1 to 25 of 30 Permanent Network Security Engineer Jobs in the UK

N etworking Security Engineer To £70k + Benefits + Training + Supportive Culture Based: Manchester Who's it for We are proud to be partnering with a leading tech employer with headquarters in Manchester. A business driven by both technology and great service, they now require a network security engineer to help support and develop … their internal IT network security capability. Employing over 500 IT staff they offer an amazing career opportunity, coupled with an award winning culture, brilliant training and support across all your certification pathways. The role The network security engineer will be a highly skilled individual aimed at designing, maintaining, and improving the overall network security … primarily). You will implement policies and procedures to aid other engineers to maintain secure delivery of support issues and projects. This is a hands-on role that delivers network security to a level that can deflect most if not all attacks aimed at the network infrastructure. This role reports directly into a Senior Networking Operations Manager More ❯

Security Engineer, Network Security, Basingstoke, COR7186 This is an excellent opportunity for an ambitious and technical Security Engineer, to join a growing, award winning company, at their head offices in Basingstoke. The successful Security Engineer will be required to have a full-UK driving license as this role will involve ad hoc … travel to other sites/data centres. The Role The Security Engineer will be joining the internal security team, working alongside an external SOC, in-order to support the business on all internal network security issues that arise. You will be an enthusiastic individual with a passion for all things security, with an eagerness … to learn and develop. Outside of this, you will ideally have a broad range of skills with regard to network troubleshooting, firewalls, IDS/IPS, VPNs and more. The Company The Security Engineer will be joining a well-established Managed Service Provider with ambition and a clear plan for growth. Vendor-neutral, their commitment to quality has More ❯

Job Overview: As a Network Security Engineering team member, the Senior Network Security Engineer will specialise in firewalls and routing. The ideal candidate is a flexible, self-motivated individual who excels at multitasking and thrives in a fast-paced, challenging environment. This self-starter will bring ingenuity and expertise to design, implement, and maintain secure … scalable, high-performing network solutions that connect on-premises and public cloud environments. The role emphasizes driving automation through Infrastructure-as-Code (IaC) and GitOps methodologies, ensuring optimal network performance, and integrating robust security measures. Responsibilities: Network Design and Implementation: Design and implement secure, scalable, and high-performing network solutions bridging on-premises and public … cloud environments. Leverage routing and switching expertise (e.g., BGP, OSPF, MPLS) to ensure network performance and reliability across diverse environments. Analyze operational needs and proactively develop creative network solutions to address security challenges. Security and Firewall Management: Manage firewall configurations for the CyberEnergianetwork based on operational requirements. Develop and implement network security tools, produce More ❯

Network Security Engineer Location: Basingstoke (Hybrid - 2-3 days on-site per week) Salary: Up to £60,000 + 10% bonus 83zero are proud to be working with a leading global organisation, headquartered in Basingstoke, who are on the lookout for a Network Security Engineer to join their Central IT division. This business operates … within a secure and highly regulated environment and are looking for a technically skilled professional to help maintain and enhance their critical network infrastructure. As a Network Security Engineer , you'll play a vital role in the build, support, and evolution of complex networking systems, ensuring resilience, security, and performance across their production, pre-production … and development environments. You'll work closely with the Infrastructure and Security teams to both proactively manage the network and support ongoing security initiatives. Key Responsibilities: Provide technical support and network configuration across LAN, WAN, WLAN, VPN, firewalls, and intrusion prevention systems Maintain and support Cisco, HP, and Check Point hardware/software Respond to service More ❯

What You'll Be Working On: ️ Designing, implementing, and managing network security architectures to protect against cyber threats ️ Monitoring network traffic, identifying potential vulnerabilities, and mitigating security risks ️ Configuring and maintaining firewalls, VPNs, intrusion detection/prevention systems (IDS/IPS), and other security devices ️ Conducting regular security audits and vulnerability assessments on network infrastructure ️ Collaborating with IT and security teams to develop and enforce security policies and procedures ️ Responding to and investigating network security incidents, including identifying root causes and implementing corrective actions ️ Staying up to date with the latest network security trends, threats, and technologies ️ Providing guidance and training to teams on best practices for … network security ️ Ensuring compliance with industry standards and regulations (e.g., GDPR, ISO 27001, NIST) What We're Looking For: ️ Proven experience as a Network Security Engineer or in a similar role focused on network security ️ Strong knowledge of network security protocols, firewalls, VPNs, IDS/IPS, and encryption technologies ️ Experience with More ❯

