senior java backend developer

About us: Talent has no borders. Keystone AI's mission is to connect top developers around the world with the opportunities they deserve. So, it doesn't matter where you are; we are here to help you fast-track your independent career in the right direction. 🙂 Since our launch, Keystone AI's developers have successfully worked with 1200+ happy clients to build their products and growth features. 5000+ talented developers trust Keystone AI and its network to fulfill their dreams and objectives. Keystone AI is shaped by a global network of supportive, talented developers interested in remote full-time jobs. Our Glassdoor (4.5/5) and Trustpilot (4.8/5) ratings reflect the trust developers place in us and our commitment to our members' success. The Role: We are looking for a Senior Java Developer for one of our clients. You are a perfect candidate if you are growth-oriented, you love what you do, and you enjoy working on new ideas to develop exciting products. What we are looking for: 5+ years of professional experience in backend software development. Expert-level proficiency with Java and core features. Deep expertise with the Spring Framework Proven track record in designing and implementing Microservices Architecture and RESTful APIs. Experience with SQL and NoSQL databases Strong understanding of Cloud Computing principles Solid grasp of testing methodologies, including unit, integration, and end-to-end testing. Ability to work with minimal supervision. Intermediate-advanced English level. You can communicate well with both technical and non-technical clients. Located in CET timezone (+/- 3 hours), we are unable to consider applications from candidates in other time zones. Nice-to-Have: Hands-on experience with Kubernetes Knowledge of event-driven architectures (EDA) and Domain-Driven Design (DDD) Familiarity with functional programming paradigms. Responsibilities Lead the design and implementation of robust, scalable backend services using Java and the Spring Ecosystem (Spring Boot, Spring Cloud). Drive best practices in coding, testing, security, and performance optimization Build and maintain RESTful APIs and event-driven architectures to support business logic and front-end applications. Work extensively with cloud environments, leveraging containerization technologies (Docker/Kubernetes). Diagnose and resolve complex production issues, ensuring high availability and system reliability. What we offer: Get paid, not played No more unreliable clients. Enjoy on-time monthly payments with flexible withdrawal options. Predictable project hours Enjoy a harmonious work-life balance with consistent 8-hour working days with clients. Flex days, so you can recharge Enjoy up to 24 flex days off per year without losing pay, for full-time positions found through Keystone AI. Career-accelerating positions at cutting-edge companies Discover exclusive long-term remote positions at the world's most exciting companies . Hand-picked opportunities, just for you Skip the typical recruitment roadblocks and biases with personally matched positions. One seamless process, multiple opportunities A one-time contracting process for endless opportunities, with no extra assessments. Compensation Enjoy the same pay, every month with positions landed through Keystone AI.