Hire the Best Java Developers
in Hungary

Are you seeking a top-notch full-stack developer who gets the job done right? I want to hear your idea. I am highly skilled at planning a job from idea to completion. Whether you are a technical person or non-technical I will share my process in a language you can understand. We discuss the tools, technology, and set a delivery date. Programming and technology is my lifelong passion. I keep up to date with the latest technologies and tools, so my customers can be assured that they are receiving the highest quality product. I provide the most cost-effective solutions and do my best to ensure the customer’s complete satisfaction. What sets me apart? • 14+ years of professional development experience with background in finance • 7+ years of Full Stack development experience • Use of Agile Technology, using 2-week incremental iterations on features • Long-term repeat business with established customers, & open to new customers • Able to break down large projects/tasks into bite-sized steps on a schedule • Provide estimates for projects & fixed quotes for well-defined small projects • All work is documented and presented to the customer (for future programmers) • Experience and ability to map out a project plan from start to finish, and on-time • Completed features are fully tested Technology Experience Languages • Java • PHP • Javascript • CSS Databases • MySQL • PostgreSQL • MongoDB Frameworks - backend • NodeJs • Laravel • Spring Boot Frameworks - frontend • React • Vue.js Other technologies • Docker • AWS What idea do you have? Send me a message and let’s make a plan.

✅ I have crafted backend systems for four Fortune 500 companies in the banking, e-commerce, and AI industries, each generating over $4 million in revenue in their first year. Furthermore, I spearheaded the development of internal CRM systems for three companies, resulting in a remarkable 54% decrease in operational costs. If you're looking for an experienced developer who delivers robust solutions and boosts revenue, feel free to reach out. I'm a top-rated professional on Upwork. ⭕ Reach out to me for high-quality projects based on Java and Python. ⚙️ Possessing a robust understanding of Agile Software Development processes (Scrum, Waterfall, Hybrid, Agile) and expertise in Code Review processes across projects of varying scales. 🤝 A collaborative team player with the ability to effectively engage with architects, engineers, and product management to deliver user-friendly and visually appealing results. ▪️ Take pleasure in producing clean, well-written, and highly efficient code in my projects. I firmly believe that good communication is the key to creating successful products. Key technologies: ✅ Microservices development ✅ Python ✅ Java 13 ✅ Kotlin ✅ Spring boot, Spring cloud ✅ Kubernetes ✅ PostgreSql ✅ Angular ✅ Redis ✅ ElasticSearch ✅ RabbitMQ ✅ Spring Security ✅ Keycloak ✅ Maven ✅ WebSocket ✅ MongoDB ✅ Docker ✅ Jenkins ✅ GraphQL ✅ TestContainers and Cucumber ✅ CI/CD: GitLab CI ✅ Open AI API Key Qualifications: ⭐ Expert understanding of Java and Python technologies ⭐ Understand needs of company of any scale ⭐ Development of software, mobile apps, web apps ⭐ High-performance, maintainable and reusable code ⭐ 7+ years of experience ⭐ Self-starter, hard worker, organized, attentive to details and a team player ⭐ Good communication skills

🚀 8+ years of experience ⭐ 10+ projects contributed 👋 I'm József – Full Stack Developer With over 8 years of hands-on experience in software development, I specialize in building robust, scalable applications My Core Skills: -Frontend: Angular (v18+), NgRx, Material UI, Jest, NgZorro -Backend: Java 17, Spring Boot 3, Hibernate, JOOQ, .NET Core -Testing & DevOps: JUnit, Mockito, Selenium, Git, GCP, Docker, Kubernetes

I'm a Senior Java Developer with 12+ years of professional experience, specializing in backend development using Java, Spring Boot, and Microservices architecture. Over the past 12+ years, I've built and maintained robust, scalable, cloud-native backend systems for industries including banking, healthcare, and insurance. I bring fullstack capabilities, with 5+ years of Angular experience, having worked on enterprise-level applications that integrate Angular frontends with RESTful microservices and cloud backends. I consider myself a strong Remote Contractor for Senior Java Developer, or a Fullstack Engieer with Angular roles. Key Technologies & Skills: Backend: Java 17, Java 21, Spring Boot 3, JPA, Hibernate Technologies: Microservice Architecture, REST APIs, Kafka Cloud Platforms: AWS, Azure Frontend: Angular, RxJS, Material UI, HTML, CSS DevOps: CI/CD, Jenkins, Maven, Git, Docker, Kubernetes Secondary technologies: Kotlin, GraphQL, Clean Code, RabbitMQ, Camunda What I offer: Proven experience in leading backend-heavy development projects End-to-end product ownership with a "You build it, you own it" mindset Feature development, performance tuning, and modernization of legacy systems Cross-functional collaboration in distributed teams Fullstack support with modern Angular on the frontend What I'm looking for: Remote only B2B / Contract / Freelance opportunities At least 3-6 month assigments

🚀 Experienced Full-Stack Developer specializing in Java (Spring Boot) and Angular ecosystems, with a strong background in Test Automation. I bring 3+ years of professional software development experience (Sigma Technology), delivering scalable enterprise solutions and ensuring code quality through automated testing. CORE TECH STACK 🔹 Backend: Java, Spring Boot, Hibernate/JPA, RESTful APIs, JDBC 🔹 Frontend: Angular, TypeScript, HTML5/CSS3 🔹 Quality Assurance: Robot Framework, JUnit, End-to-End Testing 🔹 Tools: Docker, Jenkins, Git, IntelliJ IDEA, Jira WHY WORK WITH ME? ✅ Full-Cycle Delivery: I handle everything from backend logic and database design to frontend implementation and automated testing. ✅ Top Rated Reliability: With $80k+ earned on Upwork and a 100% Job Success Score, I combine senior-level reliability with modern technical skills. ✅ Code Quality Focus: I don't just write code; I write maintainable, clean, and tested solutions. Previously, I built a strong reputation here as a translator/assistant, but my career has fully pivoted to Software Engineering in recent years. I am now open to contract and contract-to-hire roles.

I’m a senior Java backend developer with 16 years of experience, specializing in Java, Spring Boot, and Maven. I focus on backend architecture, modularization, and the modernization of legacy systems - delivering clear, maintainable, and production-ready code. I’ve built and maintained systems in banking, trading, and internal enterprise tools. I’m particularly experienced in cleaning up large, outdated codebases: refactoring, extracting modules, and introducing structure where it’s lacking. Beyond Java, Spring, and Maven, I regularly work with: - Persistence & Databases: Hibernate, Blaze-Persistence, Liquibase, Flyway, SQL (PostgreSQL, H2) - Web & Integration: JSF, PrimeFaces, REST APIs, gRPC, Protocol Buffers - Testing: JUnit, Mockito, PowerMock, Testcontainers - Build & DevOps: Jenkins, Docker, Git - Reporting & Documentation: JasperReports, PlantUML Whether you need to break a monolith into modules, modernize a legacy system, or get a chaotic project back under control, I deliver practical solutions without overengineering. I work independently, communicate clearly, and build solid software that lasts. My spoken English is limited. I prefer written communication. Please expect text-first collaboration; I can join brief voice calls for kickoffs or clarifications.