Join the team responsible for building the data and machine learning products that power customer experiences, marketing effectiveness and commercial decision-making across ASOS.
As a Senior Data Engineer in our Customer & Marketing Machine Learning team, you will play a key role in developing the data foundations that enable machine learning models, pricing optimisation, customer analytics, media measurement and marketing decisioning at scale. The team brings together Data Engineers, Machine Learning Engineers and Applied Scientists to deliver end-to-end machine learning products that create measurable business impact.
This is an opportunity to work with large-scale customer, marketing and commercial datasets, building robust data solutions that help transform how ASOS understands, engages and serves millions of customers.
What you'll be doing
Designing and building scalable data pipelines that support machine learning, analytics and data science initiatives.
Developing high-performance data solutions using Python, Spark, Databricks and Azure technologies.
Creating and maintaining datasets that power customer, marketing, pricing and forecasting use cases.
Collaborating closely with Applied Scientists and Machine Learning Engineers to operationalise machine learning models.
Designing data models and architectures that enable reliable, trusted and accessible data across the business.
Improving data quality, observability, lineage and monitoring capabilities across critical data products.
Supporting the delivery of media measurement, customer value, pricing and personalisation initiatives.
Optimising data processing workloads for performance, scalability and cost efficiency.
Driving best practices across software engineering, data engineering and platform development.
Providing technical leadership through design reviews, mentoring and knowledge sharing.
Working with stakeholders across Customer, Marketing and Commercial functions to turn business challenges into scalable data solutions.
Contributing to the long-term evolution of ASOS's machine learning and data capabilities.
/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.
But how are we showing up? We’re proud members of Inclusive Companies, are Disability Confident Committed and have signed the Business in the Community Race at Work Charter, and we placed 8th in the Inclusive Top 50 Companies Employer list.
Everyone needs some help showing up as their best self. Let our Talent team know if you need any adjustments throughout the process in whatever way works best for you.
/02 Job Qualifications
We're interested in people who can demonstrate many of the following capabilities. If your experience doesn't match every requirement exactly, we still encourage you to apply.
You are likely to have:
Significant experience delivering data engineering solutions within cloud-based environments.
Strong expertise in Python and experience developing production-grade data pipelines and data products.
Experience working with Databricks, Spark and distributed processing technologies.
Experience designing and operating large-scale data platforms using Azure, AWS or GCP.
Deep understanding of data modelling, data architecture and modern data engineering principles.
Experience enabling data science, analytics or machine learning workloads through robust data infrastructure.
Strong understanding of CI/CD, Infrastructure as Code, automated testing and observability practices.
Experience working with large-scale customer, marketing, commercial or behavioural datasets.
Proven ability to lead the design and delivery of complex technical solutions from concept through to production.
Experience mentoring engineers and helping shape technical direction within a team.
Strong stakeholder management and communication skills, with the ability to partner effectively with technical and non-technical audiences.
A passion for solving challenging data problems and enabling teams to make better decisions through data.Experience supporting machine learning platforms, MLOps or model operationalisation.
Experience with pricing, marketing analytics, recommendation systems or customer analytics.
Experience working in eCommerce, retail or consumer-facing digital businesses.
/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
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
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
what our people say
what our people say
Meet The Team
Meet Zijiao Li -
Tech @ ASOS
Meet Amy Richardson -
Tech @ ASOS
Meet Si Jobling -
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!
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.
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
our business values
our business values
our business values
our business values
our business values
our business values
our business values
our business values
our business values
our business values
our business values
our business values
our business values
our business values
our business values
our business values
loading
We are Customer First
We couldn’t be ASOS without our customers.
Across every behaviour, value, and all that we do, we see everything through our customers’ eyes. That means never taking anything for granted and always zeroing in on every single detail. So we can always bring our best as a team, and our customers can have an amazing experience, every time.
We are Authentic
We work together to be honest, transparent, and our full authentic selves.
This is our ASOS. Our culture, built on collaboration and togetherness, and supported by what’s real and honest. We know that we win bigger when we win as a diverse team. That means celebrating our differences and using them to help us stand out from the crowd, without losing our authenticity and individuality.
We are Brave
We challenge each other to aim high and reach our potential.
Doing nothing gets us nowhere. We may be proud of everything we’ve done so far, but there’s still so much more to explore. We believe we can always be wiser, faster, stronger, bigger, braver, kinder…so asking ‘why’ isn’t just a question, it’s a necessity. We use our voice to drive us forward, speaking up on the things our people and customers care about and using our curiosity to create possibility.
We are Creative
We know innovation leads to inspiration – it’s what makes us stronger
Change is in our DNA. By acting fast and staying one step ahead of the curve, we can be a leader, not a follower. But for our products and platform to be innovative, they have to be fuelled by creative passion and a deep understanding of our customers and our people.
We always Deliver
We couldn’t be excellent without evidence – so whatever we’re doing, we have proof of why we’re doing it.
It takes facts and data to tell our stories and help us make our decisions in the most effective way possible. This means we can do what we say and own what we do, no matter how long it takes us to do it. We aren’t about nonsense ifs, buts and maybes, we’re about creating an ASOS that’s built for future success on delivered success.
Our Benefits
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.