Tier Three Network Engineer Jobs in Appleton, WI

A growing enterprise organization is seeking a Network Engineer III to serve as a senior technical resource responsible for the design, implementation, support, and optimization of complex network infrastructure. This role is ideal for an experienced network professional who enjoys solving challenging technical problems, driving modernization efforts, and influencing network strategy across the organization.

The successful candidate will possess deep expertise in enterprise networking technologies, security, cloud connectivity, and automation. This individual will also act as a senior escalation point and technical mentor to other engineers while helping shape the future direction of the network environment.

• Design, implement, maintain, and troubleshoot enterprise network infrastructure
• Configure and support Cisco routing and switching environments
• Administer and manage next-generation firewall platforms and security policies
• Design, deploy, and support cloud networking solutions, primarily within Microsoft Azure
• Lead and contribute to infrastructure modernization and automation initiatives utilizing Infrastructure as Code (IaC)
• Serve as the primary escalation point for complex network incidents and performance issues
• Collaborate with engineers, architects, and operational teams on enterprise networking projects
• Drive network performance, reliability, security, and business continuity initiatives
• Provide technical leadership, guidance, and mentorship to junior networking team members
• Participate in project planning, architecture discussions, and technical decision-making
• Develop and maintain network documentation, standards, and best practices

• Enterprise Network Engineering
• Cisco Routing & Switching
• Firewall Administration
• Network Troubleshooting
• Cloud Networking
• Microsoft Azure and/or AWS

• Experience supporting large-scale enterprise network environments
• Strong understanding of network security principles and best practices
• Experience with network automation and Infrastructure as Code (IaC)
• Ability to lead technical projects and influence architectural decisions
• Strong documentation and communication skills
• Experience mentoring junior engineers and providing technical leadership

senior / Expert Level

This is an opportunity to play a key role in the evolution of a modern enterprise network environment. The ideal candidate will bring a combination of hands-on technical expertise, strategic thinking, and leadership capabilities to support critical infrastructure initiatives, cloud adoption, automation efforts, and long-term network optimization.

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 Aug 19, 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.