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Middle/Senior Java Developer | CityPay.io
Location: Tbilisi, Georgia | On-Site
Employment Type: Full-Time
Salary: Competitive
About CityPay.io
CityPay.io is a pioneering cryptocurrency ecosystem in the region, offering seamless and easy cross-border transactions and on-spot payment solutions. As we continue to expand across the CIS region, our mission is to integrate cryptocurrency into everyday life and build a strong, innovative, and trusted community.
Key Responsibilities:
* Architect and develop resilient backend services using Java and Spring Boot.
* Design systems that can handle large-scale event-driven data flows using Kafka or queues.
* Write clear, maintainable, and thoroughly tested code.
* Collaborate with DevOps and QA to ensure services are reliable, observable, and deployable.
* (Optional) Work on containerization and service deployment in Kubernetes environments.
Required Qualifications:
* Strong experience in Java (11 or 21) with solid understanding of object-oriented design and microservices architecture.
* Proven expertise in Spring Boot for building modular, testable, and production-grade APIs.
* Strong working knowledge of SQL databases (PostgreSQL, MySQL) and NoSQL stores (MongoDB, Cassandra, etc.).
* Experience designing and implementing efficient, scalable, and fault-tolerant services.
* Hands-on experience with Kafka or similar event streaming platforms.
* Practical knowledge of RabbitMQ, ActiveMQ, or other message brokers.
* Experience containerizing services with Docker; Kubernetes experience is a plus.
* Deep understanding of software testing standards and experience writing tests using:
* JUnit for unit testing
* Cucumber/Gherkin for BDD-style integration tests
Nice to Have:
* Understanding of financial systems such as:
* Payments infrastructure
* Blockchain technologies
* Card processing systems
* Payment Service Providers (PSPs)
* Experience working in regulated environments (fintech, banking, etc.).
* Familiarity with CI/CD, observability tools, and secure API development.