86 Network Engineer X2 Cisco Juniper Fortinet F5 London jobs in London

Our client is seeking a highly skilled and experienced Lead Network Security Engineer to join their dynamic technology team in London, England, UK . This crucial role involves designing, implementing, and managing robust network security solutions to protect the organization's critical infrastructure and data assets. You will lead a team of security engineers, providing technical guidance and mentorship, while also taking ownership of key security projects. Responsibilities include developing and enforcing network security policies and procedures, conducting vulnerability assessments and penetration testing, and responding to security incidents. The ideal candidate will have a deep understanding of network protocols, firewalls, intrusion detection/prevention systems, VPNs, and other security technologies. Proven experience in leading security projects, architecting secure network solutions, and managing security operations is essential. Excellent analytical, problem-solving, and communication skills are required, along with the ability to articulate complex security concepts to both technical and non-technical audiences. Certifications such as CISSP, CCIE Security, or equivalent are highly desirable. This hybrid role offers a blend of strategic planning and hands-on technical work, with opportunities for both remote collaboration and on-site team interaction in the heart of London.

Our client, a leading telecommunications provider, is seeking a highly skilled and experienced Senior Network Security Engineer to join their advanced infrastructure team. This is a fully remote position, offering the flexibility to work from anywhere within the UK. You will be responsible for the design, implementation, and maintenance of robust network security solutions to protect the company's critical infrastructure and customer data. This includes firewalls, intrusion detection/prevention systems, VPNs, and security protocols. You will play a key role in identifying and mitigating security threats, responding to incidents, and ensuring compliance with industry security standards and regulations.

Key responsibilities:

• Designing, deploying, and managing network security infrastructure, including firewalls, IDS/IPS, VPNs, and endpoint security solutions.
• Configuring and maintaining network security devices and software.
• Monitoring network traffic for security breaches and suspicious activities.
• Responding to and resolving security incidents in a timely and effective manner.
• Developing and implementing security policies, procedures, and best practices.
• Conducting regular vulnerability assessments and penetration testing.
• Staying up-to-date with the latest cybersecurity threats, trends, and technologies.
• Collaborating with IT operations teams to ensure the security of the overall network architecture.
  

The ideal candidate will hold a Bachelor's degree in Computer Science, Information Technology, or a related field, with a minimum of 7 years of experience in network security engineering. Proven expertise in configuring and managing security hardware and software from leading vendors (e.g., Cisco, Palo Alto Networks, Fortinet) is essential. Strong knowledge of TCP/IP, routing protocols, and network security concepts is required. Certifications such as CISSP, CCIE Security, or GIAC are highly desirable. Excellent analytical, problem-solving, and communication skills are crucial for this role. Experience with cloud security and security automation tools would be a significant advantage. This is an exciting opportunity to contribute to the security of a major telecommunications network from a remote location, serving the London, England, UK area.

WhatJobs is seeking a highly skilled Senior Network Security Engineer to join our growing telecommunications infrastructure team in the heart of **London, England, UK**. This critical role involves the design, implementation, and maintenance of robust network security solutions to protect our vast telecommunications network from evolving cyber threats. You will be responsible for ensuring the confidentiality, integrity, and availability of our network assets, implementing cutting-edge security technologies, and responding to security incidents. The ideal candidate will possess deep technical expertise in network security, a proactive approach to threat mitigation, and excellent analytical skills. You will work closely with network operations, system administration, and development teams to integrate security best practices across all facets of our operations.

Key Responsibilities:

• Design, deploy, and manage advanced network security infrastructure, including firewalls, IDS/IPS, VPNs, and WAFs.
• Develop and implement security policies, procedures, and best practices for network environments.
• Monitor network traffic for security breaches and anomalous activity, conducting thorough investigations.
• Perform regular vulnerability assessments and penetration testing to identify and remediate security weaknesses.
• Respond to and manage security incidents, including containment, eradication, and recovery efforts.
• Configure and maintain security logging and monitoring systems, ensuring comprehensive audit trails.
• Collaborate with engineering teams to ensure new network deployments meet security standards.
• Stay current with the latest cybersecurity threats, trends, and technologies.
• Develop and deliver security awareness training to technical staff.
• Manage security vendors and solutions, evaluating new technologies for potential implementation.
• Contribute to the development and execution of disaster recovery and business continuity plans.
• Provide technical leadership and mentorship to junior security engineers.

