Vasyl is available for hire

Vasyl Danyliuk

Verified Expert in Engineering

Software Developer

Ivano-Frankivsk, Ivano-Frankivs'ka oblast, Ukraine

Toptal member since August 8, 2018

Expertise

Spring Java JUnit Hibernate Linux MySQL JavaScript SQL Git Windows Development Firebase

Bio

Vasyl has a master's degree in electrical engineering and is a skilled Java developer with 3+ years of experience in mostly back-end development. He is currently focused on learning AI/NN technologies and is excited to gain more experience with these technologies.

Portfolio

Avocado Workflow

Git, Jenkins, Firebase, Google Cloud Datastore, Apache Maven, Spring, Java

Ondax

Spectroscopy, Subversion (SVN), Apache Maven, Swing, Java

Softjourn

JavaScript, Hibernate, Spring, Swing, Java

Experience

IntelliJ IDEA - 3 years
Java - 3 years
JUnit - 3 years
Object-oriented Programming (OOP) - 3 years
Spring - 3 years
Linux - 3 years
Hibernate - 2 years
SQL - 2 years

Availability

Part-time

Preferred Environment

Eclipse, Linux, Windows, Git, IntelliJ IDEA

The most amazing...

...thing I've developed is a local company currency based on blockchain that allows company members to buy goods from a vending machine just from their phones.

Work Experience

Java Developer (remote)

2017 - 2018

Avocado Workflow

Deployed a continuous integration system using Jenkins and Maven.
Implemented REST web services using Spring framework.
Designed Firebase data storage schema.

Technologies: Git, Jenkins, Firebase, Google Cloud Datastore, Apache Maven, Spring, Java

Java Developer (freelancer)

2017 - 2017

Ondax

Worked on improving low-level communication performance.
Developed a library for working with SPC file format (spectroscopy files) based on format specification.
Created an expression evaluating engine for manipulating spectroscopy data.
Performed code refactoring.

Technologies: Spectroscopy, Subversion (SVN), Apache Maven, Swing, Java

Java Developer

2015 - 2017

Softjourn

Developed a local in-house loyalty system based on cryptocurrency with smart contracts.
Ported existing opensource JavaScript library to Java for integrating blockchain into Spring back-end application.
Designed database schema and Solidity smart contracts.
Automated builds using Apache Maven (migration from Ant).
Migrated code repository from CVS to Git.

Technologies: JavaScript, Hibernate, Spring, Swing, Java

Experience

SJ Coins

Blockchain loyalty program, based on cryptocurrency with smart contracts that allows spending coins for buying goods from a vending machine and supporting some crowdfunding projects. It was developed in a microservices way so can be easily integrated with any other system that requires payments.

Education

2007 - 2012

Master's Degree in Electrical Engineering

Ivano-Frankivsk National Technical University of Oil and Gas - Ivano-Frankivsk, Ukraine

Certifications

MAY 2016 - PRESENT

Machine Learning

Coursera

FEBRUARY 2016 - PRESENT

Oracle Certified Professional, Java SE 8 Programmer

Oracle

DECEMBER 2015 - PRESENT

Development and Analysis of Algorithms

Prometheus

Skills

Libraries/APIs

React

Tools

IntelliJ IDEA, Git, Apache Maven, Subversion (SVN), Jenkins

Languages

Java, JavaScript, SQL

Frameworks

Spring, Hibernate, JUnit, Swing

Paradigms

Object-oriented Programming (OOP), Functional Programming

Platforms

Windows, Eclipse, Firebase, Linux

Storage

Google Cloud Datastore, MySQL

Other

Spectroscopy

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