Lenovo

Sr Operation Mgmt Specialist

Lenovo
ElectronicsSINGAPORE, Central Singapore, SingaporeFull-time1 months ago

About the role

AI summarised

This is a Level 2 Cloud Engineer role supporting Windows and Linux workloads on AWS in a regulated enterprise environment. The engineer will handle operational support, troubleshooting, patching, and security compliance for cloud infrastructure, working closely with network and security teams.

ElectronicsFull-timeInformation Technology

Key Responsibilities

  • Provide Level 2 operational support for Windows Server (2016/2019/2022) and Linux distributions (RHEL, Amazon Linux, Ubuntu).
  • Perform OS-level troubleshooting, service restarts, performance checks, and log analysis.
  • Support core platform services: Windows (AD, DNS, GPO, WSUS) and Linux (systemd services, cron, filesystem, package management).
  • Handle incidents, problems, and service requests via ITSM tools.
  • Support workloads running on core AWS services: EC2, EBS, S3, AWS Systems Manager (SSM), Amazon CloudWatch.
  • Assist with instance provisioning, validation, start/stop, resize, snapshot, and recovery activities.
  • Support UAT and PROD operational readiness and BAU handover.
  • Support AWS environments with internet and intranet-based ingress and egress traffic flows, VPCs, subnets, route tables, and security groups.
  • Work with network and security teams to validate end-to-end connectivity paths, design and support Layer 4 and Layer 7 load balancing using AWS NLB and ALB, implement and manage API exposure using Amazon API Gateway, and configure forward and reverse proxy solutions (e.g., NGINX).
  • Troubleshoot connectivity, DNS resolution, proxy routing, and firewall-related issues.
  • Support secure ingress and egress architecture by implementing reverse proxy, forward proxy, and WAF patterns, ensuring secure access control, SSL/TLS termination, and traffic inspection.
  • Perform post-implementation testing and verification from OS and network perspective.

Requirements

  • 5+ years of hands-on OS support experience across Windows and/or Linux.
  • 2+ years supporting workloads on AWS.
  • Experience operating in enterprise or regulated environments.
  • Windows Server administration (2016/2019/2022).
  • Linux administration (RHEL / Amazon Linux / Ubuntu).
  • AWS operational experience with EC2, EBS, S3, IAM (roles and instance profiles – operational usage), Systems Manager (SSM), CloudWatch.
  • Understanding of VPC fundamentals, security groups and basic routing, load balancer integrations (NLB awareness).
  • Scripting skills: PowerShell (Windows), Bash/Shell scripting (Linux).
  • Strong troubleshooting and incident triage capability.
  • Clear communicator able to work with cloud, network, and security teams.
  • Process-driven and comfortable working with runbooks and controls.
  • Proactive, ownership mindset with willingness to upskill.