System Engineer, Level 3

What You Will Do:

As a Systems Engineer Level 3 at Independent Software, you will support the administration, engineering, security, and operational sustainment of mission-critical Linux infrastructure across secure enterprise and real-time operational environments. This role is heavily focused on Linux systems engineering within containerized, cloud-hosted, virtualized, and dataflow-processing environments supporting DoD and Intelligence Community missions.

You will work closely with users, customers, and a small mission-focused engineering team to maintain system integrity, performance, security, and operational availability across enterprise and mission systems. This position requires strong troubleshooting skills, deep Linux systems expertise, and experience supporting secure operational environments requiring SSP compliance and STE/STN support.

The ideal candidate enjoys working across infrastructure layers including operating systems, networking, storage, security, and application support while solving complex operational challenges in secure mission environments.

Key Responsibilities:
 

• Support systems engineering and system administration activities across secure Linux enterprise environments
• Maintain system integrity, availability, performance, and security across mission-critical Linux systems
• Support and maintain containerized and cloud-hosted environments, including Kubernetes-based deployments and AWS infrastructure
• Administer and support virtualization platforms and enterprise storage management solutions
• Configure and troubleshoot IP networking, routing, switching, and firewall technologies within Linux-centric environments
• Support application deployments and provide advanced troubleshooting across OS, network, storage, and security layers
• Implement and maintain system hardening, PKI/TLS configurations, cryptographic policies, and secure configuration baselines
• Ensure systems comply with SSP documentation requirements and STE/STN security standards
• Support system patching, vulnerability remediation, and secure operational sustainment activities
• Troubleshoot complex system, network, application, and dataflow issues while escalating operational risks and outages as required
• Support mission dataflow systems, including monitoring, troubleshooting, and optimizing data pipelines
• Assist in the operation and support of RF systems, signal transport components, and mission transport environments
• Support logging, monitoring, and analytics platforms such as ELK / Elasticsearch for system observability and troubleshooting
• Develop and maintain operational procedures, system documentation, and technical implementation guidance
• Collaborate closely with engineering, operations, and security teams to support mission objectives

• Strong Linux systems engineering and administration experience
• Experience supporting containerized and cloud-hosted environments
• Experience supporting virtualization platforms and enterprise storage management solutions
• Strong understanding of IP networking, routing, switching, and firewall technologies
• Strong understanding of PKI, TLS, cryptographic principles, and Linux crypto policies
• Experience supporting SSP compliance documentation and STE/STN security requirements on Linux systems
• Strong troubleshooting skills across infrastructure layers including operating systems, networking, storage, and applications
• Experience supporting enterprise applications within secure Linux environments
• Familiarity with Kubernetes, AWS, and modern infrastructure technologies
• Experience with automation and configuration management tools such as Ansible or similar platforms is a plus
• Strong analytical, troubleshooting, and problem-solving skills
• Strong written and verbal communication skills
• Ability to work independently and collaboratively within operational engineering teams