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Senior Network Security Engineer_ACI

Malomatia39 open roles

Where
Doha, Qatar
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Your applicationOpen nowSenior Network Security Engineer_ACIMalomatia · Doha, Qatar

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The clock on this job

Early applications get read.

13.9% of postings close within 7 days. Measured by our own scanner across the market. Malomatia postings stay open a median of 22 days.

Share of postings closed within
  1. 2.2%1 day
  2. 4.7%3 days
  3. 13.9%7 days
  4. 22.4%14 days
  5. 38.1%30 days
  6. 59.0%60 days
This job: posted today

Malomatia median: 22 days open

The posting

Job Description

The Senior Network Engineer is responsible for the design, operation, and support of enterprise network and data center environments, with a strong focus on Cisco ACI, Software-Defined Access (SDA), and network security operations. The role provides Level 3 support, ensures service availability, leads incident and change activities, and acts as a Subject Matter Expert (SME) for network and security technologies.

Responsibilities

ACI Operations & Device Management • Manage and operate Cisco ACI fabric, including APIC controllers, Spine, and Leaf switches. • Provide Level 3 (L3) support for Cisco ACI and Cisco SDA in an enterprise data center environment. • Perform day-to-day monitoring of fabric health, faults, events, and performance. • Ensure high availability, stability, and optimal performance of the ACI fabric. • Troubleshoot fabric faults, health score degradation, endpoint learning, and policy issues.

Configuration & Change Management • Configure and manage tenants, VRFs, Bridge Domains (BDs), EPGs, contracts, filters, and application profiles. • Implement L2/L3 connectivity, L3Out, vPC, and port-channel integrations. • Execute approved change requests in line with change management and ITIL processes. • Support ACI upgrades, patching, maintenance windows, and lifecycle management. • Perform fine-tuning and optimization of network devices across data centers, campus, and branch networks.

Incident, Problem & Service Management • Drive and manage security incidents, changes, and problems assigned to the Network Security Operations Team. • Perform root cause analysis (RCA) and implement corrective and preventive actions. • Ensure escalated incidents and service requests are resolved within defined SLAs/OLAs. • Resolve ticket-based requests in compliance with priority and SLA commitments. • Provide after-hours and on-call support for incidents, changes, and maintenance activities.

Enterprise Network & Security Operations • Configure, maintain, and support core switches, routers, firewalls, and access switches. • Handle day-to-day Network & Security operations, beyond ACI when required. • Support Systems, Virtualization, and Application teams for network-related issues. • Provide advanced troubleshooting support to branch IT technicians. • Work closely with NOC/SOC, server, virtualization, and application teams during incidents.

Governance, DR & Documentation • Act as a Subject Matter Expert (SME) for network and security technologies and project implementations. • Develop, maintain, and improve network SOPs, operational runbooks, and incident playbooks. • Plan, implement, and test Disaster Recovery (DR) and Business Continuity Plans (BCP), leading recovery efforts when required. • Create and maintain network inventory, topology diagrams, and technical documentation.

Vendor & Stakeholder Coordination • Coordinate with vendors and technology partners, including raising TAC cases and driving issues to closure. • Support device upgrades, replacements, migrations, data center moves, and new technology implementations. • Travel to client sites and data centers for installations, troubleshooting, audits, and migration activities. • Coordinate and support site visits across multiple locations as per SLA and project requirements

Standards & Compliance • Follow ITIL best practices for incident, change, and problem management. • Apply information security best practices across ACI, routing, switching, and network security operations. • Ensure network controls, policies, and procedures operate effectively and are continuously improved.

Qualifications

• Bachelor’s degree in relevant discipline. 10+ years of relevant full-time experience in enterprise network environments. • Relevant certifications: CCNP / CCIE (preferred). • ITIL certification or strong ITIL process knowledge. • Experience working in Network Operations Centers (NOC) supporting large enterprise or multi-national clients. • Excellent written and verbal communication skills with the ability to articulate technology strategy and operational risk.

Application Centric Infrastructure (ACI) • Hands-on experience in support, administration, installation, and upgrades of ACI environments. • Experience designing and building SDN-based data center networks using Cisco ACI, VMware NSX, and • OpenFlow-based solutions. • Secure onboarding of workloads using EPGs, contracts, filters, and L2Out/L3Out. • Integration of Cisco ACI with VMware NSX, including HCI/VxRail/VVD (Dell/EMC). • Configuration, testing, and validation of DR capabilities in multi-pod ACI architectures. • End-to-end knowledge of ACI firmware upgrades. • Troubleshooting ACI infrastructure and interoperability with traditional networks. • Knowledge of ACI Multi-Pod, Multi-Site, and Policy-Based Routing (PBR) is an advantage.

Software Defined Access (SDA) & ISE • Design, operation, and support of Cisco SDA campus networks. • Operate and maintain SDA fabric, including Edge, Border, Control Plane, DNAC, and ISE integration. • Implement and tune NAC policies using Cisco ISE, including IoT onboarding. • Monitor wired and wireless performance using SDA telemetry. • Troubleshoot SDA wired and wireless connectivity and performance issues. • Enforce security using TrustSec SGTs through ISE integration. • Plan and support IPv6 adoption as part of enterprise IP strategy. Routing & Switching • Design and support large LAN and WAN environments, including VXLAN architectures. • Expertise in routing protocols: OSPF, EIGRP, BGP. • Extensive hands-on experience with Nexus, Catalyst, ISR/ASR routers, and Wireless LAN. • Strong understanding of VXLAN, Anycast Gateway, and data center routing designs.

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