Maintenance and responsibility (Installation and Configuration, Upgrade and Patching) with: - ElasticSearch Stack (Searching). - Kong API gateway. \n- Prometheus, Grafana and New Relic (Monitoring). - Ververica Platform and Apache Flink (Detecting fraudulent transactions in real-time for VinID, Vietnam's consumer application trusted by millions of users) on GCP (Google Cloud Platform). Manage and maintain Ververica Platform deployments on Kubernetes. - Combine with the development team to find the root causes and troubleshoot when they have issues, and support the development team to deploy Apache Flink jobs to the Google Kubernetes Platform. - Set up agents and APM to collect events, and log from applications and VMs. - Monitor SSL expires for ELK Stack. - Update the document and write guidelines for users who want to use the services above. - Monitoring and Optimizing system for rebalancing cost and performance of current systems. - Support Migrate Kafka to Confluent self-hosted. - Performance product support activities that cover overall system troubleshooting, performance data collection, and analysis. - Implementation of monitoring solutions using Grafana and Prometheus, Splunk includes integrations with incident management tools. - Manage Vault Cluster to store secret key value, SSL certificate and integrate with Project services. - Work with multiple stakeholders to analyze requirements, clarify design dependencies, create test plans, and support functional and non-functional activities. - Write ansible-playbook to quickly install, and config, versioning with Gitlab. - Write Terraform module to reuse and quickly create Infrastructure following design.

- Creating AWS resources (VPC, subnet, routable...) and installing, and reconfiguring software settings by using Terraform and Ansible. - Monitoring AWS resources by using Prometheus and Grafana to monitor API health check and server performance, Graylog & Graylog-SideCar & FileBeat to monitor log server and application, and create notification alerts when an issue happens through Email or Slack channel. - Set up CI/CD for building and deploying applications using Bitbucket, Jenkin, and AWS pipeline. - Implement build, testing, deployment, and configuration management. Improve infrastructure development and application development. - Administrator, deploy and update systems and services on AWS and cloud platforms. Help lead initiatives for upgrading and scaling our plans to improve availability, reliability, and performance. - Migrate Applications from Sakura VPS to AWS (using Ansible to manage configuration and install software and dependencies ). - Apply Terraform to set up Infrastructure Monitoring to save time and reduce human errors. - Provide technical guidance and educate team members and coworkers on development and operations. - Prepare Technical Documents and Proposals to bid on the Project.

- Creating AWS resources (VPC, subnet, routable...) and installing, and configuring software settings by using Terraform and Ansible. - Monitoring AWS resources by using Mackerel.io. \n- Write Dockerfile to build docker images. - Implement CI/CD by using GitLab-CI with docker for build and deployment. - Implement build, testing, deployment, and configuration management. Manage CI and CD tools handling code deployments in all environments. Improve infrastructure development and application development. - Work with development and product teams to ensure processes progress through maturity, continuously refine our infrastructure, and ensure we are cost-effective. - Administrator, deploy and update systems and services on AWS and cloud platforms. Help lead initiatives for upgrading and scaling our systems to improve availability, reliability, and performance. - Provide technical support and assist developers and testers in product development testing. Investigate performance and process failures and work to improve them. - Support uptime monitoring infrastructure and infrastructure-wide security monitoring. - Provide technical guidance and educate team members and coworkers on development and operations.

- To perform administration and management of server systems, storage, and network, security of more than 200 servers critical (Dev, Test, Production) and break-fix 24/7 when having issues with the server (Web/App not available or service corrupted). - Setup metric and threshold on CloudWatch and Nagios for monitor system. - Perform requests from customers (Provide an environment, create users, grant permission, grant access to a cloud environment, set up a customer application.... ). - Investigate and Analyze the log file of servers, storage, and network.... - Prepare weekly and monthly reports. - Monitor and report for bugs/incidents and performance of server, storage, and network on Cloud Infra System. - Implement patches, and updates for the Infra System frequently based on requests from customers.