Network Security Engineer

2 weeks ago

Tennessee, United States REKRUITD Full time

***This is extensive travel position to client sites - client will pay for the travel.

Contract – 6+ months to start

They keys are:

Manufacturing environment

OT – operational technology

Cisco Firepower in Transparent mode – understanding the limitations in this mode and the nuances

Extensive travel

Looking for experience in OT environments such as Manufacturing, Utilities or Critical Infrastructure

Must have the below:

  • Be able to communicate clearly and confidently (i.e., excellent communication skills and abilities).
  • It is an absolute imperative the candidates sent to have real-life experience as far as performing IT/OT segmentation within industrial control environments. Not managing, but the actual implementation and troubleshooting.
  • First hand experience implementing and troubleshooting Cisco Firepower Threat Defense (FTD) appliances in Transparent Mode.
  • Knowledge and familiarity with Meraki switches – as it relates to logical segmentation of network traffic
  • Familiarity and exposure to OT protocols to support troubleshooting connectivity and latency issues that may arise due to introduction of Firepower in Transparent Mode.

Position description:

  • Travel frequently to operational facilities to carry out on-site security deployments and network enhancements.
  • Configure and optimize Cisco security devices to establish secure segmentation and isolation between control and enterprise zones.
  • Replace outdated or unmanaged switching equipment with modern network hardware, ensuring proper VLAN design and segmentation.
  • Support the deployment and configuration of Meraki switches and other network components to align with security and performance objectives.
  • Collaborate with field technicians and plant teams during hardware setup and implementation activities (including limited rack-and-stack work).
  • Support wireless infrastructure refresh efforts when required.
  • Conduct testing and validation of traffic flows, failover paths, and segmentation using Cisco and SD-WAN solutions.
  • Maintain clear documentation of site activities, configurations, and findings.
  • Work closely with cross-functional security and operations teams to minimize downtime and ensure successful cutovers.

Responsibilities:

  • Practical, hands-on experience with enterprise-grade Cisco security platforms (Firepower preferred).
  • Experience implementing VLANs and segmentation using Meraki or equivalent switch technologies.
  • Familiarity with SD-WAN connectivity and integration within segmented OT networks.
  • Working knowledge of cybersecurity principles and frameworks such as NIST and IEC 62443.
  • Background supporting industrial control systems, utilities, or other critical operations.
  • Strong analytical and troubleshooting ability in complex network environments.
  • Excellent written and verbal communication skills with attention to detail.
  • Willingness to travel extensively (up to 90% of the time).

Preferred Experience:

  • Industry certifications (e.g., Cisco Security, CISSP, GICSP, or ISA/IEC
  • Experience implementing wireless access infrastructure.
  • Awareness of physical security and safety requirements in industrial settings.

***This is a field-based position involving regular work at manufacturing and infrastructure sites. Candidates must be comfortable working around operational equipment and industrial environments.

  • Sr. Sales Engineer

    8 hours ago

    Tennessee, United States Rubrik Security Cloud Full time

    Rubrik's sales organization is a united group of elite cross-functional sales professionals that help companies & government entities achieve resilience against cyberattacks, malicious insiders, and operational disruptions. We offer continuous professional development through our world class sales enablement program and our One Rubrik selling approach...

  • Network Operations Assistant

    4 days ago

    Tennessee, United States Frontier Full time

    Network Operations AssistantAs the largest pure-play fiber provider in the U.S., we deliver blazing-fast broadband connectivity that unlocks the potential of millions of consumers and businesses. As a Frontier employee, you will be part of our purpose of Building Gigabit America—creating the digital infrastructure that the country needs to thrive today and...

  • Strategic Account Executive

    2 days ago

    Tennessee, United States Rubrik Security Cloud Full time

    About the team & role:Rubrik's sales organization is a united group of elite cross-functional sales professionals that help companies & government entities achieve resilience against cyberattacks, malicious insiders, and operational disruptions. We offer continuous professional development through our world class sales enablement program and our One Rubrik...

  • Senior Engineer

    4 days ago

    Tennessee, United States Qualus Full time

    Power your future with Qualus asa Senior Substation Engineer. Substation Design Engineers are responsible for designing substations utilizing applicable codes and client standards (if available). Typical design to include general arrangement, equipment and electrical layout, elevation views, cable trench, grounding, conduit drawings, details, bills of...

  • Engineering Audit

    4 days ago

    Tennessee, United States Structonix Full time

    Note:We encourage students currently studying in any university in USA majors with ""Electrical Engineering, Mechanical Engineering, Civil Engineering, Manufacturing Engineering, Materials Engineering, Packaging Engineering, Biomedical Engineering, Chemical Engineering, Safety and Supply Chain"). to apply.Applications from students the outside USA can't be...

  • Kubernetes Platform Engineer, Task and Technical Lead

    2 weeks ago

    Tennessee (TN), United States ORNL Full time $120,000 - $180,000 per year

    Requisition Id 15519 Overview:The National Center for Computational Sciences (NCCS) at Oak Ridge National Lab (ORNL), which hosts several of the world's most powerful computer systems, is seeking highly qualified individuals to play a key role in improving the security, performance, and reliability of the NCCS computing infrastructure which supports...

  • Infrastructure Security and Compliance Specialist I

    1 week ago

    Tennessee, United States Centauri Health Solutions, Inc Full time

    Centauri Health Solutions provides technology and technology-enabled services to payors and providers across all healthcare programs, including Medicare, Medicaid, Commercial and Exchange. In partnership with our clients, we improve the lives and health outcomes of the members and patients we touch through compassionate outreach, sophisticated analytics,...

  • Senior Structural Engineer

    2 weeks ago

    Tennessee, United States The Adecco Group Full time $120,000 - $150,000 per year

    Our client, an engineering design and consulting firm, is hiring aSenior Structural Engineer (PE)inChattanooga, TN,to lead and support the design/delivery of commercial and industrial construction projects.**Relocation assistance is available**Responsibilities:Manage projects from proposal through completion, ensuring delivery of high-quality commercial and...

  • Provider Digital Principal Software Engineer

    2 weeks ago

    Tennessee, United States CVS Health Full time

    At CVS Health, we're building a world of health around every consumer and surrounding ourselves with dedicated colleagues who are passionate about transforming health care.As the nation's leading health solutions company, we reach millions of Americans through our local presence, digital channels and more than 300,000 purpose-driven colleagues - caring for...

  • CDL-A Owner Operator Truck Driver

    1 week ago

    Tennessee, United States Evans Network of Companies Full time

    As part of The Evans Network of Companies, you'll have the opportunity to build your business while enjoying a variety of freight opportunities and steady earnings. We empower CDL-A Owner-Operators with the independence to run their own business-backed by a financially secure, trusted carrier. With The Evans Network of Companies' over 750 locations...