1 to 25 of 34 Senior Network Engineer Jobs in the South East

Senior Network Engineer - Cisco, CCNA, CCNP, CCIE x multiple opportunities Location: London – Hybrid (2 days in-office) Salary: £60,000 - £70,000 DOE + Bonus, Healthcare, Pension, Training Must be UK based and eligible to live and work in the UK. About the Company Join a fast … training and certifications from leading vendors, including hands-on experience with Cisco ISE, DNA Centre, SD-Access, and other advanced networking technologies. The Role: Senior Network Engineer As a network engineer, you’ll play a crucial role in managing and maintaining enterprise-level network environments. Your primary focus will be network monitoring, network management, escalated troubleshooting, and incident resolution, ensuring optimal performance and minimal downtime for clients. You’ll have full ownership of the network infrastructure, providing high-level support and proactive problem-solving while collaborating on key projects. Key More ❯

per annum (Discretionary range to £65,675) Post Type:Full time/Permanent Closing Date:28/05/2025 Ref No 11544 Documents Senior Network Engineer JD - Diamond-II V1.0.docx (Word , 51.41kb) Senior Network Engineer PS - Diamond-II V1.0.docx (Word , 40.62kb) About Us … treatments for disease to innovative engineering and cutting-edge technology. World class science requires world class computing infrastructure. Our Scientific Computing team provides computing network and storage systems that keep Diamond and its scientists at the forefront of scientific research About the Role We now have an excellent opportunity … for a Senior Network Engineer within Diamond's Scientific Computing team to support and develop the scientific and controls networks used for cutting edge science. High bandwidth ethernet forms the basis of all the critical networks within Diamond alongside more specialist low latency fabrics. These enable rapid More ❯

Job Title: Senior Network Engineer Salary: £54,320 £60,981 per annum Location: London Role Type: Permanent, Full-Time Recruiting on behalf of: London NHS Trust Overview: Blue Pelican is working in partnership with a respected NHS Trust in London to recruit a Senior Network Engineer . This is a critical role for an experienced network professional to lead the Trusts day-to-day IT network operations, infrastructure security, and project delivery. You will manage LAN, WAN, WiFi, VMware environments, firewalls, and server infrastructure, ensuring high performance, resilience, and compliance across … and complex healthcare setting. Key Responsibilities: Manage the Trusts Local Area Networks, Wide Area Networks, WiFi, and VMware environments Configure, monitor and maintain servers, network switches, firewalls, and desktop equipment Provide technical expertise in network design, performance tuning, and capacity planning Implement changes in collaboration with the Network More ❯

Senior Network Engineer 📍 Location: Cosham, Portsmouth (Hybrid – Mostly remote, 2-3 days/month in office) 🕐 Employment Type: Permanent 💼 Salary: £55,000 to £60,000 DOE, with on-call bonuses (£300/week + 1.5x pay for time worked) About the Company: Join a leading IT infrastructure … solutions provider, where innovation and expertise drive success. Our team supports global clients with cutting-edge network technologies, ensuring reliability, security, and performance. As part of our dynamic network engineering team, you’ll play a key role in maintaining and advancing critical network infrastructures while working in … a flexible, collaborative environment. Role Overview: As a Senior Network Engineer , you’ll take ownership of the day-to-day support, optimisation, and project delivery for our clients’ networks. You’ll troubleshoot complex issues, design scalable solutions, and mentor junior engineers—all while working with top-tier More ❯

Senior Network Engineer 📍 Location: Cosham, Portsmouth (Hybrid – Mostly remote, 2-3 days/month in office) 🕐 Employment Type: Permanent 💼 Salary: £55,000 to £60,000 DOE, with on-call bonuses (£300/week + 1.5x pay for time worked) About the Company: Join a leading IT infrastructure … solutions provider, where innovation and expertise drive success. Our team supports global clients with cutting-edge network technologies, ensuring reliability, security, and performance. As part of our dynamic network engineering team, you’ll play a key role in maintaining and advancing critical network infrastructures while working in … a flexible, collaborative environment. Role Overview: As a Senior Network Engineer , you’ll take ownership of the day-to-day support, optimisation, and project delivery for our clients’ networks. You’ll troubleshoot complex issues, design scalable solutions, and mentor junior engineers—all while working with top-tier More ❯

