Senior Network Security Engineer

Start to End Networks LLC · Remote, US

RemoteFull-timeSeniorPublished Jul 22, 2026

Apply directly on Start to End Networks LLC’s careers site — no account needed.

About the role

Job Overview
Start to End Networks, LLC, Washington Technology Fast 50, Inc 5000 is a network and cyber security Professional services firm headquartered in Vienna, VA. We are a leading provider of technology solutions to Federal agencies in the DC Metro area and are a trusted teaming partner with Big Five Federal contractors. We hire and retain the best in industry with excellent compensation package and work life balance. Leveraging our staff’s technical expertise, and our vast network of partners, we continue to deliver 100% on time on budget solutions to our customers.

We are looking for a Senior Network Security Engineer (7-10 years' experience) to join our team of talented engineers/architects supporting a large Federal customer in Washington DC.

The Senior Network Security Engineer will support implementation of best practice solutions for network and security solutions and services. They will manage and implement network solutions using Cisco network products and technologies including but not limited to Cisco ISR 43xx/45xx/ASR 100x/Cisco Cat 9k/Cat 4k; OSPF/BGP, F5 Load Balancers, Spanning Tree, Virtual Switch Stack (VSS), IP Subnetting, IP Routing and Switching, and Palo Alto Firewalls and Cisco ISE.

The Engineers will provide Tier 3 support, implement and monitor network and security plans.

Description of Daily Duties:

  • Provide support to internal teams and Federal Agency on data networks and an and security solutions.
  • Work with internal teams and Federal Agency to manage, troubleshoot and monitor data solutions leveraging Routing Protocols (OSPF/BGP), Switching technologies (Spanning Tree, VSS).
  • Configure Palo Alto firewalls Rules; application ID, Thread Prevention, etc.
  • Manage and maintain data network and systems using Cisco Product lines.
  • Monitor Network performance using Solarwinds and take steps to ensure optimal performance.
  • Resolve issues related to Data Networks and escalate to Network Architecture if required,
  • Implement and troubleshoot enterprise network -related solutions/incidents/system outages
  • Respond to escalated incidents and service requests from Delivery/Operations Teams

What are we looking for?

  • Active or ability to get Public Trust Clearance
  • Cisco certifications preferred (not required ! ): CCNP, CCIE
  • 7-10+ years of experience with data networks with emphasis in Routing Protocols (OSPF/EIGRP), Switching Technologies (Spanning Tree, VSS).
  • Experience with Solarwinds Engineers ToolSet, SecureCRT, ServiceNow.
  • Hands on Experience with Panorama, Palo Alto Firewalls, Logical parititioning.
  • Cisco Platforms and Adjunct Administration, Maintenance, and Installation
  • Basic understanding of configuring Firewall Rules.
  • Demonstrated ability to collaborate with project teams and managers as a service provider
  • Strong team player and team mentor

Highly Desired

  • Experience with Infoblox management; DNS, DHCP, Grid configuration.
  • Experience with Zscaler (ZIA, ZPA, ZDX).

About Start to End Networks LLC:

Start to End Networks offers the following benefits.

  • Top Pay with Overtime.
  • Health/Dental/Vision Plans; PPO, HMO and HSA Plans.
  • Long Term/Short Term Disability, Life Insurance, AD&D Coverage
  • 3 weeks PTO
  • 10 Federal Holidays
  • 401k with company match.
  • Annual Tuition Reimbursement
  • 100 % Paid Parking

Job Type: Full-time

Benefits:

  • 401(k)
  • 401(k) matching
  • Dental insurance
  • Flexible schedule
  • Flexible spending account
  • Health insurance
  • Life insurance
  • Paid time off
  • Professional development assistance
  • Retirement plan
  • Tuition reimbursement
  • Vision insurance

Schedule:

  • Monday to Friday

Job Type: Full-time

Benefits:

  • 401(k)
  • 401(k) matching
  • Dental insurance
  • Health insurance
  • Life insurance
  • Paid time off
  • Professional development assistance
  • Referral program
  • Retirement plan
  • Tuition reimbursement
  • Vision insurance

Application Question(s):

  • Do you have hands on experience with BGP, OSPF, EIGRP.
  • Do you have hands on experience with Panorama and Palo Alto Firewalls?
  • Do you have experience with Zscaler, InfoBlox, SDWAN(These are desired skills)?
  • Are you a US Citizen?
  • Do you hold an Active Public Trust or Secret Clearance?

Experience:

  • configuring network equipment: 7 years (Preferred)

License/Certification:

  • Do you have hold any Cisco Certifications? (Preferred)

Work Location: Remote

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