The Senior Network Engineer will design, implement, and secure network infrastructures, utilizing technologies like Cisco and Juniper, while mentoring junior engineers.
Senior Network & Security Engineer
Location: New York Tri-State Area (NYC / Northern NJ / Fairfield–Westchester CT)
Work Model: Hybrid — 3 days on-site at primary data-center campus in Midtown Manhattan or Secaucus, NJ; 2 days WFH.
Clearance: None required, but ability to pass a Tier 2 public-trust background check is a must.
Travel: < 10 % (regional PoP / DR-site visits)About Us
AITHERAS, LLC is a customer-focused IT consulting firm delivering cost-effective, mission-critical solutions since 2002. We specialize in Data Analytics, Cloud Computing, IT Engineering, Application Development, and Cyber Security. Based in Rockville, MD, we’re ISO 9001:2015 certified, an SBA-designated Small Business, and an MBE-certified firm by MDOT. We partner with over 100 clients to create scalable, innovative solutions that drive success.What You’ll Do% TimeResponsibility40 %Design & Implementation – Build and migrate segmentation zones, VRFs, and BGP/OSPF fabrics across Cisco Nexus 9K, Juniper QFX/MX, and Palo Alto PA-Series.25 %Security & Visibility – Stand up TACACS+/Cisco ISE for AAA, integrate flow telemetry into Cisco Secure Network Analytics (StealthWatch), deploy taps/SPANs/Gigamon, and tune IDS/IPS policies for OT & IT.15 %Automation – Write and maintain Python/Ansible/Terraform pipelines (pyATS, Nornir, Jinja2) for golden-config generation, compliance drift detection, and CI/CD-based push-button rollouts.10 %Operations & Incident Response – Serve as L3 escalation and join a 1-week-per-6 on-call rotation; own post-mortems and MTTR metrics.10 %Documentation & Mentoring – Produce HLDs/LLDs, MOPs, and runbooks; coach junior engineers toward CCNP/PCNSE.Must-Have Qualifications
Location: New York Tri-State Area (NYC / Northern NJ / Fairfield–Westchester CT)
Work Model: Hybrid — 3 days on-site at primary data-center campus in Midtown Manhattan or Secaucus, NJ; 2 days WFH.
Clearance: None required, but ability to pass a Tier 2 public-trust background check is a must.
Travel: < 10 % (regional PoP / DR-site visits)About Us
AITHERAS, LLC is a customer-focused IT consulting firm delivering cost-effective, mission-critical solutions since 2002. We specialize in Data Analytics, Cloud Computing, IT Engineering, Application Development, and Cyber Security. Based in Rockville, MD, we’re ISO 9001:2015 certified, an SBA-designated Small Business, and an MBE-certified firm by MDOT. We partner with over 100 clients to create scalable, innovative solutions that drive success.What You’ll Do% TimeResponsibility40 %Design & Implementation – Build and migrate segmentation zones, VRFs, and BGP/OSPF fabrics across Cisco Nexus 9K, Juniper QFX/MX, and Palo Alto PA-Series.25 %Security & Visibility – Stand up TACACS+/Cisco ISE for AAA, integrate flow telemetry into Cisco Secure Network Analytics (StealthWatch), deploy taps/SPANs/Gigamon, and tune IDS/IPS policies for OT & IT.15 %Automation – Write and maintain Python/Ansible/Terraform pipelines (pyATS, Nornir, Jinja2) for golden-config generation, compliance drift detection, and CI/CD-based push-button rollouts.10 %Operations & Incident Response – Serve as L3 escalation and join a 1-week-per-6 on-call rotation; own post-mortems and MTTR metrics.10 %Documentation & Mentoring – Produce HLDs/LLDs, MOPs, and runbooks; coach junior engineers toward CCNP/PCNSE.Must-Have Qualifications
- 8+ years progressive experience in enterprise or service-provider networking.
- Deep expertise configuring and troubleshooting BGP, OSPF, static routing, VRFs, VXLAN-EVPN.
- Hands-on with Cisco Catalyst/Nexus & ASA/FTD, Juniper EX / QFX / MX, and Palo Alto NGFWs (Pan-OS 9/10).
- Solid command of AAA (TACACS+, RADIUS) and production deployments of Cisco ISE or equivalent.
