Igor

Personal Information
Name Igor Babiy
Position Senior Java Developer
Work experience 6 years+
English level Upper Intermediate
Phone [відкрити контакти](див. вище в блоці «контактна інформація»)
Email [відкрити контакти](див. вище в блоці «контактна інформація»)
Telegram @BabiyIgor
Location Lviv, Ukraine

Java
Spring Boot, Security, Data, WebSockets, OAuth 2.0
Distributed Systems Kafka
JPA/ORM Hibernate(HQL, Criteria, 2 cache level), Spring JPA
Libraries/Tools Thymeleaf (Email Templates), Lombok, Keycloak
Testing Libraries Mockito, JUnit
Payment Systems Skrill, Adyen
Cloud Providers AWS, Azure

OS Windows Server, Windows, MacOS
Additional experience with SSO, Git, BitBucket, Firebase Push Notifications, JSON, Docker, H2, Microservice,
Xbox Token, Cognito, Shopify, Social login, log4j, WebSockets, GraphQL, OAuth 2.0,
Service discovery (Eureka), Database migration tools (Flyway, Liquibase), API documentation and
specification (Swagger, OpenAPI), Reactive caching frameworks (Caffeine, Cache2k), Redis,
Kubernetes

Experience
Project Description Casino
Internet casino
Involvement 27 July 2023 – till now
Responsibilities ● Analysis and investigation of requirements for new game;
● Improvement of current project architecture;
● Development of roulette microservices;
● TDD
Project Team Size 25+
Tools & Technologies Spring (Web, Data, Security, Boot), Hibernate, Swagger 2, Junit5, Mockito, Kafka, Postgress, https, WSS
Company StakeLogicLive

Project Description CRM/ERP App for the textile industry
Warehouse management system for logistic companies of different kinds. The program offers support to all
warehouse processes required by customers and could be developed individually per customer needs.
Involvement 9 months (October 2022 - July 2023)
Responsibilities ● Development of Client and API application's structure;
● CRUD operations of domain entities implementation;
● Taking participation in sprint planning and task evaluation.
● Development of the backend part;
● Direct communication with stakeholders and the development team;
● Manage IIS;
● Code refactoring and improvements.
Project Team Size 3
Tools & Technologies MySQL, Java, Windows Server, IIS, GitBucket, Hibernate.
Company Lionwood.software

Project Description Event management App
Multi-Tenant system for handling companies that are managing different types of events.
Involvement 7 months (March 2022 - October 2022)
Responsibilities ● Analysis and investigation of requirements;
● Participation in Discovery phase with stakeholders and development team;
● Defining of DB Architecture;
● Development of backend part;
● Direct communication with stakeholders and development team;
● Code refactoring and improvements.
Project Team Size 9
Tools & Technologies Java, MySQL, Azure, Git, Hibernate.
Company Lionwood.software

Project Description Fast job marketplace
An E-commerce platform that enables users to rapidly find an hourly job.
Involvement 8 months (July 2021 - March 2022)
Responsibilities ● Analysis and investigation of requirements
● Development of backend part
● Direct communication with stakeholders and development team
● Deployment and configuring
● Code review
● Code refactoring and improvements
● Building architecture according to the customer’s design
Project Team Size 7
Tools & Technologies SSO, Java, Spring Boot, Security, WebSockets, MySQL, Firebase Push Notifications, Docker, AWS, Flyway,
Thymleaf, Social login, JPA Criteria, JSON, RESTful Web Service, Git, Hibernate.
Company Lionwood.software

Project Description App for operating coffee machine
Update the Back-end of the system which helps a user who deals with his coffee machine and recipes in it.
Update CRM/CMS system.
Involvement 7 months (December 2020 - July 2021)
Responsibilities ● Analysis and investigation of requirements
● Development of backend part
● Direct communication with development team
● Code refactoring and improvements
Project Team Size 15
Tools & Technologies Java, AWS Cognito, Shopify, RESTful Web Service, MySQL, Git, Spring Boot, Docker, Hibernate, Push
Notifications, AWS, Security, Jpa Criteria, Flyway, Microservice
Company Lionwood.software

