Cloud Network Engineer - L3

HCL Technologies Limited; Singapore; On-site; SGD 120,000 - 160,000; Full time

Job summary

HCL Technologies Limited seeks a senior cloud networking expert to provide SME-level guidance on AWS networking, hybrid connectivity, and modernization programs. You will lead architecture, operations, and incident resolution, ensuring high availability and security across enterprise cloud networks.

You will drive automation, observability, and continuous service improvement, collaborating with Security, Infrastructure, and Operations teams to deliver scalable cloud network services in a complex

Qualifications

• Bachelor's Degree in Computer Science, Information Technology, Electronics & Engineering or related discipline.
• 10+ years of experience in Enterprise Networking.
• Minimum 5+ years of hands-on experience in AWS Cloud Networking.
• Experience managing large-scale enterprise cloud environments.
• Strong experience with hybrid cloud connectivity and data center integration.
• Experience supporting mission-critical production environments.
• Experience in Managed Services and ITIL-based operational environments.
• Strong troubleshooting experience across cloud, network, and security domains.
• Experience driving cloud transformation and modernization initiatives.
• Experience with automation, Infrastructure-as-Code, and cloud operations.

Responsibilities

• Manage and support AWS cloud networking services including VPCs, Subnets, Route Tables, Transit Gateway, VPC Peering, Direct Connect, VPN, and DNS.
• Provide SME-level support and technical leadership for cloud network operations, architecture, and service optimization.
• Lead troubleshooting and resolution of complex cloud networking incidents, connectivity issues, routing problems, latency, and load balancer issues.
• Act as the technical escalation point for P1/P2 incidents and drive Major Incident Management activities.
• Perform Root Cause Analysis and implement permanent corrective actions to reduce recurring incidents.
• Manage hybrid cloud connectivity solutions including Direct Connect, Site-to-Site VPN, Transit Gateway, and on-prem integrations.
• Execute approved cloud networking changes, upgrades, and maintenance following ITIL change management processes.
• Support cloud transformation and modernization initiatives including VPC redesign and Transit Gateway adoption.
• Implement and maintain cloud network security controls ensuring compliance with security standards.
• Develop and maintain Infrastructure-as-Code and automation solutions using Terraform and Ansible.
• Drive automation and operational efficiency through reusable workflows and cloud-native solutions.
• Implement and support cloud network monitoring, observability, and reporting using CloudWatch, Datadog, Grafana.
• Perform capacity planning, performance analysis, and optimization for scalable cloud networks.
• Collaborate with Security, Cloud, Infrastructure, Application, and Operations teams to deliver reliable solutions.
• Drive CSI initiatives and contribute to network transformation and innovation programs.

Skills

AWS Cloud Networking

Hybrid Cloud

Cloud Security

Network Modernization

Automation

Observability

Incident/CSI/ITIL

Cloud Troubleshooting

Education

Bachelor's Degree in CS/IT/Engineering

Tools

Terraform

Ansible

Datadog

Grafana

AWS CloudWatch

DNS/IPAM

Job description

Summary

• Provide SME-level expertise for AWS cloud networking, hybrid connectivity, cloud security, network modernization, and automation initiatives.
• Manage, support, and optimize enterprise cloud network infrastructure to ensure high availability, resilience, performance, and compliance.
• Act as the technical escalation point for complex cloud networking incidents, major outages, and transformation programs.
• Drive automation, operational excellence, observability, and continuous service improvement initiatives across cloud networking platforms.
• Collaborate with Cloud, Security, Infrastructure, Application, and Operations teams to deliver secure and scalable cloud network services.