Senior Network Engineer – London (Hybrid) - £75,000 - £100,000 + Bonus + Benefits We’re looking for a skilled Senior Network Engineer to join our clients dynamic team. In this role, you’ll design, implement, and maintain critical networking infrastructure while driving automation and … efficiency. Key Responsibilities: Oversee the design, implementation, and maintenance of Cisco ACI infrastructure. Develop automation solutions for network tasks using Python, Ansible, and Terraform. Engineer and support enterprise-grade network systems, including Cisco routers, Nexus data centre switches, and wireless LAN controllers. Configure and manage Palo Alto … firewalls, ensuring adherence to robust security standards. Deploy and administer network access control solutions with Cisco ISE (802.1x and TACACS). Optimise uptime and performance using F5 Big-IP load balancers. Design and manage advanced routing solutions with protocols such as BGP and OSPF, as well as SD-WAN More ❯

Senior Network Engineer Location: London Salary: £200,000-£250,000 Role Overview: Seeking a Senior Network Engineer to lead the design, implementation, and management of high-performance network solutions, with a focus on research infrastructure combining AWS cloud services and advanced data center … platforms. Key Responsibilities: Network Architecture : Design and deploy scalable network solutions, including core switching, firewalls, load balancers, and automation frameworks. Full Lifecycle Management : Oversee network lifecycle from design through deployment, operation, and retirement. Automation & IaC : Utilize Infrastructure as Code (IaC) and automation to streamline network delivery. … computing environments. Vendor Expertise : Leverage expertise in Cisco, Arista, Juniper, and NVIDIA products to drive architecture decisions. Qualifications: Proven experience in complex, high-performance network architecture. Strong focus on software-driven, agile methodologies. Expert knowledge of vendor ecosystems and emerging networking technologies. More ❯

Role: Senior Network Engineer Salary: £36,000 Location: Kings Hill/Hybrid Why Join Cantium? Cantium Business Solutions is a dynamic and innovative company, committed to providing high-quality back-office services to our customers. With a strong focus on customer-centric solutions, we are continually growing … empowered to make a difference. As part of the Connectivity Services team, you'll play a key role in shaping the future of our network and security infrastructure services. What You’ll Bring: Extensive experience in managing and configuring network and security infrastructure, including Cisco switches and routers … and AP’s). Expertise in cloud networks, particularly Azure, with hands-on experience supporting and configuring cloud-based infrastructure. Strong skills in using network management tools (e.g., SolarWinds) for performance monitoring, troubleshooting, and reporting. Proven experience in mentoring and coaching junior engineers, with a focus on team development More ❯

Position: Senior Network Engineer Location: South Oxfordshire On site: 5 days Salary: £50k - £60k Company benefits: * Flexible working * family friendly policies * Health and wellbeing * Saving's schemes * Learning & development * And more * Working with the Senior Network Administrator and IT Security Officer within our clients Scientific … Computing group, the post will be responsible for co-development of the design, development, commissioning and operational support of their science facing network infrastructure both for current facility operations and to play a key role in the delivery of network upgrade and transformation projects. As such, the job … enable effective, dependable, and resilient operation of the clients accelerators, science beamlines, and data centre operations. * Co-design and development of Diamond's Science Network infrastructure to support high performance detectors, storage systems, and cluster services. * Provide network operations support and a source of technical expertise within the More ❯

Job Title: Senior Network Engineer Salary: £54,320 £60,981 per annum Location: London Role Type: Permanent, Full-Time Recruiting on behalf of: London NHS Trust Overview: Blue Pelican is working in partnership with a respected NHS Trust in London to recruit a Senior Network Engineer . This is a critical role for an experienced network professional to lead the Trusts day-to-day IT network operati... More ❯

Senior Network Engineer | HPC/AI Infrastructure | Outside IR35 6 month contract Based London Help build the ultra-fast network backbone behind next-generation AI. As a Senior Network Engineer , you’ll architect, deploy, and operate the ultra-low-latency network fabric … networking, supporting GPU clusters Deep knowledge of BGP, EVPN, VXLAN, MPLS Hands-on with Mellanox switches, Cumulus Linux, and Juniper Strong Linux CLI and network automation skills (Ansible, Python) Bonus if you have: JNCIE/CCIE, hybrid cloud networking (AWS/Azure), and experience with network telemetry If More ❯

Senior Network Security Engineer Leading global manufacturing company is looking for a Senior Network Security Engineer to join their growing Network Security Engineering team. The successful candidate will design and implement network security solutions connecting on-premises and public cloud environments, with … focus on Infrastructure-as-Code (IaC) and GitOps methodologies. This is a very technical role and will play a key part in securing the network infrastructure. London 5 DAYS A WEEK. Responsibilities: Design and deploy network security solutions across cloud and on-premises environments. routing and switching protocols … network performance. Analyze operational needs and develop innovative solutions to strengthen network security. Required: Hands-on experience within enterprise network security solutions. Advanced knowledge of routing and switching protocols. Deep understanding of firewalls. More ❯

