1 to 25 of 117 Network Security Jobs in the South East

## Network and Security Service Delivery EngineerApply: Wokingham, RG41 5BN: Warwick, CV34 6DA: Full time: Posted Today: End Date: September 29, 2026 (13 days left to apply): JR100892**About the Role**NESO seeks a visionary Network Security Service Delivery Engineer to lead the strategic design … evolution of our network security infrastructure. This role is responsible for setting the direction and defining the architectural blueprints that underpin NESO’s secure, scalable, and resilient energy system. The Network Security Engineering role bridges business objectives with technical execution, ensuring our network security ...

Network Security Architect - FortiGate, Palo Alto, Zero Trust The Senior Network Security Architect oversees the design, operation, and ongoing enhancement of enterprise network security capabilities across data centre, campus, WAN, cloud, and hybrid infrastructure environments. Details Location - London Hybrid - 2-3 days/week … office Duration - Initially 12 months Rate - Up to £850 per day InsideIR35 via Umbrella Skills and Experience Required Proven experience as a network security architect in the financial services industry Experience working on end-to-end projects Define, maintain, and lead the network security architecture across ...

Security Architect – DV ClearedLocation: Farnborough, Hampshire, UKEmployment Type: Permanent, Full-TimeSecurity Clearance: Developed Vetting (DV) – EssentialSalary: 70,000 – 85,000 + BenefitsAbout the RoleThe Security Architect designs and implements comprehensive security architectures protecting defence and aerospace IT environments. You will develop enterprise security strategies, lead security programme implementations, architect integrated defence-in-depth solutions, and ensure compliance with stringent MOD security requirements. This role demands exceptional expertise in security architecture, risk management and defence security standards. Key ResponsibilitiesSecurity Strategy & ArchitectureDesign holistic security architectures incorporating people, process and technology securityDevelop enterprise-wide ...

Security Architect - DV Cleared Location: Farnborough, Hampshire, UK Employment Type: Permanent, Full-Time Security Clearance: Developed Vetting (DV) - Essential About the Role The Security Architect designs and implements comprehensive security architectures protecting defence and aerospace IT environments. You will develop enterprise security strategies, lead security programme implementations, architect integrated defence-in-depth solutions, and ensure compliance with stringent MOD security requirements. This role demands exceptional expertise in security architecture, risk management and defence security standards. Key Responsibilities Security Strategy & Architecture Design holistic security architectures incorporating people, process and technology ...

developing superior products and meeting high customer expectations. We view our winning culture as a competitive advantage that powers our growth. We're seeking Security & Network Engineer who can architect and operationalise a secure, compliant, and agile network and infrastructure backbone. You'll own the design … governance of our network, security policies and infrastructure architecture across hybrid cloud and on-premises environments. More than a technician, you're a strategist: someone who shapes policy, educates stakeholders, and mentors teams to embed security thinking into every decision—without strangling velocity. Reporting to the Head ...

powerful brand portfolio includes MILWAUKEE, RYOBI, AEG - recognized worldwide for their deep heritage and innovative product platforms of superior quality. We're seeking Security & Network Engineer who can architect and operationalise a secure, compliant, and agile network and infrastructure backbone. You'll own the design and governance … network, security policies and infrastructure architecture across hybrid cloud and on-premises environments. More than a technician, you're a strategist: someone who shapes policy, educates stakeholders, and mentors teams to embed security thinking into every decision—without strangling velocity. Key Responsibilities Network Architecture & Design: Lead ...

Title: Lead IT Network Administrator, Network, Voice, AVKBR is seeking a Lead IT Network Administrator (Network, Voice & AV) to join our team supporting complex, mission critical IT infrastructure across enterprise and secure environments. This role is responsible for leading the administration, optimisation, and support of networking … voice, and audiovisual services, ensuring high levels of performance, security, and availability across multiple sites. The successful candidate will bring strong expertise in Cisco networking technologies, network security, cloud connectivity, and unified communications, while serving as a key technical escalation point for operational support and infrastructure projects. ...

