Lexicon Solutions
4680 – Senior Network Infrastructure Engineer
Lexicon Solutions, Portland, Oregon, United States, 97204
Senior Network Infrastructure Engineer (2 Openings)
Location: inner SE Portland, OR (Hybrid – ~3 days/week on-site)
Type: 2-year contracts (potential for extension)
We’re supporting our client as they add two Senior Network Infrastructure Engineers to their Network & Server team. These roles focus on high‑availability, converged network infrastructure in a complex enterprise environment where reliability and safety really matter.
We’re recruiting for two senior‑level roles: Sr. Network Engineer – Firewall / Security Focus
Lead design, deployment, and support of next‑gen firewalls (Palo Alto preferred) in a highly segmented environment.
Help build out new network modules to isolate services (e.g., separating CCTV from rail environments) and reduce blast radius.
Serve as a primary/secondary SME for firewall policy, rule sets, and security best practices (PCI/HIPAA exposure is a plus).
Sr. Network Engineer – Wireless / Mobility (Cisco / Meraki) Focus
Own design and support of Cisco wireless controllers and Meraki environments across yards, facilities, and vehicles.
Support existing operations where vehicles use Wi‑Fi and cellular to offload CCTV footage, and help drive the long‑term move toward real‑time cellular connectivity across the fleet.
Work on projects involving mobile/vehicle RF, MPLS networking, and future cellular‑first architectures.
If you’re stronger on one side (firewalls or wireless/Meraki) but have strong route/switch fundamentals and are comfortable learning, our client is open to candidates who can grow into the tools.
In both roles, you’ll:
Plan, design, implement, and manage our client’s IT communication and network infrastructure, with an emphasis on high availability and security.
Support and improve a complex, converged environment: Cisco switches/routers, wireless, firewalls, VPN/remote access, and monitoring/platform tools.
Troubleshoot network and server issues in a
mission‑critical 24/7 environment , quickly resolving outages and degraded service in coordination with internal teams and vendors.
Integrate with Microsoft‑centric platforms:
Active Directory, M365 hybrid , virtualization, backup, and real‑time monitoring systems.
Participate in, and sometimes lead,
complex projects
from design through implementation and cutover.
Help drive
IT process maturity , documentation, and cross‑team collaboration as they continue to modernize their infrastructure and practices.
Some off‑hours / on‑call participation is expected to support critical systems.
Core background (senior‑level):
~ 4+ years of hands‑on experience in network management and network security in a complex enterprise setting.
Strong experience designing, implementing, and supporting multi‑site network environments.
Proven background supporting mission‑critical systems (public sector, utilities, transportation, healthcare, financial services, etc. all translate well).
Technical strengths we’re targeting (mix across both roles):
Strong
routing/switching (Cisco) and converged network design.
Firewall / Security role:
Next‑gen firewalls (ideally Palo Alto , but Fortinet/Check Point/etc. are also relevant).
Network segmentation, policy design, and rule‑set hygiene.
Wireless / Mobility role:
Cisco wireless controllers and Meraki wireless management.
Experience with large‑scale Wi‑Fi deployments and/or vehicle/yard environments is a plus.
Exposure to
MPLS , mobile/vehicle RF networking, CCTV, and voice/telephony is helpful.
Experience with
cloud/hybrid (Azure and/or AWS) is a nice‑to‑have.
Relevant certifications (CCNA/CCNP, Network+, Security+, Microsoft, etc.) are appreciated but not required.
Soft Skills & Culture Fit Our client is very focused on collaboration and communication as they raise IT maturity across the organization. They’re looking for someone who:
Communicates clearly with both technical and non‑technical stakeholders.
Can
translate technical tradeoffs into business language and help shape requirements.
Works well across teams instead of in silos.
Is curious, adaptable, and willing to learn new tools (e.g., Palo Alto, Meraki) as long as the core fundamentals are solid.
Cares about public service, safety, and reliability for the community.
#J-18808-Ljbffr
Type: 2-year contracts (potential for extension)
We’re supporting our client as they add two Senior Network Infrastructure Engineers to their Network & Server team. These roles focus on high‑availability, converged network infrastructure in a complex enterprise environment where reliability and safety really matter.
We’re recruiting for two senior‑level roles: Sr. Network Engineer – Firewall / Security Focus
Lead design, deployment, and support of next‑gen firewalls (Palo Alto preferred) in a highly segmented environment.
Help build out new network modules to isolate services (e.g., separating CCTV from rail environments) and reduce blast radius.
Serve as a primary/secondary SME for firewall policy, rule sets, and security best practices (PCI/HIPAA exposure is a plus).
Sr. Network Engineer – Wireless / Mobility (Cisco / Meraki) Focus
Own design and support of Cisco wireless controllers and Meraki environments across yards, facilities, and vehicles.
Support existing operations where vehicles use Wi‑Fi and cellular to offload CCTV footage, and help drive the long‑term move toward real‑time cellular connectivity across the fleet.
Work on projects involving mobile/vehicle RF, MPLS networking, and future cellular‑first architectures.
If you’re stronger on one side (firewalls or wireless/Meraki) but have strong route/switch fundamentals and are comfortable learning, our client is open to candidates who can grow into the tools.
In both roles, you’ll:
Plan, design, implement, and manage our client’s IT communication and network infrastructure, with an emphasis on high availability and security.
Support and improve a complex, converged environment: Cisco switches/routers, wireless, firewalls, VPN/remote access, and monitoring/platform tools.
Troubleshoot network and server issues in a
mission‑critical 24/7 environment , quickly resolving outages and degraded service in coordination with internal teams and vendors.
Integrate with Microsoft‑centric platforms:
Active Directory, M365 hybrid , virtualization, backup, and real‑time monitoring systems.
Participate in, and sometimes lead,
complex projects
from design through implementation and cutover.
Help drive
IT process maturity , documentation, and cross‑team collaboration as they continue to modernize their infrastructure and practices.
Some off‑hours / on‑call participation is expected to support critical systems.
Core background (senior‑level):
~ 4+ years of hands‑on experience in network management and network security in a complex enterprise setting.
Strong experience designing, implementing, and supporting multi‑site network environments.
Proven background supporting mission‑critical systems (public sector, utilities, transportation, healthcare, financial services, etc. all translate well).
Technical strengths we’re targeting (mix across both roles):
Strong
routing/switching (Cisco) and converged network design.
Firewall / Security role:
Next‑gen firewalls (ideally Palo Alto , but Fortinet/Check Point/etc. are also relevant).
Network segmentation, policy design, and rule‑set hygiene.
Wireless / Mobility role:
Cisco wireless controllers and Meraki wireless management.
Experience with large‑scale Wi‑Fi deployments and/or vehicle/yard environments is a plus.
Exposure to
MPLS , mobile/vehicle RF networking, CCTV, and voice/telephony is helpful.
Experience with
cloud/hybrid (Azure and/or AWS) is a nice‑to‑have.
Relevant certifications (CCNA/CCNP, Network+, Security+, Microsoft, etc.) are appreciated but not required.
Soft Skills & Culture Fit Our client is very focused on collaboration and communication as they raise IT maturity across the organization. They’re looking for someone who:
Communicates clearly with both technical and non‑technical stakeholders.
Can
translate technical tradeoffs into business language and help shape requirements.
Works well across teams instead of in silos.
Is curious, adaptable, and willing to learn new tools (e.g., Palo Alto, Meraki) as long as the core fundamentals are solid.
Cares about public service, safety, and reliability for the community.
#J-18808-Ljbffr