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The Trade Desk

Senior Applied Scientist

The Trade Desk · London

Posted 23 days ago

or apply directly on The Trade Desk's site. We never take the application ourselves.

Is this posting real?

This role has been open
23 days
The Trade Desk's roles stay open a median of 45 days
Reposted
No
Salary listed
No
5% of The Trade Desk's roles list one
Ghost-job risk at The Trade Desk
high
97 stale, 3 reposted of 159 open
Hiring momentum
290 roles opened in the last 90 days
↑ up vs. the prior 90 days
Last confirmed on the employer's board
2026-09-17

Measured from postings appearing on and disappearing from The Trade Desk's own greenhouse board since 2026-08-03. Full hiring picture for The Trade Desk.

About this role

As a Senior Applied Scientist at The Trade Desk, you will design and develop AI applications, specifically focusing on the AI Assistant. Your role involves driving the evaluation platform, optimizing prompts, maintaining safety frameworks, and mentoring other scientists and engineers. You will be responsible for turning research into practical applications while collaborating closely with engineering teams throughout the product lifecycle.

Our read on this posting3.0out of 5
benefits
1/5
freshness
4/5
career value
5/5
role clarity
5/5
pay transparency
0/5

Scored from the posting itself — how clearly the role is described, how much it says about pay and benefits, and how recently it was listed. Not a judgement of The Trade Desk as an employer.

What you need

  • 5+ years of experience in a data-driven or applied ML role, or 3+ years with a PhD
  • Hands-on experience with Python and a deep learning framework such as PyTorch
  • Experience with Databricks, Spark, Delta Lake, and Unity Catalog
  • Strong SQL skills
  • Experience tracking experiments and models with MLflow or a similar tool
  • Experience serving models in production

Nice to have

  • Advanced degree in a quantitative field
  • Experience with routing, prompt optimization, or memory systems for agents
  • Hands-on experience with guardrail or safety systems for AI-facing products
  • Experience with orchestration or workflow tooling such as Ray, Airflow, or Dagster

Worth weighing

  • No salary listed
  • The role requires a strong sense of data and model intuition, which may be challenging in a fast-moving environment
  • Expectations for mentoring and guiding others may require significant interpersonal skills
  • The position involves working on an agile, distributed team across multiple time zones, which may affect work-life balance

Summarised from The Trade Desk's posting. Read the full original.

Listed by The Trade Desk on their greenhouse job board, last confirmed open on 2026-09-17. PitchMeAI is not the employer.

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