Ivan Shelestov

Berufserfahrung von Ivan Shelestov

• Bis heute 2 Jahre und 1 Monat, seit Juni 2022

  Site Reliability Engineer

  Midas.Investments

  - Deploying, maintaining, monitoring and improving the reliability, scalability and performance of the in-house built crypto platform and infrastructure; - Ensuring systems remain secure and all operational requirements are fulfilled; - Developing Go-coded services to ensure that systems run smooth, clean, and robust. Personal Result: - From scratch: established monitoring service for company`s products, including crypto platform itself.

• 5 Monate, Dez. 2021 - Apr. 2022

  Software Engineer

  Ситимобил | Citymobil

  Personal Result: - Built service to automate Incident-Management processes. That boosted incident resolution time by 40%; - Made refactoring of the service written in Ruby and rewritten in Golang; - Built One-Click Test-Environment service: an app that created test environments for developers and QA engineers. - Infrastructure development supported existing internal services in the SRE/Platform team and added new features and performance metrics.

• 8 Monate, Mai 2021 - Dez. 2021

  Software Engineer (Platform Developer)

  X5 Retail Group

  Personal Result: - Built a service saves the company 100 000 EUR per year; - Monitoring-platform project: created user friendly monitoring tools for our internal customers; - Cash security service: developed service that collects logs to find discrepancies in cash registers and, thus, reduces company's money loss; - Transferred knowledge to Junior colleagues.

• 4 Monate, Jan. 2021 - Apr. 2021

  DevOps Engineer

  Profi.ru

  Personal Result: - Refactored legacy code; - Rewrote existing tools from PHP, Ruby to Python; - Created a service that scans a company's network for detecting invalid open ports; - Developed new tools for detecting slow queries in DB; - Built a security service with necessary alerting.

• 9 Monate, Mai 2020 - Jan. 2021

  Linux Systems Administrator

  DataLine Co., Ltd

  - Technical support for corporate customers: resolved issues with on-premises servers; - Administration (CentOS, Red Hat, OEL); - Developed server infrastructures for clients` projects and in-house projects; - Configured Nginx/Apache, conducted load balancing. Personal Result: - Reduced solution time standard tickets by 30% contributing to the technical documentation and optimizing the processing of it; - Built and improved services automation with Bash and Python: got rid of repetitive operations.

• 1 Jahr und 7 Monate, Okt. 2018 - Apr. 2020

  System Administrator

  .defa integration

  - MS Active Directory Administration; - Configured the local network; - Supported infrastructure services and monitoring systems; - Performed administration and regular maintenance of Windows 2008/2016 servers and applications; - Scheduled system updates (testing, organization, backup); - Administered FreePBX, Linux. Personal Result: - Uniterrupted monitoring of infrastructure and systems was ensured; - Necessary configuration settings were timely performed.