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Sr. Network Engineer - F5
Chicago, or New York, Phoenix, AZ, Ny or Chicago or AZ
Posted: 10/06/2025
Employment Type:
Direct Hire
Job Number: 27420
Pay Rate: $ - $
Remote Friendly?: Hybrid
Job Description
Sr. Network Engineer - F5
HIGHLIGHTS
Location: Chicago, IL/ New York, NY/ Phoenix, AZ (Hybrid)
Position Type: Direct Hire
Hourly / Salary: BOE
Our client is looking for a Sr. Network Engineer - F5 to join their team!
Overall Purpose:
This position designs and maintains the hardware and software necessary for a hardened computer network. Provide high level technical analysis with a specialty in Local Area Networks (LANs) or Wide Area Networks (WANs). Focus on network design, performance, maintenance, problem resolution and hardware configuration
Essential Functions:
Essential Functions for Load Balancing/ F5 Focus Engineers:
Minimum Qualifications for Load Balancing/ F5 Focus Engineers:
Preferred Qualifications
Preferred Qualifications for Load Balancing/ F5 Focus Engineers:
Location: Chicago, IL/ New York, NY/ Phoenix, AZ (Hybrid)
Position Type: Direct Hire
Hourly / Salary: BOE
Our client is looking for a Sr. Network Engineer - F5 to join their team!
Overall Purpose:
This position designs and maintains the hardware and software necessary for a hardened computer network. Provide high level technical analysis with a specialty in Local Area Networks (LANs) or Wide Area Networks (WANs). Focus on network design, performance, maintenance, problem resolution and hardware configuration
Essential Functions:
- Design, configure, test, and maintain LAN/WAN equipment and related services for Web support
- Lead in the diagnosis, and resolve complex network problems
- Select network devices, and set network policies that adhere to Security guidelines
- Create and maintain comprehensive documentation for all implemented networks
- Maintain and support company’s LAN/WAN environment and Web Hosting Services
- Direct the maintenance, problem resolution and hardware configurations
- Direct the maintenance of all Firewalls and approve requested rule changes in the Firewall Review Board meetings
- Participate in 24x7 on-call and escalations, ensuring that Networking staff are fully trained to support all aspects of the network.
- Obtain and maintain required certifications
- Act as SME in the definition and policy making of network and security protocols.
- Comply with all security policies and procedures, to ensure that the highest level of system and data confidentiality, integrity and availability is maintained.
- Support the company’s commitment to risk management and protecting the integrity and confidentiality of systems and data.
- The above job description is not intended to be an all-inclusive list of duties and standards of the position. Incumbents will follow instructions and perform other related duties as assigned by their supervisor
Essential Functions for Load Balancing/ F5 Focus Engineers:
- Create and troubleshoot iRules and apply rules within the F5 appliances.
- Troubleshoot complex and escalated issues and debug services using problem determination tools and logs provided with the F5 appliances.
- Configure and Manage F5 using TMSH and BASH environments.
- Plan and execute firmware upgrades and system management deployments for major and minor upgrades in AWS Cloud and On-Prem VM/ADC devices.
- Education or experience equivalent to a bachelor’s degree in computer science or engineering
- Minimum 7 years work experience
- Hands-on experience implementing and administrating network devices, setting and maintaining policies and rights within a network environment
- Advanced knowledge with any of the following equipment or disciplines:
- Load balancers/ F5
- Firewalls
- Cisco and network switches
- Cisco routers
- Cisco VPN
- Palo Alto
- Linux/Windows Servers
- Telecom Services
- Strong understanding of common network monitoring and security utilities, Data Center technologies, securing local and remote networks and routing protocols (i.E. BGP, OSPF, EIGRP).
- A thorough understanding of the OSI network model, Ethernet, and TCP/IP networking
- Basic understanding of virtualization and its impact on network designs. Familiar with ESX and vSwitch technology.
- A practical level of experience implementing and administrating common TCP/IP-based services, including DNS, DHCP, HTTP, HTTPS, SFTP, SSH, SSL, SMTP, etc.
- Troubleshooting focused on determining hardware vs. Software, hardware vs. Firmware, software vs. Operating system, network vs. Application/systems, and patterned vs. Non-repeatable problems
- Ability to prioritize and multitask
- Willingness to learn new technologies and maintain industry knowledge
- Excellent oral and written communication skills
- Excellent interpersonal skills
Minimum Qualifications for Load Balancing/ F5 Focus Engineers:
- Full understanding of F5 processes and services required to maintain L1 thru L7 environments on the F5 using APM, ASM, iRule, and LTM modules.
- Required understanding and practical application of BigIQ deployment and management using AS3.
- Understanding of MTLS and Cert management on F5.
- Strong understanding of Ansible Automation Platform and Git.
- Hands on experience with TMSH and Bash environments on F5.
- Advanced experience creating and analyzing TCP level events using TCPDump and Wireshark
Preferred Qualifications
- Additional education and/or experience is preferred.
- Current Cisco, Palo Alto, Juniper or equivalent common industry certification, i.E. CCNP, CCIE, JNCIP
Preferred Qualifications for Load Balancing/ F5 Focus Engineers:
- BigIQ Training using GUI with AS3 Extension
- 301b+ Level Qualifications
- AWS Cloud Certs with background in CFT, DO, and Ansible Deploy