We're looking for a Machine Learning Engineer to join our Search & Recommendations team, where we build the machine learning systems that help millions of customers discover products every day.
From personalised recommendations and product ranking to emerging AI-powered styling experiences, our work sits at the heart of the customer journey and directly influences how customers explore and shop on ASOS.
Our recommendation and ranking systems power experiences such as Similar Items, People Also Viewed, and personalised customer journeys that adapt in real time based on customer behaviour. These systems operate at significant scale, using signals from millions of interactions to surface the most relevant products and content.
As a Machine Learning Engineer, you'll work across the full machine learning lifecycle – from experimentation and model development through to deployment, monitoring and optimisation in production environments. You'll collaborate closely with Machine Learning Engineers, Applied Scientists, Software Engineers and Product partners to transform ideas into reliable, scalable systems that deliver measurable customer and commercial impact.
You'll also help shape the future of discovery at ASOS, contributing to areas such as next-generation recommendation systems, sequence-based modelling, outfit generation and AI-driven styling experiences.
What you'll be doing
Designing, building and maintaining production-grade machine learning systems that power personalisation and product discovery
Developing and improving recommender systems, ranking models and customer-facing machine learning capabilities
Deploying models into batch and real-time environments, ensuring reliability, scalability and performance at scale
Collaborating with Applied Scientists and Engineers to take models from experimentation into robust production systems
Monitoring, evaluating and iterating on models using real-world customer behaviour and performance metrics
Contributing to engineering best practices, MLOps tooling and shared machine learning platform capabilities
Helping to improve how machine learning is developed, deployed and operated across the organisation
/01 Company Description
We’re ASOS, the online retailer for fashion lovers all around the world.
We exist to give our customers the confidence to be whoever they want to be, and that goes for our people too. At ASOS, you’re free to be your true self without judgement, and channel your creativity into a platform used by millions.
Everyone needs some help showing up as their best self. We're Disability Confident Committed - Let our Talent team know if you need any adjustments throughout the process in whatever way works best for you.
/02 Job Qualifications
About You
We're keen to hear from Machine Learning Engineers who enjoy solving real-world problems, learning from others and building systems that deliver meaningful impact.
You don't need to meet every requirement below to apply. If this role sounds exciting and aligns with your experience or career ambitions, we'd love to hear from you.
Experience developing, deploying or operating machine learning solutions in production environments
Familiarity with modern machine learning frameworks and tooling such as PyTorch, TensorFlow, XGBoost or similar technologies
Experience training models using GPUs, or an interest in distributed computing and scalable machine learning systems
Understanding of software engineering fundamentals, including version control, CI/CD, testing, observability and containerisation
An appreciation of MLOps practices and the challenges of deploying machine learning systems at scale
Strong collaboration and communication skills, with experience working across engineering, science and product disciplines
Curiosity, adaptability and a genuine enthusiasm for learning new technologies and approaches
/03 Additional Info
BeneFITS’
Employee discount (hello ASOS discount!)
Employee sample sales
25 days paid annual leave + an extra celebration day for a special moment
Private medical care scheme
Fixed Annual Payment in addition to your salary each year, it's just an extra thank you from us
Opportunity for personalised learning and in-the-moment experiences that enable you to thrive and excel in your role
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The Work
Make bold moves with strong backing and serious support.
Tech enables our current success as much as our future growth, that's why our tech stack is seriously impressive. If you've got a great idea, we'll help you run with it. Our people are our greatest asset and we're always looking for new challengers who want to help us grow.
The Potential
Boost your skills and accelerate your ambitions.
If you get a buzz out of learning new things every day, you'll love it here. We give everyone the freedom, time and investment to discover what's possible - and explore where we might go next. How far you want to take your career is up to you.
The Culture
Feel encouraged, empowered and heard as part of our expert team.
Join us and you'll be part of a supportive, fun and friendly team of progressive thinkers, listeners and doers – all working together to solve some of the most exciting and complex tech challenges.
The Prospects
Harness extraordinary opportunity at pace and at scale.
We're just getting started with our global ambitions. Our tech team are at the heart of it all, seizing opportunities and making disruptive breakthroughs that have a real business impact in an industry leading way. We already know who we want to become. Do you?
Team Culture
As A Team We Never Sit Still
We always have to move fast. And we rise to the challenges that come with being such a fast-growing business. After all, we wouldn’t be where we are today if we did things the same as everyone else.
Our Tech Training @ ASOS
Whatever experience you have, there’s always a chance to grow and develop your skills further at ASOS.
What’s It Like To Be An Engineer @ ASOS?
