Infrastructure Engineer

Northstrat is seeking a highly skilled Infrastructure Engineer to design, implement, secure, and maintain our enterprise infrastructure. This role combines advanced Cisco networking and security expertise with strong Linux systems administration experience. The ideal candidate will be hands‑on, security‑focused, and comfortable operating in a hybrid on‑premises and cloud environment.

• Design, deploy, and maintain enterprise network infrastructure
• Configure and support:
• Cisco routers and switches
• Cisco ASA and/or Firepower firewalls
• Cisco ISE (Identity Services Engine)
• Manage VLANs, routing protocols (BGP, EIGRP), and switching technologies
• Implement and maintain site‑to‑site and remote access VPNs
• Maintain network segmentation and security controls
• Perform firmware upgrades, patching, and lifecycle management
• Monitor network health and performance using SNMP and other tools
• Troubleshoot complex Layer 2/3 connectivity issues
• Implement and enforce network security best practices
• Maintain firewall policies and intrusion prevention system

• Install, configure, and maintain Linux servers (RHEL, CentOS, Ubuntu)
• Manage system services, patching, and updates
• Automate tasks using Bash, Python, or Ansible
• Manage system backups and disaster recovery procedures
• Monitor system performance and troubleshoot production issues

• Must have a current and active DoD TS/SCI clearance
• CompTIA Security+ (or equivalent) or better is required
• At least 5+ years of experience in network engineering and systems administration
• Strong hands‑on experience with Cisco networking equipment is required
• Experience with Cisco ASA or Firepower security appliances
• Must have a deep understanding of TCP/IP, subnetting, routing, and switching
• Strong Linux administration experience in production environments
• Experience with virtualization platforms
• Knowledge of network security principles and best practices
• Ability to troubleshoot across network and system layers

• Cisco Certified Network Associate (CCNA) or better
• Experience with configuration management tools (Ansible, Puppet)
• Experience with monitoring tools (Solar Winds, Nagios, Zabbix)
• Familiarity with cloud platforms (AWS, Azure, GCP)
• Scripting experience (Python, Bash)

Northstrat values true work life balance. We offer power of choice benefits designed to best meet the needs of you and your lifestyle. Our benefits programs are designed to support and encourage wellness, healthy living, retirement investment, and lifetime learning.

There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. We also offer competitive compensation, benefits, and professional development opportunities. Please refer to our Benefits section for additional details.

Northstrat does not mandate specific working hours. Although project requirements may dictate schedules, a Northstrat employee is only required to work an average of 8 hours per weekday over the course of a month. For example:
John worked 12 hours on June 1st to meet a project deadline. On June 15th, John only worked 4 hours because he left early for a long weekend. John's IBA was not debited for time off because flex time allowed him to carry over those 4 hours from June 1st.

To attract and retain the highest quality staff, Northstrat provides a unique and versatile benefits package, the Individual Benefit Account (IBA), which places the power of choice in the hands of our greatest asset - the employee.

The purpose of the IBA is to provide attractive benefits to all full‑time employees of Northstrat on a flexible basis that enables each covered employee to select a package that best suits his or her needs. Whether those needs are paid time off, medical expenses, prescription drug expenses, cash disbursement, or a combination of any of these, the IBA provides flexibility to help you meet…