55 Cisco Network jobs in the United Kingdom

We are a $13+ billion global technology company, home to more than 224,000 people across 60 countries, delivering industry-leading capabilities centered around digital, engineering, cloud, and AI, powered by a broad portfolio of technology services and products.

HCLTech is a globally recognized leader in the Tech and IT industry, but we’ve never forgotten the startup mindset that got us here. We’ve always approached our work with an idea-first attitude because every one of our accomplishments —no matter how big or small —can be traced back to an idea’s single spark.

It’s that spark —that inner drive —that sets our people apart from our competitors. It enables us not just to pull off game-changing feat after game-changing feat but to better our world in the process. We want you to find your spark. Because that’s what drives you to be better, be more and ultimately, be more fulfilled.

Position: - Network Consulting Engineer – VXLAN & AI Data Center Networking

Location- London, UK

Job Type- FHybrid

Full time Employment - Permanent

Role Overview:

We are seeking a highly skilled Network Consulting Engineer (NCE) to design and implement next-generation VXLAN EVPN-based data center networks that support hypercomputing and AI infrastructure. This role is central to enabling the high-performance, low-latency environments required for multi-GPU clusters, distributed training pipelines, and scalable AI workloads.

The ideal candidate will bring deep expertise in VXLAN, BGP, EVPN, RoCEv2, and fabric-based networking, along with a solid understanding of the networking demands of large-scale AI and HPC environments.

Key Responsibilities:

•Design, deploy, and manage VXLAN EVPN-based fabric networks supporting AI and high-performance computing workloads.

•Build scalable spine-leaf architectures using Cisco Nexus 9000 or Arista switches, ensuring efficient Layer 2/Layer 3 segmentation and workload mobility.

•Optimize network performance for RoCEv2, GPUDirect, and low-latency traffic flows, ensuring maximum throughput and minimal jitter for GPU-accelerated clusters.

•Configure underlay and overlay protocols including BGP, OSPF, IS-IS, and troubleshoot connectivity and control-plane issues.

•Integrate data center fabric with virtualization platforms such as VMware NSX, KVM, and Hyper-V, as well as Kubernetes-based AI infrastructure.

•Collaborate with compute, storage, and DevOps teams to ensure end-to-end performance across AI training, fine-tuning, inference, and ETL pipelines.

•Drive network automation efforts using tools such as Python, Ansible, and Terraform, enabling Infrastructure-as-Code (IaC) for repeatable, scalable deployments.

•Participate in performance tuning, benchmarking, and capacity planning for evolving AI workloads and future-proof infrastructure designs.

Required Skills & Expertise:

•Proven experience designing and operating VXLAN EVPN-based data center networks.

•Strong knowledge of Cisco ACI, Nexus 9000, or Arista EOS platforms.

•Expertise in data center routing and switching, including BGP, OSPF, IS-IS, multicast, and fabric path.

•Deep understanding of AI-specific networking needs, including RoCEv2, DCB, PFC, and RDMA optimization.

•Hands-on experience with automation and orchestration tools such as Python, Ansible, and Terraform.

•Familiarity with GPU-accelerated workloads and distributed systems in AI/ML and HPC environments.

Preferred Qualifications & Certifications:

•CCNP or CCIE Data Center (highly preferred)

•Cisco Certified Specialist – Enterprise Core or Data Center Core

•Additional certifications in NVIDIA Networking (Cumulus/Spectrum) or Arista ACE are a plus

•Experience with hybrid and multi-cloud networking for AI clusters is desirable

CNI Network Administrator - 6 months - Hybrid (Wokingham) - Inside IR35

We are seeking a skilled CNI Network Administrator to join our team on a full-time basis , working 3 days per week on-site in Wokingham and 2 days remotely . In this role, you will be responsible for the administration of critical network infrastructures, including LAN, WAN, intranets, and CNI/SCADA systems.

