Demo

Senior Linux System Administrator

Vista Applied Solutions Group Inc
Houston, TX Contractor
POSTED ON 11/25/2025 CLOSED ON 12/24/2025

What are the responsibilities and job description for the Senior Linux System Administrator position at Vista Applied Solutions Group Inc?

Our client is seeking a Senior Linux Engineer for a contract-to-hire role at their Houston, TX office.


Overview

We are looking for a seasoned technical leader to guide the design and administration of large-scale Linux-based environments. This position blends architectural planning with hands-on engineering, supporting a mission-critical server footprint and ensuring the stability, scalability, and security of core platforms. The ideal candidate has extensive Linux/Unix experience, strong cloud knowledge, and a track record of successfully delivering infrastructure projects in demanding operational settings.


Primary Responsibilities

Infrastructure Engineering & Design

  • Develop end-to-end infrastructure solutions for enterprise workloads using Linux/Unix technologies.
  • Create long-term roadmaps supporting modernization, cloud adoption, platform upgrades, and hybrid integrations.
  • Ensure system designs meet high requirements for resiliency, security, compliance, and performance.


Platform Engineering & Operations

  • Oversee day-to-day oversight, upkeep, and optimization of a large fleet of Linux servers.
  • Troubleshoot complex issues affecting availability, performance, or capacity in fast-paced operational environments.
  • Build automation frameworks for provisioning, patching, deployment, and configuration using tools such as Terraform and Ansible.


Technical Program & Project Leadership

  • Lead infrastructure initiatives from planning through execution, managing schedules, risks, resources, and communications.
  • Coordinate across engineering, operations, and business teams to ensure alignment with organizational objectives.
  • Deliver project outcomes that meet scope, timelines, and operational needs.


Leadership & Team Development

  • Provide mentorship and guidance to Linux administrators and engineers.
  • Encourage a high-performing culture dedicated to reliability, responsiveness, and continuous improvement.
  • Support incident management activities with expert-level troubleshooting and decision-making.


Cloud & Hybrid Environments

  • Implement and support cloud solutions using major providers, including Oracle Cloud and other hyperscale environments.
  • Evaluate cloud capabilities and recommend optimal placements for workloads based on cost, performance, and security needs.
  • Design connectivity and hybrid cloud strategies that integrate on-prem and cloud resources seamlessly.


Security & Governance

  • Ensure platforms adhere to security best practices, including hardening, privileged access management, and compliance controls.
  • Work with internal teams to maintain audit readiness and meet regulatory, industry, and corporate standards.


Required Background

  • Degree in a technology-related discipline or equivalent professional experience.
  • 10 years working with Linux/Unix systems in both engineering and architectural capacities.
  • Experience supporting environments with hundreds of servers or similarly large deployments.
  • Hands-on experience with Oracle Cloud and familiarity with AWS or Azure.
  • Proficiency in automation, scripting, and infrastructure-as-code (Terraform, Ansible, Python, Shell/Bash).
  • Strong understanding of networking, virtualization, storage, and high-availability architectures.
  • Demonstrated experience leading technical teams and supporting high-stakes, always-on environments.


Preferred Background

  • Relevant cloud certifications (OCI, AWS, Azure).
  • Experience with container platforms such as Kubernetes.
  • Knowledge of clustering, disaster recovery strategies, and performance tuning.
  • Project management credentials (e.g., PMP or similar).
  • Strong communication skills and comfort engaging with stakeholders at all levels.

Salary : $60 - $78

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