Machine Learning Engineer - Recommendation

JD.COM INTERNATIONAL UK LTD; Greater London; On-site; GBP 80,000 - 120,000; Full time

Job summary

JD.com invites applications for a Machine Learning Engineer role at Joybuy in London. You will contribute to search and recommendation systems, collaborating with design, product, and business leads to build tools and platforms.

The role involves code development, deployment, and ongoing optimization to impact consumer experiences. The ideal candidate has solid experience in search technologies, NLP, and English proficiency, with a customer-focused approach and strong technical acumen.

Qualifications

• Bachelor's degree in engineering, computer science, mathematics or related field.
• Experience in software development with focus on search technologies.
• Experience with testing and launching software products.
• Proficiency in Python or a similar language.
• Strong English communication and customer-focused mindset.
• Understanding of NLP processing.

Responsibilities

• Participate in system design and architecture of the search and recommendation function.
• Design, develop, test, deploy, and maintain high-quality code and solutions.
• Perform code reviews to optimise performance.
• Influence and coach a distributed team of engineers.
• Translate business needs into technical requirements and priorities.
• Manage project priorities, deadlines, and deliverables.
• Look for opportunities to continuously improve technology and processes.
• Work onsite in London.

Education

Bachelor's degree in Engineering, Computer Science, Mathematics

Job description

Who We Are At JD.com, 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, JD.com operates across retail, logistics, technology, property and more, creating solutions that make everyday life smarter, faster, and more connected. Our Global Reach JD.com 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. Learn more about who we are and what we do: https://corporate.jd.com/

About the Team

You’ll be joining the JD.com team, which values collaboration, ownership, and a commitment to delivering high-quality results in a fast‑paced, dynamic environment. We have an exciting opportunity for a Machine Learning Engineer to join our growing technical team at Joybuy (https://www.joybuy.com/). Joybuy is JD.com’s European full‑category online retail brand designed to bring customers a faster, more convenient, and cost‑effective shopping experience. Offering same‑day and next‑day delivery across the UK, Joybuy combines speed, reliability, and affordability to meet the needs of modern shoppers. Your work has an impact on the search and recommendation experience for our customers. This will involve working alongside our design leads, product leads, and business leads, helping with everything from the development of tools and platforms to code optimisations and the deployment of solutions. This role will have a business impact of at least GBP 100 million. The ideal candidate will have solid technical experience with search engines and strong business acumen.

Responsibilities

• Participate in system design, architecture, and software development of the search and recommendation function.
• Design, develop, test, deploy, maintain, and enhance high‑quality code and solutions.
• Perform code reviews to optimise the technical performance of the solutions.
• Influence and coach a distributed team of engineers.
• Communicate and translate business needs into technical requirements.
• Manage project priorities, deadlines, and deliverables.
• Facilitate alignment and clarity across teams on goals, outcomes, and timelines.
• Look for opportunities to continuously improve our technology, processes, and practices.
• Work onsite in London.

Minimum Qualifications

• Bachelor's degree in Engineering, Computer Science, Mathematics, or a related technical field.
• Professional experience in software development, with recent years focused on search technologies.
• Professional experience in testing and launching software products, as well as software design and architecture.
• Experience with different programming languages and a good grasp of at least one language, such as Python.
• Customer focus with the right balance between outcome delivery and technical excellence.
• Ability to apply technical skills and know‑how to solving real‑world business problems.
• Good understanding of NLP processing.
• Proficiency in the English language.

Preferred Qualifications

• A background or strong understanding of the retail sector, logistics, and/or e‑commerce.
• Recent professional software development experience in recommender systems.
• Proficiency in the Chinese language.

EEO Statement

At JD.com, we’re committed to building a diverse and inclusive workplace where everyone can thrive. We’re proud to be an equal opportunity employer and make all employment decisions without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, disability, age, veteran status, or any other protected characteristic.