Hire the Best Java Developers
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𝑻𝑶𝑷-𝑹𝑨𝑻𝑬𝑫 𝑷𝑳𝑼𝑺 | 100% 𝑱𝑶𝑩 𝑺𝑼𝑪𝑪𝑬𝑺𝑺 | 𝑶𝑽𝑬𝑹 9,300 𝑯𝑶𝑼𝑹𝑺 𝑶𝑵 𝑼𝑷𝑾𝑶𝑹𝑲 💻 𝐁𝐀𝐂𝐊-𝐄𝐍𝐃: 𝐉𝐀𝐕𝐀 & 𝐅𝐑𝐀𝐌𝐄𝐖𝐎𝐑𝐊𝐒 • Java 23, Java 21, Java 17 LTS, Java 8+, and Legacy • Spring Boot, Spring Security, Spring for Apache Kafka, JPA, Quarkus, Spring Webflux • RESTful APIs 🌐 𝐅𝐑𝐎𝐍𝐓-𝐄𝐍𝐃 • JavaScript • React 💾 𝐀𝐃𝐕𝐀𝐍𝐂𝐄𝐃 𝐂𝐀𝐂𝐇𝐈𝐍𝐆 & 𝐌𝐄𝐒𝐒𝐀𝐆𝐈𝐍𝐆 • Proficient with Kafka, Redis, Hazelcast, Spring Integration • Ensuring efficient data management & communication 🚀 𝐂𝐎𝐍𝐓𝐀𝐈𝐍𝐄𝐑𝐈𝐙𝐀𝐓𝐈𝐎𝐍 & 𝐎𝐑𝐂𝐇𝐄𝐒𝐓𝐑𝐀𝐓𝐈𝐎𝐍 • Adept with Docker, Kubernetes, Kong Gateway • Managing complex deployments & ensuring high availability 📊 𝐃𝐀𝐓𝐀𝐁𝐀𝐒𝐄 • MySQL, Postgres, Oracle, SQL Server • Robust data storage solutions 🌟 𝐂𝐑𝐘𝐏𝐓𝐎 & 𝐖𝐄𝐁𝟑𝐣 𝐉𝐀𝐕𝐀 𝐂𝐀𝐏𝐀𝐁𝐈𝐋𝐈𝐓𝐈𝐄𝐒 I specialize in building robust blockchain applications using Java and Web3j. My experience includes working with Polygon to develop and deploy secure smart contracts, handle token interactions, and integrate decentralized solutions seamlessly. I also have hands-on experience with Uniswap, enabling me to create and manage decentralized exchange functionalities 🔧𝐌𝐈𝐂𝐑𝐎𝐒𝐄𝐑𝐕𝐈𝐂𝐄𝐒 & 𝐌𝐎𝐍𝐎𝐋𝐈𝐓𝐇𝐈𝐂 • Extensive experience in architecting and reworking both monolithic and microservices apps • Deep understanding of various development strategies 🛠️ 𝐏𝐑𝐎𝐕𝐄𝐍 𝐓𝐑𝐀𝐂𝐊 𝐑𝐄𝐂𝐎𝐑𝐃 • Designing, developing, and implementing web-based software • Thorough understanding of industry standards & detailed requirement analysis 🔍 𝐂𝐎𝐃𝐄 𝐎𝐏𝐓𝐈𝐌𝐈𝐙𝐀𝐓𝐈𝐎𝐍 & 𝐃𝐄𝐁𝐔𝐆𝐆𝐈𝐍𝐆 • Active in code reviews and debugging • Expert in diagnosing & resolving performance issues, JVM optimizations, and memory management using VisualVM and JProfiler 🌐 𝐃𝐄𝐕𝐎𝐏𝐒 & 𝐂𝐈 • Proficiency with AWS, Jenkins, GitLab pipelines • Seamless navigation and utilization of diverse tech stacks 🤝 𝐀𝐆𝐈𝐋𝐄 𝐂𝐎𝐋𝐋𝐀𝐁𝐎𝐑𝐀𝐓𝐈𝐎𝐍 • Skilled in Agile methodologies, delivering projects within tight deadlines • Strong communication & teamwork, driving project success

✅ Master's degree ✅ 10+ years of professional experience ✅ 5+ years as Lead Developer ✅ Agentic Engineering I build complex web applications as a senior full stack architect, and I ship significantly faster than you'd expect from a single developer. I've designed and delivered everything from startup MVPs to enterprise platforms with thousands of users. I understand the full picture: architecture, APIs, databases, real-time systems, background job orchestration, testing, CI/CD, and deployment. Over the last couple of years, I've gone deep on agentic development, building workflows where AI agents handle implementation, testing, and code review in parallel under my direction. I still own every architectural decision and every system I ship, but the way I get there has changed completely. I lean hard on strict TDD, multi-agent reviews with synthesized findings, project-specific knowledge bases that keep agents grounded in real conventions, and tight red-green-refactor loops that catch regressions before they land. My current focus is the workflow itself: how to perfect it, how to help agents do better work on every run, and how to close the loop between human judgment and machine execution. The result is senior-level quality at a pace that used to require a team. If you need a web application built right, with clean architecture, comprehensive tests, and clear communication throughout, let's talk.

I am currently working as a Junior Java Developer at a consulting company specializing in technology solutions, with a focus on software development for order management systems. Previously, I held the role of Enterprise Software Consultant, where I worked on ServiceNow and OpenText solutions. I hold a Bachelor's degree in Informatics from the University of Piraeus, and have developed expertise in programming languages such as Java, SQL, Python, and C#, as well as in technical web development, CMS (Moodle), and database management using MySQL, SQLite, pgAdmin4, and PostgreSQL. Throughout my career, I have worked on various projects, including implementing Branch and Bound in Java, creating a Medieval Village in C# with Unity, and developing an Android-based supermarket administration application using Firebase and SQLite. Additionally, I have worked on web design, building a site for an athlete in HTML, and conducted image processing using OpenCV in Python. With strong interpersonal and communication skills, I am fluent in both written and spoken English and have an average knowledge of German. My attention to detail, multitasking abilities, and time management skills are complemented by a collaborative working style and strong organizational abilities. I have also completed certifications, including the Web Design and Development Course by GFOSS, the ITIL Foundation Certificate in IT Service Management, and participated in the Open Source Festival at the University of West Attica. My diverse skill set and adaptability make me a valuable asset in software development and enterprise technology consulting. I am looking for some small exra income.