Key Responsibilities:

• Analyse organizational IT infrastructure needs, design network architecture (LAN, WAN, intranets, SCADA/CNI), and present solutions to management.
• Assess network traffic, capacity, and speed requirements; recommend load balancing, segmentation, and optimization strategies.
• Identify, configure, and maintain required hardware (Routers, Switches, Firewalls) and software (drivers, VPNs, DNS).
• Implement and monitor network security measures, ensure compliance with audit standards, policies, and government regulations (ISO, CNI, SCADA, cybersecurity protocols).

What You Will Ideally Bring:

• Active SC Clearance
• Proven expertise in deploying and administering LAN, WAN, intranets, and critical CNI/SCADA networks.
• Strong knowledge of TCP/IP, IPv6, DNS, VPNs, Firewalls, load balancers, and segmentation.
• Deep understanding of network security principles, compliance frameworks, and regulatory requirements.
• Strong track record in installation, configuration, and operational support of network hardware/software.

Contract Details:

• Duration: 6 months (view to extend)
• Day Rate: Up to £400 per day (Inside IR35)
• Location: 3 days on site (Wokingham)
• Start Date: ASAP

IT Services

Part time (0.6 FTE, equivalent to three days per week), fixed term for three years.

Based on the Loughborough Campus

Here’s more about the role and what we are looking for:

We’re looking for a creative and enthusiastic individual to join our Network and Smart Campus Team.

You will work as part of an established technical team, assisting with the rollout of a new Wi-Fi network across the campus including physical replacement of wireless access points, configuration, structured cabling repairs and general network maintenance.

Key Requirements:

• You will have previous experience working on IT networks, structured cabling systems, patching fibre optic cables
• You will have excellent logical diagnostic skills with the ability to troubleshoot and resolve technical issues with wired and wireless networking technologies.
• You must be a good communicator, have a flexible approach to work, a willingness to learn and be a team player.

For more information refer to the Job Description and Person Specification.

Why should you apply:

As a member of IT Services, you can expect:

• Support in developing your career, allowing you to progress towards your goals in a friendly environment.
• Development opportunities including exposure to a wide breadth of technologies.
• Work closely with all our partners from across the University to support digital transformation and deliver outstanding levels of service that are recognised as the best in the country by our students in the National Student Survey.
• A superb 440-acre green site in the heart of Leicestershire with first-rate facilities, plenty of open space, gardens, and sports areas.
• A great salary and benefits package, generous holiday allowance and pension scheme.

Application process:

If you are interested in applying for this role, you must use the below steps as a guide to completing the application.

• Login to our vacancies platform, either by registering as a new user, logging in using existing details, or if you are an internal member of staff log in through my.HR.
• Complete all the required sections of the application form
• Fully complete the supporting statement as this will be used to assess your application, Within the supporting statement you should demonstrate, using examples, how you meet each of the "essential" and as many of the "desirable" criteria as possible – these are identified as “stage 1” in the person specification (within the Job Description).
• For further support refer to our application guidance , which includes some top tips and support to help you when completing your application

Please fully complete the application form as CVs will not be used.

Interview process and further information:

• Informal chats about the role are welcomed, please contact Anthony Tunley, Network and Smart Campus Team Manager,
• If your application is successful, you will be invited to undertake a technical assessment and interview. Both will be in-person and held on campus on the same day.

Closing Date: 5th September 2025

Interview Date: 15th September 2025

Location: Milton Keynes/ Northamptonshire

Contract: Full Time/Permanent

Salary: circa £4 5,000 + company vehicle allowance

At Anglian Water our values are that together, we will: Build trust, do the right thing, and we are always exploring.

Who are we?

As well as being essential to survive, water is the key to a thriving economy and a flourishing environment. By joining us, you'll become part of a company looking to raise awareness of the importance of water as we collaborate with customers, colleagues, communities to ensure we are securing a future water supply for our region.

• The maintenance delivery team are working on field based assets, using asset maps, data and tools they resolve both planned and reactive operational problems in a thorough and timely manner.

• Deploy data loggers in the water network system for monitoring both pressure and flow and reviewing the data produced.

• Investigate faults and promote remedial work.

• Fault finding of sensor units (loggers) installed for pressure and flow monitoring to ensure that availability and operability targets are achieved.