and resilient technology solutions. Our team builds and maintains robust infrastructure that safeguards OpenAI's data and systems while ensuring employees are well-equipped and seamlessly connected. By prioritizing security, reliability, and user-centric solutions, we empower OpenAI employees to drive impactful AI research, corporate operations, and product innovation. About the Role As a Network Security Engineer at OpenAI, you will play a critical role in architecting and maintaining both campus and cloud network infrastructure. You will design and implement secure, scalable, and high-performing network solutions that bridge on-premises environments with public cloud environments. Your expertise in routing and switching will ensure optimal network performance and reliability across diverse environments. You … will drive automation initiatives through Infrastructure-as-Code (IaC) and GitOps methodologies, streamlining network provisioning, enforcing configuration consistency, and optimizing IT workflows. Your responsibilities will also include developing CI/CD pipelines tailored for IT infrastructure, enhancing deployment efficiency, and integrating robust network security measures. You will establish comprehensive observability and proactive issue resolution strategies. We are More ❯

A leading independent logistics provider is seeking a Network Security Engineer with expertise in Cisco DNA and Cisco Firepower to join its team. This role is 80% focused on network security, encompassing both project work and business-as-usual (BAU) operations to maintain a secure and efficient network infrastructure. Hybrid work model - work from … home with 2 days per month in Dartford. Ready to take on a key role in securing a dynamic network environment? Apply now and be part of a team driving innovation in logistics technology! Responsibilities Deploy, maintain, and optimize network and security platforms, including routers, switches, firewalls, IDS/IPS, and cloud technologies. Manage Cisco-based network security, including firewalls, VPNs, and NAC. Monitor network traffic, troubleshoot issues, and improve efficiency. Implement and manage secure remote access and VPN solutions. Oversee PKI management, certificate issuance, and revocation. Recommend and deploy network/security enhancements. Develop technical specifications, rollout plans, and provide BAU support. Collaborate with IT and cybersecurity teams and work with More ❯

Job Title: Network Security Engineer Job Description As a Network Security Engineer, you will leverage Low-Level Design (LLD) and other project materials to prepare, deploy, test, and fix deliverables. These include technologies and services such as firewall devices and configurations, F5 technologies including proxy and load balancer, authentication and encryption mechanisms, access management … to operational processes and controls, including communication and monitoring awareness. Adhere to standards for all build and configuration activities, maintaining appropriate structure, scope, and naming conventions. Support installation of security network devices into racks or cabinets, install the base image, connect to OoBM systems, and liaise with field engineers to ensure compliance with standards. Assist in testing activities … triage, and remediation related to network functionality and performance. Collaborate with the project manager to prioritise, schedule, execute, and report the progress of work. Essential Skills Proficiency in managing firewall devices and configurations, particularly Cisco and Checkpoint. Experience with F5 technologies, including proxy and load balancer. Strong knowledge of network security principles. Ability to manage load balancers More ❯

Network and Security Engineer Job Description When you join our Engineering Team at Telent, you'll be empowered to innovate and drive common solutions, working closely with technical experts who are proud of the impact their work makes. Come join a high-performing team doing complex and critical work. Help build and keep the nation's critical … infrastructure connected and protected 24/7. As a Network and Security Engineer reporting to the Head of Infrastructure Operations, you’ll play a pivotal role in our ongoing digital transformation. You’ll help design, implement, and support the systems that power Telent’s ICT estate - working on cutting-edge technologies in a role that blends strategy … working role, with a requirement to be in our Warwick HQ 1-2 days per week, as well as ad-hoc travel on occasion. What You’ll Do: Lead network design and architecture for Telent’s Corporate Enterprise network - producing, reviewing, and maintaining technical documentation and network schematics. Implement and support advanced network and security More ❯

successes like the Raspberry Pi. Additionally, we host a Sony customer service and solutions centre, a business incubation centre, and more. Role Overview: We are looking to strengthen our network team with a focus on security. The Network Security Engineer will be essential in safeguarding and improving our factory's network infrastructure. Responsibilities include designing … implementing, and maintaining secure, efficient networks to meet operational needs, ensuring system reliability, optimizing performance, and proactively addressing vulnerabilities. The role involves collaboration with internal teams to ensure the network is robust, secure, and compliant with high security standards, implementing best practices and advanced security protocols to protect critical network systems. Key Responsibilities: Network Security: Implement and maintain security policies for our network infrastructure. Network Monitoring and Maintenance: Monitor performance, resolve issues, conduct audits, and update Cisco equipment. Network Optimisation: Plan and deploy capacity upgrades supporting business growth and performance. Research and Development: Recommend and integrate new network technologies to enhance security and efficiency. Collaboration and Communication: Work More ❯