Opticore IT is currently searching for a Senior Network Engineer to join one of our Financial Services clients for a new data centre implementation project . This opportunity will require you to be in Central London up to 4 days a week. Opticore IT is a specialist … Network Engineer and Project Management consultancy offering a wide variety of opportunities to work within fast-paced, challenging environments across our client base spanning multiple sectors including Finance, Broadcast Media, Telecommunications and more. You will be responsible for the deployment, and configuration of cutting-edge data centre technologies. … in exchange collocations Multicast configuration and troubleshooting Automation tools, including Git, Python, Golang, Jenkins, Terraform and Ansible What you'll bring: Minimum CCNP qualified network engineer Experience using Routing protocols - BGP Low latency networks, including layer 1 switching History working with Cisco IOS-XR, Cisco NXOS, Arista EOS More ❯

Senior Network Engineer Location: Ringwood, Hampshire Salary: £47,000.00 - £50,000.00 DoE + Profit Share Hours: 37.5 hours per week The Role We are looking for an experienced Senior Systems Engineer with a keen interest in building technical solutions to help us deliver outstanding service … expertise in the scoping, designing, implementing, and maintaining of LAN/WAN architectures, VPNs, firewalls, and routing Excellent knowledge of supporting and implementing enterprise network technologies including switching, firewalling, routing, and wireless products In-depth experience with enterprise grade network hardware (e.g. SonicWall, Cisco, Fortinet) Strong understanding of … network protocols and services (e.g. TCP/IP, DNS, DHCP, BGP, OSPF, EIGRP, MPLS) This role is subject to a clear standard DBS check being received. The Package Company Profit Share (first £3,600 is tax free). 22 days annual leave plus bank holidays, increasing with your length More ❯

A fast-growing Managed Service Provider is seeking a Senior Network Engineer to support a leading High-Frequency Trading (HFT) client. This is a high-impact role focused on Ultra-Low Latency (ULL) network engineering, working onsite at the client’s prestigious offices. 💡 About the Role … You’ll work closely with traders, developers, and technologists on cutting-edge network projects , focused on delivering the fastest, most reliable connectivity possible across the globe. Expect a heavy focus on Market Data , Multicast Networking , Venue Onboarding , and ULL optimisations . Network Automation training will also be provided … perfect for an engineer looking to move into next-gen network skills! 🎯 Key Responsibilities Deliver low-latency, high-performance network solutions for Market Data and HFT applications. Drive new Venue Onboarding projects across global markets. Engineer and optimize multicast and market data distribution. Implement, configure, and More ❯

Senior Network Engineer Location: Ringwood, Hampshire Salary: £47,000.00 - £50,000.00 DoE + Profit Share Hours: 37.5 hours per week The Role We are looking for an experienced Senior Systems Engineer with a keen interest in building technical solutions to help us deliver outstanding service More ❯

Senior Network Engineer Location: Ringwood, Hampshire Salary: £47,000.00 - £50,000.00 DoE + Profit Share Hours: 37.5 hours per week The Role We are looking for an experienced Senior Systems Engineer with a keen interest in building technical solutions to help us deliver outstanding service More ❯

Opticore IT are currently searching for a Senior Network Engineer to join our Broadcast Media client to ensure their Cloud and on-premise platforms are fit for purpose. You'll join our excelling team, based in the London area, two days a week. Opticore IT are a … rapidly expanding specialist Network Engineer and Project Management C onsultancy, offering a wide variety of opportunities to work within fast-paced, challenging environments across our client base spanning multiple sectors including Finance, Broadcast Media, Telecommunications and more. What you'll be doing: Re-implement and integrate our clients … and routing, across a number of routing protocols, but specific knowledge and history of BGP is a requirement. Good relevant industry exposure in the Network space. Demonstrable Security knowledge (Palo Alto, Checkpoint, Cisco ASA, Fortinet) and/or authentication services such as Cisco ISE. Excellent communication skills, with the More ❯

commercial presence in many global locations across the US, APAC and Europe. We are looking for a highly motivated individual to join as a Senior Network Engineer and be responsible for designing, deploying, managing and maintaining all aspects of the global network and physical infrastructure, ensuring … the best possible uptime and availability to support the business' customers, goals and growth. Responsibilities include: Plan, build, and deliver new network capabilities and deployments from standards and design documents to meet the needs of the business. Maintaining network security through proper configuration of firewalls, wireless access points … and VPN. Maintaining multi-site network operations to support internal applications, operating systems including regular maintenance with both private and public facilities. Physical installation and maintenance of network, power and server hardware. Creating and maintaining documentation and network diagrams. Full lifecycle management of network devices as More ❯