• Use available IT systems to record assets, the maintenance history and time spent operating and maintaining the assets.

• Carry out surveys on our critical assets in the network and provide data to Maintenance Delivery Lead for detailed analysis of new schemes.

• Carry out servicing of control valve assets including, pressure reducing valves, pressure sustaining valves and flow control valves

• Completion of risk assessments and where necessary impact plans for all network operations.

• Liaise with contractors and network partners to ensure that new and existing assets are operating and commissioned correctly.

• Valve operations including system re-zoning.

• Pre/post maintenance operation flushing and sampling to ensure clean water reaches our customers.

Which all enables the continued development of a calm and stable network which leads to achieving our company goals in reducing leakage, interruptions to supply, costs and continuing to improve our service to our customers.

What will you be doing as our new Network Delivery Support Manager?

This role presents an exciting opportunity for an exceptionally motivated and inspiring lead to be a driving force for operational excellence, fostering the development of a team of skilled technicians and planner. You will create a challenging, positive environment for your team members, prioritising wellbeing and performance with the focus overall to always deliver excellent results. You will take a proactive approach to operational excellence and you'll champion a culture where performance is paramount whilst keeping our Safer Every Day philosophy at the forefront of everything you do

Key responsibilities:

To support the planning, maintenance and project work within the area which will include, but not be limited to:

• Responsible for the maintenance plan implementation and completion

• Arranging traffic management where required

• First port of call for technical and process support for the Maintenance Delivery Team

• Completion of impact plans where necessary for all network operations.

• Continuous improvement of maintenance processes and procedures

• Reducing operating costs within their area of control

• Management of a team of Maintenance delivery Technicians and Maintenance delivery Planner

• Providing support in identifying asset enhancement opportunities and ensuring these are documented and raised with the Optimisation Team

• Maintenance of all pressure and flow logging across the network

• Identifying the best solution to existing challenges

• Ensure team are compliant with company health and safety standards

What skills and behaviours do you need?

• Good general knowledge of operational activities i.e. valve operations, data logging etc.

• An understanding of hydraulics

• Ability to interpret data and carry out problem solving

• Ability to adapt to technology changes

• IT literate

• Experience of managing a budget

• Strong communicator who can liaise with both internal and external customers

• Strong organisational abilities

• A proven track record of leadership skills, being able to demonstrate, challenge and question performance results

• Ability to identify opportunities for improvement or advancement and actively seek out creative solutions.

• Supporting out of hours work in the event of emergencies

As a valued employee, you'll be entitled to:

• Personal private health care

• 26 days annual leave - rising with length of service +

We are a $13+ billion global technology company, home to more than 224,000 people across 60 countries, delivering industry-leading capabilities centered around digital, engineering, cloud, and AI, powered by a broad portfolio of technology services and products.

HCLTech is a globally recognized leader in the Tech and IT industry, but we’ve never forgotten the startup mindset that got us here. We’ve always approached our work with an idea-first attitude because every one of our accomplishments —no matter how big or small —can be traced back to an idea’s single spark.

It’s that spark —that inner drive —that sets our people apart from our competitors. It enables us not just to pull off game-changing feat after game-changing feat but to better our world in the process. We want you to find your spark. Because that’s what drives you to be better, be more and ultimately, be more fulfilled.

Position: - Network Consulting Engineer – VXLAN & AI Data Center Networking

Location- London, UK

Job Type- FHybrid

Full time Employment - Permanent

Role Overview:

We are seeking a highly skilled Network Consulting Engineer (NCE) to design and implement next-generation VXLAN EVPN-based data center networks that support hypercomputing and AI infrastructure. This role is central to enabling the high-performance, low-latency environments required for multi-GPU clusters, distributed training pipelines, and scalable AI workloads.

The ideal candidate will bring deep expertise in VXLAN, BGP, EVPN, RoCEv2, and fabric-based networking, along with a solid understanding of the networking demands of large-scale AI and HPC environments.

Key Responsibilities:

•Design, deploy, and manage VXLAN EVPN-based fabric networks supporting AI and high-performance computing workloads.

