• Collaborated and worked closely with DevOps teams globally across United States, Netherlands, Malaysia and India to establish technical capabilities of overseas team.

• Oversee, analyze, and optimize the cloud costs of projects, to maintain a healthy balance between departmental revenue and expenditures, averaging 140,000 USD monthly.• Analyzed usage pattern of compute resources and implemented AWS Savings Plan, resulting in reduction of cloud expenses by over 6,000 USD monthly.• Developed Grafana dashboard to monitor resources utilization of EKS clusters, improved average resources utilization from 4% to 25%.• Collaborated and worked closely with SRE teams across China, Singapore and Malaysia to establish technical capabilities of overseas team.• Revamped proprietary in-house systems, elevating fault tolerance from data center level to availability zone level, such that the systems are capable of withstanding availability zone failures.• Migrated transactional systems based on virtual machines onto Kubernetes cluster with zero downtime, eliminating any downtime-incurred loss of revenue.• Managed an observability stack based on Grafana and Prometheus to monitor performance of transactional systems. Proactively addressed system anomalies triggered by alerts, ensuring swift resolution and continuous system reliability, measured at 99.9%.

• Automated the configuration and deployment of on-premise and cloud resources with Terraform and Ansible to streamline infrastructure management across multiple environments.• Migrated legacy on-prem projects to IaC (Terraform) and implemented CI/CD pipelines based on GitHub Actions to automate deployment process and version control.• Migrated micro-services (e.g. MQTT, Nginx Reverse Proxy) hosted on-prem to the cloud and improved measured services reliability from 95% to 99.9%.• Engineered and implemented a fully automated backup solution based on Open Source Technologies (Restic + Minio Object Storage) to further integrate disaster recovery process of Linux servers into CI/CD pipeline.• Revamped manually deployed Docker containers in production into Docker Compose YAML format to reinforce the use of IaC within the organization.• Managed system infrastructure for Proxmox server clusters, proactively worked out root causes of system instability and network issues to ensure permanent resolution of problems.• Deployed LibreNMS monitoring software to monitor network health of IoT devices in factories.

• Developed data extraction function of Pepperl+Fuchs RFID Systems based on JavaScript to interface with in-house software.• Documented configuration process of various IoT devices, such as proximity sensors, counters, io modules.• Configured and deployed Mikrotik router to factory sites based on network topology proposed to client.• Managed site-to-site VPN configuration for Mikrotik routers deployed in production.