Network Security Engineer - Firewalls
Network Security Engineer - Firewalls

Network Security Engineer - Firewalls

City of London Full-Time 48000 - 72000 £ / year (est.) Home office (partial)
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At a Glance

  • Tasks: Design and document security solutions for client networks, ensuring smooth traffic flows.
  • Company: CACI Ltd is a leading provider of managed services in the UK, focusing on network security.
  • Benefits: Enjoy flexible working, comprehensive training, and a range of health and wellness benefits.
  • Why this job: Join a dynamic team where your career progression is in your hands and collaboration thrives.
  • Qualifications: 10+ years in networking with strong security focus; CCNP level experience required.
  • Other info: Diversity is celebrated here; all qualified applicants are encouraged to apply.

The predicted salary is between 48000 - 72000 £ per year.

A Senior Network Security Engineer is required to join our Managed Service, responsible for Firewall Solution Design on our client's network infrastructure in the UK.

As a Senior Network Security Engineer within the team you will be responsible for designing and documenting security solutions across multiple networks to ensure end to end traffic flows as per client requirements. The Senior Network Security Engineer will be heavily focused on client needs and on delivering tailored solutions across the client's estate. The Engineer should have at least 10 years' experience in a Networking role with a strong focus on security. The scope of the primary task of this role is to work alongside the client's Network Security Architect in developing security solutions.

Main Duties and Responsibilities

  • Troubleshooting: Manage and troubleshoot issues that arise on the network and resolve issues reported by other IT groups. The candidate must be dynamic and able to work under pressure to resolve incidents and outages in a complex network environment across many different network technology areas.
  • Operational Projects: Assist with projects to enhance Operations within the organisation. The candidate must be flexible and able to manage their time efficiently and effectively between operational functions and project work.

Skills:

  • Excellent communications
  • Experience in a similar role
  • CCNP level at a minimum is required.
  • Good knowledge of routing and switching.
  • Strong Firewall Experience
  • Ability to work in a fast-paced and demanding environment.
  • Good stakeholder engagement skills with a strong customer service mindset.
  • Good time management skills to manage and action business as usual operational tasks as well as execute and deliver operational projects
  • Well-developed problem-solving skills, with the ability to assimilate data rapidly in order to present solutions effectively.
  • Flexibility and agility to adapt to changing requirements

Desirable but not essential:

  • Knowledge of Nexus
  • Knowledge of F5 (LTM)

Progression:

We understand that your career progression is important to you. At CACI, people get promoted on merit, when they are ready. This means that your career is completely in your own hands and there is never a ceiling for your progress.

Flexibility:

The key to our success is our teamwork and collaboration and that tends to work best when we are all in the office working together. That said, we fully appreciate that everyone leads busy lives, and we can't always be in the office. This is why we embrace flexible working.

Development:

Your development is key and is a top priority for the team. We offer 3 types of training: externally run consulting courses, externally run bespoke courses, and internal courses. Everyone has different training requirements which means everyone has their own training plan.

We have a range of benefits on offer to support you. We have a comprehensive list of schemes ranging from pension plans to health and wellness policies, in addition to a selection of flexible benefits to meet your personal needs. We are committed to creating a diverse environment and are proud to be an equal-opportunity employer. All qualified applicants will receive consideration for employment without regard to race, colour, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. Successful candidates must have the right to work in the UK.

Network Security Engineer - Firewalls employer: CACI Ltd

CACI Ltd is an exceptional employer located in the heart of London, offering a dynamic work environment that prioritises teamwork and collaboration. With a strong focus on employee development, we provide tailored training plans and flexible working arrangements to support your career progression. Our commitment to diversity and a comprehensive benefits package ensures that every team member feels valued and empowered to thrive in their role.
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Contact Detail:

CACI Ltd Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Network Security Engineer - Firewalls

✨Tip Number 1

Familiarise yourself with the specific firewall technologies mentioned in the job description, such as F5 and Nexus. Having hands-on experience or relevant certifications in these areas can set you apart from other candidates.

✨Tip Number 2

Network with professionals in the field of network security, especially those who work with CACI or similar companies. Attend industry events or join online forums to gain insights and potentially get referrals.

✨Tip Number 3

Demonstrate your problem-solving skills by preparing examples of past experiences where you successfully managed network issues under pressure. Be ready to discuss these scenarios during interviews to showcase your capabilities.

✨Tip Number 4

Research CACI's company culture and values, particularly their emphasis on teamwork and flexibility. Tailor your approach to align with their ethos, showing that you are not only a technical fit but also a cultural one.

We think you need these skills to ace Network Security Engineer - Firewalls

Network Security Design
Firewall Configuration and Management
Troubleshooting Network Issues
Routing and Switching Knowledge
CCNP Certification
Stakeholder Engagement
Customer Service Mindset
Time Management
Problem-Solving Skills
Adaptability to Changing Requirements
Experience with Nexus (Desirable)
Experience with F5 (LTM) (Desirable)
Excellent Communication Skills
Ability to Work Under Pressure

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights your relevant experience in network security, particularly with firewalls. Emphasise your 10 years of experience and any specific projects that showcase your skills in troubleshooting and solution design.

Craft a Strong Cover Letter: Write a cover letter that addresses the specific requirements mentioned in the job description. Discuss your experience with client engagement and how you can deliver tailored solutions, as well as your ability to work under pressure.

Showcase Relevant Skills: In your application, clearly outline your technical skills such as CCNP certification, knowledge of routing and switching, and strong firewall experience. Mention any familiarity with Nexus or F5 if applicable.

Highlight Problem-Solving Abilities: Provide examples in your application that demonstrate your problem-solving skills and your ability to manage multiple tasks effectively. This will show that you can thrive in a fast-paced environment as required by the role.

How to prepare for a job interview at CACI Ltd

✨Showcase Your Technical Expertise

Be prepared to discuss your experience with firewalls and network security in detail. Highlight specific projects where you designed or implemented security solutions, and be ready to explain the challenges you faced and how you overcame them.

✨Demonstrate Problem-Solving Skills

Since troubleshooting is a key part of the role, think of examples where you've successfully resolved complex network issues. Use the STAR method (Situation, Task, Action, Result) to structure your answers and clearly illustrate your problem-solving process.

✨Emphasise Communication and Stakeholder Engagement

As the role requires good stakeholder engagement skills, prepare to discuss how you've effectively communicated technical information to non-technical stakeholders. Share examples of how you’ve tailored your communication style to meet client needs.

✨Be Ready for Scenario-Based Questions

Expect scenario-based questions that assess your ability to handle real-world situations. Practice articulating your thought process when faced with sudden network outages or security breaches, demonstrating your ability to stay calm under pressure.

Network Security Engineer - Firewalls
CACI Ltd
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  • Network Security Engineer - Firewalls

    City of London
    Full-Time
    48000 - 72000 £ / year (est.)

    Application deadline: 2027-06-25

  • C

    CACI Ltd

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