Systems Administrator (Linux/AWS)

Chainbridge Solutions Inc.; United States; Remote; USD 80,000 - 110,000; Full time

Job summary

An established industry player is seeking a skilled Systems Administrator to support secure, high-availability systems for federal clients. This role involves maintaining cloud-based Linux environments, ensuring system performance and compliance, and collaborating with cross-functional teams. The ideal candidate will have a strong foundation in Linux administration, experience with Java applications, and a proactive approach to problem-solving. Join a dynamic team where your expertise will directly contribute to enhancing infrastructure and security standards in a challenging yet rewarding environment.

Qualifications

• 6+ years of IT experience with 3+ years in Linux administration.
• Active CompTIA Security+ certification required.
• Experience with Java applications and cloud environments preferred.

Responsibilities

• Maintain and monitor Linux systems for optimal performance and security.
• Collaborate with teams for deployments and infrastructure improvements.
• Analyze logs and troubleshoot complex issues proactively.

Skills

Linux Administration (RHEL)

Java Application Support

Ansible

Scripting Skills

Log Analysis

Communication Skills

Cloud Exposure (AWS)

Security Compliance

Education

CompTIA Security+ Certification

Certifications in Systems/Cloud Administration

Tools

Docker

JIRA

Confluence

Bitbucket

CloudWatch

CloudTrail

Job description

Systems Administrator (Linux)

Department: Cloud Engineering

Employment Type: Full Time

Location: Remote

Description

Chainbridge Solutions is seeking a skilled Linux System Administrator to join our team supporting secure, high-availability systems for federal and military clients. In this role, you will be responsible for maintaining and optimizing cloud-based Linux environments, ensuring system stability, performance, and compliance. You will collaborate with cross-functional teams to support deployments, troubleshoot issues, and drive infrastructure improvements using tools like Ansible, Docker, and AWS-native services.

This position requires a strong foundation in Red Hat Enterprise Linux (RHEL) administration, experience supporting Java-based applications, and a proven ability to work independently while managing patching, monitoring, and automation across secure environments. Your day-to-day will include log analysis, incident response, vulnerability remediation, and close collaboration with client security teams to ensure STIG and DoD/FedRAMP compliance.

If you are a proactive problem-solver with strong communication skills, cloud exposure (AWS preferred), and a security-first mindset, we would like to hear from you.

Key Responsibilities

• Maintain, upgrade, and monitor Linux-based systems to ensure optimal performance, availability, and security.
• Implement and refine alerts, dashboards, and monitoring tools to detect and resolve issues proactively.
• Analyze logs, troubleshoot complex issues, and contribute to incident response and recovery planning.
• Perform root cause analysis and implement preventive measures to improve system stability.
• Collaborate with application engineers, developers, DBAs, and cloud architects to support deployments and infrastructure improvements.
• Build and maintain strong client relationships; proactively manage expectations, ensure client satisfaction, and address technical concerns.
• Explore existing environments, document findings, and implement enhancements independently.
• Manage patching, service configuration, and compliance with STIG, CIS, and DoD/FedRAMP standards.
• Review security scan results (e.g., IAVAs, ACAS), assess risk, and work closely with client security teams to remediate findings.
• Track vulnerabilities and remediations in JIRA, ensuring timely resolution and audit readiness.
• Support middleware and cloud configurations, troubleshoot issues, and optimize performance.
• Manage documentation and automation repositories in JIRA, Confluence, and Bitbucket.
• Provide best-practice support for secure, high-availability government and military systems.
• Support off-hours releases and ensure smooth deployment of application updates.
• Continuously expand cloud expertise through hands-on work and certification.

Experience and Skill Requirements

• U.S. Citizen eligible for a Public Trust Clearance
• Active CompTIA Security+ certification
• 6+ years of IT experience, including 3+ years expert-level Linux administration (RHEL)
• 3+ years supporting Java apps with Tomcat and HTTP Server (deployment, scripting, logs, troubleshooting)
• 1+ years with Ansible for automation and configuration management
• Strong scripting and log analysis skills across Linux and cloud environments
• Excellent communication skills for documenting, troubleshooting, and client interaction
• Experience in secure production environments with Linux hardening and patch management
• Certifications in systems/cloud administration or security (AWS preferred)
• Experience with containerization tools (e.g., Docker)
• Proven ability to work independently and manage tasks proactively
• Strong documentation and client-facing collaboration skills
• Familiarity with DevOps practices and cybersecurity fundamentals (hardening, patching, analysis)

Physical and Mental Requirements:

• Ability to remain stationary for extended periods, either standing or sitting, while working at a computer.
• Frequent verbal and written communication to exchange information with team members and stakeholders.
• Frequent repetitive movements of the wrists, hands, and/or fingers.
• Ability to understand instructions, follow procedures, and apply critical thinking to resolve issues effectively.
• Ability to gather, classify, and organize information effectively.
• Reasoning and Decision Making - Ability to logically analyze, interpret information, and prioritize tasks effectively.
  
  

Preferred Skills and Experience

• 5+ years of systems administration, with 2+ years in cloud environments (AWS preferred)
• Experience with autoscaling, monitoring, and high availability in cloud platforms
• Familiarity with cloud monitoring tools (e.g., CloudWatch, CloudTrail, Systems Manager)