Backend Development
Scalable Java backends using Spring Boot and Quarkus, including REST APIs, security, persistence, and scheduled processing.
Full-stack Java Developer
Software consultant and full-stack Java developer with experience in building production-ready backend and full-stack applications. Specialized in Java (Spring Boot, Quarkus), RESTful APIs, enterprise applications, and modern frontends.
Scalable Java backends using Spring Boot and Quarkus, including REST APIs, security, persistence, and scheduled processing.
Development of enterprise-grade applications with a focus on scalability, maintainability and integration within complex organizations.
Modern frontends (React, Next.js, Vue.js, Angular) connected to REST APIs.
CI/CD pipelines, automated testing, and quality gates using SonarQube and TeamCity.
2020 – 2024
Avans Hogeschool
Graduation project focused on an AI-driven request processing application using Spring Boot, GPT models and WebSockets.
Aug 2018 – Present
Founded and led a software development company specializing in custom web applications for small businesses and startups. Responsible for end-to-end project delivery, from requirements analysis to deployment and maintenance. View projects at https://erdemsoftware.nl
Sep 2025 – Dec 2025
Development of a production-ready full-stack reporting application for Managed Services. Aggregates data from GitLab, Azure DevOps, SonarQube and TeamCity and generates dashboards and customer reports for SLA evaluations.
Jun 2025 – Jul 2025
Migration of an async Java masterclass module to Quarkus using Mutiny. Implemented CRUD functionality with MongoDB and delivered extensive unit and integration test coverage.
Sep 2024 – Present
Completed the Quintor Java Masterclass, developing enterprise-grade software using Spring, JPA, REST, CI/CD and Agile/Scrum in team-based projects.
Aug 2022 – Jan 2023
Research and implementation of unit, integration and end-to-end testing strategies across applications using Jest, Playwright and PHPUnit.
"Deniz works with enthusiasm, asks critical questions, and consistently delivers the right solutions."