Kseniya Kalesnikava
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Senior DevOps Engineer
Warsaw, Masovian Voivodeship, Poland
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Senior Devops EnginerKalturaAug 2024 - Current (2 years 2 months)- Migrated Prometheus alerts to native CloudWatch alarms for managed services (DocDB, ElastiCache, MSK), eliminating data export infrastructure and reducing monitoring costs - Enhanced WAF security posture and lowered costs by auditing rulesets and migrating to AWS Managed Rules, supplemented with custom rules for advanced threat protection - Orchestrated high-availability microservices on Kubernetes via ArgoCD, improving deployment reliability and operational efficiency - Supported a large-scale video streaming platform by collaborating with product teams to optimize infrastructure for high-traffic demands and ensure client satisfaction - Proactively monitored and resolved system bottlenecks, increasing platform reliability and performance- SSenior DevOps EngineerAug 2024 - Current (2 years 2 months)
- Site Reliability EngineerMailerLiteMar 2023 - Jul 2024 (1 year 5 months)- Engineered monitoring and alerting with DataDog, VictoriaMetrics, and Grafana, reducing downtime by 25% through proactive issue identification - Automated CI/CD pipelines with GitHub Actions, accelerating deployment times by 30% and improving developer productivity - Provisioned and managed GCP infrastructure as code using Terraform, supporting scalable and reproducible environments for development teams - Orchestrated high-performance, multi-cluster Kubernetes environments using FluxCD and custom Helm charts, ensuring high availability for microservices - Developed tooling and automation in Go and Python, including custom metrics exporters and SDKs, to enhance operational efficiency and monitoring capabilities - Enhanced application secu
- DevOps EngineerEPAM SystemsJul 2021 - Mar 2023 (1 year 9 months)Experience: - provisioning and maintaining infrastructure in AWS - close and frequent communication with the customer - creating Terraform scripts to automate the creation of infrastructure in the AWS cloud - migration legacy applications to AWS EKS cluster - setup of Datadog, Grafana, Logz.io observability platforms to monitor customer Infrastructure - support and maintenance of customer infrastructure, such as multiple Github organizations, Github Enterprise, GitLab, Artifactory (including X-Ray), Nexus - implementing and maintaining GitHub workflows (including reusable workflows), refactoring GitLab CI workflows to GitHub actions - creating and mainta
- DevOps EngineerEPAM SystemsNov 2018 - Jun 2021 (2 years 8 months)Experience: - Provisioning and maintaining infrastructure in AWS - Managing and improving the product build processes - Designing and developing fully automated CI/CD system and pipelines using Jenkins - Creating scripts to automate manual tasks using Bash and Python languages - Set up and maintenance multiple development and test environments as well as troubleshooting issues related with them - Interacting with Development, QA/Test and other functional teams from customer side - Managing and maintaining BitBucket repositories, Jenkins, Nexus, Artifactory - Automating build and deployment process with Jenkins and Maven, eliminating 85% of manual work - Supporting and maintenance customer infrastructure Skills: - AWS - Linux - Jenkins - Ans
Education
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- bachelor, Bachelor's degree, Infocommunication systems (standardization, certification and control of parameters)Belarusian State University of Informatics and RadioelectronicsJan 2015 - Jan 2019 (4 years 1 month)