Network Security Operations Senior Engineer - UK page is loaded Network Security Operations Senior Engineer - UK Apply locations GBR - Northumberland - Cramlington GBR - London - London time type Full time posted on Posted 2 Days Ago time left to apply End Date: September 2, 2025 (30+ days left to apply) job requisition id R535396 Job Description The … Position As a member of the team in Business Technology, the successful candidate will be part of the Network Service Delivery and Operations team ensuring the operation of our Company's Global Network. These services allow our Company to communicate globally and collaborate worldwide with partners and customers. This role requires a skilled individual with extensive experience in network security. Responsibilities Work to support the continuity, stability and security of Organon's network. Assist with network security requests coming from other teams. Troubleshoot network security related issues. Cooperate with Network Engineering and Architecture team on solving complex incidents. Required Education, Experience, and Skills Extensive experience in network security. Experience with management More ❯

and throw yourself in the deep end of tech. Within this role, you will report to the Head of security. You will play a senior role within the London network security team responsible for managing the entire infrastructure and networks. You will be able to bring your expertise to the table and work in a shared engineering environment. … This is a fantastic opportunity to join a cutting-edge trading and technology firm that pushes the boundaries of innovation in global markets and offers an environment where a Network Security Engineer can thrive. You'll have the opportunity to work on high-impact projects, protecting the infrastructure that powers industry-leading trading strategies. If you're … passionate about security and want to contribute to a company at the forefront of both finance and technology, this role offers the perfect blend of challenge and opportunity Responsibilities: Play the lead role with the network security team for London Gather requirements, implement solutions and support the global infrastructure Design configure and maintain Cisco ISE Automate security More ❯

Are you an experienced L3 Network Security Engineer looking for your next contract role? Join one of the world's leading IT services, consulting, and business solutions organization. Founded in 1968, the company consistently ranks among the top global IT service providers. With a presence in over 50 countries, the company has built a reputation for delivering … world's largest airline groups with 600+ aircraft carrying more than 122 million customers to 260 destinations across 91 countries each year. They are currently seeking an experienced L3 Network Security Engineer to join the team on a 6-month contract based in West London. Ready to make a move? Get in touch and apply today! Key … networking issues. Configure and manage wireless infrastructure, ensuring optimal performance and security. Assist in the deployment and maintenance of F5 load balancers. Collaborate with cross-functional teams to support network upgrades, migrations, and performance tuning. Required Skills: Expert-level experience with Juniper routing and switching platforms (eg, MX, EX, SRX). Strong understanding of wireless networking (802.11 standards, WLAN More ❯

Data network and security engineer Either location – London, Camberley, Bromley or Chester 12 month contract Inside IR35 As a Data Network and Security Engineer, your role and responsibilities will involve: • Eliciting, analysing and documenting technical application and service requirements • Working with multiple technical teams to identify end to end solutions that balance business, security … mitigation of risks within the operational environment. • Ensuring documentation is updated to reflect new additions to or modifications in the environment and handed into Operations successfully As a Data Network and Security Engineer, your skills and qualifications will include: • Cisco/Arista/Checkpoint/Fortinet certifications • Strong DC architecture and engineering Experience • A very strong understanding … understanding and experience of firewall rule deployments on Fortinet, CheckPoint or Juniper environment would be an advantage • Strong communication and technical analytical skills • A recognition of the requirement for Security within the Network, and • A good strong team player but capable of self-working • Strong client focus If you believe you have the experience required, please apply with More ❯

Data network and security engineer Either location – London, Camberley, Bromley or Chester 12 month contract Inside IR35 As a Data Network and Security Engineer, your role and responsibilities will involve: • Eliciting, analysing and documenting technical application and service requirements • Working with multiple technical teams to identify end to end solutions that balance business, security … mitigation of risks within the operational environment. • Ensuring documentation is updated to reflect new additions to or modifications in the environment and handed into Operations successfully As a Data Network and Security Engineer, your skills and qualifications will include: • Cisco/Arista/Checkpoint/Fortinet certifications • Strong DC architecture and engineering Experience • A very strong understanding … understanding and experience of firewall rule deployments on Fortinet, CheckPoint or Juniper environment would be an advantage • Strong communication and technical analytical skills • A recognition of the requirement for Security within the Network, and • A good strong team player but capable of self-working • Strong client focus If you believe you have the experience required, please apply with More ❯

