Network Operation Support L2/L3

HCL Technologies Limited; Greater London; Hybrid; GBP 70,000 - 110,000; Full time

Job summary

HCL Technologies Limited in London seeks a Network Consultant to design, implement, and troubleshoot complex enterprise networks. You will manage routing protocols, VLAN/VPCs, and VPN technologies while coordinating incident response and transformations.

The role requires strong vendor certifications and hands-on leadership in a global, client-focused environment. The position offers hybrid work at client sites, opportunities to advance in networking, security, and cloud connectivity through

Qualifications

• Design and operate enterprise networks.
• Lead routing and datacenter projects.
• Coordinate VPN and security policies.

Responsibilities

• Design, implement, and troubleshoot complex enterprise networks.
• Manage and support routing protocols (BGP, OSPF, EIGRP, MPLS).
• Conduct datacenter migrations and VLAN/VPC management.
• Design Site-to-Site IPSEC VPNs and troubleshoot security tunnels.
• Lead Major Incident investigations and RCA.
• Drive network modernization and cloud connectivity projects.

Skills

BGP

OSPF

EIGRP

MPLS

VRF

PBR

Education

CCNP Enterprise

CCNP Security

CCIE Security

AWS Advanced Networking Specialty

Tools

Wireshark

ThousandEyes

NetFlow

Job 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.

To learn more about how we can supercharge progress for you, visit www.hcltech.com

Job Title: Network Consultant

Location: London, Uk (Hybrid mode at client location)

Role Summary:

Routing & Switching

• Design, implement, and troubleshoot complex enterprise networks.
• Manage and support routing protocols including:
• BGP
• OSPF
• EIGRP
• Static Routing
• Route Redistribution
• Analyze routing issues and optimize network convergence and performance.
• Configure and troubleshoot ACLs, route maps, policy-based routing, and QoS.

Datacenter Network Operations

• DCNM / NDFC
• VXLAN EVPN
• Perform datacenter migrations, refreshes, and transformation activities.
• Manage VLANs, VPC, STP, RSTP, MST, Port Channels, and multicast technologies.
• Provide expertise in Layer 2 and Layer 3 datacenter troubleshooting.

IPSEC & VPN Technologies

• Design and support Site-to-Site IPSEC VPN solutions.
• Troubleshoot:
• Phase 1 (IKE)
• Phase 2 (IPSEC)
• Routing over VPN tunnels
• Support:
• GRE over IPSEC
• DMVPN
• Extranet Connectivity
• B2B VPN Integrations
• Coordinate with firewall teams for VPN implementation and troubleshooting.

Incident & Problem Management

• Act as L3 escalation point for critical incidents and major outages.
• Lead RCA investigations and corrective actions.
• Provide technical leadership during Severity-1 incidents.
• Reduce recurring incidents through automation and process improvements.

Change & Project Delivery

• Evaluate and implement complex infrastructure changes.
• Participate in CAB reviews and risk assessments.
• Drive network modernization and cloud connectivity projects.
• Develop implementation plans, rollback strategies, and validation procedures.

Automation & Documentation

• Create SOPs, KT documents, and architecture diagrams.
• Leverage automation tools and scripting where applicable:
• Python
• Ansible
• Terraform
• Maintain network standards and governance documentation.

Required Technical Skills

Routing

• BGP
• OSPF
• EIGRP
• MPLS
• VRF
• Policy Based Routing (PBR)

Datacenter

• VXLAN EVPN
• VPC
• STP/RSTP/MST

VPN & Security

• IPSEC VPN
• IKEv1 / IKEv2
• DMVPN
• SSL VPN
• Route-based and Policy-based VPNs

Monitoring & Troubleshooting

• Wireshark
• Cisco ThousandEyes
• NetFlow
• SNMP
• AWS Direct Connect

Certifications (Preferred)

• CCNP Enterprise
• CCNP Security
• CCIE Security
• AWS Advanced Networking Specialty

Soft Skills

• Strong customer and stakeholder management
• Major Incident Leadership
• Problem-solving and analytical mindset
• Mentoring and coaching L1/L2 engineers
• Network Availability > 99.9%
• SLA Compliance
• Reduction in Incident Recurrence
• Successful Project Delivery
• Timely RCA Completion
• Improved Network Security and Operational Efficiency
• A supportive, diverse, and global team with a brilliant culture.
• Competitive compensation and benefits that includes 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.