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Досвід роботи

Java software engineer

з 01.2023 по нині (2 роки 7 місяців)
IT

• Developed an API for mobile application interaction
• Built a scalable, high-performance system to handle cryptocurrency transaction
processing
• Integrated with multiple blockchains, including Ethereum, ERC20, Polkadot,
ATOM, KAVA, TON, TRON, XRP, NEAR, Solana, Litecoin and Bitcoin
• Worked with aggregators such as Blockcypher and GetBlock.io
• Implemented real-time transaction verification and balance retrieval methods
• Utilized PostgreSQL as a relational database
• Developed using Spring Boot 2.7.14 and Java 17
• Worked with AWS services such as EC2, CloudWatch, CodeCommit and
Pipeline

Designed and maintained a high-load server-side API capable of processing
over 60 million blockchain transactions daily. Fully responsible for development,
debugging, and performance optimization of the entire backend system.

Java software engineer

з 09.2016 по 06.2021 (4 роки 9 місяців)
Электрум Пеймент Систем, Вінниця (Фінанси, банки, страхування)

• Led a team of IT specialists
• Managed system architecture and software development
• Oversaw the same responsibilities as in my previous developer role
• Developed banking and partner APIs
• Created microservices for reconciliation and notifications
• Built transaction processing servers and monitoring tools
• Developed an automated workplace solution for cashiers
• Debugged emergency system issues using log analysis
• Worked with JDBC Template, Hibernate, and Spring

Designed and developed core modules for cashier operations, transaction
processing server, system monitoring server, staff management server, and document
workflow server. Delivered stable API integrations with banking and payment platforms.
Optimized processing performance, reducing server load by ~10%.

Освіта

Вінницький Національний Технічний Університет

Системна інженерія, Вінниця
Вища, з 2010 по 2015 (5 років)

Знання і навички

• Java
• Git
• Знання принципів ООП
• SQL
• Spring Framework
• Java Core
• Hibernate
• Знання технологій JDBC
• Spring Boot
• REST API
• Apache Kafka

Знання мов

• Українська — вільно
• Англійська — вище середнього

Додаткова інформація

Hello,
I am an experienced IT professional with over 10 years in the industry, currently working as a Java Software Developer. I’m actively looking new opportunities in a similar role — preferably as a Java Developer.