Qualifications:

• Bachelor's degree in Computer Science, Information Technology, Cybersecurity, or a related field; relevant certifications (CISSP, CCNA Security, CCNP Security) are highly desirable.
• Minimum of 7 years of experience in network security engineering, with a strong focus on telecommunications environments.
• In-depth knowledge of TCP/IP, routing protocols (BGP, OSPF), and network architecture.
• Hands-on experience with firewalls (Palo Alto, Cisco, Fortinet), IDS/IPS solutions, and VPN technologies.
• Proficiency in scripting languages (e.g., Python, Bash) for automation of security tasks.
• Experience with SIEM platforms (Splunk, QRadar) and security monitoring tools.
• Strong understanding of cybersecurity principles, threat modeling, and incident response methodologies.
• Excellent analytical and problem-solving skills.
• Effective communication and collaboration abilities.
• Experience with cloud security (AWS, Azure) is a significant advantage.

This is a challenging and rewarding opportunity to shape the security posture of a leading telecommunications provider in a dynamic urban setting.

Our client, a rapidly growing telecommunications provider, is seeking a highly skilled Senior Network Security Engineer to join their fully remote technology team. This position is crucial for safeguarding the company's network infrastructure against evolving cyber threats. You will be responsible for the design, implementation, and management of network security solutions, ensuring the integrity, confidentiality, and availability of all network assets. Key responsibilities include configuring and maintaining firewalls, intrusion detection/prevention systems (IDS/IPS), VPNs, and other security appliances. You will conduct regular security assessments, vulnerability scans, and penetration testing to identify and remediate potential weaknesses. Developing and enforcing network security policies and procedures, as well as responding to security incidents, will be a core part of your role. The ideal candidate will possess a strong background in network engineering and cybersecurity, with extensive experience in secure network design and administration. Certifications such as CISSP, CCIE Security, or equivalent are highly desirable. Proven expertise in TCP/IP, routing protocols (BGP, OSPF), and network security technologies (e.g., Palo Alto, Cisco ASA, Fortinet) is essential. You must have excellent analytical and problem-solving skills, with the ability to troubleshoot complex security issues under pressure. Strong communication and collaboration skills are vital for working effectively within a distributed team and communicating technical information to both technical and non-technical stakeholders. This is a fully remote opportunity, requiring self-motivation, excellent time management, and the ability to work autonomously. You will be instrumental in building and maintaining a robust security posture for a leading telecommunications company, with the opportunity to shape security strategies and contribute to innovative solutions. Although the role is remote, it supports operations that may have a physical presence in London, England, UK .

**Do you want your voice heard and your actions to count?**
Discover your opportunity with Mitsubishi UFJ Financial Group (MUFG), one of the world's leading financial groups. Across the globe, we're 120,000 colleagues, striving to make a difference for every client, organization, and community we serve. We stand for our values, building long-term relationships, serving society, and fostering shared and sustainable growth for a better world.
With a vision to be the world's most trusted financial group, it's part of our culture to put people first, listen to new and diverse ideas and collaborate toward greater innovation, speed and agility. This means investing in talent, technologies, and tools that empower you to own your career.
Join MUFG, where being inspired is expected and making a meaningful impact is rewarded.
Network Systems Support Engineer is responsible for supporting the MUFG EMEA data network and all other aspects of networking including firewall and Network infrastructure.
**KEY RESPONSIBILITIES**
Incident Management
Take ownership of network related incidents and troubleshoot from first alert to resolution, to have good customer facing skills when liaising with users, to co-operate with other team members and other internal teams, to liaise and take charge of vendors for incident resolution.
Administration
Maintaining and where necessary creating a full set of comprehensive network data diagrams and documentation.
Project Support
To conduct project activities to specific time lines and to deliver network data project tasks and objectives assigned to the team.
**SKILLS AND EXPERIENCE**
Good understanding of ISO layers IP addressing and Subnetting
System Operation and Maintenance
Layer 3 Path Control, IPv4 redistribution, EIGRP based solutions
OSPF based solutions, BGP based solutions, Layer 2 switching
Cisco NX-OS, IOS
Cisco ACI
Cisco ISE
Cisco Meraki
VLAN's, High availability
Multicast
Firewalls; Palo Alto, CheckPoint and Cisco ASA
F5 BigIP
Tetration
Maintaining and monitoring network performance
Troubleshooting a multi-protocol system network
Managing Cisco routing and switching
Network security
Administration
Maintaining and where necessary creating a full set of comprehensive network data diagrams and documentation.
Project Support
To conduct project activities to specific time lines and to deliver network data project tasks and objectives assigned to the team.
Team Duties
Assist with the support and maintenance of the all NSS duties including data, security and infrastructure
Work as per shift planned by MUFG to cover support and project delivery for after office hours on call and weekend working if required.
+ Normal office hours Monday - Friday
+ Participation in a shift pattern to cover support and project delivery (2 in 6 shifts).
+ Early shift starts at 7:00 am; late shift cover ends at 6 pm.
+ Occasional bank holiday working as per business requirements.
+ Weekend working as per business requirements
**PERSONAL REQUIREMENTS**
+ Excellent communication and interpersonal skills
+ Ability to handle pressure during outages and systematically resolve issues
+ Excellent problem-solving skills
+ Results driven, with a strong sense of accountability
+ A proactive, motivated approach
+ The ability to operate with urgency and prioritise work accordingly
+ A structured and logical approach to work
+ Attention to detail and accuracy
+ Ability to perform well in a pressurised environment
+ Ability to manage constructive conflict effectively
+ The ability to manage large workloads and tight deadlines
+ Able to communicate complex technical concepts to non-technical persons at all levels
We are open to considering flexible working requests in line with organisational requirements.
MUFG is committed to embracing diversity and building an inclusive culture where all employees are valued, respected and their opinions count. We support the principles of equality, diversity and inclusion in recruitment and employment, and oppose all forms of discrimination on the grounds of age, sex, gender, sexual orientation, disability, pregnancy and maternity, race, gender reassignment, religion or belief and marriage or civil partnership.
We make our recruitment decisions in a non-discriminatory manner in accordance with our commitment to identifying the right skills for the right role and our obligations under the law.
At MUFG, our colleagues are our greatest assets. Our Culture Principles provide a roadmap for how each of our colleagues must think and act to become more client-obsessed, inclusive and innovative. They reflect who we are, who we want to be and what we expect from one another. We are excited to see you take the next step in exploring a career with us and encourage you to spend more time reviewing them!
**Our Culture Principles**
+ Client Centric
+ People Focused
+ Listen Up. Speak Up.
+ Innovate & Simplify
+ Own & Execute