•Build scalable spine-leaf architectures using Cisco Nexus 9000 or Arista switches, ensuring efficient Layer 2/Layer 3 segmentation and workload mobility.

•Optimize network performance for RoCEv2, GPUDirect, and low-latency traffic flows, ensuring maximum throughput and minimal jitter for GPU-accelerated clusters.

•Configure underlay and overlay protocols including BGP, OSPF, IS-IS, and troubleshoot connectivity and control-plane issues.

•Integrate data center fabric with virtualization platforms such as VMware NSX, KVM, and Hyper-V, as well as Kubernetes-based AI infrastructure.

•Collaborate with compute, storage, and DevOps teams to ensure end-to-end performance across AI training, fine-tuning, inference, and ETL pipelines.

•Drive network automation efforts using tools such as Python, Ansible, and Terraform, enabling Infrastructure-as-Code (IaC) for repeatable, scalable deployments.

•Participate in performance tuning, benchmarking, and capacity planning for evolving AI workloads and future-proof infrastructure designs.

Required Skills & Expertise:

•Proven experience designing and operating VXLAN EVPN-based data center networks.

•Strong knowledge of Cisco ACI, Nexus 9000, or Arista EOS platforms.

•Expertise in data center routing and switching, including BGP, OSPF, IS-IS, multicast, and fabric path.

•Deep understanding of AI-specific networking needs, including RoCEv2, DCB, PFC, and RDMA optimization.

•Hands-on experience with automation and orchestration tools such as Python, Ansible, and Terraform.

•Familiarity with GPU-accelerated workloads and distributed systems in AI/ML and HPC environments.

Preferred Qualifications & Certifications:

•CCNP or CCIE Data Center (highly preferred)

•Cisco Certified Specialist – Enterprise Core or Data Center Core

•Additional certifications in NVIDIA Networking (Cumulus/Spectrum) or Arista ACE are a plus

•Experience with hybrid and multi-cloud networking for AI clusters is desirable

We are a $13+ billion global technology company, home to more than 224,000 people across 60 countries, delivering industry-leading capabilities centered around digital, engineering, cloud, and AI, powered by a broad portfolio of technology services and products.

HCLTech is a globally recognized leader in the Tech and IT industry, but we’ve never forgotten the startup mindset that got us here. We’ve always approached our work with an idea-first attitude because every one of our accomplishments —no matter how big or small —can be traced back to an idea’s single spark.

It’s that spark —that inner drive —that sets our people apart from our competitors. It enables us not just to pull off game-changing feat after game-changing feat but to better our world in the process. We want you to find your spark. Because that’s what drives you to be better, be more and ultimately, be more fulfilled.

Position: - Network Consulting Engineer – VXLAN & AI Data Center Networking

Location- London, UK

Job Type- FHybrid

Full time Employment - Permanent

Role Overview:

We are seeking a highly skilled Network Consulting Engineer (NCE) to design and implement next-generation VXLAN EVPN-based data center networks that support hypercomputing and AI infrastructure. This role is central to enabling the high-performance, low-latency environments required for multi-GPU clusters, distributed training pipelines, and scalable AI workloads.

The ideal candidate will bring deep expertise in VXLAN, BGP, EVPN, RoCEv2, and fabric-based networking, along with a solid understanding of the networking demands of large-scale AI and HPC environments.

Key Responsibilities:

•Design, deploy, and manage VXLAN EVPN-based fabric networks supporting AI and high-performance computing workloads.

•Build scalable spine-leaf architectures using Cisco Nexus 9000 or Arista switches, ensuring efficient Layer 2/Layer 3 segmentation and workload mobility.

•Optimize network performance for RoCEv2, GPUDirect, and low-latency traffic flows, ensuring maximum throughput and minimal jitter for GPU-accelerated clusters.

•Configure underlay and overlay protocols including BGP, OSPF, IS-IS, and troubleshoot connectivity and control-plane issues.

