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Network Engineering Specialist – Cisco ACI

Moulmein-Kallang, Central Singapore, Singapore
Posted on: 07-03-2025
Job description

Job Requirements:

Preferred qualifications :

Education:

  • Bachelor’s or Master’s degree in Computer Science, Information Technology, or related field.
  • Cisco certifications : CCIE Datacenter, Enterprise , CCNP Data Center ACI specialization preferred.

Technical Expertise:

  • 10 to 15 years of experience in Cisco Network technologies , with at least 3+ years focused on Cisco ACI.
  • Deep knowledge of Cisco ACI components and concepts, including:
  • Fabric Architecture: Spine-Leaf topology, Fabric Discovery, and Fabric Access Policies.
  • Application Policy Infrastructure Controller (APIC): Clustering, APIs (REST, XML, JSON), and GUI management.
  • Endpoint Groups (EPGs), Contracts, and Filters: Policy-based connectivity and segmentation.
  • Tenant Model: VRFs, Bridge Domains, and Layer 2/3 connectivity across multiple tenants.
  • ACI Multi-Site and Multi-Pod deployments.
  • Integration with L4-L7 services (e.g., firewalls, load balancers) using Service Graphs.
  • Expertise in ACI troubleshooting: Health Scores, Service Graphs, and CLI/APIC diagnostics.
  • Experience with Cisco Nexus Dashboard Insight for monitoring and managing ACI environments effectively.

VXLAN and EVPN Expertise:

  • VXLAN Fabric Architecture: Understanding of VXLAN encapsulation for scalable Layer 2 and Layer 3 networks.
  • MP-BGP EVPN (Ethernet VPN): Control plane for VXLAN, providing seamless Layer 2 extension and optimized Layer 3 routing.
  • Interoperability between ACI and non-ACI environments using VXLAN/EVPN.

BGP and OSPF Routing Expertise:

  • In-depth knowledge of BGP (Border Gateway Protocol) for managing external and internal routing policies.
  • Experience with BGP peering, route filtering, and path selection in complex ACI and datacenter environments.
  • Expertise in OSPF (Open Shortest Path First) for building dynamic Layer 3 routing in underlay networks.
  • Integration of BGP and OSPF within ACI fabric to manage hybrid cloud and multi-pod deployments.

Solution Architecture : (Nice-to-Have only )

  • Solution-level understanding of Cisco ACI interoperability with:
  • Firewalls (e.g., Palo Alto, Checkpoint , Fortinet).
  • Load Balancers (e.g., F5 GTM, LTM, ASM).
  • Micro-Segmentation solutions and policy enforcement.
  • IPAM, DNS, and DHCP systems.
  • Added advantage for candidates with hands-on experience integrating ACI with these solutions, though a willingness to learn and adapt to new technologies is acceptable.
  • Experience with Ansible, Python scripting, and ACI REST APIs for automation.
  • Knowledge of ACI App Center integrations and customization of ACI apps.
  • Experience with integrating ACI with multicloud environments (AWS, Azure, GCP).

 Key job details

Primary Location
Moulmein-Kallang, Central Singapore, Singapore
Job Type
Experienced
Years of Experience
5
Travel
No
Job Posting
07/03/2025

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