Security Tester, Oracle Cloud Infrastructure – London, UK Up to £1,000 per day, depending on experience 12-month contract engagement London, hybrid working with 4 to 5 days per week onsite Active eDV clearance required ABOUT THE CLIENT Our client is a major technology and consulting organisation delivering … high-profile cloud transformation programme within a secure environment. They are looking for an experienced Security Tester to strengthen security assurance across Oracle Cloud Infrastructure, architecture, networks and access controls. THE BENEFITS Work on a complex, high-profile cloud programme Collaborate with experienced architecture, engineering and security ...

services to 16 million customers. We are looking for a highly technical, operationally focused and delivery driven OT Technical Manager to lead the performance, security, resilience and support of our Operational Technology estate and associated digital services. What you’ll do as an OT Technical Manager OT Technical Leadership … senior operational technical authority for Thames Water’s OT technology estate and associated digital services. Lead the teams responsible for IT network operations, enterprise network security, cyber compliance, OT compute, active directory and identity services. Ensure the integrity, security, availability, resilience and supportability of OT systems ...

Security Architect - Zero Trust - DV Cleared Location: Farnborough, Hampshire, UK Employment Type: Permanent, Full-Time Security Clearance: Developed Vetting (DV) - Essential About the Role We are seeking a highly experienced Security Architect with a strong focus on Zero Trust Architecture (ZTA) to design, implement and evolve secure … enterprise environments. You will lead security transformation initiatives, develop enterprise-wide security strategies, and implement identity-centric security architectures aligned with modern Zero Trust principles. This role requires deep expertise across identity, cloud, infrastructure and cyber security domains, ensuring organisations remain resilient against evolving cyber threats ...

Security Architect – Zero Trust – DV ClearedLocation: Farnborough, Hampshire, UKEmployment Type: Permanent, Full-TimeSecurity Clearance: Developed Vetting (DV) – EssentialSalary: 70,000 – 85,000 + BenefitsAbout the Role We are seeking a highly experienced Security Architect with a strong focus on Zero Trust Architecture (ZTA) to design, implement and evolve … secure enterprise environments. You will lead security transformation initiatives, develop enterprise-wide security strategies, and implement identity-centric security architectures aligned with modern Zero Trust principles. This role requires deep expertise across identity, cloud, infrastructure and cyber security domains, ensuring organisations remain resilient against evolving cyber ...

Network Security Architect Hampshire/Hybrid 6 month contract SC cleared circa 600 per day We are looking for a Senior Networking & Security Specialist to take a technical lead role in the design, implementation and delivery of complex multi-vendor network and security solutions. This … hands-on position requiring strong expertise across routing & switching, network security, data centre networking and SD-WAN , alongside the ability to produce high-quality technical designs and lead delivery. Key Responsibilities Lead the design and implementation of complex network and security solutions. Produce HLDs, LLDs, implementation ...

Title:**Senior Network AdministratorKBR is a global provider of differentiated, professional services and technologies delivered across a wide government, defense and industrial base. Drawing from its rich 100-year history and culture of innovation and mission focus, KBR creates sustainable value by combining engineering, technical and scientific expertise with … services, and long-term operations and maintenance services to ensure consistent delivery with predictable results. At KBR, We Deliver.KBR is looking for a Senior Network Administrator.The Senior Network Administrator is responsible for the administration, maintenance, security, and operational reliability of enterprise network infrastructure supporting KBR operations. ...

World Class Defence Organisation is currently looking to recruit a Network Engineer subcontractor on an initial 12 month contract. please note: Current DV Security Clearance is required. Rate: £68.75 per hour Location: Stevenage Hybrid/Remote working: Onsite 4 days per week, 1 day remote from home. … will be calculated at time and a quarter Duration: 12 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella) Network Engineer Job Description: DEx Networks are responsible for the management and support of networks across the UK estate, and some International locations (MCN). ...

services to 16 million customers. We are looking for a highly technical, operationally focused and delivery driven OT Technical Manager to lead the performance, security, resilience and support of our Operational Technology estate and associated digital services. You will act as a senior operational technical authority across OT infrastructure … connectivity, enterprise network security, cyber compliance, compute platforms, active directory and identity services. Leading specialist internal teams and strategic service partners, you will ensure that the critical technologies supporting our water and wastewater operations remain available, secure, resilient and fit for purpose. This is a broad and influential ...

Recruiting: Operational Security Lead & Cyber Vulnerability Manager Location: Hybrid - 1 x week in Marlow Department: Information Security Monday-Friday Are you an experienced cyber security professional with a passion for security operations, incident response and vulnerability management? We're looking for an Operational Security Lead … Cyber Vulnerability Manager to play a critical role in protecting Kensington's technology estate, leading our operational cyber security capability and driving continual improvements to our security posture. This is an excellent opportunity to join a growing Information Security function, working closely with senior stakeholders across ...

