Senior Network Engineer (Cisco ACI)

KRYJAS PRIVATE LIMITED; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

KRYJAS PRIVATE LIMITED is seeking a Senior Network Engineer to lead design, implementation, and support of enterprise and data centre networks, with Cisco ACI as the core skill. You will drive fabric architecture, policy design, and migrations in a hands-on role within a large enterprise environment.

The ideal candidate brings 10+ years of enterprise networking experience, strong Cisco ACI capabilities, and a proven track record delivering production changes and complex troubleshooting in data

Qualifications

• 10+ years in enterprise networking, with recent hands-on Cisco ACI design, implementation, and troubleshooting in data centers.
• Cisco ACI is the primary must-have skill, with strong data centre networking and routing/switching background.

Responsibilities

• Lead design and delivery of Cisco ACI-based data centre solutions, including fabric architecture and policy design.
• Deliver hands-on ACI implementations, migrations, and production changes with strong planning and execution.
• Troubleshoot complex ACI and data centre network issues to maintain production stability.
• Collaborate with security, server, cloud, and application teams to deliver resilient network solutions.
• Provide design guidance, root-cause analysis, and SME support to project/ops teams.

Skills

Cisco ACI

Data centre networking

Routing & Switching

VXLAN

BGP

OSPF

Security integration

Virtualization

Load balancer connectivity

Cloud Networking

Network Automation

SDN/NFV

Security technologies

Network monitoring

Data Center Architecture

Tools

Ansible

Python scripting

Terraform

SolarWinds

Wireshark

NetScout

Job description

Position details

The Senior Network Engineer will lead the design, implementation, and support of enterprise and data centre network solutions, with Cisco ACI as the primary skillset. This role is ideal for a hands-on engineer with strong experience delivering ACI designs, production implementations, migrations, and complex troubleshooting in large enterprise environments.

Roles and Responsibilities

This role requires strong real-world experience in Cisco ACI design, implementation, and troubleshooting.

• Design and Delivery : Lead the design and delivery of Cisco ACI-based data centre solutions, including fabric architecture, policy design, and integration with enterprise network services.
• Implementation and Migration : Deliver hands-on ACI implementations, migrations, and production changes with strong planning, testing, and execution discipline.
• Troubleshooting and Operations : Resolve complex ACI and data centre network issues, support production stability, and drive ongoing optimization across the environment.
• Stakeholder Collaboration : Work closely with security, server, cloud, virtualization, and application teams to deliver resilient, secure, and supportable network solutions.
• Technical Leadership : Serve as the ACI subject matter expert, providing design guidance, root-cause analysis, and support to project and operations teams.

Technical Capabilities

Cisco ACI Design and Implementation

• Strong hands-on experience designing and deploying Cisco ACI fabrics in enterprise data centre environments.
• Proven implementation experience covering new builds, migrations, policy changes, and production support.
• Strong troubleshooting skills across ACI policy, routing, fabric health, and application connectivity.
• Working knowledge of routing and switching, VXLAN, BGP, OSPF, security integration, virtualization, and load balancer connectivity.

Develop and Maintain Network Security Policies, Standards, and Procedures:

Develop network security policies that outline the organization's security objectives and requirements.

Establish security standards and procedures for configuring and managing network security devices.

Ensure that security policies, standards, and procedures are up to date and align with industry best practices and regulatory requirements.

Contribute into Risk Assessments and Security Audits:

Participate in regular risk assessments to identify potential security vulnerabilities and threats.

Contribute to security audits to assess the effectiveness of existing security controls and identify areas for improvement.

Recommend security enhancements based on the findings of risk assessments and audits.

Collaborate with IT Teams:

Work closely with IT teams to integrate requirements into network infrastructure and applications.

Provide guidance on implementing best practices and standards.

Collaborate with application developers and system administrators to ensure that business requirements are met.

Enhance Network Traffic Monitoring and Innovate Automations:

Enhance network traffic monitoring to effectively detect issues.

Take appropriate actions to mitigate the impact of incidents and prevent future occurrences.

Look for predictive analysis/solutions.

Provide Technical Guidance and Support:

Provide technical guidance and support to IT teams on network best practices.

Assist in troubleshooting network Problems and coming up with solutions to address them.

In-depth insight and oversight on Networking Protocols : Expertise in IP networking protocols (e.g., BGP, OSPF, MPLS, VLANs, IPsec, TCP/IP, QoS) and related technologies.

Cloud Networking : Hands-on experience with cloud networking in platforms such as AWS, Azure, and Google Cloud, including hybrid cloud designs and integrations.

Network Automation : Knowledge of network automation tools (e.g., Ansible, Python scripting, Terraform) to automate configuration, deployment, and management processes.

Virtualization : Experience with network virtualization technologies such as SDN (Software-Defined Networking) and NFV (Network Function Virtualization).

Security Technologies : Proficient in network security technologies like firewalls (FortiGate, Checkpoint, Juniper SRX & Cisco Firewalls), VPNs, IDS/IPS, DDoS protection, and identity access management (IAM).

Network Monitoring : Familiarity with network monitoring tools (e.g., SolarWinds, NetScout, Wireshark) for performance and anomaly detection.

Data Center Architecture : In-depth understanding of data center networking (e.g., spine-leaf, fabric architectures) and cloud connectivity, ACI.

Load Balancers : F5 (GTM/LTM), Citrix ADC etc.

Job Requirements

• Experience : 10+ years in enterprise networking, including strong recent hands-on Cisco ACI design, implementation, and troubleshooting experience in data centre environments.
• Core Skillset : Cisco ACI is the primary must-have skill, supported by strong data centre networking, routing and switching, a