Java developer

DMITRII LEMESHCHENKO

Java Developer

Contacts

GitHub: github.com/LowPassenger

Odessa, Ukraine

SUMMARY

Enthusiastic and detail-oriented Java Developer with over a year of commercial experience, proficient

in both Java and Kotlin languages. Passionate about creating cutting-edge solutions, I have worked as

a key contributor in the development of an online help assistant utilizing Google's Speech-to-Text and

Text-to-Speech services, server deployment on AWS, and the implementation of the Retrieval

Augmented Generation Postgres PGVector database. My individual contributions include the fine-

tuning of the ChatGPT model and the development of a parsing module via HtmlUnit Java library for

resource extraction. Alongside my solid technical skills, an innate ability to adapt and learn, and a zest

for innovation, I strive to contribute effectively to dynamic teamwork for the achievement of project

goals while pushing the boundaries of technology.

EXPERIENCE

Sep 2023 -

Dec 2023

 Java Backend Developer, remote

UWP Digital, swedish company

Served as a key developer in implementing applications using microservice

architecture geared towards deep learning cases. Leveraged Spring Boot,

RabbitMQ, PostgreSQL, and Elasticsearch vector databases for optimal results. In

association with ChatGPT learning services, I pracdically applied Retrieval

Augmented Generation (RAD) and Fine Tuning methodologies to bolster system

efficacies. Moreover, I utilized AWS and Google Cloud services for server

procedures, ensuring seamless cloud operations. Additionally, I capitalized on

multithreading for an effective scheduled tasks management.

May 2023 -

Present

Java & Kotlin Developer, remote

Change the world, an international development group

Built the backend part for the Android-based application "Rate Me," using Kotlin,

Java, Android Studio, Intellij IDEA, AWS services, and Jetpack Compose for UI

interface creation.

SKILLS

Databases

Java 8, 11, 17

SpringWeb/MVC/Security/Boot

OOP, Design patterns

TDD, SOLID, DRYprinciples

JUnit, Mockito

Git/GitHub, Bitbucket

Maven, Gradle

Kotlin

AndroidMySQL, PostgreSQL, H2

Mongo DB

Vector DB

Servlets, Tomcat

FlyWay, Liquibase

AWS, Google Cloudservices

Hibernate, JPA, JDBC

Multitrading

Soft skills

Agile Kanban

Trello dashboard

Metroretro board

Linux

Docker

Swagger API

HTML, CSS

Android Studio

Jetpack Compose

Languages

Ukrainian native

Russian native

English Upper-Intermediate

EDUCATION

Department of Refrigeration Machines & Installations

Odessa State Academy of Refrigeration, Odessa, Ukraine

Master’s Degree

Java course at Mate academy (OOP, Java 8+, Spring, Hibernate)

Remote

Java software development

PROJECTS

RATE ME - KNOW YOUR AGE

play.google.com/store/apps/details?id=com.gusakov.rateme

THE WINE SHOP AND THE "VIRTUAL SOMMELIER" SITE:

wine4you.s3-website-ap-southeast-1.amazonaws.com

Source code (back-end):

github.com/LowPassenger/Wine4You

MONGODB PROJECTS:

github.com/LowPassenger/MongoApp

THE MULTITRADING PROJECTS:

github.com/LowPassenger/TreeSearch_v1

github.com/LowPassenger/TreeSearch2

github.com/LowPassenger/TreeSearch3