Jobs in the United States

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Added 3 mins ago
Senior System Engineer
Torch Technologies, Inc.
Huntsville, AL
Torch Technologies is seeking a Senior System Engineer to join a team researching, integrating, and developing solutions for Artificial Intelligence and Machine Learning. This position…
Added 3 mins ago
Dynatrace Engineer
Strategic Staffing Solutions
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The Senior IT Engineer / Software Developer will serve as a technical lead responsible for implementing, deploying, configuring, integrating, and supporting Dynatrace across complex…
Added 4 mins ago
Sr. Model Based CAD and Characterization Applications Engineer
modis
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Akkodis is seeking a Senior Model-Based CAD and Characterization Applications Engineer for a contract job in Costa Mesa, California. This position requires deep, hands-on Siemens NX…
Added 4 mins ago
AI Engineer - Global Servicing Technology
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…partnering with stakeholders to support use cases from inception to…
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Systems Engineer Senior - Identity Management
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United States
The Systems Engineer Senior must have:
Added 6 mins ago
Senior Windows Endpoint Engineer
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Must Reside in the US
Added 7 mins ago
Sr. Software Engineer, Core AI
Navan
CA or San Francisco, CA · Palo Alto, CA
We are building a fleet of specialized AI services that improve high-value human workflows across the company. As a Senior Software Engineer, Core AI, you will design, build, evaluate, and…
Added 7 mins ago
Sr. Software Engineer, Core AI
Navan
NY · Palo Alto, CA
We are building a fleet of specialized AI services that improve high-value human workflows across the company. As a Senior Software Engineer, Core AI, you will design, build, evaluate, and…
Added 8 mins ago
Regional Fire & Life Safety Principal
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Build and sustain senior client relationships with key clients, owners, developers, contractors, engineers, and industry stakeholders in the local area
Added 8 mins ago
Regional Fire & Life Safety Principal
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Los Angeles, CA
Build and sustain senior client relationships with key clients, owners, developers, contractors, engineers, and industry stakeholders in the local area
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Regional Fire & Life Safety Principal
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Dallas, TX
Build and sustain senior client relationships with key clients, owners, developers, contractors, engineers, and industry stakeholders in the local area
Added 8 mins ago
Regional Fire & Life Safety Principal
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Austin, TX
Build and sustain senior client relationships with key clients, owners, developers, contractors, engineers, and industry stakeholders in the local area
Added 8 mins ago
Chief Engineer
Tiberius Aerospace Inc.
United States
We’re looking for a Chief Engineer to serve as the senior technical authority for assigned Tiberius programs and lead complex aerospace and defense systems from requirements and…
Added 8 mins ago
Chief Engineer
Tiberius Aerospace Inc.
United States
We’re looking for a Chief Engineer to serve as the senior technical authority for assigned Tiberius programs and lead complex aerospace and defense systems from requirements and…
Added 14 mins ago
Senior Manager - DevOps
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Remote, United States
We are looking for a Senior Manager, DevOps to join our growing Product & Technology organization. You will work alongside our existing Senior Managers in DevOps, leading a talented team of…
Added 18 mins ago
Design Engineer
American Water
Camden, NJ
The Design Engineer is responsible for executing detailed engineering design for capital investment projects addressing water and wastewater treatment, pumping, and conveyance facilities.…
Added 19 mins ago
Senior HVAC Engineer
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…truly autonomous buildings. We’re looking for a Mechanical Engineer who brings deep knowledge of HVAC system design, commissioning, and field implementation - someone who understands how…
Added 19 mins ago
Sr Cybersecurity Engineer
MSC Industrial Supply Co.
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The Senior Cybersecurity Engineer is a senior technical contributor responsible for designing, implementing, operating, and continuously improving enterprise cybersecurity controls across…
Added 19 mins ago
Civil Engineer III or Senior Civil Engineer – McGuire Nuclear Station
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However, hybrid employees must live within a reasonable commute to their designated Duke Energy facility, not greater than 50 miles one way
Added 19 mins ago
Database Infrastructure Engineer VI
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The IT Database Infrastructure Engineer VI is a senior technical leader responsible for the architecture, engineering, governance, and strategic direction of enterprise database platforms…
Added 20 mins ago
Protection and Control Engineer
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The P&C Engineer supports the engineering, design, and implementation of protection and control systems across NEEC’s substation and renewable energy projects. This position is responsible…
Added 24 mins ago
Senior IT Engineer
Action1
Remote, United States
We are hiring a Senior IT Engineer to strengthen our corporate IT systems and security. You will work directly with the Head of IT, share daily operations with our EU-based Systems…
Added 32 mins ago
Principal Software Engineer
TransCore
Norcross, GA
TransCore (TRN), a subsidiary of ST Engineering, is seeking a Principal Software Engineer to join our growing Smart Mobility Ecosystems team and help shape the architecture and technical…
Added 33 mins ago
Senior Engineer, Corporate Systems & Finance Technology
at Marriott
Bethesda, MD
The Application Solution Engineer for Oracle Enterprise Performance Management (EPM) is a subject-matter expert responsible for the design, implementation, and optimization of the full EPM…
Added 38 mins ago
Industrial Program Engineer
Shape Corporation
Trenton, OH
Position Summary: The Industrial Program Engineer (IPE) will execute work package tasks and ensure their accomplishment with the support of the extended team and be accountable for Program…

Closed listing

Senior Network Engineer

Jefferson City, MO, United States

· The Salary for this position will be $99,000 and $115, 000 yearly depending on experience and other qualifications of the successful candidate.

