Hire the Best Java EE Developers in Kyiv, UA

🏆 10+ years of experience as Software Engineer 🎯Delivered for insurance, telecommunications, security/surveillance domains, business management platforms ✅ Frameworks & Tools: Java/J2EE, Spring Boot, MSSQL, MongoDB, Docker, Hibernate, REST, Liferay, JUnit, Jenkins, Maven, Ant, API Integration. Java Backend development is one of my strengths, I will bring to you apps with modern, attractive, simple, and easy to use functionality. I'm very friendly, straightforward, honest, hard working and very easy to work with. I am looking for long-term relationship with clients, come and work with me to find out that I am your excellent partner. I'm looking forward to know more about your app idea to bring it to life!

"Hi! 👋 I'm a backend developer with 3 years of experience specializing in Java ☕ and the Spring Framework 🌱. With a robust understanding of SQL 🗄️, REST 🌐, and various database systems, I’m dedicated to creating high-performance, scalable, and maintainable applications. 🚀 My expertise in testing 🧪 and deployment ensures that my solutions are functional and reliable." Technical Skills: 🟡 Programming Languages: Java 🌱 Spring Framework: Spring Boot, Spring Core, Spring Data Access, Spring Web, Spring MVC, Spring Security 📦 Object-Relational Mapping: Hibernate, JDBC, JPA, OXM ✅ Testing: JUnit, Jupiter, Mockito, Unit Tests, Integration Tests 🛠️ Build Tools: Maven 🗄️ Databases: SQL, MySQL, PostgreSQL 🔄 Version Control: Git 💻 IDEs: IntelliJ IDEA, Eclipse, Neovim 🔗 Other: Java OOP, Collections, Exception Handling, Streams and Lambdas, Concurrency and Multithreading, Input/Output (I/O), Memory Management, Design Patterns, Annotations. What I Offer: 🌐 Backend Development: Building RESTful APIs and microservices with Spring Boot, ensuring efficient data handling and service integration. 📊 Database Management: Designing and implementing robust database schemas and optimizing SQL queries for MySQL and PostgreSQL. 🧪 Testing Excellence: Writing comprehensive unit and integration tests to ensure code quality and functionality. ⏩ Agile Methodologies: Familiar with Agile practices, enabling rapid development and iterative feedback. 🤝 Collaboration: Strong communicator who thrives in team environments, working closely with front-end developers, product managers, and stakeholders. Why Work With Me? ✨ I am passionate about technology and continuously seek to improve my skills and stay updated with industry trends. My approach combines technical expertise with a commitment to delivering quality solutions that meet your business needs. I take pride in writing clean, efficient code and always look for ways to enhance performance and scalability. Let’s Connect! 🎉 If you’re looking for a dedicated backend Java developer who can deliver results, I’d love to discuss your project further. Feel free to reach out, and let’s create something amazing together!

Senior Full-Stack & AI Software Engineer with 10+ years building scalable, reliable web products end-to-end — TypeScript/Node.js backends (NestJS, GraphQL, Kafka, PostgreSQL, Redis) and React/Next.js/Vue frontends on AWS and GCP. Recent work I'm proud of: ✅ Modernized a D2L education platform for a large Canadian charity — cut page load times 30%+, migrated to PostgreSQL (+35% query performance, zero data loss), serving thousands of learners nationwide. ✅ Built core features of the eWizard editor — the flagship authoring component of an enterprise content platform used by 150+ pharma and life-science companies. ✅ Shipped a generative-AI chatbot end-to-end: fine-tuned LLM, Stable Diffusion avatars, ElevenLabs voice, serverless AWS (Lambda + Step Functions), Next.js streaming frontend. I ship fast with modern AI-assisted development (Claude, Cursor, GitHub Copilot) and have 55 merged open-source PRs (NestJS, Zilliqa, ESLint/Vue ecosystems). What you get: clean architecture, clear communication, reliable delivery, and a senior partner who has led and mentored engineering teams. Available for both short- and long-term projects.

