Lead Designer - IP/MPLS Routing & Data Networking (BTN, GE, SDH/PDH/FOTS) Department Engineering - Telecommunications (S&T;) / Telecom Design Reporting To Engineering Manager / Lead Telecom Architect Job Summary The IP/MPLS Routing & Data Networking Designer is responsible for the design, engineering, configuration strategy, and implementation support of IP/MPLS-based communication networks for railway, transportation, metro, Semi high speed and High-speed rail Projects and critical infrastructure projects that involves supporting the FRMC S5G Radio System backbone. The role involves developing network architectures, routing designs, redundancy schemes, cybersecurity-compliant solutions, and technical documentation to ensure high availability, scalability, and reliability of operational and enterprise communication systems.

Key Responsibilities Network Design & Engineering Develop end-to-end IP/MPLS network architectures for railway and infrastructure projects.

Design Layer 2 and Layer 3 network topologies including:

Core networks

Distribution networks

Access networks

Data center connectivity

Prepare routing and switching designs using industry best practices.

Design high-availability and resilient network solutions with redundancy mechanisms.

IP/MPLS & Routing Design Design and document:

MPLS

MPLS-TP

Segment Routing (SR-MPLS) (where applicable)

VPN services (L2VPN/L3VPN)

Configure and validate routing protocols:

OSPF

IS-IS

BGP

Static Routing

Develop QoS strategies for mission-critical applications.

Define traffic engineering and bandwidth management requirements.





Data Networking Design Ethernet-based communication systems.

Define VLAN, VRF, subnetting, and IP addressing plans.

Develop network segmentation and security zoning.

Ensure integration of telecom subsystems such as:

SCADA

CCTV

PA/PIDS

AFC

Signalling systems

Data centres

Technical Documentation Prepare

Network Design Documents (NDD)

Detailed Design Documents (DDD)

Interface Control Documents (ICD)

Method Statements

Configuration Guidelines

FAT/SAT Procedures

Develop network schematics, routing diagrams, and rack layouts.

Testing & Commissioning Support Support Factory Acceptance Tests (FAT).

Support Site Acceptance Tests (SAT).

Review routing tables, failover testing, and performance results.

Participate in troubleshooting and root-cause analysis activities. Cybersecurity & Compliance Implement network security best practices.

Support compliance with

IEC 62443

ISO 27001

NIST Cybersecurity Framework

Design secure remote access and network access controls.

Stakeholder Coordination Collaborate with:

Signalling teams

Telecom teams

System integrators

Customers and consultants

Review vendor proposals, technical submittals, and design deliverables.

Required Qualifications Bachelor's Degree in:





Telecommunications Engineering

Electronics & Communication Engineering

Computer Science /Information Technology

Experience 10–15 years of experience in IP/MPLS and data networking design.

Experience in railway, metro, transportation, utility, or critical infrastructure projects preferred.

Experience with major vendors such as:

Cisco

Nokia

Juniper

Huawei

Alcatel-Lucent

Technical Skills Mandatory IP/MPLS Network Design

OSPF

IS-IS

BGP

MPLS L2VPN/L3VPN

Ethernet Networking

VLAN and VRF Design

QoS Design

TCP/IP Protocol Suite

Network Redundancy and High Availability Preferred Segment Routing (SR-MPLS)

MPLS-TP

SDN Solutions

IPv6

Network Management Systems (NMS)

Cybersecurity for Critical Infrastructure

Data Center Networking Certifications (Preferred) CCNP Enterprise

CCIE Enterprise Infrastructure

Nokia NRS I / NRS II

JNCIP-SP / JNCIE-SP

ITIL Foundation

IEC 62443 Cybersecurity Certification Key Competencies Network Architecture Design

Analytical Problem Solving

Technical Documentation

Design Review & Verification

Stakeholder Management

Communication Skills

Team Collaboration

Project Delivery Focus Deliverables High-Level Design (HLD)

Low-Level Design (LLD)

IP Addressing Plan

Routing Design Documents

MPLS Design Documents

Network Topology Diagrams

Redundancy and Failover Strategy

FAT/SAT Reports

As-Built Documentation Location: Faridabad – Delhi NCR Employment Type: Full time Level: Designer / Senior Designer / Lead Designer (depending on experience)

📌 Engineering Manager -IP-MPLS Data Networking system (Faridabad)
🏢 Larsen u0026 Toubro
📍 Faridabad