Anatolii Nikiforov

Experience

• 

  CJSC "Mobile capital"

  Jul 2014 - Dec 2014

  Java Developer

  Developed desktop application for sending bills p2p. Stack: Java 7, Java SwingAchievements:- Improved stability and repeatability of automated tests to make them green all the time

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  EFO Ltd.

  Dec 2014 - May 2016

  Java Developer

  Developed internal applications for electronic components distributor with 7 branches (~300 employees) such as stock management, clients requests handling, etc.Stack: Java 8, Vaadin, JavaScript, MySQL, PostgreSQLAchievements:- Migrated applications to Java 8- Improved performance of stock management service on ~50% by introducing background task executor

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  STRATIM

  Jun 2016 - Feb 2020

  Full-stack Developer

  Developed car fleet facilities marketplace working in US and Canada cities.Stack: Java 8, playframework, postgres, JavaScript, vue.js, AWSAchievements:- Introduced metrics for sql queries made per each http request and send them to DataDog. It helped to find requests making a lot of db calls and improve them. For example, for certain request reduced number of db calls from ~700 to 3- Increased speed of fetching auctions results from several minutes to ~ 300ms by introducing precalculated results computed with even load distribution among services using kafka- Introduced rate limiting for certain URLs to decrease load on backend- Smoothly split frontend and backend code into separate repositories- Updated playframework version to the latest Show less

• 

  Genestack

  Feb 2020 - Sept 2023

  Developing the Biology knowledge base. Working on the backend and architecture. Stack: Kotlin, Spring, PostgreSQL, AWSAchievements:- Introduced full-text search which made searching for entities (genes, diseases, proteins, etc.) in milliseconds of time- Introduced Rollbar to monitor exceptions in production. As a result, the number of exceptions was reduced by 99%- Introduced system monitoring (Prometheus + Grafana)- Facilitated migration from MySql to Postgres- Introduced query orchestration service to execute queries concurrently. This improved user experience so users do not need to wait until their query will be executed- Implemented thread-safe concurrent websocket session management so that several people could connect simultaneously from several browser tabs, and devices and receive notifications on the fly Show less

  • Senior Software Engineer Team Lead

    Aug 2022 - Sept 2023

  • Senior Software Engineer

    Feb 2020 - Aug 2022
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  Wolt

  Sept 2023 - now

  Senior Software Engineer