Ivan Krivonos Email & Phone Number

Novi Sad, RS

Moscow, Russia

• Researched and discovered stability issues within high-load services, executing corrective measures to enhance stability and achieve a 99.9% SLI level due to company wide SLA standards.
• Designed and implemented a robust service for storing relevant phones data. Engineered optimized storage and implemented handlers to facilitate efficient retrieval information.
• Optimized the account deletion process, significantly boosting the deletion rate from 200,000/day to 1,000,000/day. Implemented a worker system utilizing Golang channels and parallel processing for improved efficiency.
• Implemented unswitchable two-factor authentication for users, selected by some business rules of safety. Successfully migrated a large amount of data in Redis from one data structure to another, ensuring seamless.

Moscow, Russia

• deep-diving into business and product requirements for finding better solutions
• elaborating personal goals of team members - created personal growth plans for all by their prefernces - tech, managements, etc
• improved retrospectives meetings - added checking action points during next sprints and find root causes of problems

Moscow, Russia

• Backend developer in backoffice team.
• refactoring legacy code - migrate code from old PHP version to new ones, add linters and CI-checkers for catching errors and problems in code during the developing step not on the deploy to production
• optimize bottlenecks - migrating highload parts from PHP to Golang without missing of functionality
• improving architecture of codebase - made solutions more cleaner by design

Moscow, Russia

• Backend development for the project bankofpartners.com
• implemented product for compare companies by different params - markets, cost of services, types of projects, portfolio, etc.

Vladivostok, Primorye, Russia

• contributed to implementing a catalog of pre-configured setups
• participated in the UI development of self-service terminals - Angular2+
• migrate the frontend build from Grunt to Webpack due to slow build speeds and a complex dependency setup that required isolation for on-demand usage
• introduced code coverage culture through testing
• enhanced CI: Added code linting checks, executed unit and integration tests
• designed and developed the server-side of an online chat using NodeJS

Vladivostok, Primorye, Russia

• handling minor tasks with a focus on front-end development
• participated in the development of the "RSU Configurator" module - an online builder for configuring system units on the website
• involved in front-end (layout+JS/jQuery scripts) and PHP parts of the project related to component compatibility calculations

Vladivostok, Primorye, Russia

Development/supporting of software components and website layouts - custom engines, Yii2, Slim, Sass, frontend assembly using Gulp. Configuration of the Sphinx search engine as the primary search system for news websites within the holding. Creation of a news Telegram bot for PrimaMedia Media Holding - Laravel 5, Telegram Bot API. Implementation of GIT.

Vladivostok, Primorye, Russia

First work experience - working with popular PHP CMS (Joomla, Wordpress, Drupal, DLE etc.), create and support websites for business clients.