Sr. Network Engineer

A large networking company is seeking an experienced Network Engineer with strong expertise in both Juniper and Cisco networking hardware to join their IT team. This role's primary responsibility is to lead and execute the migration of existing Juniper hardware to Cisco networking and security infrastructure, as well as to support day-to-day network operations. The ideal candidate will be highly proficient in configuring, deploying, and troubleshooting Cisco switches, routers, and security appliances, and possess solid hands-on experience with Juniper devices. This position is based in Fulton, MD, with occasional travel to co-location facility in Ashburn, VA.

What You'll Do
• Provide daily operational support for network infrastructure, including monitoring, performance tuning, and troubleshooting for both legacy (Juniper) and new (Cisco) systems.
• Respond to and resolve network incidents, ensuring optimal network performance and reliability.
• Perform routine hardware and software upgrades, patches, and preventive maintenance.
• Assist with ongoing management of network assets, including accurate updates to asset management systems.

Installation & Configuration:
• Install, configure, and optimize Cisco switches, routers, firewalls, and other networking/security devices.
• Integrate Cisco hardware into existing infrastructures, ensuring interoperability and compliance with organizational standards.

Documentation & Asset Management:
• Maintain thorough and up-to-date documentation of network topologies, device configurations, daily operations, and migration activities.
• Update asset management records to reflect all changes in hardware and configurations.

Network Security:
• Implement and manage Cisco security solutions to ensure robust network protection.
• Conduct regular security assessments and vulnerability mitigation as part of ongoing maintenance.

Collaboration & Training:
• Work closely with cross-functional teams to resolve complex networking issues and support business initiatives.
• Provide training and support for IT staff regarding Cisco platforms and post-migration environments.

Other Duties:
• Participate in routine datacenter maintenance and on-site support as required.
• Assist with cabling and physical network installations within the datacenter.

Pay Range for this role: $58 - $60

We are a company committed to creating diverse and inclusive environments where people can bring their full, authentic selves to work every day. We are an equal opportunity/affirmative action employer that believes everyone matters. Qualified candidates will receive consideration for employment regardless of their race, color, ethnicity, religion, sex (including pregnancy), sexual orientation, gender identity and expression, marital status, national origin, ancestry, genetic factors, age, disability, protected veteran status, military or uniformed service member status, or any other status or characteristic protected by applicable laws, regulations, and ordinances. If you need assistance and/or a reasonable accommodation due to a disability during the application or recruiting process, please send a request to View email address on click.appcast.io learn more about how we collect, keep, and process your private information, please review Insight Global's Workforce Privacy Policy:


Required Skills & Experience
• Bachelor's degree in Computer Science, Information Technology, or related field, or equivalent experience.
• 3+ years hands-on experience with Juniper and Cisco networking hardware, including configuration, deployment, troubleshooting, and migrations.
• Proven experience leading network migration projects, especially Juniper to Cisco.
• Strong knowledge of Cisco security appliances (e.g., ASA, Firepower, ISE) and best practices.
• Experience supporting daily network operations in an enterprise environment.
• Solid understanding of TCP/IP, routing, switching, VLANs, VPNs, and network security protocols.


Nice to Have Skills & Experience
• Cisco CCNP or higher certification
• Juniper JNCIS or JNCIP certification.
• Experience in large-scale enterprise network environments.
• Familiarity with datacenter management tools (e.g., Device42).


Benefit packages for this role will start on the 1st day of employment and include medical, dental, and vision insurance, as well as HSA, FSA, and DCFSA account options, and 401k retirement account access with employer matching. Employees in this role are also entitled to paid sick leave and/or other paid time off as provided by applicable law.