- Practical experience deploying or operating flow-analytics / tap infrastructure (StealthWatch, Gigamon, NetFlow/IPFIX, SPANs).
- Comfort writing Python and Ansible playbooks; git-based workflows (GitLab/GitHub, CI pipelines).
- Familiarity with network IDS/IPS (Snort, Zeek, Palo Alto Threat Prevention) and SIEM workflows (Splunk, QRadar).
- Ability to create HLD/LLD diagrams in Visio or draw.io and present them to technical & business leadership.
- U.S. work authorization and ability to commute to NYC area 3× week.
- CCNP Enterprise/Security, PCNSE, JNCIS-ENT/Sec, or CCIE (R&S / Enterprise).
- Cisco Secure Network Analytics design experience (flow collector sizing, policy tuning).
- Prior exposure to industrial / OT networks (NIST 800-82, Purdue Model, SCADA segmentation).
- AWS or Azure Advanced Networking certification; Transit Gateway design experience.
- Experience with F5 LTM/GTM or Citrix ADC in low-latency trading or fintech environments.
- Source-of-truth & intent platforms (NetBox, Nautobot), RESTful API development, or Go/Rust scripting.
- Base Salary: FTE: 135K-140K or $90-$100 C2C/1099
- FTE Benefits: 100 % employer-paid medical / dental / vision, 401(k) 5 % match, ESPP
- FTE Training: $3 k annual cert stipend, paid time for labs & conferences (Cisco Live, Palo Alto Ignite)
Top Skills
Aaa
Ansible
Asa
AWS
Azure
Bgp
Cisco Catalyst
Cisco Ise
Cisco Nexus 9K
Citrix Adc
F5 Ltm
Ftd
Gigamon
Juniper Qfx/Mx
Netflow
Ospf
Palo Alto Pa-Series
Python
Qradar
Snort
Splunk
Stealthwatch
Terraform
Visio
Vrfs
Vxlan-Evpn
Zeek
Similar Jobs
AdTech • Cloud • Digital Media • Information Technology • News + Entertainment • App development
The Sr. Network Engineer will maintain NBCUniversal's corporate and broadcast networks, troubleshoot issues, and collaborate with teams and vendors, participating in on-call rotations.
Top Skills:
AnsibleAristaBgpCisco AciDmzEvpnFirewallsNatOspfPythonQosRouting And SwitchingSecurity RulesVxlan
Cloud
The Senior Network Engineer will build, maintain, and operate Fastly's global network infrastructure, manage traffic incidents, and innovate monitoring solutions.
Top Skills:
AnsibleAnycastAWSAzureBgpDnsGCPGitGoGrafanaGraphiteIpJenkinsLinuxPrometheusPythonSplunk
Co-Working Space or Incubator • Events • Other • Professional Services • Real Estate • Hospitality
The Senior Network Engineer will develop and maintain network architecture, support network automation projects, and oversee security infrastructure across various locations.
Top Skills:
AnsibleAsaAWSCisco IosContainerizationIgmpJuniper JunosK8SL2L VpnMplsPimRhelSd-WanVirtual EnvironmentsVplsWifi
What you need to know about the NYC Tech Scene
As the undisputed financial capital of the world, New York City is an epicenter of startup funding activity. The city has a thriving fintech scene and is a major player in verticals ranging from AI to biotech, cybersecurity and digital media. It also has universities like NYU, Columbia and Cornell Tech attracting students and researchers from across the globe, providing the ecosystem with a constant influx of world-class talent. And its East Coast location and three international airports make it a perfect spot for European companies establishing a foothold in the United States.
Key Facts About NYC Tech
- Number of Tech Workers: 549,200; 6% of overall workforce (2024 CompTIA survey)
- Major Tech Employers: Capgemini, Bloomberg, IBM, Spotify
- Key Industries: Artificial intelligence, Fintech
- Funding Landscape: $25.5 billion in venture capital funding in 2024 (Pitchbook)
- Notable Investors: Greycroft, Thrive Capital, Union Square Ventures, FirstMark Capital, Tiger Global Management, Tribeca Venture Partners, Insight Partners, Two Sigma Ventures
- Research Centers and Universities: Columbia University, New York University, Fordham University, CUNY, AI Now Institute, Flatiron Institute, C.N. Yang Institute for Theoretical Physics, NASA Space Radiation Laboratory
