_ _
/ \ ___ _ __ ___ | |_ ___
/ _ \ / __| '_ \ / _ \ | __| / _ \
/ ___ \\__ \ |_) | __/ | |_ | (_) |
/_/ \_\___/ .__/ \___| \__| \___/
|_|
Senior Java Software Developer specializing in high-concurrency ecosystem engineering, multi-provider distributed integrations, and secure financial transactions within the high-throughput iGaming (Gaming Service Provider) sector.
In addition to core enterprise engineering, I design systems from the ground up to experiment with emerging JVM features, assess system topology trade‑offs, and strengthen production‑ready design practices.
| Layer | Technologies & Frameworks | Architectural Principles |
|---|---|---|
| Runtime & Frameworks | Java 8–25, Spring Boot (1.5 to 3.x), Spring MVC, Maven, Gradle | Java 21+ Virtual Threads, Records, Sealed Classes, Pattern Matching |
| HTTP & Integration | Feign, WebClient, HttpClient (Java 11+), RestTemplate | Decoupled Provider Abstraction Patterns, Strategic Client Selection |
| Persistence & Cache | MySQL, JPA / Hibernate (Specifications & Native), Caffeine Cache, Redis | Pessimistic Locking, Explicit Transaction Boundaries, Index Optimization |
| Security & Resilience | JWT, OAuth2, Bucket4j Rate Limiting, OWASP Top 10 Sanitization | Concurrency Safety, Thread-safe Data Structures, Circuit Breaking |
| DevOps & Reliability | Docker, Docker Compose, GitHub Actions, Jenkins | Spring Boot Actuator, System Monitoring & Health Checks |
| Quality Assurance | JUnit 5, Mockito, Integration Testing Architectures | TDD, Design for Testability, SOLID, Explicit-over-Implicit Style |
[ Client Tier ] ──► [ Rate Limiter / Gateway ]
│
▼
[ Spring Boot App ] ──► [ Redis Cache ]
│
┌────────────────┴────────────────┐
▼ ▼
[ Relational DB ] [ Provider Integration ]
(MySQL / Locking) (WebClient / Feign)
- Code Quality: Zero placeholders. Explicit over implicit. Fully realized production-ready implementations with strict SLF4J logging, rigid null-safety, and input validation.
- System Topology: Layered architecture (
Controller→Service→Repository), strict interface-driven designs, and a focus on scalability, maintainability, and domain modeling.
- GitHub:
- Architectural Reviews: Open to discussing system design exploration, critical thinking challenges, and deep technical post-mortems.
