Максим Р.

ФрилансерыМаксим Ратошнюк

Украина Киев, Украина
6 дней 1 час назад
сделана 1 ставка
Свободен для работы свободен для работы
на сервисе 1 год


3966 место из 16176
293 место из 2169
Позиция в общем рейтинге 250
  38240 место из 449317



PlayQ, Kyiv — Backend Engineer

DEC 2016 - 

Speeded up performance by updating DB and caching APIs from 1200 to 1800 req/sec.

Maintained and redesigned platform based on Kappa architecture. Converted Spark Engine into own-designed one.

Implemented a UA and Advertising platform for 10+ partner APIs with scheduled data pulling using Cron and Kubernetes.

Developed of domain language API for models and contracts definition which support client and server parts (minimized typos and code base duplicating)

Replaced TeamCity build definition with Kotlin DSL.

Created a development pipeline involving Github, TeamCity, Jira and Slack notifications for simplifying addition and removal of the new projects and triggering dependent ones.   

Decreased build and publish time using Docker containers and Docker Compose to define testing dependencies and isolate them, which gave a speed increase from 20 to 12 minutes.


Izumi-R2 — Open Source

Macro-based API to fetch property’s name, type and value while logging.

Implemented async console and file APIs for logging.

Implemented partially compile time codecs API to reference config API.

Designed rendering policy layout for logging library.

Implemented reference configuration file for logging library.

API descriptor generator for RPC & Domain Language framework.

Swagger-like documentation and client generator.

Scalaz — Open Source

Implemented CI/CD workflow in TeamCity and Github.

Resolved issues in HTTP and logging libraries.


Kyiv Polytechnic Institute

Bachelor’s in Software Engineering

September 2014 - June 2018

Master in Software Engineering

September 2018 - June 2020


Programming Languages: Scala, Java, Golang, Python

Frameworks: Akka, Play!, Scalaz, Cats, React, Angular

Databases: Cassandra, PostgreSQL, Redshift,  MongoDB, Redis, DynamoDB

Message Queuing Systems: Kafka, Amazon SQS.

DevOps tools: ElasticSearch, Docker, Kubernetes, Azuki, Teamcity, Travis CI, Zookeeper

Advertising and User Acquisition: Facebook, Google Adwords, Tune, Kochava, Vungle, Apple Ads

Cluster Computing: Hadoop, Spark

Others:  Zookeeper, OneSignal, Aero Gear, SendGrid


English - fluent

Ukrainian, Russian - bilingual

Навыки и умения



Прикладное программирование Прикладное программирование



  Последние ставки 1
Долгосрочная удаленная работа