Network Security Engineer III

The Senior Network Security Engineer (L3) is a crucial element within the Rackspace support infrastructure and is expected to provide an expert level of technical guidance to our customers via the phone, ticketing system, and automation. This role owns complex customer issues which may take several days or weeks to resolve and keeps our customers updated through every step of the process.You will be expected to take initiative and advise on potential pitfalls that a customer may encounter and suggest alternatives through automation, which may better serve the stability and security of the customer's solution. Technical issues can include troubleshooting customer network environments including firewall configurations, VPN technologies and access-control lists, VIP configurations, TCL (iRule) and Perl scripts, layer 4 thru 7 issues, etc.This role will support many elements of the Rackspace Cloud product portfolio, including RackConnect. You will create and maintain customer loyalty by providing Fanatical Experiences above and beyond customer expectations. You will also be responsible for adhering to company security policies and procedures and any other relevant policies and standards as directed.Key ResponsibilitiesConfigure, troubleshoot, and take escalations for Firewalls & Load Balancers, Windows/Linux system administration, or Cloud Native ToolingCreate documentation for support and operations tasks regarding the above toolsConfigure, plan, install, maintain, and optimize network systems, equipment, and applications ensuring network protocols and security policies are used effectivelySolve engineering problems through the ownership of level appropriate customer requests and issues, seeing them through to resolutionDesign, schedule and coordinate maintenancesEngineer and implement customized security solutionsCollaborate with Account Managers and Business Development Consultants to build strong customer relationshipsCollaborate and share knowledge with other Engineers and AdministratorsMentor and train lower level RackersOther Incidental tasks related to the job, as necessary.Skills/KnowledgeRequired - working knowledge of NSX-T, Palo Alto, Cisco FirePower, F5.Desirable - working knowledge of Fortigate, Azure, Cisco Nexus, Panaroma, ACI, Cloudflare.At least ONE relevant networking certification e.g. CCNA/P.Excellence: Exceeds expectations by consistently demonstrating accountability, discipline, high performance, and a proven track record of exceptional results.Customer-driven: Prioritizes customer needs and satisfaction through collaborative and proactive problem-solving, and an unwavering commitment to customer success.Expertise: Possesses deep understanding of customer needs and continually grows and enhances skills to provide customer-focused solutions.Agility: Quickly adapts and responds to dynamic customer needs and expectations through innovative solutions.Compassion: Cultivates a positive and supportive environment to effectively work together towards a common goal, fostering trust within Rackspace and with external stakeholders.Proven experience (7+ years) in Networking/Network Security.Requires in-depth conceptual and practical knowledge in own job discipline and basic knowledge of related job disciplinesSolves complex problemsWorks independently, receives minimal guidanceMay lead projects or project steps within a broader project or may have accountability for on-going activities or objectivesActs as a resource for colleagues with less experienceAbout Rackspace TechnologyWe are the multicloud solutions experts. We combine our expertise with the world's leading technologies - across applications, data and security - to deliver end-to-end solutions. We have a proven record of advising customers based on their business challenges, designing solutions that scale, building and managing those solutions, and optimizing returns into the future. Named a best place to work, year after year according to Fortune, Forbes and Glassdoor, we attract and develop world-class talent. Join us on our mission to embrace technology, empower customers and deliver the future.More on Rackspace TechnologyThough we're all different, Rackers thrive through our connection to a central goal: to be a valued member of a winning team on an inspiring mission. We bring our whole selves to work every day. And we embrace the notion that unique perspectives fuel innovation and enable us to best serve our customers and communities around the globe. We welcome you to apply today and want you to know that we are committed to offering equal employment opportunity without regard to age, color, disability, gender reassignment or identity or expression, genetic information, marital or civil partner status, pregnancy or maternity status, military or veteran status, nationality, ethnic or national origin, race, religion or belief, sexual orientation, or any legally protected characteristic. If you have a disability or special need that requires accommodation, please let us know., Senior Network Infrastructure Engineer - Defence Programme Location: Caerphilly (with travel to client / Ministry of Defence sites as required)Clearance: SC (must hold or be eligible); DV highly desirableSalary: 75,000 + Bonus + Comprehensive Benefits PackageAbout the..., A leading IT recruitment agency is seeking a Senior Network Infrastructure Engineer to work on a major Defence programme in Caerphilly, Wales. 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This role includes responsibilities like troubleshooting firewall configurations, network security, and engineering custom..., Location: Caerphilly (with travel to client / Ministry of Defence sites as required)Clearance: SC (must hold or be eligible); DV highly desirableSalary: 75,000 + Bonus + Comprehensive Benefits PackageAbout the Role A major Defence programme is seeking a highly skilled..., A leading recruitment agency is looking for a Senior Network Infrastructure Engineer to oversee the design, implementation, and support of secure, resilient networks for a major Defence programme. The position is based in Caerphilly with travel to client sites as necessary.... © 2026, Jobsora.com

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