KONE

Sr. Java Backend Developer

China · Work style not stated · Full time

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About the role

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EmployerKONE
LocationChina
Work styleWork style not stated
Employment typeFull time
Employer posted6 May 2026

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:

1. Lead the design and development of Java backend systems, ensuring high stability, performance, and scalability.

2. Collaborate with stakeholders to deeply understand business requirements and drive the design and implementation of microservices architecture, including service decomposition, interface design, and data modeling.

3. Develop and optimize microservices using advanced frameworks such as Spring Boot/Spring Cloud, with a deep understanding of microservices governance, service discovery, and circuit breaking mechanisms.

Show full description

4. Play a leading role in database design, optimize relational databases such as MySQL, and guide junior developers in writing efficient SQL and optimizing queries.

5. Be an expert in containerization technologies such as Docker and Kubernetes, as well as cloud platforms like AWS, Azure, Alibaba Cloud, etc.

6. Write highly maintainable and scalable code, lead code reviews, and mentor junior developers to ensure code quality and adherence to best practices.

7. Work closely with frontend teams to define and expose RESTful API interfaces, ensuring seamless integration and communication between frontend and backend services.

8. Continuously research and integrate emerging technologies, leading the team in adopting new tools and practices for technical improvements and optimizations.

9. Participate in technical leadership and guidance, providing mentorship to junior team members and contributing to the team's technical vision and roadmap.

10. For candidates with IOT experience, they will be responsible for handling large-scale data processing tasks, ensuring data real-time performance and accuracy.

Requirements:

1. Bachelor's degree or higher in Computer Science or a related field, with 5+ years of Java backend development experience, including leading projects and mentoring junior developers.

2. Proficiency in the Java programming language, deep understanding of JVM principles, and advanced knowledge of Java concurrent programming.

3. Extensive experience in microservices architecture, leading multiple microservices projects from design to deployment.

4. Deep understanding of cloud development principles, with practical experience in deploying, scaling, and maintaining cloud applications on major cloud providers.

5. Excellent problem-solving skills, able to independently analyze complex problems, design solutions, and lead their implementation.

6. Strong leadership qualities, excellent communication skills, and a proactive attitude towards learning and skill development.

7. Ability to collaborate with frontend, QA, and DevOps teams to drive project success and ensure high-quality deliverables.

8. Priority will be given to candidates with IOT-related work experience, especially in handling large-scale data processing.

At KONE, we are focused on creating an innovative and collaborative working culture where we value the contribution of each individual. Employee engagement is a key focus area for us and we encourage participation and the sharing of information and ideas. Sustainability is an integral part of our culture and the daily practice. We follow ethical business practices and we seek to develop a culture of working together where co-workers trust and respect each other and good performance is recognized. In being a great place to work, we are proud to offer a range of experiences and opportunities that will help you to achieve your career and personal goals and enable you to live a healthy and balanced life.

Read more on https://careers.kone.com/en/

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