Pavel Dumenko

Regular maintenance of the company's infrastructure on-premise and in the cloud (Debian, Jenkins, Kubernetes, AWS, Ansible, Terraform). Administration K8s clusters (staging and production). Servers migration to Proxmox VE. Support developers in debugging and troubleshooting infrastructure issues and Java-based services. Maintenance of diverse data storage solutions such as MySQL, ElasticSearch and Redis and Apache Hadoop (HDFS, HBase, YARN).

Responsibilities for technical lifecycle of 3rd party SaaS applications in the company. Keeping SaaS applications and services up-to-date with the company's security standards. Building necessary tooling to optimize and measure performance of our integrations continuously (GitHub Actions, Kubernetes, ArgoCD). Preparing accurate and clear technical documentation and developing support processes and procedures. Troubleshooting and diagnosing availability and performance issues.

Administration and support of company services based on Linux (CentOS/Ubuntu/Debian). Maintanance company infrastructure using Ansible, IaC and CI/CD best practicies. Building health monitoring systems (Grafana, Prometheus, Icinga). Detection of DDoS attacks, configuring and controlling filtering of network attacks (internal services and Nginx as a reverse proxy). Stack: Linux, Docker, Kubernetes, Jenkins, BitBucket, Git, Ansibles, Vault, VMs, Observability (Grafana, Prometheus, Icinga).