System Engineer Mid-Level Skill Level 3

Work across all phases of the system engineering lifecycle: concept development requirements analysis design integration testing deployment operations and sustainment

Produce comprehensive technical documentation and drawing packages including system architectures interface control documents (ICDs) test plans and as-built configurations

Translate user and mission requirements into actionable system designs; participate in requirements reviews design reviews and technical interchange meetings (TIMs)

Serve as a senior technical authority within a small mission-focused team; interact frequently with users customers and cross-functional teams across the program

Support system trades analysis configuration management and technical baseline management throughout the lifecycle

Perform advanced installation configuration hardening and management of Red Hat Enterprise Linux (RHEL) CentOS and Rocky Linux server environments

Administer authentication and authorization infrastructure including FreeIPA identity management and Active Directory integration in classified environments

Manage system performance patch cycles package management and OS lifecycle operations across classified enclaves

Configure and maintain system services logging frameworks (rsyslog/journald/auditd) scheduled tasks and security controls

Provide expert-level Tier 2/3 troubleshooting across Linux-based systems; diagnose complex failure scenarios and drive resolution

Install configure and manage Secure Telephone Equipment (STE) and Secure Telephone Network (STN) infrastructure in both connected and disconnected/air-gapped classified environments

Support STE/STN provisioning moves adds and changes (MACs); coordinate with communications and security personnel

Troubleshoot STE/STN connectivity interoperability and integration issues in complex classified facility environments

Maintain accurate inventory and technical documentation for all STE/STN endpoints and associated infrastructure

Install configure and maintain Government Off-the-Shelf (GOTS) software products in support of program requirements

Perform routine maintenance patching and lifecycle management of GOTS applications within classified environments

Coordinate with program stakeholders and developers on GOTS software integration compatibility testing and issue resolution

Create read modify and maintain automation scripts in Bash and Python to support system administration deployment and operational tasks

Automate repetitive operational workflows including system monitoring configuration enforcement log analysis and health checks

Support team adoption of automation and scripting best practices

Design and execute system-level test plans acceptance test procedures and regression tests

Lead troubleshooting efforts across complex multi-component classified systems; document findings and remediation actions

Participate in operational readiness reviews and system validation activities prior to deployment

Education: Bachelors degree in Computer Science Systems Engineering Information Technology Electrical Engineering or a related technical field. Equivalent experience (4 additional years of direct systems engineering experience in lieu of degree) may be considered.

Experience: 8 years of systems engineering experience in classified DoD/IC environments with demonstrated expertise across the full system engineering lifecycle.

Active TS/SCI clearance with Full Scope Polygraph - no exceptions; must be active prior to start

Strong hands-on situational awareness (SA) experience in an IC program context

Deep Linux proficiency across RHEL CentOS and Rocky Linux: installation configuration management and security hardening

Experience with authentication and authorization systems: FreeIPA identity management and/or Microsoft Active Directory integration on Linux

Hands-on STE/STN installation configuration and management experience in both connected and disconnected classified environments

Demonstrated GOTS software experience: installation configuration and ongoing maintenance of government-provided software products

Proven ability to create read and modify automation scripts in Bash and/or Python

Strong testing and troubleshooting skills across complex multi-component systems

Ability to produce technical documentation and drawing packages (system designs ICDs test plans as-builts)

Comfortable operating within a small agile mission-focused team that interfaces regularly with users customers and adjacent technical teams

Strong written and verbal communication skills in a security-controlled environment

Familiarity with shared storage solutions (NAS SAN distributed storage such as Ceph)

Virtualization and containerization experience: VMware vSphere KVM Docker Kubernetes or Podman

Data flow design experience in classified or sensitive network environments

Familiarity with IT automation and configuration management tools: Ansible SaltStack (SALT) or equivalent

Familiarity with Helm Charts and YAML-based configuration management for containerized workloads

DevOps experience including CI/CD pipeline design GitOps workflows and infrastructure-as-code practices

Experience with air-gapped or disconnected network environments and offline software lifecycle management

DoD 8140/8570 IAT Level II certification (Security CASP or equivalent)