Senior Machine Learning Engineer

Job Description

We're looking for a Senior Machine Learning Engineer to join our cross-functional Outfits Discovery team, where we're building the next generation of AI-powered fashion experiences at ASOS.

Our mission is to help millions of customers discover complete outfits that match their personal style, preferences and the latest fashion trends. We develop large-scale machine learning systems that power personalised outfit recommendations, style discovery and intelligent product experiences across the customer journey.

As a Senior Machine Learning Engineer, you'll play a key role in designing, building and operating production machine learning systems at scale. Working alongside Machine Learning Scientists, Software Engineers and Product Managers, you'll help turn cutting-edge research into robust, customer-facing solutions that drive measurable impact for both our customers and the business.

This is an opportunity to work on challenging problems spanning recommendation systems, deep learning, personalisation and large-scale inference, while helping shape the technical direction of machine learning across ASOS.

What you’ll be doing:

• Designing, building and operating production-grade machine learning systems that power outfit discovery and personalised fashion experiences.
• Partnering with Machine Learning Scientists to productionise deep learning models and deliver measurable customer and business impact.
• Deploying and optimising batch and real-time machine learning models that serve millions of customers at scale.
• Driving improvements in system performance, reliability, observability and scalability across the machine learning lifecycle.
• Taking ownership of technical design decisions and contributing to the team's architecture, standards and engineering practices.
• Mentoring and supporting other engineers, helping raise the technical bar across the team and wider machine learning community at ASOS.
• Contributing to the development of shared machine learning capabilities, tools and best practices used across multiple teams.

Qualifications

About You

• Significant professional experience designing, building and deploying machine learning systems in production environments.
• Strong expertise in deep learning techniques and experience applying them to real-world business or customer problems.
• Hands-on experience with modern deep learning frameworks such as PyTorch, TensorFlow or similar technologies.
• Experience training and optimising machine learning models on distributed GPU infrastructure and working with large-scale datasets.
• Strong understanding of software engineering fundamentals and modern engineering practices, including CI/CD, containerisation, observability and automated testing.
• Experience working with machine learning operationalisation (MLOps), including model deployment, monitoring and lifecycle management.
• Comfortable providing technical leadership, mentoring engineers and influencing engineering decisions beyond your immediate team.
• Excellent collaboration and communication skills, with experience working in cross-functional teams to deliver impactful outcomes.

Additional Information

BeneFITS’ 

• Employee discount (hello ASOS discount!) 
• Employee sample sales 
• 25 days paid annual leave + an extra celebration day for a special moment 
• Discretionary bonus scheme 
• Private medical care scheme 
• Flexible benefits allowance - which you can choose to take as extra cash, or use towards other benefits 
• Opportunity for personalised learning and in-the-moment experiences that enable you to thrive and excel in your role