Hire the Best Vaadin Framework Specialists in Belgrade, RS

Senior Backend Engineer with 11+ years building production Java/Spring systems for fintech, SaaS, and distributed platforms. I help startups and product teams ship reliable backends: APIs, microservices, event-driven architecture, auth/multi-tenancy, and integrations — from design to production. What I typically own: • Spring Boot 3 / Java 21 APIs and service design • Kafka event-driven systems, async processing, integrations • PostgreSQL data modeling, performance, migrations (Flyway) • Auth & multi-tenant security (JWT, RBAC/ABAC, Spring Security) • Docker/Kubernetes, CI/CD (GitHub Actions, Jenkins) • Real-time features (WebSocket / MQTT) when needed Relevant background: • FIS — post-trade derivatives clearing with CQRS/Event Sourcing (Akka/Lagom, Kafka, Couchbase) • HTEC — 20+ microservice platform for autonomous vehicle ops (mission management, dispatch, billing, tracking) • Built end-to-end: multi-tenant SaaS backend (ABAC, real-time dashboard) and analytics platform (live ingestion, simulations, billing) Best fit projects: • New Spring Boot backend / MVP → production • Microservices refactor / Kafka integration • Auth, multi-tenant SaaS, payments/fintech backends • Performance, reliability, and production hardening Availability: part-time or project-based (timezone-friendly for EU / US overlap). Message me with the problem + stack + timeline — I’ll reply with a clear approach and estimate.

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.

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.