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Nanachi357/README.md

Vladyslav Ponomarenko

Java/JVM backend developer focused on backend services, external integrations, event-driven workflows, and data processing.

  • Around 3 years of hands-on Java/JVM development
  • Commercial backend experience with Kotlin/Ktor and paid Java freelance experience
  • Java, Spring Boot, Ktor, PostgreSQL, Redis, Kafka, Docker

Selected repositories

  • Library — Spring Boot REST API with JPA, PostgreSQL, validation, DTO mapping, and centralized error handling.
  • KPOK2 — Java/Spring study-support application with Selenium automation, deduplication, persistence, and asynchronous processing.
  • Ariadne's Trade — historical reactive Spring project using public Deribit data, R2DBC, PostgreSQL, and Redis.
  • Cryptocurrency Market Analysis System — historical Spring Boot project for Binance market data, RSI analysis, PostgreSQL, and Thymeleaf views.

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  1. library library Public

    Spring Boot REST API for managing books, authors, readers, and their relationships.

    Java

  2. KPOK2 KPOK2 Public

    Personal Java/Spring application for collecting, deduplicating, organizing, and searching unique KROK 2 practice test items.

    Java

  3. Ariadne-s-Trade Ariadne-s-Trade Public

    Historical reactive Spring project for public Deribit market data, Redis caching, and PostgreSQL-backed trade records.

    Java

  4. Cryptocurrency-Market-Analysis-System Cryptocurrency-Market-Analysis-System Public

    Historical Spring Boot app for Binance market data, RSI analysis, and PostgreSQL-backed candlestick storage.

    Java