Senior Java Engineer (Large-scale Microservices, AWS)

About CBTW

CBTW is a global independent tech consultancy group. With a team of more than 3,000 talented tech specialists on the ground in over 35 cities across Europe, the USA, Asia, Australia and Africa, we serve clients of all sizes. We believe collaboration betters our world. Our unique open ecosystem model allows us to deliver end-to-end tech solutions.

• Work as software engineer on the web-based application product in JAVA-related and open-source technologies
• Develop and enhance product offerings in accordance with design, consistent with business objectives
• Continuously research and implement new technologies to maximize development efficiency
• Identify potential issues and working out possible solutions
• Provide continuous support and guidance to less senior colleagues through regular coaching activities and support them in fulfilling their personal development plans

• At least 3+ YoE for the Medior level and 5+ years for the Senior level. If you’re confident in your skills, don’t hesitate to apply regardless of your years of experience
• Proven hands-on experience on Java ecosystem, Spring boot, core Java concepts: OOP, Collections, Threading, Concurrency, memory management, etc.
• Experience with one of NoSQL databases: MongoDB/Cassandra/graph DB (Neo4j)
• Well-versed in writing structured, well-documented, maintainable, and clean code.
• Strong experience in Restful API design and integration
• Strong experience designing, building, and maintaining microservices-based architectures, event-driven architecture.
• Hands-on experience with distributed system challenges such as latency, partial failures, retries, and timeouts, etc.
• Demonstrate your experience with design patterns, coding standards, TDD.
• Understanding of agent-based systems and tool calling architectures
• Exposure to MCP (Model Context Protocol) or similar tool orchestration frameworks
• Cloud-based technologies: AWS, OpenShift, Docker is a BIG plus.
• Experience with Kotlin/NodeJS/Python/ReactJS is a BIG plus.
• Working knowledge of functional programming languages is a BIG plus.
• Be happy to coach, mentor and train less senior colleagues.
• Good command of English (both written/verbal) is essential.