Sr Technical Lead (Support & Operations)
Singapore
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Job Description
Sr Technical Lead (Support & Operations)
Singapore, Singapore

Job Summary

Job Summary 

We are seeking an experienced AWS Cloud Network Engineer with strong expertise in Infrastructure as Code (Terraform) and CI/CD automation. The ideal candidate will be responsible for designing, implementing, automating, and optimizing AWS cloud network infrastructure using Terraform-driven deployments. This role requires deep hands-on experience in AWS networking, strong troubleshooting skills, and the ability to enhance and maintain scalable cloud network environments. 

Key Responsibilities

Responsibilities 

  • Design, implement, and manage AWS cloud network infrastructure using Terraform. 

  • Create and modify Virtual Private Clouds (VPCs), subnets, route tables, gateways, and related networking components. 

  • Develop and implement subnet strategies (public, private, and isolated subnets). 

  • Configure and maintain Load Balancers (ALB/NLB), including listeners and target groups. 

  • Manage and optimize Security Groups and Network Access Control Lists (NACLs). 

  • Implement approved network designs using Terraform modules and CI/CD pipelines. 

  • Develop new Terraform modules and enhance existing ones to improve scalability and reusability. 

  • Refactor, clean up, and optimize existing Terraform code to eliminate technical debt. 

  • Enhance automation capabilities for infrastructure provisioning and configuration. 

  • Support cloud migration activities and ensure smooth transition to new environments. 

  • Troubleshoot complex AWS networking issues and provide root cause analysis. 

  • Ensure adherence to security best practices and organizational standards. 

Requirements 

  • Minimum 5 years of experience in AWS Cloud infrastructure with strong focus on networking. 

  • Extensive hands-on experience with: VPC design and configuration, Subnetting strategies, Route tables and gateways (IGW, NAT), Load Balancers (ALB/NLB), Security Groups and NACLs 

  • Strong expertise in Terraform: Writing reusable modules, Managing remote state, Code refactoring and optimization 

  • Experience with CI/CD pipelines for infrastructure deployment. 

  • Strong troubleshooting and analytical skills. 

  • Experience supporting cloud migration initiatives. 

  • Solid understanding of networking fundamentals (CIDR, DNS, routing, firewalls). 

  • Experience in enterprise-scale AWS environments. 

  • Familiarity with DevOps practices and Git-based workflows. 

  • Experience implementing security best practices in cloud environments. 

Skill Requirements

Other Requirements
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Information at a Glance

Why HCLTech?

At HCLTech, you'll supercharge your potential. You'll find your career. And you'll find your spark. All at a place that knows that helping its customers stay on top starts by putting its people first.

HCLTech is a global technology company, home to more than 230,000 people across 60 countries, delivering industry-leading capabilities centered around digital, engineering, cloud and AI, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of 12 months ending September 2026 totaled $14.8 billion.