•Integrate data center fabric with virtualization platforms such as VMware NSX, KVM, and Hyper-V, as well as Kubernetes-based AI infrastructure.

•Collaborate with compute, storage, and DevOps teams to ensure end-to-end performance across AI training, fine-tuning, inference, and ETL pipelines.

•Drive network automation efforts using tools such as Python, Ansible, and Terraform, enabling Infrastructure-as-Code (IaC) for repeatable, scalable deployments.

•Participate in performance tuning, benchmarking, and capacity planning for evolving AI workloads and future-proof infrastructure designs.

Required Skills & Expertise:

•Proven experience designing and operating VXLAN EVPN-based data center networks.

•Strong knowledge of Cisco ACI, Nexus 9000, or Arista EOS platforms.

•Expertise in data center routing and switching, including BGP, OSPF, IS-IS, multicast, and fabric path.

•Deep understanding of AI-specific networking needs, including RoCEv2, DCB, PFC, and RDMA optimization.

•Hands-on experience with automation and orchestration tools such as Python, Ansible, and Terraform.

•Familiarity with GPU-accelerated workloads and distributed systems in AI/ML and HPC environments.

Preferred Qualifications & Certifications:

•CCNP or CCIE Data Center (highly preferred)

•Cisco Certified Specialist – Enterprise Core or Data Center Core

•Additional certifications in NVIDIA Networking (Cumulus/Spectrum) or Arista ACE are a plus

•Experience with hybrid and multi-cloud networking for AI clusters is desirable

CNI Network Administrator - 6 months - Hybrid (Wokingham) - Inside IR35

We are seeking a skilled CNI Network Administrator to join our team on a full-time basis , working 3 days per week on-site in Wokingham and 2 days remotely . In this role, you will be responsible for the administration of critical network infrastructures, including LAN, WAN, intranets, and CNI/SCADA systems.

Key Responsibilities:

• Analyse organizational IT infrastructure needs, design network architecture (LAN, WAN, intranets, SCADA/CNI), and present solutions to management.
• Assess network traffic, capacity, and speed requirements; recommend load balancing, segmentation, and optimization strategies.
• Identify, configure, and maintain required hardware (Routers, Switches, Firewalls) and software (drivers, VPNs, DNS).
• Implement and monitor network security measures, ensure compliance with audit standards, policies, and government regulations (ISO, CNI, SCADA, cybersecurity protocols).

What You Will Ideally Bring:

• Active SC Clearance
• Proven expertise in deploying and administering LAN, WAN, intranets, and critical CNI/SCADA networks.
• Strong knowledge of TCP/IP, IPv6, DNS, VPNs, Firewalls, load balancers, and segmentation.
• Deep understanding of network security principles, compliance frameworks, and regulatory requirements.
• Strong track record in installation, configuration, and operational support of network hardware/software.

Contract Details:

• Duration: 6 months (view to extend)
• Day Rate: Up to £400 per day (Inside IR35)
• Location: 3 days on site (Wokingham)
• Start Date: ASAP

Network Engineer - 24/7 - £30,000 to £7,500 - onsite

Belfast client are looking to add a Network Engineer/NOC Engineer to their 24/7 team.

With solid hands-on experience across Cisco and Juniper networking, and ideally Adtran too you'll be working on high-availability LAN/WAN environments, Firewall management, and network optimisation for a forward-thinking business.

What you'll need:

• Proven network engineering experience or IT Helpdesk background.
• Ideally strong skills in Cisco & Juniper (routing, switching, security).
• Adtran exposure highly advantageous.
• Worked within an ITIL environment
• Enterprise network support a plus
• Windows OS and server support

For more information on this 24/7 opportunity in Belfast please contact (see below)

Network Engineer - 24/7 - 0,000 to 7,500 - onsite

Are you an aspiring IT Network Technician looking to start your career with a well-established and evolving company?

Fourteen IP are specialist Voice and Data Solutions providers focused on providing service, support, and solutions for the Hospitality industry right across the UK, Europe, Middle East, and Africa. They work with best-of-breed partners such as HP, Mitel, Broadsoft, Motorola, Ruckus a

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