Senior Network Security Engineer IV – UK

WebHosting; United Kingdom; Remote; GBP 48,000 - 62,000; Full time

Job summary

Rackspace is seeking a Senior Network Security Engineer IV for the UK. You will guide customers on complex network security issues, oversee escalations, and drive security configurations across firewalls, load balancers, and cloud-native tooling.

Expect hands-on troubleshooting, documentation, and collaboration with cross-functional teams. The role emphasizes independent ownership, mentoring peers, and contributing to security policy adherence.

Qualifications

• 7+ years of experience in Networking/Network Security.
• Working knowledge of NSX-T, Palo Alto, Cisco FirePower, F5.
• Desirable Fortigate, Azure, Cisco Nexus, Panaroma, ACI, Cloudflare.
• At least one relevant networking certification (e.g., CCNA).
• Proven ability to work independently and guide others.
• May lead projects or project steps within larger initiatives.

Responsibilities

• Configure, troubleshoot, and escalate for Firewalls & Load Balancers, Windows/Linux admin, or Cloud Native Tooling.
• Create documentation for support and operations tasks.
• Configure, plan, install, maintain, and optimize network systems with security policies.
• Resolve engineering issues by owning customer requests to completion.
• Design, schedule and coordinate maintenance activities.
• Engineer and implement customized security solutions.
• Collaborate with Account Managers to build strong customer relationships.
• Share knowledge with other Engineers and Administrators.
• Mentor and train junior Rackers.
• Perform other incidental tasks as needed.

Skills

NSX-T

Palo Alto

Cisco FirePower

F5

Fortigate

Azure

Cisco Nexus

Panaroma

ACI

Cloudflare

CCNA

7+ years experience

Independent working

Project leadership

Tools

iRule (TCL)

Perl scripts

Job description

Senior Network Security Engineer IV – UK

Job Description

TheSenior Network Security Engineer (L4)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 Responsibilities

• Configure, troubleshoot, and take escalations for Firewalls & Load Balancers, Windows/Linux system administration, or Cloud Native Tooling
• Create documentation for support and operations tasks regarding the above tools
• Configure, plan, install, maintain, and optimize network systems, equipment, and applications ensuring network protocols and security policies are used effectively
• Solve engineering problems through the ownership of level appropriate customer requests and issues, seeing them through to resolution
• Design, schedule and coordinate maintenances
• Engineer and implement customized security solutions
• Collaborate with Account Managers and Business Development Consultants to build strong customer relationships
• Collaborate and share knowledge with other Engineers and Administrators
• Mentor and train lower level Rackers
• Other Incidental tasks related to the job, as necessary.

Skills/Knowledge

• Required – 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.
• 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 disciplines
• Solves complex problems
• Works independently, receives minimal guidance
• May lead projects or project steps within a broader project or may have accountability for on-going activities or objectives
• Acts as a resource for colleagues with less experience

#LI-LP2

Our compensation reflects the cost of labor across several geographic markets. The compensation range for this position ranges from £48,101.00/year in our lowest geographic market up to £62,315.00/year in our highest geographic market. Pay is based on a number of factors including market location and may vary depending on job-related knowledge, skills, and experience. The compensation package may also include incentive compensation opportunities in the form of annual bonus or incentives, equity awards and an Employee Stock Purchase Plan (ESPP). Learn more about benefits at Rackspace.