Senior Cyber Security Network Engineer

Sky UK Limited; Greater London; Hybrid; GBP 85,000 - 120,000; Full time

Benefits offered by this job

Free Sky TV/NOW package

Private healthcare with mental health

Pension up to 9%

Aviva Digital GP

Discounts on Sky products

Sharesave and Tech schemes

Sky VIP rewards

Job summary

Sky UK Limited is seeking a Senior Network Security Engineer to design, implement and govern enterprise-scale security across networks, data, and cloud environments. You will monitor threats, investigate incidents, and drive improvements in security posture with advanced tooling and automation.

Role requires hands-on expertise with firewalls, WAFs, VPNs, SIEM/SOAR, and Zero Trust. Hybrid working with in-office presence in Osterley is expected as part of Sky’s campus culture.

Qualifications

• Extensive experience designing, implementing, securing, and supporting enterprise-scale network security.
• Industry certifications such as CISSP or equivalent are highly regarded.
• Strong fundamentals: TCP/IP, routing, switching, DNS, DHCP, and network segmentation.
• Hands-on with security operations, including EDR, vulnerability management, and IAM.

Responsibilities

• Develops cyber security plans addressing current and future threats.
• Monitors network activity for anomalies and unauthorized access.
• Investigates potential breaches and incident indicators.
• Responds to incidents with containment, remediation, and backups.
• Improves processes and mitigations; documents standards and runbooks.
• Implements firewalls, IDS, encryption tools, and related tech.
• Produces detailed security reports for internal and external stakeholders.
• Advises on cyber security at organisation and customer levels.

Skills

Enterprise security

Firewalls & WAFs

NAC & IAM

Security automation

Threat monitoring

Cloud security

SIEM/SOAR

Zero Trust

Scripting (Python/PowerShell)

Communication & docs

Education

CISSP or equivalent

Tools

Palo Alto

Check Point

Fortinet

Cisco

Akamai WAF

F5

Citrix ADC

VPNs

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 srganisation 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

Desirable Criteria:

• Experience with cloud networking and security (AWS, Azure, GCP)

• Experience with Infrastructure as Code (Terraform, Ansible)

• Knowledge of Zero Trust architectures

• Experience with SIEM and SOAR platforms

• Experience supporting large-scale security transformation programmes

Benefits and perks

There's one thing people can't stop talking about when it comes to life at Sky: the perks. Here’s a taster:

• Free Sky TV or NOW package, including Sky Sports and Sky Cinema
• Pension packagewith up to 9% employer contribution
• Private healthcarewith 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 hybrid working expectations for this role are 2 days in the office per week.

Your office base

Osterley

Our Sky Group HQ. Equipped withstate-of-the-arttechnology and workspaces,there’splenty of space to see yourbig ideascome to life. Hereyou’llfind 13 subsidised restaurants and cafes. You can re-energise at our gym, catch the latest films at our cinema, get your car washed and even get pampered at our beauty salon.

Our Osterley Campus is just a 10-minute walk from Syon Lane train station, or you can get one of our free shuttle buses from Osterley,Gunnersburyand Ealing Broadway stations.Plus, there’sfreeonsite parking available for cars,motorbikesand bicycles

Who we are

We’re Sky, a leading media and entertainment company who connect millions with entertainment, sports, news and arts through innovative products and services. Working with us means you’ll be bringing the joy of a better experience to more people, every day. All so we can do better and deliver better for our customers, colleagues and society.

We’re an equal opportunity employer and value diversity at our company. We're a Disability Confident Accredited Employer, and welcome and encourage applications from all candidates.We will look to ensure a fair and consistent experience for all and will make reasonable adjustments to support you where appropriate. Please flag any adjustments you need as early as you can.

Just so you know: if your application is successful, we’ll ask you to complete a criminal record check. And depending on the role you have applied for and the nature of any convictions you may have, we might have to withdraw the offer.

To be eligible for this role you are required to have the appropriate right to work in the UK. Please be aware Sky does not offer sponsorship for this position.

To find out more about working with us, search #LifeAtSky on social media.