Senior Network Engineer (Cisco ACI)

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

Job summary

KRYJAS PRIVATE LIMITED in Singapore seeks a Senior Network Engineer to lead Cisco ACI design, deployment, and operations in large enterprise data centres.

You will work hands-on on ACI fabric, migrations, and complex troubleshooting, collaborating with security, server, cloud, and app teams to ensure resilient, scalable networking. Strong leadership and deep IP routing, VXLAN, BGP/OSPF, and automation skills are highly valued.

Qualifications

• 10+ years in enterprise networking with recent Cisco ACI experience.
• Cisco ACI is the primary must-have skill, with data centre networking and routing experience.

Responsibilities

• Design and deliver Cisco ACI-based data centre solutions, including fabric architecture and policy design.
• Implement hands-on ACI deployments, migrations, and production changes with strong planning and testing.
• Troubleshoot complex ACI and data centre network issues to ensure production stability.
• Collaborate with security, server, cloud, virtualization, and application teams for resilient, secure networks.
• Provide design guidance and root cause analysis as the ACI SME.

Skills

Cisco ACI design

Data centre networking

Network automation

Cloud networking

SDN/NFV

Security technologies

Network monitoring

Data center architecture

Load balancers

Tools

Ansible

Python scripting

Terraform

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, and network integration experience.
• Certifications: CCNP Data Center, Cisco ACI specialist certification, or CCIE preferred.
• Delivery: Able to own designs, lead implementations, manage production changes, and communicate clearly with technical and business stakeholders.
• Troubleshooting: Able to perform root cause analysis and resolve complex ACI and data centre network issues in production.
• Project Exposure: Experience delivering infrastructure projects, migrations, and controlled production changes end to end.