Java

Backend services and enterprise applications.

Spring Boot

REST APIs, MVC architecture, and production backends.

PHP

Server-side web development.

Laravel

PHP framework for web applications.

GraphQL

Flexible API query layer.

Keycloak

Identity and access management.

SOLID

Object-oriented design principles.

Design Patterns

Reusable architecture patterns for maintainable code.

Spring Security

JWT-secured REST endpoints and business-flow protection.

Flutter

Multi-platform mobile apps with a maintainable architecture.

MySQL

Relational data storage for web and backend systems.

H2

In-memory database used in tests and local setups.

Docker

Containerization with Docker Compose for reproducible environments.

GitHub Actions

CI/CD, quality gates, and automated deployments.

TestContainers

Integration tests against real containerized dependencies.

SonarQube

Static analysis and quality gates in CI.

UML

Software modeling and system design.

Git

Version control and Git Flow workflows.

GitHub

Code hosting, reviews, and collaboration.

GitLab

Git hosting and CI/CD pipelines.

Jira

Agile project tracking.

Trello

Lightweight task and sprint boards.

JUnit 5

Unit testing for Java backends.

Mockito

Mocking for isolated backend tests.

Swagger / OpenAPI

API contracts and generated clients for frontend/mobile apps.