🚀 Senior Java Developer with 14+ Years of Experience in Scalable Software Solutions As a Java Developer I specialize in building robust, scalable, and high-performance software systems using Java, Spring Boot, and modern API architectures. 💼 My Expertise: ✅ Java ✅ Spring Boot, Spring Cloud, Spring Security ✅ Microservices Architecture ✅ REST API / OpenAPI / Swagger ✅ SAP Hybris for eCommerce ✅ Frontend with React and Angular ✅ API Development & Integration ✅ Cloud Services – AWS, Docker 🔍 What I Offer as a Java Developer Over the years, I’ve contributed to a wide variety of Java-based projects — from enterprise-level platforms to e-commerce systems — helping clients convert ideas into real, revenue-generating software. I bring not just technical expertise, but also strategic thinking to each Java or Spring Boot-based application I build. ✅ Services I Provide: 🔧 Web & Backend Development (Java, Spring Boot) 🔌 API Design & Integration 🔄 Microservices with Spring Cloud 🛒 SAP Hybris eCommerce Solutions 📊 Custom CRM systems 🌐 Data Scraping and Automation 💻 Full-stack Solutions with Java + React 🧩 Tech Stack: Backend (Java & Spring): ✔️ Java, Spring Boot, Spring Cloud, Spring MVC, Spring Security, Kafka ✔️ REST API, OpenAPI, Swagger, JSON, XML ✔️ Hibernate, JPA, Quartz, Lombok ✔️ Java Concurrency, Servlet, JUnit, Mockito Frontend: ✔️ React, Angular, JavaScript, TypeScript ✔️ TailwindCSS, Bootstrap, HTML, CSS, LESS DevOps & Tools: ✔️ Git, GitHub, GitLab ✔️ Docker, Maven, Gradle, Tomcat ✔️ Postman, SoapUI, AWS (S3, EC2) ✔️ MySQL, MongoDB ✔️ IntelliJ, VS Code, JIRA, Confluence 🤝 Why Work With Me? 🗣️ Transparent communication & detailed Java-based estimates 📈 Focus on maintainable, high-quality Spring Boot code 🧠 Deep understanding of Java API integrations and real-world use cases 🕹️ Able to work independently or as part of a distributed team If you’re looking for a reliable Java Developer who knows how to turn requirements into rock-solid Spring Boot applications — I’d be happy to help. Let’s connect and build something great with Java. 🚀

👋 Hey there! I'm Orest, a Java Developer with a knack for translating ideas into practical software solutions. Check out some of my projects on my profile. Explore my toolkit: Backend Skills🌐: I work with Spring Boot, Spring MVC, and JPA Hibernate to build efficient and scalable applications. From seamless database interactions to crafting robust APIs, I've got the backend covered. Database Proficiency 💾: I enjoy playing around with MySQL, designing, optimizing, and managing databases. Venturing into Front-end 🚀: Currently delving into the front-end world with ReactJS, HTML, CSS, and Tailwindcss to create captivating user interfaces. User Interface (desktop) 🎨: Using JavaFX and FXML, I bring user interfaces to life, focusing on both functionality and visual appeal in desktop applications. 💡 While continually learning, my commitment to delivering effective solutions is unwavering. Let's collaborate on your project and bring your ideas to life through code. 📬 Feel free to drop me a message to discuss your vision or explore collaboration opportunities. Looking forward to the coding journey ahead!

⭐⭐⭐⭐⭐"Mykyta has exceptional characteristics both in hard and soft skills. He took a part in complex software development projects as a part of a large mixed group. The feedback from our customers and team is always positive." ⭐I'm the highest-rated and highest-earning Java & Groovy freelancer on Upwork with numerous 5-star reviews, including overly positive feedback. ⭐ I've developed different custom specific software using modern java & groovy software using microservice and monolithic architecture, improved performance, refactored and tested in next business domains: ✅ Utilities ✅ Fintech ✅ Auto ✅ Security ✅ Cryptocurrency ✅✅✅ Brief information about me! ✅✅✅ ✅ Senior Java & Groovy Software Engineer ✅ Specializing in back-end development | Cloud Integrations (AWS, GCP, Azure) ✅ I have over 6.5+ years of experience in Java development ✅ Experienced both in developing software from scratch and maintaining large existing projects ✅ I have hands-on experience in developing back-end web services with micro-service or monolith architecture using Java technology stack, including modern cloud-based solutions. 🌟 WHY YOU SHOULD CHOOSE ME OVER OTHERS? 🌟 ✅ Clients' feedback: I am concentrating on giving VALUE and bringing SUCCESS to all of my customers, earning their TRUST and helping them to EARN MONEY. ALL customers' feedback on my Profile is extremely important to me and proves the value that I provide. ✅ Responsiveness: Communication is extremely important as a part of every business ever existed, and once it is fast and clear, it may lead to awesome results, that's why I tend to be available for my customers in no time, reply fast and clear, as well as I try to be fair, understanding and responsive. ✅ Kindness and Empathy: My main personal principles that I implement in every facet of my life. Treating everyone with respect, aiming to understand the whole situation or problem to solve the pain of my client, and constantly work to IMPROVE the client's product. 🙋🏼‍♂️I am eager to work with you, to provide high-quality code, reliable, consistent solutions, solve your problems and bring success to your business. Contact me, and we will discuss how we can work together to FULLY meet your Business Needs, follow your business rules, and bring you success. A big area of expertise: - REST API design and development - Horizontally scalable and highly available systems - Automating development workflows and deployment pipelines - Micro-service design and development - Design and development of decentralized applications (DApps) - Monitoring, log aggregation - Java and Groovy development - Service-Oriented architecture - Spring Framework (including cloud-based stack) - Experience in NoSQL Development (MongoDB, Neo4j) - Performance and Scalability Optimization Huge Skills & Technologies set: - Java/Groovy - AWS - Linux (with distributives) - Jenkins, CircleCI, Rundeck, Rancher - Docker - MySQL, Postgres - Redis, MongoDB, Neo4j. - RabbitMQ, ActiveMQ, SQS, RabbitMQ