Taras Antoniuk - Senior Backend Java Developer

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Senior Backend Java Developer with deep expertise in REST APIs, microservices, and high-load enterprise systems. I diagnose bottlenecks, design resilient architectures, and deliver solutions that survive production.

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About Me

I am Taras Antoniuk, a Senior Backend Java Developer with 19+ years of enterprise software development experience. From database optimization to distributed systems with Event Sourcing and AWS — I own problems end-to-end.

Key expertise:

Java 21, Spring Boot 3.X, Spring Security (JWT, RBAC), JPA, Hibernate
Architecture: Event Sourcing, CQRS, Saga, Circuit Breaker, Retry
Apache Kafka, Resilience4j, REST API design
PostgreSQL, Oracle, MS SQL — advanced SQL optimization
Docker, GitHub Actions CI/CD, AWS (EC2, RDS, S3)
AI/ML: MCP, GraphRAG, Neo4j, ChromaDB, Vector Embeddings

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Experience

Java Backend Developer at a logistics platform (USA). Previously: PeopleSoft at St. Lawrence College, construction tech, enterprise agriculture.

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Projects

Financial Accounting with Event Sourcing, MCP Knowledge Base (GraphRAG), Time Tracking API, and more.

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Publications

Technical articles on DEV.to: JOIN FETCH optimization, pagination, JaCoCo testing, Circuit Breaker patterns.

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Skills

Java, Spring Boot, Kafka, AWS, Docker, Neo4j, GraphRAG — full breakdown of 12 technology categories.

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Education & Certifications

Bachelor's Degree in Applied Mathematics
National Technical University of Ukraine (2007 – 2013)

HackerRank Certifications: Java Basic, SQL Intermediate, SQL Advanced — view all certificates.