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The Network Engineer III is a senior-level technical expert responsible for the architecture, implementation, optimization, and support of enterprise network infrastructure across a complex, multi-site environment. This role requires advanced expertise in routing, switching, network security, cloud networking, and infrastructure automation. The ideal candidate is a proactive problem-solver who thrives in fast-paced environments, demonstrates strong technical leadership, and remains current with emerging technologies and industry best practices.

• Design, implement, maintain, and troubleshoot enterprise network infrastructure supporting critical business operations.
• Engineer and support complex Cisco routing and switching environments, ensuring high availability, scalability, and performance.
• Administer, configure, and optimize next-generation firewalls, VPNs, and network security policies.
• Design, deploy, and support networking solutions within cloud platforms, with a primary focus on Microsoft Azure and exposure to AWS.
• Lead infrastructure modernization initiatives through automation and Infrastructure as Code (IaC) practices.
• Collaborate with network engineers, systems engineers, architects, and operational teams to deliver strategic technology projects.
• Serve as the highest level of escalation for complex network incidents, outages, and performance issues.
• Provide technical leadership, mentorship, and knowledge transfer to junior engineers and support staff.
• Drive network performance, reliability, security, and business continuity improvements.
• Participate in project planning, architecture reviews, capacity planning, and technology roadmaps.
• Create and maintain comprehensive technical documentation, network diagrams, standards, and operational procedures.

• 7+ years of progressive experience in network engineering within enterprise environments.
• Deep expertise in Cisco routing and switching technologies.
• Strong experience with enterprise firewall administration and network security best practices.
• Hands-on experience designing and supporting cloud networking solutions in Microsoft Azure; AWS experience is a plus.
• Strong troubleshooting skills across LAN, WAN, WLAN, SD-WAN, VPN, and hybrid-cloud environments.
• Experience with network automation, scripting, and Infrastructure as Code tools.
• Proven ability to lead technical initiatives and manage complex infrastructure projects.
• Excellent communication, collaboration, and documentation skills.

• Cisco certifications (CCNP, CCIE) or equivalent networking certifications.
• Experience with Azure networking services including ExpressRoute, Virtual WAN, Load Balancers, and Network Security Groups.
• Familiarity with SD-WAN technologies and network monitoring platforms.
• Experience with automation tools such as Ansible, Terraform, or PowerShell.

• Network Engineering
• Cisco Routing & Switching
• Enterprise Firewalls
• Cloud Networking (Azure, AWS)
• Network Troubleshooting
• Infrastructure Automation
• Network Security
• LAN/WAN Architecture
• VPN Technologies
• Technical Leadership & Mentorship

senior / Expert Level

This is a Contract to Hire position based out of Menasha, WI.

The pay range for this position is $25.00 - $55.00/hr.

Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following:
• Medical, dental & vision
• Critical Illness, Accident, and Hospital
• 401(k) Retirement Plan – Pre-tax and Roth post-tax contributions available
• Life Insurance (Voluntary Life & AD&D for the employee and dependents)
• Short and long-term disability
• Health Spending Account (HSA)
• Transportation benefits
• Employee Assistance Program
• Time Off/Leave (PTO, Vacation or Sick Leave)

This is a hybrid position in Menasha,WI.

This position is anticipated to close on Jul 22, 2026.

We're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change. That's the power of true partnership. TEKsystems is an Allegis Group company.

The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

We’re a leading provider of business and technology services. We accelerate business transformation for our customers. Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions. We’re a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who partner with us for our scale, full-stack capabilities and speed. We’re strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology. We’re building tomorrow by delivering business outcomes and making positive impacts in our global communities. TEKsystems and TEKsystems Global Services are Allegis Group companies. Learn more at TEKsystems.com.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

San Francisco Fair Chance Ordinance: Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.

Massachusetts Lie Detector: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.