Are you passionate about network & security and ready to take on an exciting role in a global company? Join a prominent logistics and supply chain management company that offers a wide range of services, including road, air, sea, and warehouse logistics. They are currently seeking for a Network & Security engineer who will be responsible for … deploying, administering, and supporting cutting-edge global networks and security systems. If you're looking to make a real impact, work with the latest technology, and grow your career, this is the perfect opportunity for you. Want to learn more about this opportunity? Feel free to reach out and apply today! Responsibilities : Deploy, administer, and maintain network and … security platforms (routers, switches, firewalls, VPNs, and more). Conduct diagnostics to ensure maximum reliability across Cisco-based technologies. Monitor network traffic and optimize performance for enhanced efficiency and security. Implement remote access and VPN solutions, and manage PKI certificates. Collaborate with IT and security teams to integrate security measures into new systems and applications. Provide More ❯

population, they continue to set the standard as the UK's best mobile network. Ready to take the next step in your career? Apply today! Responsibilities: Provide 3rd line network security support, troubleshooting and resolving complex issues Work with Fortinet, Palo Alto, Cisco, or Checkpoint (strong expertise in at least one required) Operate in a highly secure environment … SC Clearable candidates preferred) Follow a DuPont shift pattern, ensuring 24/7 coverage of network security operations Collaborate with cross-functional teams on security implementations, upgrades, and incident response Required Skills/Qualifications: Experience in a 3rd line network security role, handling complex troubleshooting and support Strong skills in at least one of the … office) = 1 Day Off This cycle repeats every 4 weeks. Benefits: Hybrid shift model: Nights worked from home, days onsite in Sheffield, Belfast, or Hatfield Work on cutting-edge network security solutions in a high-security environment A structured shift pattern with regular extended time off Salary: £55,000 - £65,000 base salary + £10,000 shift More ❯

Security Engineer Remote with occasional trave to their London office 10 - 12 month contract - starting in August Inside IR35 £450 - £475pd iO are working with an established and successful Consultancy in their search for an experienced Network Security Engineer They have a global presence providing expertise in Cloud, Security and Networking. They provide services … from Strategy and design through to implementation and support This position is critical for designing, implementing, managing, and optimizing the organization's complex network infrastructure, ensuring its stability, security, and scalability, particularly during critical transition and integration phases To be considered for this role you must have experience in the following: Palo Alto Networks Firewalls/Global Protect …/decryption/DLP Fortinet Juniper Routers/Firewalls Good with knowledge of network automations and infrastructure as code Terraform, Ansible and Git Interested in hearing more? Please get in touch with Rebecca Long on/ More ❯

Darkshield is an expert cybersecurity agency based in York, UK. We help organisations navigate an increasingly complex digital landscape by providing expert services in penetration testing, vulnerability assessment, managed security, and more. Our mission is to protect businesses by delivering tailored, cutting-edge cybersecurity solutions that keep them resilient and ahead of cyber threats. The Role We are looking … for a Network Security Engineer to design, implement, and maintain robust security solutions that protect our clients' networks from cyber threats. Key Responsibilities Design, implement, and maintain secure network architectures. Monitor and respond to security threats across network infrastructure. Conduct firewall configurations, VPN implementations, and intrusion prevention. Perform security audits and risk … assessments on network environments. Requirements Proven experience in network security engineering. Strong understanding of networking protocols, firewalls, IDS/IPS, and VPN technologies. Hands-on experience with security tools such as Cisco ASA, Palo Alto, Fortinet, and others. Knowledge of cloud networking and security (AWS, Azure, or Google Cloud) is a plus. More ❯

Job Description Data network and security engineer Either location – London, Camberley, Bromley or Chester 12 month contract Inside IR35 As a Data Network and Security Engineer, your role and responsibilities will involve: • Eliciting, analysing and documenting technical application and service requirements • Working with multiple technical teams to identify end to end solutions that balance … business, security, availability and resiliency requirements • Creating and documenting designs utilizing design patterns and standard approaches to best meet requirements • Configuration of devices to deploying new services into production • Participating in the prioritization and scheduling of implementation activities. • Managing stakeholder requirements • Active participation in the Change Management process • Assisting with the troubleshooting of existing and new implementations to resolve … mitigation of risks within the operational environment. • Ensuring documentation is updated to reflect new additions to or modifications in the environment and handed into Operations successfully As a Data Network and Security Engineer, your skills and qualificat... More ❯

