Victor Ekimov, Developer in London, United Kingdom
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Victor Ekimov

Verified Expert  in Engineering

Software Developer

London, United Kingdom
Toptal Member Since
September 17, 2019

Victor is an experienced software engineer specializing in back-end development using Java, Kotlin, and Scala. His expertise includes AWS, Spring Framework, Hibernate, and Play Framework. In his spare time, Victor enjoys sharpening his algorithmic skills on coding platforms and playing Chess 960.



Preferred Environment

Git, Apache Maven, IntelliJ IDEA, Amazon Web Services (AWS)

The most amazing...

...project I've worked on is a Habbo hotel game developed with Unity.

Work Experience

Software Development Engineer

2021 - PRESENT
  • Developed a new feature for deploying new applications to Alexa devices.
  • Created a page to manage security settings for Alexa.
  • Delivered a new functionality to support Alexa device adoption.
Technologies: Amazon Web Services (AWS)

Software Developer

2018 - 2020
  • Incorporated a new self-billing feature into the existing billing engine.
  • Integrated external services to support invoice generation flow.
  • Redesigned the billing system to generate 1 million invoices per month.
  • Revamped the invoice generation logic to accommodate the product-agnostic features.
Technologies: Java

Software Developer

2017 - 2018
  • Maintained and wrote bug fixes for the advertisement delivery platform using Node.js.
  • Participated in the legacy platform rewrite to a set of new microservices using Go.
  • Participated in fixing bugs in the server-side codebase.
Technologies: Go, Node.js

Software Developer

2016 - 2017
  • Enriched influencers' API with new endpoints using Play Framework and Akka.
  • Implemented a user-generated content feature with image upload and moderation.
  • Integrated fashion collection recommendations from an external microservice.
  • Enhanced the caching layer between two microservices with Redis.
  • Increased test coverage of the legacy code by 20%.
Technologies: Scala

Software Developer

2013 - 2014
  • Designed the dice battle, shop, chat and other social server-side components.
  • Enhanced client-server communication between Java and C#.
  • Implemented configurable NPCs for stress testing and alpha launch.
  • Integrated game metrics and statistics using JMX and Graphite.
  • Migrated the legacy unit tests from jMock to Mockito.
  • Configured a deployment pipeline using Jenkins, Git, and Maven.
Technologies: Java

Software Develoepr

2012 - 2013
  • Designed an HTML-like language to be used in DOCX files.
  • Automated a GUI input form generation based on the user-provided templates.
  • Designed a persistence layer for a 52 degree North PostGIS database schema.
  • Developed a sensor management panel and observations administration tool.
Technologies: Java

Distributed Hash Table
This is a distributed hash table (DHT) with data partitioning and concurrent replication inspired by Amazon Dynamo. The application is built on top of Java RMI, which is an object-oriented equivalent of remote procedure calls (RPC). Server nodes form a ring topology with items and nodes put in ascending order. Each node is responsible for items falling into the space between current node inclusively and predecessor node exclusively. Client can get or update item from any node in the ring, even if coordinator node does not have item itself.

Global Snapshot
The Cargo company operates by moving cargo between stations. The cargo represents a movable entity. The station represents permanent storage where cargo remains for some time until transferred to another station. The transfer only happens between two different stations. The stations and transitions form a directed graph with no self-loops, no parallel edges, and is referred to as a cargo map. The cargo map consists of four stations and six transitions. The stations are the Nordic capitals: Helsinki (H), Stockholm (S), Oslo (O) and Copenhagen (C). The transitions are unidirectional (->) paths from station to station: H -> O, H -> S, S -> O, O -> C, C -> S, C -> H. The Cargo map is outlined in the picture below. The orange circles with name tags represent the stations. The orange arrows represent the directed connection between the stations. The green rectangles represent the cargo.


Java, Scala


Spring, Hibernate, Play


Functional Programming


Amazon Web Services (AWS)


MySQL, Redis, Amazon DynamoDB


Software Development

2014 - 2016

Master's Degree in Computer Science

University of Trento - Italy

2014 - 2016

Master's Degree in Computer Science

Eindhoven University of Technology - Netherlands

2009 - 2012

Bachelor's Degree in Computer Science

Mikkeli University of Applied Sciences - Finland

2011 - 2011

Erasmus Exchange in Computer Science

The University of Western Ontario - Canada


Service Design and Engineering

EIT Digital

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