Senior Network Specialist

L&T Technology Services Ltd.; Mumbai; On-site; INR 2,500,000 - 4,000,000; Full time

Job summary

Larsen & Toubro Limited in Mumbai is seeking a seasoned Network & Datacenter lead to drive transformation projects and manage the corporate datacenter network infrastructure, including WAN, LAN, and ISP relationships.

The role requires 5+ years in enterprise datacenters, expertise in Cisco ACI, routing, switching, security, ITIL/ISO 27001, and a proven ability to lead cross-functional teams while delivering on SLA targets.

Qualifications

• Minimum 5+ years of experience in Enterprise Datacenter environments.
• Hands-on routing and switching experience, preferably Cisco.
• Experience with firewalls and load balancers; ISP governance.
• Strong knowledge of Cisco ACI, Wi‑Fi, and related datacenter tech.
• Familiarity with ITIL and ISO 27001 security standards.
• Certifications in Networking/Datacenters preferred (CCNP/CCIE, etc.).

Responsibilities

• Lead transformation and implementation projects for Datacenter Networking.
• Ensure robust WAN/LAN/P2P/Links to support business needs.
• Collaborate with IT operations and business teams to meet SLAs/OLAs.
• Manage ISP relationships and governance, aiming for cost efficiency.
• Mentor networking professionals and drive continuous improvement.
• Uphold security by design and ensure ISO27001 compliance.

Skills

Cisco ACI

Routing

Switching

Wi‑Fi

ITIL

ISO 27001

Security audits

Leadership

Vendor management

Education

Bachelor’s degree in IT / Computer Science / Electronics

Tools

F5 / Load balancers

Job description

• Network Management for Datacenter & Locations (Campus, Branch Office, Yards, etc.)
• Lead transformation and implementation projects for various L&T businesses with a strong focus on Datacenter Networking, including Cisco ACI, Routing, Switching, and Wi-Fi technologies.
• Ensure a robust and scalable WAN, LAN, P2P, and Link infrastructure to support the diverse needs of L&T’s businesses.
• Collaborate with multiple IT operations and business teams to ensure SLA/OLA commitments are met and consistently exceed customer expectations.
• Identify and implement optimized, cost-effective solutions to meet business requirements while managing network procurement for the Corporate Datacenter.
• Lead and mentor a team of networking professionals in a dynamic environment, ensuring timely resolution of issues and continuous improvement in service delivery.
• ISP Management
• Drive governance and performance management across multiple ISP partners to ensure a robust and reliable link infrastructure with adherence to SLAs.
• Innovate to maximize the value of investments in ISP services and optimize the cost of doing business.
• Ensure accurate invoicing from ISP partners and explore opportunities to automate billing processes for efficiency.

2.2 Network Security

Champion the ‘Secure by Design’ principle by ensuring all network implementations conform to security guidelines and leverage innovative, out-of-the-box solutions.

2.2.1 Act as a bridge between Operations and Security teams to ensure security is embedded in every aspect of IT systems.

• Drive governance across technical and business teams to ensure optimized utilization of Datacenter equipment.
• Enforce strict adherence to hardening guidelines, review SOPs and architectures, and identify opportunities for improved security and performance.
• Serve as the Single Point of Contact (SPOC) between the Operations Team and Internal/External Auditors, ensuring timely closure of audit observations.

2.3 Datacenter Operations

2.3.1 Oversee the operations of Corporate Datacenters across critical locations, ensuring 24x7 availability and reliability.

2.3.2 Innovate to ensure sustainable Datacenter operations while adhering to Environment, Health, and Safety (EHS) norms.

2.3.3 Ensure the physical and logical security of Datacenters hosting critical business information for L&T.

3.2 Professional Experience

3.2.1 Minimum 5+ years of experience in an Enterprise Datacenter setup with hands-on expertise in:

3.2.2 Routing and Switching (Cisco preferred).

3.2.4 Firewalls and Load Balancers.

3.2.5 ISP relationship management and governance.

3.3 Technical Skills

3.3.1 Strong knowledge of Cisco ACI, Routing, Switching, and Wi-Fi technologies.

3.3.2 Familiarity with ITIL and ISO 27001 standards is mandatory.

3.3.3 Exposure to security audits and ISO compliance processes.

3.3.4 Knowledge of Virtualization, Active Directory, Databases, and Azure is an added advantage.

• Certifications

3.4.1 Certifications in Networking and Datacenter technologies are highly preferred(e.g., CCNP, CCIE, Cisco ACI Specialist, VMware VCP, etc.).

3.5 Soft Skills

3.5.1 Strong leadership and team management skills.

3.5.2 Excellent communication and collaboration abilities to work with cross-functional teams.

3.5.3 Analytical mindset with a focus on problem-solving and innovation.

3.5.4 Ability to manage multiple priorities in a fast-paced environment.

4.0.1 Ensure 100% uptime for Datacenter and network infrastructure.

4.0.2 Drive successful implementation of transformation projects within defined timelines and budgets.

4.0.3 Maintain compliance with ITIL and ISO 27001 standards.

4.0.4 Optimize network performance and reduce operational costs through innovative solutions.

4.0.5 Ensure timely closure of audit observations and adherence to security guidelines.