Senior Java Backend Developer 8+ Years

Senior Java Backend Developer | 8+ Years Telegram: @Alekseevsergey93 Email: alekseevsergey213@gmail.com 📍 Cyprus, Limassol 🌍 Open to: Remote / Hybrid / On-site ✈️ Open to relocation: Cyprus | Willing to travel 🗣 Languages: Russian — Native | English — B2 About me: Senior Java Backend Developer with 8+ years of experience in software development, with a strong background in banking, enterprise systems and system integration. Currently working at Sber, developing backend functionality for a banking system serving small and micro businesses. Experienced in building new modules from scratch, designing business logic and database structures, developing REST APIs, integrating services, refactoring complex systems and solving critical production issues. I have experience working both with modern Java/Spring backend systems and large existing enterprise platforms with complex business logic and technical debt. Core expertise: • Java 8–17+ / Spring Boot • Backend & REST API development • PostgreSQL / Oracle / SQL • Apache Kafka & event-driven integrations • Hibernate / JPA / Spring Data • Microservices & Spring Cloud • Docker / Kubernetes • Performance optimization & refactoring • Integration development • Unit & integration testing • Code review & mentoring • Technical solution design Key achievements: 🚀 Designed and developed an automatic loan acceptance module from scratch, including database structure and backend logic. ⚡️ Optimized a critical process from 46 seconds to 0.5 seconds by rewriting SQL queries, business logic and a JMS service. 📈 Reduced incoming database requests/errors from 70 to 7 through SQL and workflow optimization. 👨‍💻 Experienced in code reviews, technical solution design, task decomposition and mentoring developers. 🔧 Worked with distributed data-processing systems using Kafka, Spark, Cassandra, Hadoop, WebSocket and Avro. Technologies: Java • Spring Boot • Spring Framework • Spring Cloud • Hibernate • JPA • PostgreSQL • Oracle • Apache Kafka • Apache Spark • Cassandra • Docker • Kubernetes • REST • WebSocket • JUnit • Mockito • Maven • Gradle • Git • Linux 🚀 Open to Senior Java Backend Developer opportunities, particularly in banking, fintech, retail and other commercial products where I can contribute to backend architecture, development and performance optimization. #opentowork #java #javadeveloper #seniorjava #backenddeveloper #springboot #microservices #kafka #postgresql #softwaredeveloper #backend #fintech #banking #remotejobs #relocation Вакансии от @it_vacancy_relocation ⚠️ ВНИМАНИЕ ⚠️ Если вас просят выполнить ЛЮБЫЕ действия с вашим iCloud - выйти из вашего аккаунта/зайти под другим аккаунтом ИЛИ продиктовать код/смс, прислать запись экрана ИЛИ выполнить другие странные действия — не отвечайте и сразу жалуйтесь на вакансию. Это мошенник.