Senior Cyber Security Network Engineer

sky; Hounslow; Hybrid; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Free Sky TV or NOW package

Pension package with up to 9% employer

Private healthcare with mental health

Aviva Digital GP and dental insurance

Discounts on Sky products

Sharesave and Tech schemes

Sky VIP rewards and experiences

Job summary

Sky is seeking a Senior Network Security Engineer to design, implement and monitor enterprise-scale security across our networks. You will lead incident response, threat intelligence, and security automation while shaping policies and best practices.

Key responsibilities include monitoring for attacks, investigating breaches, and deploying firewalls, IDS, and encryption tools. Strong collaboration with teams and stakeholders is essential to success.

Qualifications

• Extensive experience designing, implementing and supporting enterprise-scale network security solutions.
• Proven ability to automate security operations and optimise workflows.
• Strong knowledge of modern threat intel, incident response and risk mitigation.

Responsibilities

• Develops comprehensive cyber security plans addressing current threats and future risks.
• Monitors network activity for suspicious behavior and unauthorised access attempts.
• Investigates potential breaches and anomalies detected by monitoring systems.
• Responds quickly to incidents by isolating systems or restoring backups as needed.
• Analyses security processes to identify improvements and mitigations.
• Implements firewalls, IDS, encryption tools and other protections to raise defence levels.
• Produces detailed reports on incidents and recommendations for changes.
• Provides technical advice on cyber security to internal teams and external partners.
• Keeps up-to-date with trends and ensures regulatory compliance.

Skills

Network security design

Incident response

Threat intelligence

Automation scripting

Zero Trust

Cloud networking security

Stakeholder management

Documentation

Education

CISSP

OSCP

GIAC/SANS

CCNP Security

CCIE Security

Tools

Palo Alto

Check Point

Fortinet

Cisco

Akamai WAF

F5

Citrix ADC

VPNs

NAC

Terraform

Ansible

PowerShell

Python

Shell scripting

SIEM

SOAR

EDR

AWS

Azure

GCP

Job description

We don't just believe in better. We make it happen.

Better content. Better products. And better careers.

Working in Tech, Product or Data at Sky is about building the next and the new. From broadband to broadcast, streaming to mobile, Sky Stream to Sky Glass, we never stand still. We optimise and innovate. We turn big ideas into the products, content and services millions of people love. And we do it all right here at Sky.

Role/Team overview

The Senior Network Security Engineer will be responsible for developing and implementing security strategies to protect the Organisation's data, systems, and networks. This includes monitoring network activity, identifying potential threats, responding to incidents, and ensuring compliance with applicable laws and regulations. The Senior Analyst will also provide guidance on best practices in cyber security as well as develop policies and procedures related to information security.

What you'll do

• Develops comprehensive cyber security plans that address current threats while anticipating future ones.
• Monitors network activity for suspicious behaviour or unauthorised access attempts.
• Investigates any potential breaches of system integrity or other anomalies detected by the monitoring system.
• Responds quickly to any identified incidents or threats by taking appropriate action such as isolating affected systems from the rest of the network or restoring backups when necessary.
• Analyses existing processes and procedures related to information security in order to identify areas of improvement or risk mitigation opportunities.
• Implements new technologies such as firewalls, intrusion detection systems (IDS), encryption tools etc., in order to improve overall system protection levels against malicious attacks/intrusions/breaches etc..
• Creates detailed reports on all activities related to cyber security including incident response actions taken and recommendations for further improvements/mitigations etc..
• Provides technical advice on cyber security issues both internally within the Organisation as well as externally with customers/partners etc..
• Stays up-to-date with latest developments in technology trends and industry standards related to cyber security and ensure compliance accordingly.

What you'll bring

Essential criteria:

• Extensive experience designing, implementing, securing, and supportingenterprise-scale network security solutions, including firewalls (Palo Alto, Check Point, Fortinet, Cisco), WAFs (e.g., Akamai), load balancers (F5, Citrix ADC), VPNs, NAC solutions, routers, and switches within complex enterprise environments.
• Manage Network Access Control solutions, create authentication and authorisation rules for workstations and corporate devices, update endpoint posture policies and manage guest access. Investigate connectivity issues, and assist with network access incidents.
• Strong networking and infrastructure security expertise, including TCP/IPfundamentals, routing and switching, DNS, DHCP, NTP, VLANs, network segmentation, NAT, proxy technologies, packet analysis, network troubleshooting,and operating system security hardening for Windows, Linux, and network devices,including vulnerability remediation.
• Hands-on experience with cyber security operations and technologies,including security monitoring, logging, alerting, threat detection, incident investigation, EDR, anti-malware/antivirus platforms, vulnerability management,encryption, cryptographic controls, and threat intelligence tools.
• Proven ability to automate and optimise security operations using scripting and infrastructure automation tools such as Python, PowerShell, Shell scripting,Terraform, Ansible, or equivalent technologies.
• Demonstrable experience troubleshooting complex network and security incidents in large-scale enterprise environments, including supporting live operational incidents, security transformation initiatives, SIEM/SOAR platforms, cloud networking and security (AWS, Azure, GCP), and Zero Trust architectures.
• Excellent communication, documentation, and stakeholder management skills, with the ability to produce high-quality technical documentation (designs, standards, runbooks, procedures), work effectively across cross-functional teams, and hold relevant industry-recognised certifications such as CISSP, OSCP, GIAC/SANS, CCNP Security, CCIE Security, or equivalent.to shape this

Benefits and perks

• Free Sky TV or NOW package, including Sky Sports and Sky Cinema
• Pension package with up to 9% employer contribution
• Private healthcare with mental health support
• Aviva Digital GP and dental insurance
• Discounts on Sky products, including Sky Mobile, Sky Broadband, Sky Glass and Sky Protect
• Sharesave and Tech schemes
• A range of Sky VIP rewards and experiences

How you'll work

We've adopted a hybrid working approach to give more flexibility on where and how we work. The hybr