Team Join the team protecting the UK's world-leading education and research sector from an ever-evolving cyber threat landscape. Jisc's Security Operations Centre (SOC) plays a critical role in safeguarding the Janet Network, the UK's National Research and Education Network, which connects more … than 20 million users across universities, colleges and research organisations. Combining cutting-edge security technologies, threat intelligence and specialist expertise, we provide 24/7 protection, rapid incident response and advanced threat detection to help our members stay secure and resilient. Security Centre brings together Cyber Security ...

insights, innovations, and solutions that efficiently and responsibly resolve complex natural resource, digital, energy transition and infrastructure challenges. Job SummaryWe are seeking for a Network Engineer to support the operation, reliability, and continuous improvement of its global enterprise and data centre network infrastructure. Based within the Network Operations team at the UK HPC Hub, this role is responsible for supporting enterprise, data centre, cloud-connected, security, and SD-WAN environments. You will contribute to operational support, infrastructure projects, and technology lifecycle activities while helping improve the resilience, performance, and security of Viridien's global ...

## Network EngineerApplyremote type: On-sitelocations: Haywards Heath, United Kingdomtime type: Full timeposted on: Posted Todayjob requisition id: JR101435Viridien (www.viridiengroup.com) is an advanced technology, digital and Earth data company that pushes the boundaries of science for a more prosperous and sustainable future. With our ingenuity, drive and deep curiosity … insights, innovations, and solutions that efficiently and responsibly resolve complex natural resource, digital, energy transition and infrastructure challenges.# **Job Details**Viridien is seeking a **Network Engineer** to support the operation, reliability, and continuous improvement of its global enterprise and data centre network infrastructure.Based within the Network Operations ...

Cyber Security Manager – London, UK Up to £95,000 Depending on Experience Hybrid working, 2-3 days per week onsite in London Existing Active SC or DV clearance required About The Client Our client is a major organisation delivering cyber security and technology transformation programmes across some … most complex and sensitive environments. They work closely with Defence and Government customers, helping them strengthen security, manage cyber risk and deliver secure transformation. Due to continued growth, they are looking for an experienced Cyber Security Manager to join their team. The Benefits Work on high-impact Defence ...

what they bring to the table, supporting one another as we continue to deliver for our customers. LI-KS1 The role of Cyber Security Consultant sits within the Cyber Security team in Three UK, which is responsible for providing subject matter expertise and guidance to business units across … Three’s Network and Enterprise domains to enable the business to deliver its outcomes in a secure manner, building customer trust in a reliable network which matches the best, whilst ensuring compliance to regulatory requirements, company policy and standards. In this role you will have a broad ...

well-established international bank is looking for an experienced Cyber Security Network Engineer to join an expanding team. You will manage and strengthen key security platforms including Cisco Firepower, F5 WAF/ASM and Citrix NetScaler, drive remediation of vulnerabilities, and ensure network and security … vulnerability management lifecycle, including vulnerability scanning, risk-based triage, remediation tracking, patch verification and KPI reporting. Manage and maintain key network security infrastructure, including Cisco Firepower firewalls, F5 WAF/ASM and Citrix NetScaler, as well as VPN, IPsec and network access controls. Maintain strong change management ...

Cyber Security Architect Remote | Outside IR35 | Telecoms Sector We're currently looking for an experienced Cyber Security Architect to join a leading organisation within the telecommunications sector on a fully remote, Outside IR35 contract. This is an exciting opportunity to play a key role in large-scale transformation … programmes spanning cloud, infrastructure, applications and network environments, including next-generation 4G/5G technologies . As a Cyber Security Architect, you will be responsible for ensuring security is embedded into the design and delivery of business-critical platforms and services. Working closely with architecture, engineering, cloud ...

Role As an Application Security Architect, you are a security expert and evangelist. You provide subject matter expertise and security guidance to product engineering teams and IT to design and build secure solutions, drive the implementation of security best practices, establish security architecture standards … patterns, and perform security architecture reviews. You will partner with other security leads to grow the security program, mentor junior security team members, measure adherence, suggest and implement changes, develop roadmaps, present to steering committees and engineering teams, and promote security awareness company wide. What ...

myriad of transformation programs. About the role: You will support the development, operation and continuous improvement of Bell’s wired, wireless and secure network services across enterprise, data centre, customer and emerging AI infrastructure environments. The role is designed to build foundational network engineering capability, with a primary … focus on Cisco technologies, routing and switching, wireless networking, network security and operational support, while developing awareness of modern data centre networking concepts such as EVPN/VXLAN, software-defined networking, automation, observability and high-performance AI fabrics including NVIDIA InfiniBand. Working under the guidance of senior network ...