Key Responsibilities

• Manage and support AWS cloud networking services including VPCs, Subnets, Route Tables, Internet Gateways, NAT Gateways, Transit Gateway, VPC Peering, Security Groups, NACLs, ALB/NLB, VPN, and Direct Connect.
• Provide SME-level support and technical leadership for cloud network operations, architecture, and service optimization.
• Lead troubleshooting and resolution of complex cloud networking incidents, connectivity issues, routing problems, latency, packet loss, and load balancer issues.
• Act as the technical escalation point for P1/P2 incidents and drive Major Incident Management activities.
• Perform Root Cause Analysis (RCA) and implement permanent corrective actions to reduce recurring incidents and improve service stability.
• Manage hybrid cloud connectivity solutions including AWS Direct Connect, Site-to-Site VPN, Transit Gateway, and on‑premises integrations.
• Execute approved cloud networking changes, upgrades, and maintenance activities following ITIL-aligned change management processes.
• Support cloud transformation and modernization initiatives including VPC redesign, Transit Gateway adoption, network segmentation, and load balancer modernization.
• Implement and maintain cloud network security controls, ensuring compliance with enterprise security standards and regulatory requirements.
• Develop and maintain Infrastructure-as-Code (IaC) and automation solutions using Terraform, Ansible, and ing technologies.
• Drive automation, self‑healing capabilities, and operational efficiency improvements through reusable workflows and cloud‑native solutions.
• Implement and support cloud network monitoring, observability, and reporting using CloudWatch, Datadog, and Grafana.
• Perform capacity planning, performance analysis, and optimization to ensure scalable and resilient cloud network services.
• Collaborate with Security, Cloud, Infrastructure, Application, and Operations teams to deliver reliable and secure cloud networking solutions.
• Drive Continuous Service Improvement (CSI) initiatives, identify optimization opportunities, and contribute to network transformation and innovation programs.

Technical Skills

• Strong expertise in AWS Cloud Networking, including VPC, Subnets, Route Tables, Transit Gateway, VPC Peering, Direct Connect, Site‑to‑Site VPN, Internet Gateway, NAT Gateway, ALB, and NLB.
• Deep understanding of Enterprise Networking protocols including TCP/IP, BGP, OSPF, MPLS, SD‑WAN, Routing, and Switching.
• Experience managing Hybrid Cloud Connectivity between AWS, on‑premise data centers, branch locations, and third‑party environments.
• Strong knowledge of Cloud Network Security including Security Groups, Network ACLs, network segmentation, and Zero Trust principles.
• Hands‑on experience with AWS Route 53, DNS, DHCP, and IP Address Management (IPAM/DDI) solutions.
• Expertise in Infrastructure as Code (IaC) and automation using Terraform and Ansible.
• Proficiency in Python ing and API‑based automation for network operations and cloud provisioning.
• Experience with Cloud Monitoring and Observability tools such as AWS CloudWatch, Datadog, and Grafana.
• Strong troubleshooting skills across network performance, routing, latency, packet loss, DNS, load balancing, and cloud connectivity domains.
• Experience with ITIL‑based operational processes, including Incident, Problem, Change, and Release Management.
• Knowledge of Cloud Network Architecture, Design Standards, and Best Practices for scalability, resilience, and high availability.
• Experience in Cloud Migration, Network Modernization, and Transformation Programs, including VPC redesign and Transit Gateway adoption.
• Familiarity with CI/CD pipelines, Git repositories, and DevOps practices for infrastructure deployment and management.
• Experience managing vendor relationships and cloud service provider escalations for complex technical issues.
• Strong capabilities in Root Cause Analysis (RCA), Capacity Planning, Performance Optimization, and Continuous Service Improvement (CSI).

Experience and Qualification

• Bachelor's Degree in Computer Science, Information Technology, Electronics & Communication, Engineering, or related discipline.
• 10+ years of experience in Enterprise Networking.
• Minimum 5+ years of hands‑on experience in AWS Cloud Networking.
• Experience managing large‑scale enterprise cloud environments.
• Strong experience with hybrid cloud connectivity and data center integration.
• Experience supporting mission‑critical production environments.
• Experience in Managed Services and ITIL‑based operational environments.
• Strong troubleshooting experience across cloud, network, and security domains.
• Experience driving cloud transformation and modernization initiatives.
• Experience with automation, Infrastructure-as-Code, and cloud operations.

Preferred Certifications

• AWS Advanced Networking – Specialty
• AWS Solutions Architect Professional
• AWS Solutions Architect Associate
• CCNP Enterprise
• CCIE Enterprise Infrastructure
• HashiCorp Terraform Associate
• ITIL Foundation
• CCSP
• CISSP