• Network Engineer
• Redhill, Surrey (On-site x5 days a week)
• Must be eligible for DV Clearance
• Up to c50,000 per year
• 25 days holiday plus Bank Holidays, Bonuses, Pension, Life Insurance, Medical Insurance, etc.

The Opportunity:

In this newly created role you will participate and support all internal IT and Engineering teams, taking responsibility for the through life maintenance and support of both internal and customer networks as required by the company, providing advice and expertise on the design and management of internal and customer networks.

You will participate as required in the build, test and commissioning of such networks and help support and maintain the integrity of network security for internal and external customer networks.

Skills and Experience:

• A minimum of FCSS/FCP and/or a CCNA/CCNP or equivalent qualification
• A minimum of 5 years multi-network exposure including hands on experience of designing and managing networks including at least some of the following systems: Fortinet Fortigate Firewalls (FortiManager, FortiAnalyzer), Cisco Routers (29xx, 83xx,4xxx, IOS-XE), Cisco Switches (29xx, 93xx),Crypto, VPN, IP SLA, BGP,OSPF, IPSEC, VOIP QoS, etc.
• 3rd line support of all network issues
• Ability to absorb and quickly gain and retain knowledge of my clients bespoke products and satellite services
• Excellent customer support skills and ability to interact with customers both on the phone and in meetings
• A well organized, pro-active and can-do attitude, taking ownership of issues relating to the networks, their integrity and managing and completing tasks

NB: Candidates must hold, or have the ability to easily achieve DV Security Clearance.

Please contact John here at ISR to learn more about our client and their ongoing expansion plans and the new role working as a Network Engineer based in Surrey?

Position: Network Engineer
Job ID: 2394/8
Location: Surrey 
Rate/Salary: £40,000 - £50,000 
Benefits: On-site gym at the HQ, 25 days holiday plus BH, Hybrid working after 6 months probation
Type: Permanent 

HSB Technical Ltd is a specialist recruiter within the Power & Propulsion, Shipbuilding, Maritime Shipping, Energy and Subsea sectors – visit: (url removed) for a list of our vacancies. We have a number of permanent and contract vacancies for multiple businesses across the UK and overseas.

The job description below will outline this position: Network Engineer

Typically, this person will be responsible for the design, build, maintenance, and support of secure networks for both internal teams and external customers. The role covers the full lifecycle of network management, from design through to commissioning and long-term support, while ensuring security, reliability, and performance standards are met.

HSB Technical’s client is an established and well-regarded business entity.

Duties and responsibilities of the Network Engineer:

• Act as a subject matter expert for network design, management, and security.             
li>Lead the design, build, test, and commissioning of internal and occasional customer networks.             
• Su port, troubleshoot, and maintain complex network environments including Fortinet firewalls, Cisco routers/switches, VPNs, and VoIP QoS.            
• A alyse logs, identify trends, and recommend network improvements.              
• Ma ntain and update documentation, including configurations, schematics, and support guides.  
li>Provide 3rd line support for escalated network issues, often to tight deadlines.           
• L aise with internal teams and external stakeholders to ensure network integrity and service availability.
• Participate in on-call and out-of-hours support rota as required.

