1630 - TNS Lead

Sigma Defense
Pope County, IL

Sigma Defense's Transport Network Services (TNS) team is seeking a charismatic Senior Network Engineer to join our team as the TNS Lead. The hired candidate will provide seamless continuity in leadership of the supported mission, the TNS team, and government leadership. This engineer should have the ability to provide guidance, strategic planning, and represent the TNS team and their endeavors as the central subject matter expert and manager of physical and talent resources to ensure the success of the team's future endeavors.

Equal Opportunity Employer/Veterans/Disabled: Sigma Defense Systems 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, or protected veteran status and will not be discriminated against on the basis of disability.

Requirements

  • 10-15 years of relevant experience.
  • Ability to conduct in-depth log analysis and root-cause isolation.
  • DoD IAT 8570 (CCNP Sect+).
  • Ability to travel worldwide and to some austere environments (Travel will be no longer than 2 months at a time; multiple trips possible in a calendar year).
  • Demonstrated proficiency in layer 2 switching and layer 3 routing; designing of complex routing and switching schemes to support changing environments.
  • Deep understanding of and hands on experience with Cisco IOS, Cisco Firewalls and networking technologies is preferred.
  • Demonstrated proficiency in EIGRP,OSPF, STP, VTP, ACLs, and Layer 3 tunnels and understands how to monitor network devices to perform fault and root cause analysis.
  • Experience with Cisco, switches, routers, cryptographic devices, VPN, and VPN client.
  • Experience with supporting IP services to connect to NIPRNET/SIPRNET (IPv4, VPN, IPv6, Multicast, BGP, etc.).
  • Ability to analyze and evaluate networks, identify issues, and provide solutions.
  • Experience with security documentation and accreditation life cycles is preferred.
  • Understanding and working knowledge of BGP is preferred.
  • Excellent communication skills, both written and oral.
  • Strong interpersonal skills – team and customer-service oriented.
  • Strong organization, facilitation, and time management skills.
  • Ability to multi-task effectively, prioritize, and execute against multiple priorities.
  • Must be a U.S. citizen.

Education Requirements:

  • Bachelor's degree from an accredited college of university in Engineering, Information Technology, or related field of study.

Personnel Clearance Level:

  • Candidate must possess or have the ability to obtain an active TS/SCI security clearance or higher.
  • Clearance may be sponsored for the right candidate.

Essential Job Duties (not all-inclusive):

  • Oversee the team's efforts of developing, engineering, and testing network configurations, systems-monitoring, routine preventative maintenance, and site upgrades and integrations at customer locations.
  • Ensure the provided detailed technical documentation is up to date and accurate, including network diagrams, process flow charts and procedural guidelines.
  • Coordinate and facilitate the engineering efforts to configure, manage, and evaluate multi-protocol network elements for effective end-to-end communications.      
  • Responsible for reviewing, QCing, and approving the generating of test plans and instructions, collection and record test data and identify finding and any failed test parameters.
  • Oversee life cycle management of Government provided Cisco devices.
  • Travel to locations around the world for installation and upgrades of customer communications sites. (Travel will be no longer than 45 days per visit, but engineer can visit multiple locations in a year).
  • Lead a team of Senior Engineers supporting a worldwide architecture of customer focused equipment.
  • Manage TNS & TNS-B projects and timelines.
  • Manage/review/update tasks on GitLab.
  • Support SATOPS as back up for AS-Lead.
  • Approve timecards/PTO for TNS section.
  • Maintain and track inventory for TNS installs (tools, consumables).
  • Review and follow processes for all CM related documentation submitted under TNS section: ECR, DR, Test plans, RTS, etc.
  • Submit Regular Status reports to the Network Capability Lead and ASEC Site Lead.
  • Create, maintain, and update documentation: VDD, Baselines, ICDs, Diagrams, etc.

Salary Range: $130,000 - $140,000 annually.

Benefits

  • Dental and Vision Insurance
  • Medical Insurance to Include HSA, FSA, and DFSA Plans
  • Life and AD&D coverage
  • Employee Assistance Program (EAP)
  • 401(k) Plan with Company Matching Contributions
  • 160 Hours of Paid Time Off (PTO)
  • 12 (Floating) Holidays
  • Educational Assistance
  • Highly Competitive Salary
Posted 2026-02-17

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