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Network Engineer (F5)

Dallas, TX · Information Technology
Job Purpose:
This role will perform design, implementation, and maintenance of load balancer/application delivery controller infrastructure using F5 Big-IP LTM/GTM/ASM and Kemp Load Balancers.

Essential Duties:

  • Implementation and maintenance of security devices.
  • Mentor less experienced engineers on the team.
  • Provide and maintain configuration standards for the infrastructure.
  • Administer and support F5 appliances throughout the organization.
  • Monitor security bulletins and mitigate as needed.
  • Recommend, design, implement, and support application delivery infrastructure integration into business solutions, while meeting the business’ goals and objectives. This includes supporting documentation and diagrams detailing the specific infrastructure.
  • Analyze network topologies and traffic/capacity requirements.
  • Work on project/tasks assigned to networking team.
  • Develop detailed project plans and implementation diagrams.
  • Assist in driving the development, testing and implementation of technology solutions.
  • Install, configure, and manage traffic management systems supporting Public Key Infrastructure (PKI), Domain Name System (DNS), load balancing and Multi-Factor Authentication (MFA).
  • Translate functional business requirements into a technical solution that conforms to global design standards.
  • Research developments in assigned technology disciplines, determining business requirements, proposing changes, and developing migration and implementation plans as needed.
  • Install, test, maintain and upgrade network operating systems software and hardware in accordance with release management requirements.
  • Provide input into the security technology plan for the organization and ensuring that plans for their assigned technology discipline integrate effectively with other aspects of the technical infrastructure.
  • Support large scale infrastructure migrations and baseline reviews.
  • Support changes in strict accordance with the change management policies, including developing design and implementation plans for approved changes.
  • Gain knowledge and experience in other network security technologies.
  • Propose appropriate changes to standards, policies, and procedures based on emerging business/technology trends and operational challenges with the existing guidelines utilizing performance metrics and operational SLAs as justification.
  • Conduct presentations via training sessions, or 1-to-1 training to network engineers on designs that are being implemented.
  • Configure and support application security policies via the F5 ASM and APM security modules.
Knowledge, Skills, and Abilities:
  • Must be able to work unsupervised, be well organized, and able to multi-task.
  • Ability to work in a fast paced environment.
  • Ability to troubleshoot and resolve issues in a high-pressure environment.
  • Design and implementation experience with F5 BigIP LTM and GTM appliances and virtual appliances.
  • Excellent understanding of LTM configuration (VIPs, Persistence, SNAT, SSL, etc.).
  • Experience writing and troubleshooting iRules.
  • Ability to troubleshoot connection issues and services on F5 appliances.
  • F5 OS upgrades, backup and restores.
  • Managing F5 appliances in HA configurations.
  • Knowledge of troubleshooting tools, such as: tcpdump, ssldump, openssl, QKView, logs, curl, Wireshark, Fiddler, Postman.
  • Knowledge of http protocol versions, headers, methods, and status codes.
  • Task/project oriented.
  • Strong oral and written communication skills; ability to communicate technical concepts to non-technical Associates.
  • Ability to analyze and troubleshoot network traffic from layer 1 through 7 with utilities including SSH, nslookup, tcpdump, ssldump, cURL, HTTP GET and Open SSL.
  • Ability to effectively articulate the implications and impact that proposed .architectural changes will have on the business (to technical and non-technical audiences).
  • Availability during evenings and weekends for P1 issues and scheduled change controls.
  • Availability to provide 24x7 on-call support as scheduled.
  • Availability for occasional travel to remote offices/data centers.
  • Knowledge of network monitoring solutions.
  • Knowledge of application load balancing strategies and advanced techniques for application delivery
  • Excellent troubleshooting skills and an ability to identify root causes of issues and provide solutions.
  • Ability to team within and outside of the operations group.
  • Strong interpersonal and presentation skills, both verbal and written, with the capability to articulate and educate others about complex technology with business acumen.
Minimum Qualifications:
  • 5 years’ experience with F5 Hardware/Software.
  • F5 Certified Big-IP Administrator (F5-CA).
  • 5 years’ networking experience.
  • Experience designing, implementing, and supporting environments that include two or more of the following: Enterprise Gateway architectures including: Firewalls, Application Proxies, Global and Local load balancing, and/or Enterprise Management tools.
  • Experience working in 24 x 7 centers with complex, high transaction, high availability environments.
  • Experience creating implementation plans, LTM, GTM, and ASM configurations, TMOS code upgrades, and deployment of new load balancing builds for F5 or Kemp load balancing technologies.
  • Experience with F5 Traffic Management Operating system, CLI commands, and Route Domains.
  • Experience creating and maintaining technical documentation.
  • Experience with F5 ASM & APM modules.
  • Experience with requesting and installing PKI server certificates.
  • Experience with configuring PKI Certificate Authority (CA) trust bundles, Certificate Revocation List (CRL) and Online Certificate Revocation List (OCSP).
  • Experience with network design, install, configuration, and troubleshooting.
  • Experience with RIP, OSPF, BGP, MPLS, RSVP, QoS, and STP.
  • Experience with routers, switches, firewalls and load-balancers.
  • Experience with Internet based data transmission.
Preferred Qualifications:
  • Experience working within Federal or Public Regulatory Agency guidelines such as PCI-DSS, FISMA, FedRAMP or HIPAA.
  • Experience with configuration, deployment, and administration of F5 TMOS versions 11.x or higher.
  • F5 Certifications such as: F5-CA, F5-CTS LTM, F5-CTS GTM, or F5-CTS APM.
  • 5 Years Cisco Enterprise Level Network experience.
Lyndrel (Lynn ) Downs
Energy Sourcing  Managing Partner | Director of Recruiting
Fortify Experts  |  Managing Partner | Cyber Security Staffing

C: 832.670.1890 

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