Backend Engineer, AI-Driven Search & Recommendations (London)

JD.COM; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

JD.com, a leading technology and service provider, is hiring a Software Engineer - Search and Recommendation to work on Joybuy’s backend in London. The role focuses on improving search and recommendation experiences for customers, collaborating with ML engineers and product teams to deploy scalable solutions.

The ideal candidate will have 3+ years in Java/Spring Boot, experience with search systems, and strong English communication.

Qualifications

• Bachelor's degree in Computer Science or related field.
• 3+ years of experience in Java programming and Spring Boot.
• Experience with search systems (retrieval, ranking) and microservices.
• Strong communication in English.

Responsibilities

• Design and develop backend services supporting search bar query, retrieval, and ranking scenarios.
• Integrate machine learning models into online search services through microservice-based architectures.
• Build and maintain high-performance backend systems using Java and Spring Boot.
• Collaborate with machine learning engineers to support model deployment and optimisation.
• Ensure system scalability, reliability, and low-latency performance under high traffic.
• Document system design decisions and share backend best practices within the team.
• Work onsite in London, UK.

Skills

Java

Spring Boot

Search systems

Microservices

English communication

Education

Bachelor's degree in Computer Science or related field

Job description

JD.com, a leading technology and service provider, is hiring a Software Engineer - Search and Recommendation to work on Joybuy’s backend in London. The role focuses on improving search and recommendation experiences for customers, collaborating with ML engineers and product teams to deploy scalable solutions.

The ideal candidate will have 3+ years in Java/Spring Boot, experience with search systems, and strong English communication.