Senior Java Backend Architect for Core Systems London

JD.com Inc.; Greater London; On-site; GBP 75,000 - 110,000; Full time

Job summary

JD.com is seeking an experienced Software Engineer to lead the architecture and development of our international core systems supporting operation centres across the UK, France, Germany, and the Netherlands. The role emphasizes high-concurrency, high-availability environments with secure, scalable solutions for product listings, inventory, and supply chain management.

You will drive technical decisions, mentor engineers, and collaborate with suppliers, merchandisers, and product management to

Qualifications

• Bachelor’s degree in Engineering, Computer Science, Mathematics, or a related technical field.
• 5+ years of backend development experience with strong Java expertise, including JVM fundamentals, concurrency, multithreading, and performance tuning.
• Strong server-side architecture skills with solid knowledge of middleware such as MySQL, Redis, Kafka, and distributed systems in high-availability, high-concurrency environments.
• Excellent coding standards with a passion for technology and open-source learning.
• Strong analytical, problem-solving, and learning abilities with a proactive mindset.
• Demonstrated team leadership experience and effective communication skills in both Chinese and English.

Responsibilities

• Lead technical decision-making and architecture design for JD’s international core systems, ensuring high standards of performance, availability, concurrency, security, and scalability.
• Design and oversee complex system architectures and drive productization efforts, maintaining architectural quality through hands-on coding, continuous performance evaluation, and system optimization.
• Architect and develop backend services using Java and Spring Boot, establishing engineering best practices and reusable technical frameworks.
• Build and maintain backend systems for JD’s operation centres, ensuring seamless integration across global infrastructure.
• Identify, assess, and mitigate technical risks throughout project implementation, covering monitorability, maintainability, grey release strategies, and rollback capabilities.
• Research, evaluate, and promote new technologies and methodologies, identifying integration opportunities within global architectures to strengthen the team’s technical capability and architectural foresight.
• Provide technical leadership, mentor engineers, and continuously optimize team collaboration and engineering best practices.
• Work onsite in London, UK.

Skills

Architecture design

Backend development

Leadership

English & Chinese communication

Education

Bachelor's degree in Engineering/CS/Math

Tools

Java

Spring Boot

MySQL

Redis

Kafka

JVM

Job description

JD.com is seeking an experienced Software Engineer to lead the architecture and development of our international core systems supporting operation centres across the UK, France, Germany, and the Netherlands. The role emphasizes high-concurrency, high-availability environments with secure, scalable solutions for product listings, inventory, and supply chain management.

You will drive technical decisions, mentor engineers, and collaborate with suppliers, merchandisers, and product management to