Maintenance and responsibility for installation, configuration, upgrade, and patching with various technologies: ElasticSearch Stack for searching. Kong API Gateway management. Implementation of monitoring solutions, using Prometheus, Grafana, Splunk, and integration with New Relic. Application of Ververica Platform and Apache Flink for detecting fraudulent transactions in real-time on Google Cloud Platform (GCP) for VinID, a trusted consumer application in Vietnam. Management and maintenance of Ververica Platform deployments on Kubernetes. Collaboration with the development team to identify root causes, troubleshoot issues, and support deployment of Apache Flink jobs to Google Kubernetes Platform. Set up agents and Application Performance Monitoring (APM) tools for event and log collection from applications and VMs. Monitor SSL certificate expiration for ELK Stack. Documentation updates and guidelines creation for user access to the above services. Monitoring and optimizing systems for a balanced performance and cost-effectiveness. Support the migration from Kafka to Confluent self-hosted. Provide performance product support, including system troubleshooting, performance data collection, and analysis. Management of Vault Cluster for storing secrets, key values, SSL certificates, and integration with project services. Collaborate with stakeholders to analyze requirements, clarify design dependencies, create test plans, and support functional and non-functional activities. Develop Ansible playbooks for rapid installation, configuration, and versioning via GitLab. Build reusable Terraform modules to efficiently create infrastructure following design specifications.

Creating AWS resources (VPC, subnet, routable...) and installing, and reconfiguring software settings using Terraform and Ansible. Monitoring AWS resources using Prometheus and Grafana for API health checks and server performance. Implementing Graylog, Graylog-Sidecar, and FileBeat for log server and application monitoring. Set up notification alerts for issues via Email or Slack. Setting up CI/CD pipelines using Bitbucket, Jenkins, and AWS for building and deploying applications. Implementing build, testing, deployment, and configuration management. Enhancing infrastructure development and application performance. Administering, deploying, and updating systems and services on AWS and cloud platforms. Leading initiatives for upgrading and scaling plans to improve availability, reliability, and performance. Migrating applications from Sakura VPS to AWS using Ansible for configuration management and software installation. Applying Terraform to set up infrastructure monitoring, saving time and reducing human errors. Providing technical guidance and educating team members and coworkers on development and operations. Preparing technical documents and proposals to bid on projects.

Creating AWS resources (VPC, subnet, routable) and installing, configuring software settings using Terraform and Ansible. Monitoring AWS resources using Mackerel.io. Writing Dockerfile to build docker images. Implementing CI/CD using GitLab-CI with Docker for build and deployment. Handling build, testing, deployment, and configuration management. Managing CI and CD tools for code deployments in all environments. Improving infrastructure and application development. Working with development and product teams to ensure process maturity and cost-effectiveness. Administering, deploying, and updating systems and services on AWS and cloud platforms. Leading initiatives for upgrading and scaling systems to enhance availability, reliability, and performance. Providing technical support and assisting developers and testers in product development and testing. Investigating performance and process failures and working on improvements. Supporting uptime monitoring infrastructure and infrastructure-wide security monitoring. Providing technical guidance and educating team members and coworkers on development and operations.

Perform administration and management of server systems, storage, and network security for over 200 critical servers (Dev, Test, Production) and provide 24/7 break-fix support in case of issues with the server such as Web/App inaccessibility or service corruption. Set up metrics and thresholds on CloudWatch and Nagios for system monitoring. Handle requests from customers, including providing environments, creating users, granting permissions, granting access to cloud environments, and setting up customer applications. Investigate and analyze log files of servers, storage, and network. Prepare weekly and monthly reports. Monitor and report bugs/incidents and performance issues of server, storage, and network on the Cloud Infrastructure System. Implement patches and updates for the Infrastructure System frequently based on customer requests.