Senior IT Infrastructure Engineer (network)
Job Description
Job ID - 36501
Function - DIO
Job location - Gurgaon/Bangalore
Job Type - Permanent
Why we need this role
We are seeking a Senior IT Infrastructure Engineer (Network) to act as a technical Subject Matter Expert (SME) across enterprise network services, supporting office, data centre, and hybrid cloud networking environments.
This is a hands-on engineering role focused on delivering resilient, secure-by-design, and high-performance network platforms using predominantly Cisco technologies, with exposure to Juniper and cloud-native networking. The role will be critical in ensuring network segmentation, security, and scalability across the organisation’s global infrastructure
What you will do
Act as a technical SME for network infrastructure, including:
Office / campus networks, Data centre networking, Hybrid cloud connectivity (Azure, GCP)
Design, implement, and support secure, scalable network solutions across:
LAN / WAN / Data Centre / Cloud
Own and optimise Cisco-based network platforms, including:
Routing and switching, Cisco ACI (Application Centric Infrastructure), Policy-driven segmentation
Support and manage F5 load balancing platforms, including:
LTM configuration and optimisation, Traffic management and application delivery, High availability and failover design
Deliver secure-by-design network architecture, including:
Network segmentation and micro-segmentation, Zero Trust principles, Alignment to enterprise security controls
Design and support hybrid networking solutions, including:
Connectivity to Azure and GCP
VPN and private connectivity models (e.g. ExpressRoute, Interconnect)
Troubleshoot and resolve complex network incidents and performance issues across multi-layer environments
Drive network automation and standardisation to improve operational efficiency
Produce and maintain high-quality network documentation, including:
High-level and low-level designs, Network diagrams, Runbooks and operational procedures, Configuration standards
Collaborate with:
Security teams (segmentation, network security controls)
Cloud engineering teams
Platform and infrastructure teams
Participate in the on-call rota to support critical network incidents
What we're looking for
Required Skills & Experience
Strong hands-on experience with:
Cisco networking technologies (core requirement)
Data centre networking and Cisco ACI
F5 load balancing platforms
Experience with:
Juniper networking technologies (desirable)
Hybrid cloud networking (Azure and/or GCP)
Deep knowledge of:
Network segmentation and secure network design
Routing and switching protocols (e.g. BGP, OSPF)
Layer 4–7 load balancing concepts
High availability and resilient design
Proven ability to design, implement, and support enterprise-scale network environments
Strong troubleshooting experience across:
LAN
WAN
Data centre fabric
Hybrid cloud connectivity
Shape
✅ Technical Competencies
Recognised as a network SME within the team
Ability to lead complex technical delivery and problem resolution independently
Strong understanding of:
Secure-by-design networking
Network segmentation strategies (macro and micro segmentation)
High availability, resilience, and fault tolerance
Hands-on experience implementing and operating Cisco ACI environments
Ability to contribute to design decisions in partnership with architecture teams
✅ Behavioural & Professional Skills
Ownership & Accountability: Takes responsibility for network stability, performance, and security
Technical Leadership: Influences engineering standards and solutions without direct line management
Security Focus: Embeds secure-by-design principles into all network solutions
Collaboration: Works effectively across infrastructure, security, and cloud teams
Communication: Clearly articulates technical concepts and designs
Continuous Improvement: Drives optimisation, automation, and simplification initiatives
✅ Preferred Qualifications
Certifications such as:
Cisco (CCNP / CCIE)
F5 certifications
Cloud networking certifications (Azure / GCP)
Exposure to:
Network automation tools (Ansible, Terraform, etc.)
Container networking and modern application delivery