Software Engineer - Recommendation in London

At the company, also known as JINGDONG, we are building one of the world’s most trusted technology and supply chain ecosystems. What started as a bold idea in China has evolved into a NASDAQ-listed, Fortune 44 global enterprise serving over 700 million active customers. Powered by advanced logistics, innovative technology, and a commitment to integrity, the company operates across retail, logistics, technology, property and more, creating solutions that make everyday life smarter, faster, and more connected.

The company is expanding its international footprint through a digitally intelligent, cross-border supply chain and world-class logistics network, supported by platforms such as Joybuy, which brings trusted products to customers worldwide. Today, our teams operate across China, the U.S., U.K., Netherlands, France, Germany, Spain, Brazil, Hungary, Japan, South Korea, Australia, Thailand, Vietnam, Malaysia, Indonesia, Saudi Arabia, the UAE and beyond, reaching customers in every corner of the world.

Joining the company means becoming part of a company where people, innovation, and impact go hand in hand. We offer a competitive salary, a great location, and a supportive, people-first culture where your growth truly matters. With access to global projects, learning opportunities, and an inclusive environment that values every voice, you’ll have the space to shape the future with us.

You’ll be joining the company team, which values collaboration, ownership, and a commitment to delivering high-quality results in a fast-paced, dynamic environment.

• Design and develop backend services supporting recommendation and discovery scenarios.
• Integrate machine learning models for personalised ranking and recommendation using microservice architectures.
• Build and maintain backend applications using Java and Spring Boot.
• Collaborate with machine learning engineers to support model deployment, serving, 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.

• Bachelor’s degree (or equivalent) in Computer Science or a related field.
• 3+ years of experience in Java programming and Spring Boot.
• Experience related to search or recommendation systems, such as ranking, retrieval, or advertising.
• Experience with microservices architecture and service deployment.
• Ability to communicate effectively in English and Chinese.

• Experience supporting ML-enabled search systems in production environments.
• Experience working on high-concurrency or low-latency services.
• Experience in large internet or consumer-facing technology companies.
• Familiarity with distributed systems design.

The company 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, colour, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.