Depop

SeniorMachineLearningScientist

London, United Kingdom FULL TIME Remote Friendly
Market Sentiment
HIGH DEMAND

Neural analysis suggests this role is
optimal for Senior candidates.

The Brief

“Senior Machine Learning Scientist at Depop. Skills: Machine Learning, Deep Learning, Large Language Models, ML System Design, Production ML. Own end-to-end machine learning solutions, from problem framing and data strategy through to modelling, deployment, and iteration in production. Design and build scalable ML systems to detect fraud, abuse, and policy violations in user-generated content across text and multimodal domains”

Industry & Context.

Problems you'll solve

operate in ambiguous and adversarial environments; define problems; shape solutions; deliver robust systems that scale; own problems end-to-end; operate in ambiguous environments; make pragmatic technical decisions

What They're Looking For.

Must Have

designing, deploying, and iterating on machine learning systems that deliver measurable impact in production environments, foundation in machine learning and deep learning, hands-on experience using frameworks such as PyTorch and modern architectures (e.g. Transformers, large language models), Experience applying ML in real-world, noisy, and adversarial domains, such as trust & safety, fraud, or abuse detection, Proficiency in Python, experience writing production-quality code, solid understanding of data pipelines, model training workflows, and MLOps practices, Demonstrated ability to own problems end-to-end, operate in ambiguous environments, make pragmatic technical decisions, collaboration and communication skills, ability to influence cross-functional partners and stakeholders

Nice to Have

Experience building ML systems for trust, safety, fraud, or policy enforcement use cases, Hands-on experience fine-tuning, evaluating, or deploying large language models in production settings, Experience with multimodal modelling (e.g. text + image), Familiarity with human-in-the-loop systems or moderation workflows, Experience with Databricks, PySpark, or large-scale data processing systems

What You'll Do.

Own end-to-end machine learning solutions

from problem framing and data strategy through to modelling

and iteration in production

Design and build scalable ML systems to detect fraud

and policy violations in user-generated content across text and multimodal domains

Lead the development and application of LLM-based approaches

including model selection

Define and drive experimentation strategy

including offline evaluation and online testing

to rigorously measure impact and inform product decisions

evolving problem spaces

proactively identifying new risks and shaping detection strategies in partnership with Trust

Collaborate cross-functionally to translate business and safety goals into effective

production-ready ML systems

influencing trade-offs and priorities

Communicate clearly and effectively with both technical and non-technical stakeholders

articulating approaches

How You'll Work.

Team & Collaboration

Collaborate cross-functionally to translate business and safety goals into effective, production-ready ML systems, influencing trade-offs and priorities; Communicate clearly and effectively with both technical and non-technical stakeholders, articulating approaches, trade-offs, and impact; partnership with Trust, Policy, and Product

Communication Scope

Communicate clearly and effectively with both technical and non-technical stakeholders, articulating approaches, trade-offs, and impact; collaboration and communication skills

Process & Methodology

Own end-to-end machine learning solutions, Define and drive experimentation strategy, shape solutions, deliver robust systems that scale

Full Job Description

**Company Description** Depop is a peer-to-peer circular fashion marketplace where anyone can buy, sell and discover secondhand fashion. Our mission is simple: to make fashion circular by making secondhand as exciting and rewarding as buying new. Founded in 2011, Depop’s diverse community has helped move resale into the mainstream, where buying secondhand is no longer an alternative, but how people of different ages now engage with fashion. Today, more than 56 million registered users come to Depop to find great value, express their own personal style and give clothes a longer life. We believe that everything you want already exists, and our role is to help people discover it. Powered by a team of over 500 people, our company is headquartered in London, with offices in New York. In 2021, Depop became a wholly-owned subsidiary of Etsy - the global marketplace for unique and creative goods - and continues to operate as a standalone company. For more information, visit [**_www.depop.com_**](http://www.depop.com)**** We aim to create an inclusive environment where everyone is welcome, no matter who they are or where they’re from. Just as our platform connects people globally, we believe our workplace should reflect the diversity of the communities we serve. We thrive on the power of different perspectives and experiences, knowing they drive innovation and bring us closer to our users. We’re proud to be an equal opportunity employer, providing employment opportunities without regard to age, ethnicity, religion or belief, gender identity, sex, sexual orientation, disability, pregnancy or maternity, marriage and civil partnership, or any other protected status. We’re continuously evolving our recruitment processes to ensure fairness and are open to accommodating any needs you might have. If, due to a disability, you need adjustments to complete the application, please let us know by sending an email with your name, the role to which you would like to apply, and the type of

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