Qualifications and requirements for the Network Engineer:

• Professional networking certifications such as FCSS/FCP and/or CCNA/CCNP (or equivalent).             
• Mi imum 5 years’ hands-on experience designing and managing networks.            
• Str ng technical knowledge of Fortinet FortiGate Firewalls, Cisco Routers/Switches, VPN, BGP, OSPF, IPSec, and VoIP QoS.             
• Ab lity to obtain or hold DV Security Clearance.
• Strong organisational skills, proactive approach, and attention to detail.
• Excellent communication skills and the ability to support and train others.
• Desirable: experience with satcom, maritime communications, MPLS, 802.1x, multicast, Linux, Docker, and Python.

This vacancy is being advertised by HSB Technical Ltd, who have been appointed to act as a recruitment partner for this role.
 

Position: Network Engineer
Job ID: 2394/8
Location: Surrey 
Rate/Salary: £40,000 - £50,000 
Benefits: On-site gym at the HQ, 25 days holiday plus BH, Hybrid working after 6 months probation
Type: Permanent 

HSB Technical Ltd is a specialist recruiter within the Power & Propulsion, Shipbuilding, Maritime Shipping, Energy and Subsea sectors – visit: (url removed) for a list of our vacancies. We have a number of permanent and contract vacancies for multiple businesses across the UK and overseas.

The job description below will outline this position: Network Engineer

Typically, this person will be responsible for the design, build, maintenance, and support of secure networks for both internal teams and external customers. The role covers the full lifecycle of network management, from design through to commissioning and long-term support, while ensuring security, reliability, and performance standards are met.

HSB Technical’s client is an established and well-regarded business entity.

Duties and responsibilities of the Network Engineer:

• Act as a subject matter expert for network design, management, and security.             
li>Lead the design, build, test, and commissioning of internal and occasional customer networks.             
• Su port, troubleshoot, and maintain complex network environments including Fortinet firewalls, Cisco routers/switches, VPNs, and VoIP QoS.            
• A alyse logs, identify trends, and recommend network improvements.              
• Ma ntain and update documentation, including configurations, schematics, and support guides.  
li>Provide 3rd line support for escalated network issues, often to tight deadlines.           
• L aise with internal teams and external stakeholders to ensure network integrity and service availability.
• Participate in on-call and out-of-hours support rota as required.

Qualifications and requirements for the Network Engineer:

• Professional networking certifications such as FCSS/FCP and/or CCNA/CCNP (or equivalent).             
• Mi imum 5 years’ hands-on experience designing and managing networks.            
• Str ng technical knowledge of Fortinet FortiGate Firewalls, Cisco Routers/Switches, VPN, BGP, OSPF, IPSec, and VoIP QoS.             
• Ab lity to obtain or hold DV Security Clearance.
• Strong organisational skills, proactive approach, and attention to detail.
• Excellent communication skills and the ability to support and train others.
• Desirable: experience with satcom, maritime communications, MPLS, 802.1x, multicast, Linux, Docker, and Python.

This vacancy is being advertised by HSB Technical Ltd, who have been appointed to act as a recruitment partner for this role.
 

• Network Engineer
• Redhill, Surrey (On-site x5 days a week)
• Must be eligible for DV Clearance
• Up to c50,000 per year
• 25 days holiday plus Bank Holidays, Bonuses, Pension, Life Insurance, Medical Insurance, etc.

The Opportunity:

In this newly created role you will participate and support all internal IT and Engineering teams, taking responsibility for the through life maintenance and support of both internal and customer networks as required by the company, providing advice and expertise on the design and management of internal and customer networks.

You will participate as required in the build, test and commissioning of such networks and help support and maintain the integrity of network security for internal and external customer networks.

Skills and Experience:

• A minimum of FCSS/FCP and/or a CCNA/CCNP or equivalent qualification
• A minimum of 5 years multi-network exposure including hands on experience of designing and managing networks including at least some of the following systems: Fortinet Fortigate Firewalls (FortiManager, FortiAnalyzer), Cisco Routers (29xx, 83xx,4xxx, IOS-XE), Cisco Switches (29xx, 93xx),Crypto, VPN, IP SLA, BGP,OSPF, IPSEC, VOIP QoS, etc.
• 3rd line support of all network issues
• Ability to absorb and quickly gain and retain knowledge of my clients bespoke products and satellite services
• Excellent customer support skills and ability to interact with customers both on the phone and in meetings
• A well organized, pro-active and can-do attitude, taking ownership of issues relating to the networks, their integrity and managing and completing tasks

NB: Candidates must hold, or have the ability to easily achieve DV Security Clearance.

Please contact John here at ISR to learn more about our client and their ongoing expansion plans and the new role working as a Network Engineer based in Surrey?