Sr. Java Backend Developer

About the role

As a senior member of the team, the candidate will lead the design and implementation of scalable and robust backend services, demonstrating deep expertise in microservices architecture and proficiency in developing and deploying applications in cloud environments. Candidates with IoT (Internet of Things) related work experience, especially in handling large‑scale data processing, will be given priority consideration.

Key responsibilities

• Lead the design and development of Java backend systems, ensuring high stability, performance, and scalability.
• Collaborate with stakeholders to understand business requirements and drive microservices architecture, including service decomposition, interface design, and data modeling.
• Develop and optimise microservices using advanced frameworks such as Spring Boot/Spring Cloud, with deep knowledge of service discovery and circuit‑breaking mechanisms.
• Play a leading role in database design, optimise relational databases such as MySQL, and guide junior developers in writing efficient SQL and query optimisation.
• Expertise in containerisation technologies such as Docker and Kubernetes, as well as cloud platforms like AWS, Azure, Alibaba Cloud, etc.
• Write highly maintainable and scalable code, lead code reviews, and mentor junior developers to ensure code quality and best practices.
• Work closely with frontend teams to define and expose RESTful API interfaces, ensuring seamless integration between frontend and backend services.
• Continuously research and integrate emerging technologies, leading the team in adopting new tools and practices for technical improvements.
• Provide technical leadership and mentorship, contributing to the team’s technical vision and roadmap.
• For candidates with IoT experience, handle large‑scale data processing tasks, ensuring real‑time performance and accuracy.

Required profile

• Bachelor's degree or higher in Computer Science or related field, with 5+ years of Java backend development experience, including project leadership and mentoring.
• Proficiency in Java, deep understanding of JVM principles, and advanced knowledge of Java concurrent programming.
• Extensive experience in microservices architecture, leading multiple microservices projects from design to deployment.
• Deep understanding of cloud development principles with practical experience deploying, scaling, and maintaining applications on major cloud providers.
• Excellent problem‑solving skills, able to independently analyse complex problems, design solutions, and lead implementation.
• Strong leadership qualities, excellent communication skills, and a proactive attitude toward learning and skill development.
• Ability to collaborate with frontend, QA, and DevOps teams to drive project success and ensure high‑quality deliverables.
• Priority given to candidates with IoT‑related work experience, especially in handling large‑scale data processing.