Linux Administrator

Open Systems Technologies Corporation is a leader in the government contracting marketplace, providing Enterprise Security and Cloud Computing solutions to support large organizations. Our capabilities include supplying federal government entities and private businesses with software development, scientific and engineering technical assistance, systems integration and enterprise security. Since its founding in 1996, OST has been committed to delivering high-quality, best-in class results that bring added value to our clients, while investing in our employees’ futures by providing exciting projects to work on, and robust benefits to include technical training and certifications, relocation assistance and a 401K match with immediate vesting.

The Linux Administrator for ICAM supports, maintains, and enhances Linux-based systems and services that enable Identity, Credential, and Access Management functions across the enterprise. This role ensures secure, stable, and compliant operations of infrastructure components that underpin authentication, authorization, and identity lifecycle processes.

Key Responsibilities
System Administration Manage, configure, and maintain Linux servers (RHEL/Oracle Linux/Ubuntu or distribution in use).
Perform patching, vulnerability remediation, system hardening, and lifecycle management.
Monitor system performance, health, and capacity.

ICAM Platform Support Support ICAM tools and services (e.g., IAM directories, federation services, PKI components, privileged access systems, connectors, and agent-based integrations).
Ensure secure configuration and uptime for ICAM-related applications hosted on Linux.
Assist in integration of identity services with enterprise applications and infrastructure.

Security & Compliance Implement and maintain security baselines (DISA STIGs, CIS Benchmarks, internal policies).
Assist with audit requests, logs, identity access reviews, and compliance reporting.
Manage certificates, key stores, and cryptographic components supporting ICAM services.

Automation & Scripting Develop scripts (Bash, Python, Ansible) to automate administrative tasks and deployments.
Support CI/CD or DevOps workflows used for ICAM platform updates or configuration changes.

Incident & Problem Management Troubleshoot OS-level and application-level issues.
Participate in on-call rotations for high-severity ICAM service events.
Conduct root cause analysis and implement permanent fixes.

Collaboration Work closely with ICAM architects, cybersecurity, network teams, and application teams.
Support project deliverables, migrations, and environment buildouts.

Qualifications

• US Citizen (No dual citizens)
• Active Secret Clearance Required
• Possession of Security+ or equivalent
• Strong knowledge of Linux administration (system services, networking, storage, SELinux, etc.).
• Experience with identity or security services (LDAP, SSO, federation, certificates, PAM, SSSD).
• Familiarity with logging platforms (Splunk, ELK) and monitoring tools.
• Scripting experience (Bash, Python, Ansible).
• Understanding of IAM concepts: authentication, authorization, identity lifecycle, RBAC, MFA.
• Knowledge of security hardening and compliance frameworks.

Benefits

OST is an Equal Opportunity Employer and has been operating since 1996 providing support on various contracts with Government agencies. We offer a comprehensive benefits package that includes 3 weeks paid time off, 11 Federal Holidays, medical/dental coverage, STD, LTD, Life Insurance, AD&D, 401k with up to 4% match, and end-of-year profit sharing.