Linux Administrator

AVATAR Computing, Inc.; Worcester (MA); On-site; USD 80,000 - 100,000; Full time

Job summary

A technology services provider is seeking a Linux Administrator in Worcester, MA. In this role, you will manage Linux servers and support the Identity, Credential, and Access Management functions. Responsibilities include system monitoring, security hardening, and automating tasks with scripts. Applicants must be US citizens with an Active Secret Clearance and relevant certifications. This position supports the Army's modernization programs and focuses on maintaining secure, compliant infrastructure.

Qualifications

• US Citizen (No Dual Citizens).
• Active Secret Clearance Required.
• Strong knowledge of Linux administration including services, networking, storage, and SELinux.
• Experience with identity or security services such as LDAP, SSO, and federation.
• Familiar with logging and monitoring tools.

Responsibilities

• Manage, configure, and maintain Linux servers (RHEL/Oracle Linux/Ubuntu).
• Perform patching, vulnerability remediation, system hardening, and lifecycle management.
• Support ICAM tools and services, ensuring secure configuration and uptime.
• Develop scripts to automate administrative tasks and deployments.
• Participate in on-call rotations for high-severity incidents.

Skills

Linux administration

Scripting (Bash, Python, Ansible)

Identity and Access Management

Security hardening

Monitoring tools (Splunk, ELK)

Education

Security+ or equivalent certification

Job description

Description

Avatar Computing is seeking a Linux Administrator to support the Army's Enterprise Application/System Modernization and Migration (EAMM) program. You will support, maintain, and enhance Linux-based systems and services that enable Identity, Credential, and Access Management (ICAM) 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:

• Manage, configure, and maintain Linux servers (RHEL/Oracle Linux/Ubuntu)
• Perform patching, vulnerability remediation, system hardening, and lifecycle management
• Monitor system performance, health, and capacity
• Support ICAM tools and services (e.g., IAM directories, federation services, PKI components, privileged access systems)
• Ensure secure configuration and uptime for ICAM-related applications hosted on Linux
• Implement and maintain security baselines (DISA STIGs, CIS Benchmarks, internal policies)
• Manage certificates, key stores, and cryptographic components supporting ICAM services
• Develop scripts (Bash, Python, Ansible) to automate administrative tasks and deployments
• Support CI/CD or DevOps workflows used for ICAM platform updates
• Troubleshoot OS-level and application-level issues
• Participate in on-call rotations for high-severity ICAM service events

Qualifications

• US Citizen (No Dual Citizens)
• Active Secret Clearance Required
• Security+ or equivalent certification
• 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

Avatar Computing is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status.