This opening has closed.

The original listing is kept below for reference.

Find open jobs More jobs with this employer

About employer

Job details

Pay: · The Salary for this position will be $99,000 and $115, 000 yearly depending on experience and other qualifications of the successful candidate.
Experience: · 8+ years of enterprise network engineering experience, including at least 3 years in a senior or L3 role.
Posting language: English
Posted: Nov 9, 2026

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Original job description

Archived listing. The details below describe a past opening.

Job Summary

We are seeking an experienced Senior Network Engineer to design, implement, secure, operate, and optimize enterprise data-center, campus, branch, wireless, and hybrid-cloud networks. The role requires advanced hands-on expertise in F5 BIG-IP, Palo Alto Networks, Cisco ACI, Cisco Nexus, Cisco Meraki, cloud networking, and enterprise DDI platforms. The engineer will serve as an L3 escalation point, lead major-incident troubleshooting, execute migrations and lifecycle upgrades, perform root cause analysis, and collaborate with security, cloud, application, server, and architecture teams.

Key Responsibilities

Network Engineering and L3 Operations

· Own complex P1/P2 incidents involving routing, switching, wireless, firewalls, load balancing, DNS, DHCP, IPAM, VPN, SD-WAN, and hybrid-cloud connectivity.

· Lead troubleshooting bridges, analyze packet captures and telemetry, restore service, document root cause, and implement permanent corrective actions.

· Prepare and execute implementation, validation, risk, dependency, and rollback plans for production changes and maintenance windows.

· Maintain network diagrams, standards, operating procedures, inventory, capacity plans, lifecycle roadmaps, and disaster-recovery documentation.

· Participate in on-call support, vulnerability remediation, compliance reviews, and vendor escalation activities.

F5 BIG-IP

· Configure and troubleshoot F5 BIG-IP LTM, including virtual servers, pools, nodes, monitors, profiles, SNAT, persistence, traffic policies, and SSL offload.

· Manage SSL/TLS certificates, ciphers, health checks, high availability, upgrades, backup, and recovery.

· Develop and troubleshoot iRules; experience with F5 DNS/GTM and Advanced WAF/ASM is preferred.

· Resolve latency, session persistence, SSL handshake, health-monitor, and traffic-distribution issues.

Palo Alto Networks

· Administer Palo Alto firewalls and Panorama, including zones, security policies, NAT, objects, App-ID, User-ID, URL filtering, threat profiles, and logging.

· Troubleshoot sessions, routing, policy matching, NAT, IPsec VPN, GlobalProtect, and application connectivity using logs, CLI tools, and packet captures.

· Perform PAN-OS upgrades, rulebase cleanup, recertification, migrations, and security-hardening activities.

Cisco ACI and Nexus

· Design and troubleshoot Cisco ACI fabrics using APIC, tenants, VRFs, bridge domains, application profiles, EPGs, contracts, filters, VMM integration, and L3Out.

· Configure Cisco Nexus 3K/5K/7K/9K platforms using VLANs, trunks, vPC, STP, HSRP, OSPF, BGP, VXLAN, and EVPN.

· Troubleshoot endpoint learning, contracts, routing adjacency, fabric health, interfaces, port channels, and Layer 2/Layer 3 connectivity.

· Support data-center migrations, segmentation, fabric expansion, software upgrades, and hardware refresh programs.

Cisco Meraki

· Design, deploy, and administer Cisco Meraki MX security appliances, MS switches, MR wireless access points, and the Meraki Dashboard.

· Configure Auto VPN, SD-WAN, traffic shaping, content and security policies, VLANs, DHCP, site-to-site VPN, client VPN, and high availability.

· Plan wireless networks using RF fundamentals, channel and power optimization, SSIDs, authentication, guest access, and roaming.

· Monitor organization and network health, analyze event logs and packet captures, manage templates and firmware, and troubleshoot branch, LAN, WAN, and Wi-Fi issues.

· Use Meraki APIs and automation workflows for inventory, configuration validation, monitoring, and large-scale deployment.

Cloud Networking

· Design and support Microsoft Azure and AWS connectivity across cloud and on-premises data centers.

· Azure: VNets, subnets, NSGs, UDRs, Load Balancer, Application Gateway, Azure Firewall, VPN Gateway, ExpressRoute, Private Link, and DNS.

· AWS: VPCs, subnets, route tables, Security Groups, NACLs, Transit Gateway, Elastic Load Balancing, Direct Connect, Route 53, PrivateLink, and Site-to-Site VPN.

