Infrastructure Linux Engineer

Position Title: Infrastructure Linux Engineer Clearance: Desired, not required Location: Huntsville, AL/Remote Salary*: 120,000+

• Dependent upon qualifications

Summit 7 is here to rise above the ordinary. The work we do here goes far beyond day-to-day projects - it further protects the US defense industrial base from cyber threats, fosters thought leadership, and creates growth opportunities. Our support staff, sales team and technicians are all coming together to make a difference. We also recognize that you're a person with life beyond work, that's why we invest in meaningful health and welfare benefits such as:

• Excellent health benefits from BCBS
• Smile brighter with Ameritas dental benefits
• Prepare for the long-haul courtesy of our 401k with company matching
• 10 days' vacation, 7 days sick time
• Bonuses and salary increase potential via our certifications plan

We do cool work here, defying expectations by simply being who we are - each of us makes an impact. Essential Functions Responsible for designing, implementing, and automating enterprise Linux infrastructure across hybrid environments using open-source tools and modern DevOps practices. The ideal candidate will have deep expertise in Linux systems, automation frameworks, cloud integration, and infrastructure security, with a focus on delivering scalable, resilient, and compliant solutions. Duties and Responsibilities

• Design, implement, and maintain enterprise-grade Linux infrastructure across on-premises and cloud platforms such as Azure.
• Collaborate with cross-functional teams to align Linux systems architecture with security, compliance, and performance requirements.
• Automate provisioning, configuration, and system management using tools such as Ansible, Terraform, and shell or Python scripting.
• Leverage Infrastructure as Code (IaC) and Git-based workflows to ensure repeatable, version-controlled deployments.
• Architect and support containerized environments using technologies like Docker, Podman, and Kubernetes.
• Implement and manage secure Linux services including LDAP, NFS, SSH, VPN, firewalls (iptables or nftables), and SELinux or AppArmor.
• Ensure Linux systems adhere to compliance frameworks such as NIST SP 800-171 and 800-53 through secure configurations and auditing.
• Integrate Linux systems with ITSM platforms like ServiceNow to automate change management and incident handling.
• Monitor system health and performance using observability stacks such as Prometheus, Grafana, and the ELK stack, and proactively resolve issues.
• Design and implement secure remote access, user privilege separation, and network segmentation in multi-tenant Linux environments.
• Participate in the development of CI/CD pipelines for automated infrastructure updates and application deployments.
• Document architecture decisions, configurations, and procedures to ensure operational consistency and audit readiness.
• Document network designs, standards, and operational procedures for team knowledge sharing and audit readiness.

Qualifications - Required

• Bachelor's degree in Information Technology, Computer Science, or a related field, or equivalent practical experience.
• Proven experience as a Linux Architect, Systems Engineer, or DevOps Engineer in enterprise environments.
• Deep understanding of Linux operating systems (e.g., RHEL, CentOS, Ubuntu) and core services (e.g., SSH, LDAP, DNS, NFS).
• Experience designing and managing infrastructure across on-prem and cloud platforms such as Azure.
• Experience with monitoring and logging tools such as Prometheus, Grafana, ELK Stack, Splunk, or Azure Monitor.
• Strong knowledge of system security practices including SELinux, AppArmor, firewalls (iptables/nftables), and secure remote access.
• Proficiency in scripting languages such as Bash, Python, or Perl for automation and system management.
• Hands-on experience with configuration management and IaC tools such as Ansible, Terraform, and Git.
• Experience with containerization and orchestration platforms such as Docker, Podman, and Kubernetes.
• Familiarity with CI/CD pipelines, DevOps practices, and version control using Git and GitHub Enterprise.
• Experience integrating systems with ITSM platforms like ServiceNow for automated workflows and incident management.
• Strong troubleshooting and performance tuning skills for Linux systems and cloud-native environments.
• Excellent verbal and written communication skills with the ability to collaborate across cross-functional teams.
• Strong analytical thinking, attention to detail, and problem-solving capabilities.
• Excellent verbal and written communication skills, with the ability to collaborate across cross-functional teams.

Qualifications - Optional/Desired

• Relevant certifications such as Red Hat Certified Engineer (RHCE), Linux Foundation Certified Engineer (LFCE), CompTIA Linux+, or LPIC-2/3; additional certifications like AWS Certified SysOps Administrator or ServiceNow Certified Implementation Specialist are a plus.
• Experience with automated system testing and validation tools, including custom Python or shell-based test frameworks.
• Familiarity with ITIL processes and best practices, particularly in incident, change, and problem management for infrastructure operations.
• Experience working in or supporting Government Community Cloud environments (GCC, GCC High, or DoD).
• Working knowledge of compliance frameworks such as NIST SP 800-171 and 800-53, with experience applying security controls in Linux environments.
• Understanding of containerized environments (e.g., Docker, Podman) and their integration with enterprise Linux systems.
• Exposure to Kubernetes or OpenShift deployments and cluster administration in production environments.

Summit 7 Systems is an equal opportunity/ affirmative action employer and an alcohol and drug free workplace. 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.