Senior Java Developer · Former Java Team Lead · 10+ years of experience

I build Java and Spring Boot services for payments, e-commerce and document processing. I combine hands-on backend development with technical leadership and React / TypeScript experience.

I focus on reliable integrations, clear API contracts and maintainable systems that support business workflows.

Open to remote Senior / Lead Java roles · Kyiv, Ukraine

LinkedIn · Hiring enquiries

• Payments and integrations: backend services, external integrations and REST API design.
• Document processing and reporting: services and interfaces that turn documents into usable information.
• Technical leadership: architecture decisions, code reviews, planning and collaboration with stakeholders.

Java 21 · Spring Boot 3 · REST APIs · Microservices · Kafka · PostgreSQL · MySQL · Hibernate / JPA · React · TypeScript

Testing and delivery: JUnit · Mockito · Testcontainers · Playwright · GitHub Actions · Docker · Micrometer / Prometheus

A Java CLI and GitHub Action that flags missing or suspicious PDF text layers before they disrupt search, indexing or text extraction. Page-level findings and JSON reports make document checks usable in CI.

Source code · GitHub Marketplace · Latest release

A portfolio API that combines user records from PostgreSQL and MongoDB using bounded concurrent requests. It retains source information and returns an explicit error when a source fails or times out, so consumers can distinguish complete results from a failed aggregation. Includes integration tests with real databases through Testcontainers, migrations and observability.

Source code · Latest release

A Kotlin plugin for IntelliJ IDEA that helps review Spring architecture and contracts across repositories, bringing these checks into the development workflow.

JetBrains Marketplace

Before this account, I contributed to Broadleaf Commerce as putrenkov. A few examples:

• Historical order purge — retention safety and MySQL/PostgreSQL compatibility.
• Domain equality and serialization invariants — regression coverage across the domain model.
• Multi-catalog persistence fix — a persistence defect validated through review.