Machine Learning Engineer - Fulfillment

JD.COM INTERNATIONAL UK LTD; Greater London; On-site; GBP 70,000 - 120,000; Full time

Job summary

JD.com International UK Ltd. is seeking a Machine Learning Engineer focused on demand forecasting, replenishment optimization, and supply chain decision intelligence.

You will design, develop, and deploy models that influence forecast accuracy, stock availability, fulfilment cost, and customer experience in a fast-paced environment. The role requires building large-scale models, collaborating with product, engineering, and operations teams, and working on-site in London.

Qualifications

• Bachelor’s degree in Engineering, Computer Science, Mathematics, or a related technical field.
• 3+ years of professional experience as a machine learning engineer or applied research scientist.
• Experience programming in Java, C++, Python or related language.
• Experience with neural deep learning methods and machine learning.
• Proven ability to work independently with minimal guidance; proactively manage tasks and priorities across multiple projects; analyze and execute work efficiently; collaborate effectively with cross-functional teams; and thrive in fast-paced, results-driven environments.
• Effective communication skills in English.

Responsibilities

• Design, implement, and evaluate machine learning models for demand forecasting, replenishment, and fulfilment optimization.
• Develop innovative algorithmic solutions to complex forecasting and supply chain problems in close collaboration with product, engineering, and operations teams.
• Contribute to the technical direction of the fulfilment intelligence platform and influence model architecture, system design, and best practices.
• Work onsite in London, UK.

Skills

ML experience

Independent working

English communication

Cross-functional collaboration

Education

Bachelor’s degree in Engineering, Computer Science, Mathematics, or related field

Tools

Python

PyTorch

TensorFlow

scikit-learn

Hadoop

Spark

Java

C++

Job description

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 are building a next‑generation inventory prediction & replenishment optimization platform to support JD’s global fulfilment services. We are looking for a Machine Learning Engineer who is passionate about turning machine learning and research into real, large‑scale business impact. As a Machine Learning Engineer focusing on demand forecasting, replenishment optimization, and supply chain decision intelligence, you will design, develop, and deploy models that support billions of worth of global inventory flow decisions. Your work directly influences forecast accuracy, stock availability, fulfilment cost, and customer experience.

Responsibilities

• Design, implement, and evaluate machine learning models for demand forecasting, replenishment, and fulfilment optimization.
• Develop innovative algorithmic solutions to complex forecasting and supply chain problems in close collaboration with product, engineering, and operations teams.
• Contribute to the technical direction of the fulfilment intelligence platform and influence model architecture, system design, and best practices.
• Work onsite in London, UK.

Minimum Qualifications

• Bachelor’s degree in Engineering, Computer Science, Mathematics, or a related technical field.
• 3+ years of professional experience as a machine learning engineer or applied research scientist.
• Experience programming in Java, C++, Python or related language.
• Experience with neural deep learning methods and machine learning.
• Demonstrated ability to work independently with minimal guidance; proactively manage tasks and priorities across multiple projects; analyze and execute work efficiently; collaborate effectively with cross‑functional teams; and thrive in fast‑paced, results‑driven environments.
• Effective communication skills in English.

Preferred Qualifications

• Professional experience in e‑commerce, retail forecasting, fulfilment logistics, inventory planning, or similar domains.
• Hands‑on experience with modeling tools such as Python, PyTorch, TensorFlow, scikit‑learn, etc.
• Hands‑on experience building large‑scale distributed machine learning systems such as Hadoop, Spark, etc.
• Effective communication skills in Chinese.

Equal Opportunity Employment

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.