Sviatoslav Dumchenko

- Created completely new GCP-based infrastructure from scratch - Migrated flutter app from Bitrise CI to GitHub actions using AWS-provided `mac2.metal` EC2 instances - Set up tracing system based on Grafana Tempo. Later on we switched to GCP Cloud Trace - Developed GoLang libraries for all our microservices: graceful shutdown, healthchecks, prometheus metrics, tracing, logger integration with Cloud Logging. All of this enabled us to get insane observability over all our microservices.

* Took significant part in migrating infrastructure from AWS to GCP * Supported global helm chart for our microservices * Developed Terraform code for GCP infrastructure from scratch * Developed internal services: Python 3 + asyncio * Set up HashiCorp Vault and integrated into development flow * Took part in GoLang reviews and internal meetups * Was a DevOps TechLead and kept on track current and future infrastructure

* TechLeaded SysOps * Leading team of 4 awesome SRE colleagues (1:1, hiring, sprint planning, etc.) * Supported helmwave development and adoption * Migration to Cloud with terraform * Adopted automatic semver releases for IaC - we have completely versioned infrastructure * Reviewed Golang services * Adopted HashiCorp Vault for DB credentials generation * Developed Helm 3 charts * Took part in lots of internal meetups

* Adopted cloud-native tech stack (Kubernetes+Helm, Prometheus) * Implemented Terraform-based management of SberCloud (HuaweiCloud) accounts * Developed services in GoLang: exporters, operator-sdk, business services

Was working in am.ru development team * Supported growing fast microservices architecture - over 250 microservices. Some of them were ML services that used CUDA * Migrated microservices to Docker, developed CI/CD for them from scratch * Was deeply integrated into developers life: took part in GoLang and Python review * Set up completely new Prometheus-based monitoring stack * Set up completely new EFK logging stack * Actively developed some GoLang internal services, made ClickHouse retention policy daemon

Was working in Yandex.Disk development team * Provided support for a huge fleet of Linux servers: SaltStack, Ubuntu, LXC, Porto, Nginx, Postgres * Migrated some of services to internal Cloud Provider * Took part in setting up monitoring (internal tools over Graphite) * Integrated MongoDB Ops Manager into stack, integrated it with our monitoring system * Took part in business development of the main project (Python 2) * Improved CI/CD: Teamcity