Job Title: Senior Network Engineer (Contract) Client: Elite Investment Firm Salary: Up to £600 Per Day Location: London Length: 6 Months Sells: Cutting-edge tech, ownership of multiple greenfield projects, no red tape, a friendly/collaborative environment, beautiful offices! An Elite Investment Firm is looking for … highly talented Network Engineer join a talented group group of individuals on an initial 6 month contract. This team have an unlimited tech budget, promote a great culture and are made up of fantastic like-minded individuals. Role: Working as part of a team of engineers looking after … and everything with Ansible and Python Work in a project focused team with a chance to work on cutting edge tech Skills: Experience in network architecture, design, deployment, etc. where scale and latency are important Strong knowledge of Arista AWS experience Linux experience Network automation experience (Python or More ❯

Description Senior Network Engineer Leidos heritage companies pioneered the development of air traffic control systems in the United States more than 50 years ago. Today our systems handle 75 per cent of the air traffic in the U.S. and approximately 60 per cent of the world's … the heart of the innovative development work to modernise ATM solutions. Job Description Working with the Account Architect you will design, deploy, and manage network solutions utilizing the following: Cisco ISE (Identity Services Engine) Cisco Catalyst Center (formerly DNA Center) Cisco Wireless systems leveraging 9800 Controllers Cisco SD-Access … and SD-WAN Cisco SASE services, including Umbrella and Secure Access Palo Alto firewalls Azure networking Maintain and enhance network infrastructure with advanced knowledge of: BGP and BGP Address Families MPLS technologies VPN and remote access solutions Cloud-based environments Collaborate with cross-functional teams to deliver secure and More ❯

We're hiring a Senior Network Engineer who will be responsible for the day-to-day support of our customer's network, ensuring its components are running and are working as expected. Triage and resolution of customer faults with support from wider team as required. Design … planning and implementation of project activities. You'll ideally have multi-vendor network experience of the following - Cisco, FortiGate, Meraki, Palo Alto, Sonicwall. Responsibilities: Ticket Management + Customer Service Must be an exemplar of the ticket management processes Working with the team to ensure that customer tickets are picked … Effective communication to the customer and within the team Infrastructure A subject matter expert in one or more relevant disciplines A comprehensive understanding of network infrastructure & IT ideologies and the interaction between physical, virtual and network layers Multi-vendor network experience of the following Cisco, FortiGate, Meraki More ❯

The details… We are looking for a highly motivated individual to join as a Senior Network Engineer and be responsible for designing, deploying, managing and maintaining all aspects of the global network and physical infrastructure, ensuring the best possible uptime and availability to support the business … customers, goals and growth. Responsibilities include: Plan, build, and deliver new network capabilities and deployments from standards and design documents to meet the needs of the business. Maintaining network security through proper configuration of firewalls, wireless access points and VPN. Maintaining multi-site network operations to support … internal applications, operating systems including regular maintenance with both private and public facilities. Physical installation and maintenance of network, power and server hardware. Creating and maintaining documentation and network diagrams. Full lifecycle management of network devices as well as support and development of network management and More ❯

the elements of this job advert carefully Please make your application promptly. We are looking for a highly motivated individual to join as a Senior Network Engineer and be responsible for designing, deploying, managing and maintaining all aspects of the global network and physical infrastructure, ensuring … the best possible uptime and availability to support the business’ customers, goals and growth. Responsibilities include: Plan, build, and deliver new network capabilities and deployments from standards and design documents to meet the needs of the business. Maintaining network security through proper configuration of firewalls, wireless access points … and VPN. Maintaining multi-site network operations to support internal applications, operating systems including regular maintenance with both private and public facilities. Physical installation and maintenance of network, power and server hardware. Creating and maintaining documentation and network diagrams. Full lifecycle management of network devices as More ❯

Network Security Engineer - Peterborough (Hybrid) - £75,000 - £100,000 + Bonus + Benefits We're seeking a skilled Network Engineer to join our client's dynamic team. In this role, you will design, implement, and maintain critical networking infrastructure while driving automation and efficiency. Key Responsibilities … Oversee the design, implementation, and maintenance of Cisco ACI infrastructure. Develop automation solutions for network tasks using Python, Ansible, and Terraform. Engineer and support enterprise-grade network systems, including Cisco routers, Nexus data centre switches, and wireless LAN controllers. Configure and manage Palo Alto firewalls, ensuring adherence … to security standards. Deploy and administer network access control solutions with Cisco ISE (802.1x and TACACS). Optimize uptime and performance using F5 Big-IP load balancers. Design and manage advanced routing solutions with protocols such as BGP and OSPF, as well as SD-WAN implementations. Utilize tools like More ❯