From our great opportunities to even greater teams, find out why becoming an engineer at ASOS could be your perfect career move.
what our people say
what our people say
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what our people say
what our people say
what our people say
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what our people say
what our people say
what our people say
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Zijiao Li
Tech @ASOS
I love working at ASOS in my team because of the great atmosphere. From day one I already felt like being part of the team, everyone is so friendly, approachable and willing to help. It’s the place where you feel trusted and are given the opportunities & time to explore your full potential. As someone who just relocated to London, I also appreciate the international and cultural diverse environment – it’s ok to be whoever you want to be!
Amy Richardson
Tech @ASOS
As a software engineer with a love for fashion, I feel extremely lucky to be part of a fashion company that priorities technology, innovation and customer experience to the same degree as their clothing.
Si Jobling
Tech @ASOS
As someone who left ASOS after 7 years but came back, it speaks volumes how much I love working at ASOS. The obvious reason is the people, not just in Tech but beyond. There's an unspoken respect and authenticity between everyone who works here
Zijiao Li
Tech @ASOS
I love working at ASOS in my team because of the great atmosphere. From day one I already felt like being part of the team, everyone is so friendly, approachable and willing to help. It’s the place where you feel trusted and are given the opportunities & time to explore your full potential. As someone who just relocated to London, I also appreciate the international and cultural diverse environment – it’s ok to be whoever you want to be!
Amy Richardson
Tech @ASOS
As a software engineer with a love for fashion, I feel extremely lucky to be part of a fashion company that priorities technology, innovation and customer experience to the same degree as their clothing.
Si Jobling
Tech @ASOS
As someone who left ASOS after 7 years but came back, it speaks volumes how much I love working at ASOS. The obvious reason is the people, not just in Tech but beyond. There's an unspoken respect and authenticity between everyone who works here
Zijiao Li
Tech @ASOS
I love working at ASOS in my team because of the great atmosphere. From day one I already felt like being part of the team, everyone is so friendly, approachable and willing to help. It’s the place where you feel trusted and are given the opportunities & time to explore your full potential. As someone who just relocated to London, I also appreciate the international and cultural diverse environment – it’s ok to be whoever you want to be!
Amy Richardson
Tech @ASOS
As a software engineer with a love for fashion, I feel extremely lucky to be part of a fashion company that priorities technology, innovation and customer experience to the same degree as their clothing.
Si Jobling
Tech @ASOS
As someone who left ASOS after 7 years but came back, it speaks volumes how much I love working at ASOS. The obvious reason is the people, not just in Tech but beyond. There's an unspoken respect and authenticity between everyone who works here
what our people say
what our people say
what our people say
what our people say
what our people say
what our people say
what our people say
what our people say
what our people say
what our people say
what our people say
what our people say
what our people say
what our people say
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EXTRAS
Benefits
We’re big on rewarding our ASOSers from day one. Benefits are great when you can flex them! That’s why we offer a wide choice of benefits focused on health, wealth, and your inner self – so you can personalise your reward package in a way that’s best for you. Here’s a taster of what you can get.
Employee Discount
The most asked-about benefit! As an ASOSer, you’ll receive an exclusive employee discount. You can also nominate a family member or friend to share your discount with.
Pension
Retirement might not be on your mind right now, but it’s important to prep for it. We offer matched contributions up to 5% to help you save.
Private Medical Care scheme
If you join our Private Medical Care scheme, you’ll get fast and effective access to medical cover.
Bonus
What we achieve is always a team effort. That’s why we offer a discretionary bonus scheme which rewards you based on our group financial and strategic performance.
Celebratory Day!
Get an extra day off in addition to the 25 days of annual leave you get! Spend it celebrating the big days in life, whether it’s birthdays, cultural holidays, weddings and anything else.
Shuttlebus Service (if you're based in our Leavesden office)
It’s more of a work perk, but we offer a free shuttlebus between Watford station and our office in Leavesden.
Sample Sales
We’ve always got fun things happening in our offices, but the one ASOSers get most excited about is our sample sales. Plus, all proceeds from the sample sale get donated to the ASOS Foundation, which helps our charity partners abroad.
Career Development
You’ll have the opportunity for personalised learning and in-the-moment experiences to create a dynamic and agile learning environment that empowers you to thrive and excel in your role.
Summer Hours
We finish at 3pm on Fridays in June, July and August!! This perk doesn’t mean a dip in your salary – it just gives you extra freedom to enjoy those summer weekends however you want.
Location
Our HQ in London
Our HQ in Camden was once a cigarette factory – now, the iconic Art Deco building has been completely renovated with spacious office areas, ASOS Studios (where we shoot all our products), beauty rooms and a free gym. There’s also a subsidised canteen and café.