Full stack QA Engineer (Java, TCP socket-based integrations)

Location: Limassol, Cyprus Spotware Systems is seeking an experienced Senior QA Engineer (Full stack) to join our dynamic and highly professional product team in our Limassol office (or remote). This role involves working closely with product managers and developers to ensure our products are robust, scalable, and meet high-quality standards. You will be involved in functional testing, customer scenario testing, stress testing, performance testing, sanity testing, enhancing the automation processes, and the overall QA improvement process. Key Responsibilities: Conduct thorough requirements analysis and collaborate with cross-functional teams to understand technical specifications. Perform manual/automate functional/non-functional testing. Identify, track, and report bugs, ensuring they are resolved promptly with clear root cause analysis. Monitor and maintain test environments to ensure stability and efficiency in test execution. Contribute to and execute test strategies for complex systems with high availability and reliability requirements. Collaborate in code reviews to maintain high quality across automated tests and production code. Requirements: 5+ years of experience in Quality Assurance, specifically in backend projects. 2+ years of experience in troubleshooting Java applications. Proficiency in Java programming for test automation development. Solid knowledge of testing methodologies and test design techniques (e.g., boundary value analysis, equivalence partitioning, state transition testing). Experience in designing and maintaining test cases in Allure TestOps, including traceability to requirements and test reporting. Hands-on experience with microservices architecture and event-driven architecture, including understanding of inter-service communication, message brokers, and asynchronous processing. Proven experience testing TCP socket-based integrations (e.g., WebSocket, gRPC). Strong analytical skills with the ability to perform impact analysis, create traceability matrices, and work with both functional and non-functional requirements. Experience in identifying root causes and understanding issue consequences within complex backend environments. Good working knowledge of SQL for validating backend data and queries. Linux systems knowledge (CLI) for troubleshooting and test environment maintenance. Excellent communication skills with a strong command of English (B1 or above) and Russian. You use AI not just occasionally, but as a core part of how you think, work, and deliver results. Being AI-augmented is part of what makes you a top performer. Preferred Qualifications: Familiarity with binary protocols (e.g., FIX). Hands-on experience with Databases like PG, Clickhouse Hands-on experience with messaging and caching systems like Kafka, Redis Experience in the Forex industry or trading platform knowledge. Conditions: Competitive salary. Private medical insurance. Relocation support (if applicable), including an entry permit, relocation bonus, flight tickets, and airport pickup. Support with settling into life in Cyprus, including basic guidance on everyday matters, accommodation, banking, and healthcare. A comfortable office environment with fresh fruits every day, treats or pizza on Wednesdays, and snack day on Fridays. Fair remuneration based on your experience, skills, and level of responsibility. Welcome Baby Bonus and Baby Box to celebrate the arrival of a child. Birthday voucher. Partial compensation for sports activities and wellness initiatives. Greek language classes.