Project Description App for Internet Xbox games gambling
Update the Back-end for the process which gives users the possibility to make bids for games that they are
playing on Xbox.
Involvement 9 months (March 2020 - December 2020)
Responsibilities ● Analysis and investigation of requirements
● Development of backend part
● Direct communication with development team
● Code refactoring and improvements
Project Team Size 6
Tools & Technologies Java, RESTful Web Service, MySQL, Git, Spring Boot, Docker, Hibernate, Push Notifications, Firebase, AWS,
Security, JPA Criteria, Flyway, Microservice, Skrill, Xbox Token, Keycloak.
Company Lionwood.software

Project Description Online jewelry store
Developed a back end for an online jewelry store. Systems have built-in chats with support, custom build
features like coupons, gift cards, loyalty for customers. Also, the system has a custom-built CRM \ CMS
system for orders and staff management.
Involvement 6 months (September 2019 - March 2020)
Responsibilities ● Analysis and investigation of requirements
● Development of backend part
● Direct communication with stakeholders and development team
● Deployment and configuring
● Code review
● Code refactoring and improvements
● Building architecture according to the customer’s design
Project Team Size 6
Tools & Technologies Java, RESTful Web Service, MySQL, Git, Spring Boot, Docker, Hibernate, Push Notifications, Firebase, AWS,
Security, Jpa Criteria, Flyway, Microservice, Skrill, Xbox Token.
Company New Tribe Agency

Project Description E-commerce platform for flower selling.
This project consists of 5 sub-projects: a Website for people who want to buy flowers, a CRM/CMS system
for statistical tracking, iOS/Android apps, and a back-end server that connects all these products.
Involvement 7 months (February 2019 - September 2019)
Responsibilities ● Analysis and investigation of requirements
● Development of backend part
● Direct communication with stakeholders and development team
● Deployment and configuring
● Code review
● Code refactoring and improvements
Project Team Size 4
Tools & Technologies Java, AWS, JSON, RESTful Web Service, MySQL, Git, H2, Spring, Docker, Hibernate, Push Notifications,
Security, Adyen, JPA Critaria
Company New Tribe Agency

Project Description Virtual football tournaments app
System for FIFA online tournaments which give possibility for users to sign up for an online FIFA tournament,
which consists of different stages: Pre-tournament - when registration for the tournament is open and users
can subscribe to it. 30 mins before the start of the tournament subscribed users should confirm their
intention to participate. 5 mins Before starting time, the system creates a bracket, where all players are
placed. Live-tournament - actual gaming state, users are playing against each other in FIFA, after the match,
they need to fill in the score of the game. If scores do not match, the decision on who is the winner is taken
by the moderator from the CRM system based on photos made by users. After the Tournament - the
statistics for players are calculated, points, coins, and achievements are given to participants.
Involvement 12 months (February 2018 - February 2019)
Responsibilities ● Analysis and investigation of requirements ● Development of backend part ● Direct communication with
stakeholders and development team ● Code review ● Code refactoring and improvements
Project Team Size 4
Tools & Technologies Java, JSON, RESTful Web Service, MySQL, Git, Spring Boot, Hibernate, Web-Sockets, Firebase
Company New Tribe Agency

Project Description App for car leasing
Back end for the system which handles orders for buying \ selling \ leasing cars from European cars vendor.
Involvement 6 months (August 2017 - February 2018)
Responsibilities ● Analysis and investigation of requirements
● Development of backend part
● Direct communication with stakeholders and development team
● Code review
● Code refactoring and improvements
Project Team Size 4
Tools & Technologies Java, Amazon web services, JSON, RESTful Web Service, MySQL, Git, H2, Spring Boot, Docker, Hibernate, Push
Notifications, AWS, Security
Company New Tribe Agency