Senior Network Engineer

Summary The Senior Network Engineer is responsible for the design, implementation, administration, maintenance, and support of enterprise network infrastructure and related services. This role ensures the availability, performance, and security of network systems including routers, switches, firewalls, VPN technologies, wireless infrastructure, voice platforms, and critical business applications. The engineer provides technical leadership in evaluating, designing, implementing, and optimizing network solutions while maintaining service levels and operational continuity. This position also develops and enhances network standards, procedures, and methodologies to support business objectives and evolving technology requirements. Key Responsibilities Design, implement, and maintain enterprise network infrastructure utilizing Cisco networking technologies. Configure and support routing protocols including EIGRP, OSPF, and BGP. Manage advanced IP networking technologies including VLANs, VPNs, load balancing, access control lists (ACLs), wireless networks, and firewalls. Install, configure, and support network management and monitoring platforms. Implement and support IP-based video and collaboration technologies. Evaluate emerging technologies and provide recommendations for infrastructure improvements and strategic initiatives. Develop technical documentation, implementation plans, standards, and operational procedures. Participate in projects related to network expansion, modernization, migration, and optimization. Troubleshoot and resolve complex network performance, connectivity, and infrastructure issues. Collaborate with infrastructure, security, systems, and application teams to support business objectives. Create and communicate project status updates and technical reports. Ensure adherence to organizational security, compliance, and operational standards. Research and assess new hardware, software, and networking technologies. Minimum Qualifications Education Bachelor's degree in Information Technology, Computer Science, Engineering, or a related field, or an equivalent combination of education and relevant experience. Experience Five (5)+ years of experience designing, implementing, and supporting enterprise TCP/IP network environments. Hands-on experience with Cisco routing and switching technologies. Experience designing, implementing, and supporting Cisco ACI environments, including Multi-Site Architecture (MSO) deployments. Experience with Layer 2 and Layer 3 network technologies, including VLAN design, SVI configuration, and migration efforts. Experience administering enterprise VPN solutions, including F5 APM. Experience deploying and managing Palo Alto Networks firewalls. Experience supporting data center networking environments. Experience troubleshooting complex network and infrastructure issues in enterprise environments. Certifications (Preferred) Cisco Certified Network Associate (CCNA) Cisco Certified Network Professional (CCNP) Cisco Certified Internetwork Expert (CCIE) Palo Alto certifications and other industry-recognized networking certifications are highly desirable. Required Skills & Technical Expertise Networking Expert knowledge of enterprise switching technologies, Spanning Tree, VLANs, trunking, and advanced routing concepts. Strong understanding of TCP/IP networking and enterprise architecture. Expertise with routing protocols including BGP, EIGRP, and OSPF. Experience with network segmentation, redundancy, high availability, and disaster recovery concepts. Security Experience with Palo Alto Networks firewalls, including GlobalProtect and large-scale enterprise deployments. Strong understanding of VPN technologies, access controls, and network security best practices. Familiarity with security monitoring, logging, and compliance requirements. Cisco Technologies Cisco ACI and Multi-Site Orchestrator (MSO) Cisco Catalyst and Nexus switching platforms Cisco DNA Center Cisco Identity Services Engine (ISE) Cisco 9800 Wireless LAN Controllers and wireless infrastructure Voice & Collaboration Experience supporting Cisco Unified Communications environments, including: CUCM UCCX Finesse Supporting voice infrastructure technologies Operations & Communication Ability to analyze and solve complex technical problems. Strong written and verbal communication skills. Ability to create technical documentation, procedures, and operational standards. Experience presenting technical recommendations to stakeholders and leadership. Ability to manage multiple priorities in a fast-paced environment. Preferred Experience Enterprise data center networking. Network automation and infrastructure-as-code concepts. Load balancing platforms. Cloud networking and hybrid infrastructure environments. Large-scale enterprise network modernization initiatives. Work Environment This position primarily operates in an office and data center environment. Occasional lifting, equipment installation, and travel between facilities may be required. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions of the position. Top Skills Network Engineering Cisco Routing & Switching Palo Alto Firewalls Data Center Networking Cisco ACI

BGP / OSPF / EIGRP

VPN Technologies Wireless Networking Network Security Troubleshooting & Root Cause Analysis Job Type & Location This is a Permanent position based out of Tucson, AZ. Pay and Benefits The pay range for this position is $100000.00 - $110000.00/yr. Individual compensation offered for this position within this range will depend on many factors, including qualifications, skills, relevant experience, job knowledge, geographic location, internal equity, and other pertinent job-related factors. 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) Workplace Type This is a fully onsite position in Tucson,AZ. Application Deadline This position is anticipated to close on Sep 18, 2026. About TEKsystems 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. About TEKsystems and TEKsystems Global Services 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. TEKsystems