Sergei Chukh

Freelancer

DevOps Engineer / SRE / Developer

Working as a freelance engineer in a startup environment on a trading bot platform that connects to centralized
(Bybit, Mexc) and decentralized (Uniswap, Mira) exchanges via REST and WebSocket APIs.

• Built Kubernetes infrastructure on GKE and Hetzner (Talos) for reproducible, reliable deployments
• Automated infrastructure with Pulumi and Helm to reduce configuration errors and simplify updates
• Created and maintain the open-source project pulumi-talos-cluster, streamlining installation and operations of Talos clusters
• Stack: GCP (GKE), Talos, web3.js, VictoriaMetrics, Typescript, Nodejs, Pulumi, Hetzner

AMarkets

DevOps Engineer / SRE

Online broker (Forex/CFD). SRE/DevOps responsible for platform reliability and operations, primarily around databases.

• Diagnosed and resolved complex database and application performance issues (PostgreSQL, MySQL, Redis)
• Introduced PostgreSQL auditing tools to identify missing indexes and query anti-patterns
• Partnered with Go engineers on MetaTrader 5 services, improving reliability and reducing costs
• Designed service interaction patterns and rollout strategies for the monolith-to-Kubernetes migration (Deckhouse)
• Improved reliability and observability with Prometheus stack dashboards/alerts and Sentry error tracking
• Stack: AWS, ansible, kubernetes, k8s (deckhouse), helm, werf, Golang, Metatrader 5, Pulumi, PostgreSQL, Sentry, Gitlab, MySQL, Redis, Prometheus stack

Gaijin Entertainment

DevOps Engineer / SRE

Maintained and developed infrastructure for games such as Warthunder and Enlisted.

• Ensured uptime of high-load game backends, handled troubleshooting, and took part in on-call rotations
• Built custom service discovery using native etcd mechanisms
• Documented the entire server-side distribution stack for game clients as a docker-compose setup, containerizing numerous C++ and Go services
• Stack: Linux (CentOS 7), Redis, AWS (RDS, EC2, VPC, Route53), Graphite + Telegraf, Kubernetes on bare metal, Docker as build environment, Golang, Puppet, Ansible, Terraform, Jenkins, Gerrit

Yandex

Support L2 Specialist

Served on the second-line support team for Yandex Cloud.

• Handled customer support tickets
• Troubleshot cloud-side services (MDB, Compute, Kubernetes)

Rostelecom IT

DevOps Engineer / SRE

Supported and developed the WINK project (formerly Rostelecom Interactive TV).

• Updated, configured, and troubleshot product software (Wink API services)
• Set up monitoring for servers and services (Zabbix, Prometheus, VictoriaMetrics), participated in on-call duty, and responded to incidents
• Administered PostgreSQL databases (backups, replication, performance assessments)
• Automated tasks and CI/CD workflows (GitLab CI)
• Supported the product team by providing and creating tools as a service
• Handled non-technical work: training the duty shift on the new platform, working with business analysts, planning and ordering new hardware for the platform
• Stack: Linux (Centos 7), PostgreSQL (+Pgbouncer), NSQ, ClickHouse, Nginx, Reindexer (https://github.com/Restream/reindexer), Prometheus Stack (+Victoria Metrics), Opscode Chef, Gitlab, Golang

Equilibrium

DevOps Engineer

Helped build a crypto fintech product in a small team of enthusiasts.

• Maintained public blockchain nodes (Parity for ETH, nodeos for EOS)
• Introduced a feature-branch development approach using Docker Swarm on the staging environment to meet team needs
• Stack: Linux (Ubuntu), AWS (RDS, EC2, VPC, Route53), Docker swarm, Prometheus Stack, HashiCorp Vault, Teamcity

Restream

Technical Support Engineer

Rostelecom's "Interactive TV" project. Worked in the monitoring department.

• Processed requests in the ticketing system (Jira)
• Performed initial OS setup (CentOS) on servers and handled inventory via IaC (Puppet)

UGTU

2009-09-01 - 2014-05-01