloud infrastructure maintenance.
• Experience managing Kubernetes clusters and containerized workloads.

Responsibilities

• Design, operate, and support production environments with Kubernetes.
• Ensure systems reliability, scalability, and security across platforms.

Skills

IT systems administrative experience

Kubernetes in production environments

Docker

AWS cloud infrastructure

CI/CD pipelines

Ansible

Terraform

Helm

Linux

Education

IAT Level II – Security+ & CISSP

Tools

AWS

Azure

Google Cloud

Job description

Intermedia System Administrator (Kubernetes/Cloud Infrastructure)

Full Time, San Antonio, TX OR Ft. Meade, MD

Secret Clearance with TS/SCI eligibility

Overview

Semper Valens is seeking an experienced Systems Administrator with strong Kubernetes experience to help design, operate, and support our production environment. This role bridges traditional systems administration functions and modern cloud-native operations, ensuring systems reliability, scalability, and security across critical mission platforms. You will work closely with developers, DevOps, and cybersecurity teams to support the adoption of Kubernetes clusters, automating infrastructure, and maintain high-availability/high-stability environments.

Required Skills & Qualifications

• 10 years of IT systems administrative experience with both Microsoft and Linux platforms. With two years proficient understanding of maintenance (patching, STIG, and upgrade processes) on AWS cloud infrastructure
• IAT-Level-II Certified
• Demonstrated experience and/or training in system administration and development best practices in AWS
• Demonstrated experience in managing and adopting Kubernetes in production environments
• Ability to deploy, manage, and support Kubernetes clusters
• Experience operating and maintaining containerized workloads using Docker and Kubernetes
• Experience managing Kubernetes resources including namespaces, deployments, services, ingress, and storage
• Experience with container technologies (Docker)
• Demonstrated experience with cloud platforms (AWS, Azure, Google Cloud) and Linux
• Demonstratable experience with Helm, Terraform, Ansible, Vault, CI/CD pipelines, GitLab, and Kustomize

Required Certifications

• IAT Level II – Security+ & CISSP

Desired Qualifications

• AWS Solutions Architect certification
• AWS SysOps Administrator certification
• Red Hat certification
• 5 years' experience in CI/CD SW development
• Kubernetes certifications (CKA, CKAD, or similar)

Semper Valens Solutions is an Equal Opportunity Employer

Semper Valens Solutions proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment because of race, color, sex, religion, age, sexual orientation, gender identity and expression, national origin, marital/parental status, pregnancy/childbirth, or related conditions, physical or mental disability, genetic information, status as a Disabled Veteran, Recently Separated Veteran, Active-Duty Wartime or Campaign Badge Veteran, Armed Forces Services Medal, or any other characteristic protected by law.

If you require a reasonable accommodation to apply for a position with Semper Valens Solutions through its online applicant system, please contact Semper Valens Solutions Human Resources Department at [phone].

Semper Valens Solutions is an affirmative action/equal opportunity employer - minorities, females, disabled, and protected veterans are urged to apply. Applicants have rights under Federal Employment Laws.