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 service accessibility and minimal disruption for users.

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 code versioning system. Integration of Rocketeer for automated website deployment.

Vladivostok, Primorye, Russia

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