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bohdankordon/README.md

Bohdan Kordon

Java Backend Developer with commercial Java experience and hands-on ownership of production-deployed backend systems.

Java 21 · Spring Boot · PostgreSQL · JPA/Hibernate · Docker · TypeScript / Node.js

Selected Projects

Vulcan Schedule Monitor

Java 21 / Spring Boot service for monitoring schedule changes in Poland's VULCAN system and delivering Telegram notifications.

Built around deterministic PostgreSQL reconciliation, transactional notification delivery, secure session handling, and automated integration testing.

Java 21 Spring Boot PostgreSQL JPA/Hibernate Flyway Testcontainers Docker

Fleet GPS

Production-deployed self-hosted fleet monitoring and operations platform running with nearly 60 vehicles.

Includes GPS history reconciliation, trip/stop analytics, alerts, access control, reporting, Telegram notifications, monitoring, backups, and production operations.

TypeScript NestJS PostgreSQL Prisma Next.js Docker

Technologies

Java Backend: Java, Spring Boot, Spring Security, Spring Data JPA, Hibernate, Maven
Data: PostgreSQL, SQL, Flyway, Oracle, PL/SQL, Prisma
Testing: JUnit, Testcontainers, WireMock
Engineering: Docker, GitHub Actions, Git, REST APIs
Additional: TypeScript, Node.js, NestJS, C#, .NET, Next.js, React

📍 Warsaw, Poland
💼 Open to Java, Backend and Software Engineer opportunities
🔗 LinkedIn

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  1. fleet-gps fleet-gps Public

    Self-hosted fleet monitoring and operations platform with durable GPS history, alerts, RBAC, and Telegram notifications

    TypeScript

  2. vulcan-schedule-monitor vulcan-schedule-monitor Public

    An unofficial Java service for monitoring school schedule changes available through the VULCAN system.

    Java

  3. codex-push-hooks codex-push-hooks Public

    Forked from MarioZZJ/cc-notify-hooks

    Tiered push notifications for Codex, Claude Code, Reasonix, and DeepSeek Harness. Get notified when an agent finishes, needs approval, or is waiting for input — without constantly watching your ter…

    Shell

  4. gta-casino-fingerprint-solver gta-casino-fingerprint-solver Public

    Computer-vision fingerprint solver for the GTA Online Diamond Casino Heist, built with Java 21 and OpenCV.

    Java