· Troubleshoot asymmetric routing, overlapping address space, DNS, MTU, VPN, firewall, load-balancing, and cloud-to-data-center connectivity.

· Implement automation and Infrastructure as Code using Python, Ansible, Terraform, REST APIs, JSON, YAML, and Git.

DDI: DNS, DHCP and IPAM

· Administer enterprise DDI platforms, preferably Infoblox Grid, including DNS zones and records, DHCP scopes, reservations, failover, IPAM, and role-based access.

· Troubleshoot recursive and authoritative DNS, forwarding, delegation, DNSSEC, DHCP allocation, lease, and address-management issues.

· Maintain address plans, naming standards, DNS/DHCP resiliency, automation workflows, reports, upgrades, backups, and disaster-recovery procedures.

Required Qualifications

· Bachelor's degree in Computer Science, Information Technology, Engineering, or equivalent practical experience.

· 8+ years of enterprise network engineering experience, including at least 3 years in a senior or L3 role.

· Advanced knowledge of TCP/IP, IPv4/IPv6, VLANs, STP, vPC, HSRP/VRRP, OSPF, BGP, VPN, QoS, NAT, wireless networking, and packet analysis.

· Hands-on production experience with F5 BIG-IP LTM, Palo Alto firewalls/Panorama, Cisco ACI/APIC, Cisco Nexus, and Cisco Meraki.

· Practical Azure and/or AWS networking experience, including private connectivity to on-premises environments.

· Hands-on DNS, DHCP, and IPAM experience with Infoblox or a comparable enterprise DDI solution.

· Experience with Wireshark, tcpdump, network monitoring, ITIL incident/problem/change processes, and technical documentation.

· Strong communication skills and the ability to coordinate high-severity incidents and complex changes.

Preferred Certifications and Skills

· F5 Certified BIG-IP Administrator or F5 Certified Technology Specialist.

· Palo Alto Networks Certified Network Security Engineer (PCNSE).

· Cisco CCNP Enterprise or CCNP Data Center; CCIE is an advantage.

· Cisco Meraki Solutions Specialist (CMSS), ECMS training, or equivalent Meraki implementation experience.

· Microsoft Certified: Azure Network Engineer Associate or AWS Certified Advanced Networking - Specialty.

· Infoblox accreditation or equivalent enterprise DDI training.

· Experience with SolarWinds, Splunk, LogicMonitor, ThousandEyes, NetBox, ServiceNow, Git, CI/CD, SASE, SD-WAN, and Zero Trust segmentation.

Core Competencies

Technology Area

Expected Proficiency

Key Capabilities

F5 BIG-IP

Advanced

LTM, SSL, HA, iRules; DNS/GTM and WAF preferred

Palo Alto

Advanced

PAN-OS, Panorama, policy, NAT, VPN, threat controls

Cisco ACI

Advanced

APIC, EPGs, contracts, L3Out, fabric troubleshooting

Cisco Nexus

Advanced

vPC, OSPF, BGP, VXLAN/EVPN, data-center switching

Cisco Meraki

Advanced

MX, MS, MR, Dashboard, Auto VPN, SD-WAN, Wi-Fi

Cloud Networking

Intermediate to Advanced

Azure/AWS, ExpressRoute/Direct Connect, VPN, load balancing

DDI

Intermediate to Advanced

Infoblox, DNS, DHCP, IPAM, resiliency

Automation

Preferred

Python, Ansible, Terraform, APIs, Git

Success Measures

· High network availability and timely restoration of critical services.

· Reliable delivery of changes with complete validation and rollback readiness.

· Reduction in repeat incidents through effective RCA and corrective actions.

· Improved security posture, lifecycle compliance, capacity, and operational documentation.

· Measurable automation of repeatable configuration, validation, inventory, and reporting tasks.

Salary and Benefits

· The Salary for this position will be $99,000 and $115, 000 yearly depending on experience and other qualifications of the successful candidate.

· This position is also eligible for Cognizant’s discretionary annual incentive program, based on performance and subject to the terms of Cognizant’s applicable plans.

· Benefits: Cognizant offers the following benefits for this position, subject to applicable eligibility requirements:

· Medical/Dental/Vision/Life Insurance

· Paid holidays plus Paid Time Off

· 401(k) plan and contributions

· Long-term/Short-term Disability

· Paid Parental Leave

· Employee Stock Purchase Plan

· Disclaimer: The compensation, and benefits information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable law.

Cognizant is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law.

About employer

More about this job

Skills

Troubleshooting
Root cause analysis
DNS
DHCP
VPN
WAN
Implement ICT recovery system
Documentation
Regulatory compliance
Troubleshoot
OSPF
BGP
Firmware
LAN
Microsoft Azure
AWS
Route
Infrastructure as code
Python
Ansible
IBM Terraform
API development
Git
Computer science
Computer technology
VRRP
Wireshark
Tcpdump
ITIL
Communication skills
CCNP
AWS certification
SolarWinds
Splunk
ServiceNow
CI/CD
Reporting

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Work requirements

Jobs in the United States