Максим Р.

FreelancersМаксим Ратошнюк

Ukraine Kyiv, Ukraine
10 months 15 days ago
Available for hire Available for hire
age 20 years
registered for 2 years


235 place out of 1036
Apps for Android 1
272 place out of 1052
Position in global rating 3
  29444 place out of 244521


Maksym Ratoshniuk


Phone number: +380(66) 761-1288

Email: [email protected]

Skype ID: mratoshniuk

GitHub profile: https://github.com/mratoshniuk

LinkedIn profile: www.linkedin.com/in/maksym-ratoshniuk


PlayQ / Backend Engineer

December  2016 - today

Kyiv, UA

  • Designing and developing high-scalability micro services system for cooperating and controlling game devices, handling, and processing game events and make immediately appropriate responses.
  • Using company's own framework built on Akka and Google Guice (particularly contributor). 
  • Refactoring a monolith architecture into microservices 
  • Configuring environment orchestration tool Azuki as an alternative for Kubernetes;
  • Developing microservice for sending notification between devices with using third party services Aero Gear and One Signal.
  • Replace Vertica DB with Amazon’s Redshift + Kafka for working on with analytics;
  • Refactoring and tests coating;
  • Designing backend part for web application toolkit written on Golang for DevOps and administrators; 
  • Providing services for working with microservices’ REST API;
  • Designing and extending custom Golang MVC Framework;
  • Designing a module for working with CRON Task Scheduler and AWS Batch;
  • Technologies: Golang, Scala, Akka Http Netty, Python, .NET, Cassandra, PostgreSQL, Vertica, Click House, One Signal, Zookeeper, Kafka, Google Guice, Google Guava, Scalaz, Shapeless, Docker, Azuki, Kubernetes, AWS Batch, AWS Redshift;

Canyon Capital / Java and Scala Developer

July 2016 - October 2016

Kyiv, UA

  • Developed a messenger Android application (both backend and client parts)
  • Android application development - implement interaction with server (sending and fetching the data)
  • Backend part: migrating Java code from Spring framework to Akka Http.
    Designing asynchronous data transferring between users’ devices via Akka Actors.
  • Technologies: Dagger 2, Retrofit 2,  RxJava, Java 8, Spring MVC, Neo4j Graph DB, Scala,  FSM, Akka.

Instant Translate / Android Developer

May 2016 - June 2016


  • Developed an Android Translator, working with Bing and Google APIs
  • Technologies: Retrofit, RxJava, Google API, Bing API, Material Design.

Nova Poshta / Android Developer

March 2016 - May 2016


  • Developed 1 commercial application  “Plannary Mobile”
  • Duties: interaction with the server, development of an interface with manipulating with maps and tracking between delivery targets for daily routes.
  • Technologies: Java, Maps API, Retrofit 


NTUU KPI “Kyiv Polytechnic Institute” / Bachelor’s in Software Engineering

Fall 2014 - Present

Kyiv, Ukraine

Undergraduate Coursework: Algorithms and Data Structures; Calculus; Coding Theory; Computer Logic; Databases; Discrete Mathematics; Discrete Structures; Empirical Methods of Software Engineering; Information Theory; Linear Algebra and Geometry; Operating Systems; Parallel Programming; Probability Theory and Statistics; Programming Languages; 


Ukrainian Unified Corrupt registry / Course projects 

Server source code

General web-site for keeping track of corrupt officials in Ukraine.
Technologies: Java 8, Spring MVC, Hibernate, HTML, JS, CSS,  MySQL.

Come Around / Open Source

Client                Server

Own project, the main idea of which is unique system for creating and tracking meeting and events nearby and see friends location.

Technologies:  Java, Dagger 2, Retrofit, RxJava, Neo4j, Docker, MySQL, Spring Framework, Redis;



  1. FCE certificate (2014): certificate of English proficiency (B2).
  2. Zhytomyr Mathematics Competition (2012, 2014) : 1st  
  3. Minor Academy of Sciences of Ukraine (2014, Mathematics):  3rd 
  4. Participating in the development of online university campus 



  • Machine Learning by Stanford at Coursera. Certificate earned on 2, February;
  • Functional Programming Principles in Scala by EPFL at Coursera;
  • Functional Programming Design in Scala;
  • Parallel Programming in Scala;
  • Nanodegree Android Course by Google at Udacity;




  • C/C++, Java, Scala, R, Python, Golang, C#;
  • Akka HTTP, Android, Play, Spring, Django, Lagom;
    Reactive Extensions: RxJava / RxAndroid, Retrofit 2, Akka Streams;
  • Scikit-learn, Pandas, Matlab, Octave;
  • Databases: MySQL, PostgreSQL, MongoDB, Redis, Neo4J, Cassandra, Vertica, ClickHouse, ElasticSearch, Kibana, Redshift; 
  • Additional: Dagger 2, Google Guice, Vim, Git, Atlassian, Zookeeper, Kafka, OneSignal, Aero Gear,  Hadoop, Spark,  Azuki, Docker, Kubernetes, TeamCity;



  Recent proposals 10
CRM - программа внутреннего ведения бизнеса
Трекинг для Android-приложения
Требуется разработчик мобильного Android приложения.
Не сложное приложение на андроид
Написать андроид приложение
Нужно сделать мобильное приложение (Android)
Программа для регистрации на визу
Разработка проекта
Проффесиональный реверс апк

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Максим А.  

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