Hire the Best Java Developers
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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

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

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.

I am a diligent and innovative Full Stack Developer with extensive expertise in designing, implementing, testing, and maintaining sophisticated systems and applications. I aim to apply my robust foundation in web and mobile application development to add exceptional value to a prospective employer. My process is deeply customer-centric; I emphasize daily communication and procedural checks to ensure transparency and efficiency. Adaptability and flexibility are hallmarks of my methodology, with a consistent focus on delivering the best outcomes. What I can offer: • Development of mobile apps, web applications, Progressive Web Applications (PWAs), and fully functional websites from MVPs to complete systems • Database architecture and optimization • Integration of APIs for functionalities such as Stripe payments or dynamic PDF generation • UI/UX design framework construction using tools like Figma • Implementation of responsive designs for optimal cross-device compatibility • Development of intuitive admin dashboards • Deployment of applications to the App Store and Google Play Store • Incorporation of advanced features like mapping services, QR code scanning, text-to-speech capabilities, sophisticated filtering, drag-and-drop interfaces and more... • Prompt communication and delivery of reliable, high-quality work Experiences: 🎨 UI/UX Design with Figma: Leveraged Figma for initial UI/UX designs to streamline client feedback and enhance the design approval process, significantly reducing time from concept to prototype. 🔁 Prototyping for Feedback: Integrated client and user feedback into interactive prototypes to refine and enhance the final product, leading to improved user satisfaction post-launch. 🧩 Component Unity with Figma: Established design consistency across applications by creating reusable Figma components, ensuring brand coherence and facilitating a more efficient development cycle. 🌈 Moodboards and Style Guides: Developed mood boards and style guides in collaboration with clients at the project's outset, aligning final outcomes with market demands and client visions. 💻 Development Efficiency with Figma: Translated Figma components into code to streamline the development process, ensuring an accurate and efficient translation of client requirements into the final product. 📦 Node.js Package Utilization: Improved code robustness and expedited development by incorporating established Node.js packages and libraries, leading to enhanced backend performance and scalability. ⚛️ React for Performance: Utilized React to develop high-performance web and mobile applications, resulting in faster loading times and a superior user experience that enhanced user engagement and retention. 📈 Scalability with Firebase and AWS: Utilized Firebase and AWS to provide scalable backend solutions, enabling cost-effective management of fluctuating user loads with consistent service quality. 📱 Cross-Platform Development with React Native: Utilized React Native to maintain a unified codebase for both iOS and Android platforms, saving on development time and costs while ensuring a seamless user experience across devices. 🔄 Redux for State Management: Implemented Redux to manage state in complex web applications, enhancing maintainability and making state changes more predictable and easier to track. 🚀 JavaScript Optimization: Optimized JavaScript code and utilized asynchronous programming to streamline user interactions, leading to smoother web app performance and reduced load times. 🔒 TypeScript for Application Architecture: Employed TypeScript for static type checking to bolster application robustness, which helped minimize runtime errors and improved overall development workflow. 🛡️ Website Security with reCAPTCHA: Improved website security by integrating Google reCAPTCHA into forms, significantly reducing spam submissions and enhancing user trust and data integrity. 💳 Stripe for Payment Processing: Implemented Stripe's payment processing to provide secure and diverse payment options, enhancing customer checkout experience and potentially improving e-commerce conversion rates. ✉️ Auto Email Notifications: Developed an automated email notification system, triggered by user actions, to foster better customer engagement and improve communication workflows. 📊 Admin Dashboard Development: Created a comprehensive admin dashboard to simplify content management and data analysis, streamlining administrative operations and decision-making processes. 📲 QR Code Functionality: Introduced QR code generation and scanning functionality to expedite user onboarding, providing quick access to app features and simplifying user account setup. 🗣️ Accessibility with Text to Speech: Integrated a text-to-speech library to enhance app accessibility, expanding usability for visually impaired users and ensuring compliance with accessibility standards. If I raised your attention please do not hesitate to reach out!

🚀 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