Software Developer (Java)

Joybuy; Greater London; On-site; GBP 70,000 - 100,000; Full time

Job summary

Joybuy in London is seeking an experienced backend engineer to develop and maintain transaction-related services using Java and Spring Boot, building core order and transaction workflows.

You will ensure data consistency and reliability across critical systems, handle high concurrency, participate in design reviews, and document technical solutions.

Qualifications

• Bachelor's degree (or equivalent) in Computer Science or a related field.
• 3+ years of experience in Java programming and Spring Boot.
• Experience building or maintaining core business systems.
• Experience working in structured development environments.
• Awareness of data protection, security, or compliance requirements in transaction systems.
• Ability to communicate effectively in English and Chinese.

Responsibilities

• Develop and maintain transaction-related backend services using Java and Spring Boot. Build core business processes for order and transaction workflows.
• Ensure data consistency, system reliability, and correctness across critical business processes.
• Support stable operation of transaction systems under high concurrency.
• Participate in requirement discussions, technical design, and code reviews.
• Document and share technical solutions and best practices.

Skills

Java

Spring Boot

Backend development

Data security awareness

Education

Bachelor's degree in CS

Job description

• Develop and maintain transaction-related backend services using Java and Spring Boot. Build core business processes for order and transaction workflows.
• Ensure data consistency, system reliability, and correctness across critical business processes.
• Support stable operation of transaction systems under high concurrency.
• Participate in requirement discussions, technical design, and code reviews.
• Document and share technical solutions and best practices.
• Work onsite in London.

Minimum Qualifications:

• Bachelor's degree (or equivalent) in Computer Science or a related field.
• 3+ years of experience in Java programming and Spring Boot.
• Experience building or maintaining core business systems.
• Experience working in structured development environments.
• Awareness of data protection, security, or compliance requirements in transaction systems Ability to communicate effectively in English and Chinese.

Preferred Qualifications:

• Experience in large internet or e-commerce companies.
• Experience with high-reliability or transaction-intensive systems.
• Familiarity with distributed systems or service-oriented architectures.
• JD.com is committed to creating a diverse environment and is proud to be an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.