Network Security Engineer

Natilik; Greater London; On-site; GBP 50,000 - 70,000; Full time

Job summary

A technology solutions provider in Greater London is seeking a Firewall Engineer to manage and optimize enterprise firewall environments. Candidates should have over 5 years of experience working with Checkpoint firewalls and strong troubleshooting skills. This mid-senior level role involves operational support and incident response within a collaborative team. Competitive benefits, including flexible working and professional development, are offered to enhance employee satisfaction and work-life balance.

Benefits

25 days annual leave (+ bank holidays)

Quarterly awards and bonuses

Flexible working policy

Private medical insurance

Access to financial wellness support

Cycle to Work scheme

Qualifications

• Minimum 5 years working with Checkpoint firewalls in complex environments.
• Strong skills in troubleshooting firewalls and security policies.
• Ability to handle pressure during major incidents.

Responsibilities

• Manage and support enterprise firewall environments.
• Maintain and optimise firewall policies and performance.
• Support incident response and security event analysis.

Skills

Checkpoint firewalls

Troubleshooting skills

Security monitoring tools

Operating under pressure

Education

CCSA or CCSE Certification

Tools

Palo Alto Networks

Cisco security platforms

Job description

Natilik is a Global Technology Solutions Partner. Our mission continues to be two-fold; growing a brand that is seen as the industry’s ‘Confident Guide’ sat between the vendors who make technology, and our clients who want to use it to help deliver the outcomes most important to them. We offer products, services, platforms, applications, and expertise to help. We also want to continue to build a business that we can be proud of, with a focus on five stakeholders: clients, people, partners, communities, and shareholders; putting our people at the heart of everything we do. From the small and simple, to the large and complex, we want a life‑long partnership, a company our clients and people can rely on.

The Role

Natilik is seeking an experienced Firewall Engineer to join our team in supporting and optimising a variety of complex enterprise firewall estates. This is a mid‑level to senior, hands‑on technical role involving operational support, troubleshooting, incident response, and collaborating with our wider Network Security team.

Key Responsibilities

• Manage, support, and troubleshoot enterprise firewall environments across multi‑site networks.
• Maintain and optimise firewall policies, routing, clustering, and performance.
• Support incident response, monitoring, alerting, and security event analysis.
• Produce clear documentation, reports, and configuration records.
• Contribute to continuous improvement, architecture enhancements, and best practices.

The following skills and experience would make a great fit for our team:

Essential

• 5+ years experiences working on Checkpoint firewalls in large/complex environments (e.g., MDSM, VSX, SmartConsole, Maestro, gateway appliances)
• Strong troubleshooting skills across firewalls, VPNs, security policies, and network connectivity.
• Comfortable operating under pressure during major incidents or high‑urgency situations.
• Familiarity with Security monitoring tools, and operational service processes.
• CCSA or CCSE Certified

Nice to have

• Palo Alto Networks (e.g., NGFW, Prisma Access, Strata Cloud Manager)
• Cisco security platforms (e.g., ASA, Firepower, FTD/FMC)
• Experience/exposure to AlgoSec
• PCNSE OR CCNP Certified

Benefits

Natilik offers a series of benefits and perks designed to support your personal and professional growth, while fostering a thriving and rewarding work environment. We recognise the importance of contributing to our people's well‑being, job satisfaction, and work‑life balance and remain committed to doing so. This is why we offer:

• 25 days annual leave (+ bank holidays) rising with tenure
• Quarterly Awards and Bonuses
• Flexible Working Policy
• Competitive pension scheme
• Access to Financial Wellness support
• Industry‑leading home working and mobility technology
• Private Medical Insurance
• Company shares (available after One year tenure)
• Medicash (Cashback Scheme)
• Retail discounts via Medicash
• Access to EAP scheme for you and your household
• Vehicle lease salary sacrifice scheme (available after One year tenure)
• Cycle to Work Scheme
• Annual paid volunteering day
• Enhanced parental leave
• Access to funding for additional qualifications and courses
• Access to paid study leave