Cloud Network - L3

HCLTech; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

HCLTech in Singapore seeks an senior Cloud Networking Specialist to design, implement, and optimize AWS cloud networking and hybrid connectivity for enterprise environments. You will lead incident resolution, drive automation using Terraform/Ansible, and collaborate with Security, Infrastructure, and Operations teams to ensure secure, scalable cloud network services.

The role requires 10+ years in enterprise networking, strong AWS networking expertise, and hands-on IaC experience.

Qualifications

• Bachelor's degree in CS/IT/Engineering or related field.
• 10+ years of experience in Enterprise Networking.
• Minimum 5+ years hands-on experience in AWS Cloud Networking.
• Strong experience with hybrid cloud connectivity and data center integration.
• Experience in Managed Services and ITIL-based environments.
• Experience driving cloud transformation and modernization initiatives.

Responsibilities

• 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 across cloud networking platforms.
• Collaborate with Cloud, Security, Infrastructure, Application, and Operations teams to deliver secure and scalable cloud network services.

Skills

AWS Cloud Networking

VPC

Transit Gateway

Direct Connect

VPN

Security Groups

NACLs

ALB/NLB

Terraform

Ansible

Python scripting

Datadog

Grafana

CloudWatch

CI/CD

DevOps practices

ITIL

Root Cause Analysis

Education

Bachelor's Degree in CS/IT/Engineering

Tools

Terraform

Ansible

Git

Job description

• 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 scripting 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 scripting 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.
• 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.