Network Security Engineer - Global Tech Operations Location: Basingstoke (Hybrid - 3 days per week on-site) Salary: £50,000-£55,000 + excellent benefits Join a business undergoing transformation, where you'll have the opportunity to shape how security and networking are delivered across a global, high-integrity environment. This is a great opportunity for an experienced … Network Engineer with a strong troubleshooting mindset and a growing interest in cybersecurity tools and processes. This isn't a rinse-and-repeat support desk role. You'll work on critical infrastructure, be trusted with important decisions, and have the chance to grow in both technical breadth and depth. With a new leadership team in place and investment … supporting and improving complex networks and core infrastructure systems across a secure production environment. Day to day, you'll be configuring switches and firewalls, monitoring performance, investigating issues at network and transport layers, and helping maintain and evolve the organisation's security stack-including Defender XDR, SentinelOne, and iBoss. You'll work closely with infrastructure and security More ❯

makes. Come join a high-performing team doing complex and critical work. Help build and keep the nation's critical infrastructure connected and protected 24/7. As a Network and Security Engineer reporting to the Head of Infrastructure Operations, you'll play a pivotal role in our ongoing digital transformation. You'll help design, implement, and … working role, with a requirement to be in our Warwick HQ 1-2 days per week, as well as ad-hoc travel on occasion. What You'll Do: Lead network design and architecture for Telent's Corporate Enterprise network - producing, reviewing, and maintaining technical documentation and network schematics. Implement and support advanced network and security solutions using Cisco technologies including Software-Defined Access (SDA) and SD-WAN. Strengthen our security posture through centralized authentication (ISE), Cisco Umbrella, and next-gen firewalls (FTD/ASA). Monitor infrastructure health using Cisco tools like ThousandEyes and Catalyst Centre. Manage third-party vendors and licensing contracts to keep infrastructure robust and compliant. Collaborate in the delivery More ❯

A fast-growing hedge fund is building its technology stack from the ground up and seeking a Cloud Network & Security Engineer to take ownership of its cloud networking and security infrastructure. As a Cloud-First, Multi-Cloud company leveraging AWS & Azure, they need an expert to design, secure, and optimize their cloud network architecture. This … is a unique opportunity to build and define the network for a cloud-first hedge fund. If you're a driven Network Engineer looking to make a real impact, apply now! Key Responsibilities: This is a blend of design, implementation, and support, giving you the chance to shape and build the network from scratch. You'll … be responsible for: Designing and delivering cloud-based and on-prem network and security solutions Working with Palo Alto Networks (essential), Cisco, or Arista Supporting a multi-cloud (AWS & Azure) and on-prem data center environment Collaborating with the Senior Technology stake-holders to define and implement best practices Helping build low-latency and high-performance networking (HFT More ❯

Job Description 2nd Line Network Security Engineer Location: Bracknell This role is shift-based We are seeking a shift-based engineer to provide 24x7x365 support for gateway, sensor, and DHCP technologies. The role involves technical oversight and guidance for shift technicians managing security enforcement devices, resolving complex faults, and liaising with Third Line support for … escalations. Our purpose is to make the world more sustainable by building trust in society through innovation. As a Security Engineer, you will contribute by ensuring the operational effectiveness of our security technologies. Your role Your responsibilities include providing continuous support for gateway, sensor, and DHCP technologies, offering technical oversight and expertise to shift technicians responsible for … managing security enforcement devices both during and outside normal hours. You will support and resolve complex faults, liaise with the Third Line team for escalations, and cover technician responsibilities when needed. Your experience Experience in technical support within a service operations environment. Understanding of network concepts such as communication protocols and security technologies. Good communication skills. Ability More ❯

SEP2 Limited Per Hour Primary Function: The Project Delivery Engineer role will be responsible for service implementation of hardware installation and network/security configurations in a hands - on capacity . This role has a strong focus on being a customer facing technical engineer primarily focused on UK customers, with international service delivery as required . … are not spent on-site. Main Tasks: Delivering technical service excellence to customers over a variety of technology stacks, with a primary focusing on Check Point as a field engineer Is responsible for delivering implementation tasks, assigned by the project lead including but not limited to physical installation of equipment, power and network cabling, management configuration and licensing … call through to technical delivery and completion Can write effective statement of work documentation using SEP2 template tools with customisation as required per project The ability to troubleshoot complex network/security scenarios , resulting in either a resolution of the configuration on the to-be-installed device, or recommendations to the customer surrounding their wider network topology More ❯