Network Security Consultant

CompanyHCLTech

LocationLondon Area, United Kingdom

Posted At3/6/2026

UK Visa Sponsorship Analytics

Occupation Type

Cyber security professionals

Occupation Code Skill LevelHigher Skilled

Sponsorship Salary Threshold

£48,500 (£24.87 per hour)

Occupation rate applies

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Description

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.

Role definition

We are seeking a Level 3 Network Security Engnieer high‑severity, complex, and business‑critical incidents Cisco Routing ,Switching , Firewalls & Wireless

ROLES AND RESPONSIBILITIES

Configuring and troubleshooting the Cisco Routing ,Switching , Firewalls & Wireless
Ability to implement and administer the network devices(e.g., routers, switches , wireless & firewalls )
Perform network maintenance and Device upgrades including patches, hot fixes and security configurations.
Must be open for 16x5 environments (US shifts).
Monitor performance and ensure devices availability and reliability.
Monitor system resource utilization, trending, and capacity planning.
Provide Level-3 support and troubleshooting to resolve issues.
Work within established configuration and change management policies to ensure awareness, approval and success of changes made to the network infrastructure.
Liaise with vendors and other IT personnel for problem resolution.
On-call support during the Weekdays and Weekends
Managing the Ip addresses and Resolving Conflicts
Experience in the use of network Monitoring tools
Support in DR tests/failover from WAN perspective.
Providing network engineering support and training to other team members.
Ability to manage the devices through Cisco Prime Infrastructure

Managing the DNS Records with third party Vendor

Managing and updating the CMDB on Snow

Minimum 7-8 years of experience in BGP, OSPF, and EIGRP protocols.

Extensive knowledge of LAN and WAN technologies

Hands-on experiences in Data Centre switching, routing, and overlay technologies.

Excellent Exposure to current Leaf>Spine>Leaf architectures, validated designs, and methodologies.

Excellent knowledge of dynamic routing protocols Eigrp, OSPF, iBGP, eBGP.

Excellent exposure to Nexus 2/3/5/7/9K platforms

Excellent exposure to DNS, DHCP & IPAM.

Strong Experience in managing & troubleshooting Nexus/cisco switches with FEX, VPC, VXLAN, VDC's etc.

Experience in security related fields (firewalls, VPN, network access control) Palo Alto, Cisco ASA, CISCO FTD, FMC.)

Experience with Routers, switches, HSRP, VRRP & GLBP redundancy protocols, Firewalls

Strong troubleshooting skills by providing support for any network & security related issues

Experience in monitoring tools like Solar Winds, thousand eye

Experience in Infoblox.

Experience in Wifi products such as cisco, extreme, Nsight, Juniper-mist.

Experience in Load balancers such F5(LTM, GTM)

Benefits

A supportive, diverse, and global team with a brilliant culture.
Competitive compensation and benefits that includes up to 20 days’ vacation per year, various insurances like Term life and Business Travel insurance. These are apart from the statutory benefits applicable in the country. Employee benefits are regulated by an internal policy that contains full details regarding the entitlement and conditions for the benefits as per the law of the land.
Great opportunities to make the role your own, upskill yourself and get involved with exciting projects.
Total Wellbeing is our focus. Alongside your professional excellence, you join the likeminded colleagues to create a larger impact within the company and society at large in your chosen area of passion - CSR Council, Diversity Council, Women Connect, Sparks – Engagement Champion to name a few.
To know more about us visit – www.hcltech.com
For more information on how we process your personal data, please refer to HCLTech’s Candidate Data Privacy Notice.