Machine Learning Scientist - Recommendations

At Depop, machine learning is integral to delivering a personalised experience for our users. As a Machine Learning Scientist, you will work on building state-of-the-art models to power Depop's app, serving millions of personalised recommendations to users daily. You'll work on recommendation problems such as representation learning, cold start users and listings, tuning relevance, diversity & serendipity. The solutions you build will primarily use large volume data and deep learning techniques to deliver recommendation systems that operate at scale with high performance. Responsibilities You will:

• Research, design and deliver machine learning solutions to improve our recommendations
• Work closely with Product, Insights and Engineering partners to deliver value driving improvements to our recommendation systems
• Set up and conduct large-scale experiments to test hypotheses and drive product development
• Stay up to date with research in recommendation systems and modern deep learning, applying new techniques where appropriate
• Participate in team ceremonies including agile rituals, technical design discussions, and roadmap planning
• Clearly communicate technical approaches, results, and trade-offs to both technical and non-technical partners

• Experience working as a Machine Learning Scientist, with a track record of delivering models to solve industry-scale problems
• Solid understanding of machine learning concepts, familiarity working with common frameworks such as Transformers, PyTorch or TensorFlow
• Proficiency in Python, with the ability to write production-grade code and a good understanding of data engineering & MLOps
• Collaborative and humble team player with an ability to work with cross-functional teams, including technical and non-technical stakeholders
• Passion for learning new skills and staying up-to-date with ML algorithms

Bonus points

• Experience working on learning-to-rank, search or recommendation models
• Experience with deep learning & large language models
• Experience with experiment design and conducting A/B tests
• Experience with Databricks and PySpark
• Experience working with AWS or another cloud platform (GCP/Azure)

• PMI and cash plan healthcare access with Bupa
• Subsidised counselling and coaching with Self Space
• Cycle to Work scheme with options from Evans or the Green Commute Initiative
• Employee Assistance Programme (EAP) for 24/7 confidential support
• Mental Health First Aiders across the business for support and signposting

Work/Life Balance:

• 25 days annual leave with option to carry over up to 5 days
• 1 company-wide day off per quarter
• Impact hours: Up to 2 days additional paid leave per year for volunteering
• Fully paid 4 week sabbatical after completion of 5 years of consecutive service with Depop, to give you a chance to recharge or do something you love.
• Flexible Working: MyMode hybrid-working model with Flex, Office Based, and Remote options *role dependant
• All offices are dog-friendly
• Ability to work abroad for 4 weeks per year in UK tax treaty countries

Family Life:

• 18 weeks of paid parental leave for full-time regular employees
• IVF leave, shared parental leave, and paid emergency parent/carer leave

Learn + Grow:

• Budgets for conferences, learning subscriptions, and more
• Mentorship and programmes to upskill employees

Your Future:

• Life Insurance (financial compensation of 3x your salary)
• Pension matching up to 6% of qualifying earnings

Depop Extras:

• Employees enjoy free shipping on their Depop sales within the UK.
• Special milestones are celebrated with gifts and rewards!