Data Center Engineer

ACL Digital; Gurugram District; On-site; INR 2,000,000 - 4,000,000; Full time

Job summary

ACL Digital is seeking a Data Centre Network Engineer for Gurgaon to design, implement, and manage complex data center networks. The role requires deep expertise in data center fabric, underlay/overlay routing, and hands-on experience across Cisco Nexus, ACI, Nokia gear, and SD-WAN platforms.

The candidate will lead transformational projects, support 24/7 network availability, and produce detailed LLDS and SOPs.

Qualifications

• 5–15 years of data center networking experience.
• Experience with Leaf-Spine, VXLAN EVPN.
• Experience in multi-vendor environments including Cisco, Nokia, and SD-WAN.
• Strong routing protocols: OSPF, BGP, IS-IS.
• Capacity planning and incident escalation in data centers.

Responsibilities

• Design and implement high-performance data center networks and Leaf-Spine topologies.
• Configure and troubleshoot core routing protocols across underlay/overlay.
• Deploy VXLAN EVPN fabrics and data center interconnects/gateways.
• Manage MPLS, L2VPN and L3VPN services across telco DC environments.
• Maintain Cisco Nexus series switches and Cisco ACI fabrics.
• Support Nokia gear, Meraki, or SD-WAN platforms.
• Perform capacity planning, traffic engineering, and Tier 2/3 escalation.
• Develop LLDs, SOPs, and network architecture documentation.
• Participate in maintenance windows and on-call rotations to ensure 24/7 availability.

Skills

OSPF & Routing

BGP & Border Routing

Data Center Fabric

VXLAN EVPN

Nexus 7000/9000

Nokia SR OS

SD-WAN

Education

Engineering Degree

Certifications (CCNP/CCIE/Nokia NRS)

Tools

Cisco Nexus (NX-OS)

Cisco ACI

Meraki

Nokia SR OS

Job description

Dear Job Seekers,

Greeting from ACL Digital We are hiring for Integration Telco Data Centre for Gurgaon Location.

Greetings from ACL Digital!

We are hiring for Integration Telco Data Centre for our Gurgaon client location.

• Job Title: Data Centre Network Engineer
• Location: Gurgaon / Manesar (Client Location)
• Experience: 5-15 Years
• Notice Period: Immediate to 60 Days(Immediate joiners will be preferred first)
• Work Mode: Work from office.

About the Role:

We are seeking a highly skilled and experienced Data Center Network Engineer to join our team at our client location in Gurgaon. The ideal candidate will possess deep expertise in data center fabric, underlay/overlay routing, and extensive hands-on experience in designing, implementing, and troubleshooting complex network infrastructures.

This role requires a strong command over routing and switching, network virtualization, Leaf-Spine architectures, VXLAN EVPN fabrics, and multi-vendor environments including Cisco (Nexus 7k/9k, ACI, Meraki), Nokia(Alcatel,7750,7705,7250,7205), or SD-WAN solutions.

Key Responsibilities:

• Design, implement, and maintain high-performance data center network infrastructures and Leaf-Spine topologies.
• Configure, optimize, and troubleshoot core routing protocols (OSPF, BGP, IS-IS) across underlay and overlay networks.
• Deploy, operate, and troubleshoot VXLAN EVPN fabrics, including VTEP encapsulation/decapsulation, ingress replication, and data center interconnects/gateways.
• Implement and manage MPLS, L2VPN, and L3VPN services across telco data center environments.
• Manage, configure, and maintain Cisco Nexus series switches (7000 & 9000 series) and Cisco ACI fabrics.
• Support integration and operations involving Nokia networking gear, Cisco Meraki, or SD-WAN platforms.
• Perform capacity planning, traffic engineering, and Tier 2/3 escalation support for mission-critical network incidents.
• Develop detailed low-level designs (LLD), standard operating procedures (SOP), and network architecture documentation.
• Participate in scheduled maintenance windows and on-call rotations to ensure 24/7 network availability.

Required Technical Skills & Competencies:

1. OSPF & Interior Routing (Underlay):

• OSPF Core Concepts: In-depth knowledge of SPF/Dijkstra algorithm, DR/BDR election process, router priorities, and interface states.
• Packet & Network Types: Deep understanding of OSPF packet types (Hello, DBD, LSR, LSU, LSAck) and network types (Broadcast, Point-to-Point, Non-Broadcast).
• LSA & Route Types: Thorough understanding of LSA Types (1 to 7), Intra-area, Inter-area (O IA), and External routes (E1/E2, N1/N2).
• Area Types & Flooding: Configuration and design of Backbone, Standard, Stub, Totally Stubby, NSSA, and Totally NSSA areas.
• Adjacency: Clear understanding of OSPF neighbor states (Down, Init, 2-Way, ExStart, Exchange, Loading, Full) and convergence troubleshooting.

2. BGP & Border Routing:

• BGP Fundamentals: Strong knowledge of BGP states, synchronization rules, message types (Open, Update, Notification, Keepalive), and finite state machine (FSM).
• eBGP vs. iBGP: Core architectural differences, split-horizon rules, next-hop processing, and TTL handling.
• Path Attributes & Best Path Selection: Granular understanding of Weight, Local Preference, AS-Path, Origin, MED, eBGP over iBGP, IGP metric, and tie-breaking algorithms.
• Scaling & Route Reflection: Practical experience with BGP Route Reflectors (RR), Cluster-ID, originator ID, and loop-prevention mechanisms.

3. Data Center Fabric, VXLAN & EVPN:

• Fabric Architecture: Deep understanding of 2-Tier/3-Tier Clos Leaf and Spine physical topologies, ECMP routing, and non-blocking fabric designs.
• VXLAN Fundamentals: Data-plane encapsulation/decapsulation, VNI (Layer 2 & Layer 3), UDP port 4789, and VTEP functionalities.
• VXLAN EVPN Control Plane: MP-BGP EVPN address family, NLRI route distribution (Route Type 1 to 5), and MAC-to-IP learning without data-plane flooding.
• Data Center Gateways & VPNs: Inter-subnet routing, Anycast Gateways, DCI (Data Center Interconnect), and operational differences between L2VPN vs. L3VPN architectures.

4. Hardware & Platforms:

• Cisco Ecosystem: Nexus 7000, 9000 series (NX-OS), Cisco ACI (APIC controller, EPGs, contracts, bridge domains), and Meraki.
• Alternative Vendor Platforms: Hands-on experience with Nokia Service Routers (SR OS) or SD-WAN solutions is highly preferred.
• Operational Readiness: Strong background in Tier 2/Tier 3 troubleshooting, packet captures, and high-availability design (VPC, LACP, BFD).

Education & Experience:

• Experience: 5 to 15 years of solid, relevant networking experience in Telco/Enterprise Data Centers.
• Education: B.Tech / B.E. / BCA / MCA / Diploma in Electronics, Telecommunications, Computer Science, or equivalent. 10+2+3(total 15 years education must be required)
• H rtifications (Preferred): CCNP (Data Center / Enterprise / SP), CCIE, or Nokia NRS I/II certifications will be an added advantage.H