Taras Antoniuk

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19+ years of expertise in ERP systems, API development, and database optimization

+34 617 04 97 84 tarasantoniukr@gmail.com

About Me

I am Taras Antoniuk, an experienced Backend Developer with over 19 years of expertise in ERP systems, complex data integration, and relational databases. I specialize in designing and delivering scalable, high-performance RESTFul APIs, with a recent focus (2024) on Java and Spring Boot.

Throughout my career, I have optimized SQL queries, streamlined enterprise workflows, and built robust backend services that drive tangible business impact. I have extensive experience in microservices architecture, database design, and API development, ensuring solutions are maintainable, efficient, and secure.

Key areas of expertise include:

Summary of Qualifications

Professional Employment Experience

For full details, please visit the Experience page.

Education & Training

Bachelor's Degree in Applied Mathematics
National Technical University of Ukraine (2001 – 2013)

Certifications

View all my professional certifications on the Certificates page.

Technical Skills

Java / Spring Boot 95%
SQL / Databases 98%
REST APIs 95%
Docker / DevOps 85%
Testing (JUnit, Testcontainers) 90%

Languages

Java SQL PeopleCode PL/SQL 1C SQR

Frameworks

Spring Boot Jakarta JPA JDBC Hibernate

Databases

PostgreSQL Oracle DB MS SQL Server Redis

Testing

JUnit 5 Testcontainers JaCoCo

DevOps & CI/CD

Docker Docker Compose GitHub Actions nginx Liquibase

Tools

Maven Gradle Git Swagger/OpenAPI Postman Fiddler

Publications & Articles

DEV.to

How JOIN FETCH Reduced Database Load by 94%: A Real-World Case Study

Real-world performance optimization case study demonstrating N+1 query problem resolution and database efficiency improvements.

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DEV.to

How Pagination Saved an API from Crashing: A Practical Case Study

Real-world performance optimization case study demonstrating pagination impact on API stability.

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DEV.to

Java Testing Guide: How to Measure and Improve Code Coverage with JaCoCo

Comprehensive guide to JaCoCo integration, test coverage measurement, and improvement strategies.

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