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Hi there, I'm Dušan! I'm a Software Developer with 6+ years of experience building full-stack web applications, dashboards, and business systems. I work with Angular, Java Spring Boot, and MySQL, creating modern, scalable, and secure solutions for clients from various industries. I’m passionate about writing clean, maintainable code and delivering real, working solutions. If you’re looking for a reliable and detail-oriented developer for your next project, let’s connect!

I Design Scalable Backend & AI Systems (Spring Boot, LLM Integration, ERP, Fintech) If you need more than just a developer — if you need someone who understands both your business and how to build the system behind it — we should talk. I design and build backend systems for ERP, production environments, and data-heavy platforms, with a focus on scalability, reliability, and real-world usage. I’m not here to just write code — I help you structure the system, avoid costly mistakes, and deliver something that actually works in production. With 10+ years in software engineering and a background in production systems and business processes, I bring more than coding skills. I’ve worked on systems where downtime costs money, bad architecture breaks operations, and “just ship it” is not an option. That’s why I focus on: System design over quick hacks Scalable backend architecture Clean, maintainable solutions that survive real usage I typically help clients with: ✔ Designing backend architecture for SaaS and ERP systems ✔ Building scalable APIs with Spring Boot (high-load ready) ✔ Multi-tenant systems and data isolation strategies ✔ Integrating AI/LLM into backend workflows (automation, document processing, decision support) ✔ Refactoring broken systems that don’t scale ✔ Connecting complex systems (payments, external APIs, legacy systems) Unlike most developers, I understand the business side behind the system: Production & manufacturing workflows ERP logic and operational constraints Financial and data-driven systems This allows me to translate business requirements into working systems without endless back-and-forth. Tech I use when it makes sense: Java, Spring Boot REST / Microservices architecture SQL (MySQL, PostgreSQL, MSSQL) Kafka / messaging systems Docker / containerized environments AI integration (LLMs, APIs, automation pipelin

I'm a Java-developer with 7+ experience in building enterprise applications. Working for the customer, I have 100 percent success and solve problems in the shortest possible time. My skill set includes technologies for backend: ⭐Spring ⭐Hibernate ⭐SQL ⭐Kotlin ⭐Apache Tomcat ⭐Jboss ⭐Maven ⭐Gradle Frontend: ⭐Angular ⭐Typescript ⭐Vaadin DevOps: ⭐Jenkins ⭐Teamcity ⭐uDeploy ⭐Kubernetes ⭐Openshift ⭐Linux ⭐Bash ⭐Python ⭐Groovy Also I developed several applications from scratch: ⭐Telegram bot for real estate searching ⭐Telegram game: text RPG-game ⭐Spring-boot application for working with customer ⭐Android puzzle game I am ready to work and develop professionally, contributing to the growth of your organization.

I am a software developer with over 15 years of professional experience. I bring deep expertise in building and delivering complex systems, ranging from back-office applications to real-time processing of high-volume data.

Experienced Java Developer | Spring Boot | Microservices | AWS | CI/CD With 7 years of hands-on experience, I specialize in developing high-traffic applications primarily using Java. My expertise lies in building high-throughput applications utilizing the Spring framework and its related projects, including Spring Boot, Spring Reactive, Spring Security, and Spring Data. I have worked on systems using both monolithic and microservice architectures, developing complex applications used by millions of users. In these systems, I have utilized Kafka for stream processing, various message queues such as ActiveMQ and Amazon SQS for efficient communication, and Redis for caching. Additionally, I have worked extensively with database technologies like MySQL, PostgreSQL, and MongoDB to manage and store data effectively. I have successfully deployed applications both on-premises and in the cloud (AWS), leveraging Docker and Kubernetes for efficient containerization and orchestration. My experience extends to setting up CI/CD pipelines, ensuring smooth and automated deployment processes. If you are looking for a skilled and reliable Java developer to bring your project to life, let's connect and discuss how I can contribute to your success.

🌍 About Me Hello! I’m Dragisa Stankovski, but you can call me Gisa. I’m a dedicated and passionate Senior Java Developer from Serbia, with more than 8 years of experience building scalable, secure, and high-performance software solutions across various industries. Since my early teens, programming has been more than a job — it’s been my passion. That passion has led me to deliver clean, maintainable, and production-ready code that drives business value. 🎓 Background & Certifications 🎓 Master’s degree in Computer Science ✅ Certified Java SE Programmer 🧠 Strong foundation in object-oriented design, clean code, and SOLID principles 💡 Quick learner and self-starter, always up-to-date with the latest trends 💼 What I Bring to the Table 🔧 Backend Development (Core Focus): Java 8–21, Spring Boot 2/3, Spring WebFlux, Spring Security Reactive programming, WebFlux, Mono/Flux JWT, OAuth2, Keycloak integration REST & SOAP APIs, OpenAPI (Swagger) 🐳 DevOps & Cloud Infrastructure: Docker, Docker Compose GitHub Actions, CI/CD pipelines Helm, Kubernetes (basics) AWS, Azure, Terraform (basics) 🗃️ Database & Persistence: PostgreSQL, MySQL, Oracle R2DBC, JPA, Hibernate Liquibase, Flyway 🖥️ Frontend & Full Stack Experience: Angular 12–18, TypeScript React (basic to intermediate level) Liferay Portal (JSF/Thymeleaf-based UI) 🛠️ Tools & Project Practices: Git, IntelliJ IDEA, Maven, Gradle Jira, Confluence, Scrum & Agile Unit Testing (JUnit5, Mockito), Postman API-first development with OpenAPI Generator 🚀 Project Highlights 🔹 Finance Management System – Designed and built a modular microservices architecture with Spring Boot, PostgreSQL, and Angular. Implemented custom budgeting, savings goals, PDF generation, and recurring transactions. 🔹 Badge Management & Access Control System – Developed secure integration with Keycloak and complex reactive APIs for user/badge permissions using R2DBC and WebFlux. 🔹 AI-Based Crypto Price Tracker – Built a real-time crypto tracker (Arbitrum/Optimism) with RSI-based signal logic, alerts via Telegram, and external price fetchers integrated via WebClient. 🔹 GDPR Data Cleanup – Designed a dynamic and generic data deletion/update framework using R2DBC, Custom SQL builders, and tenant-aware logic. 🔹 Kubernetes-based Deployment – Containerized services with Docker, wrote Helm charts for deployment, and used GitHub Actions for CI/CD in a multi-tenant architecture. 🤝 Why Work With Me? Clear and honest communication I take ownership of problems and propose solutions Well-documented, scalable, and tested code Always on time, always collaborative Client satisfaction is not just a goal — it’s a rule 📢 What My Clients Say (sample placeholder) “Dragisa is a fantastic developer — he quickly understood the problem, refactored legacy code, and delivered a scalable microservice ahead of schedule.” Let’s Connect! Whether you need to fix a nasty bug, build a microservice from scratch, or containerize your application for production — I’m here to help. Let’s work together to bring your project to life. Feel free to invite me to your job — I’ll respond quickly and give you 110% commitment.