Data Scientist

TL;DR

Data Scientist (Adtech/Software): Developing and deploying production-ready machine learning models to optimize programmatic advertising, content moderation, and audience analysis with an accent on privacy, safety, and youth digital engagement. Focus on solving complex problems with noisy, non-linear data and collaborating across product, engineering, and behavioral insights teams.

Location: London, UK (Hybrid)

Company

hirify.global is an award-winning technology company powering the youth digital ecosystem with proprietary advertising and gaming products focused on safe, privacy-preserving engagement for under-18 audiences.

What you will do

• Collaborate with product teams, engineers, and end users to identify and solve business problems.
• Develop and maintain production-ready machine learning models for programmatic auction optimization, content understanding, moderation, and audience categorization.
• Test, validate, and monitor models to ensure performance and safety.
• Leverage behavioral insights to predict campaign impact and audience clusters.

Requirements

• Location: Must be based in or near London, UK with hybrid work format
• Experience with Python, SQL, data manipulation libraries (Pandas, Numpy), and standard ML algorithms (Scikit-learn).
• Quantitative degree or equivalent experience with strong statistics knowledge.
• Curiosity and ability to work with noisy, non-linear data.

Nice to have

• Strong mathematics, Bayesian modeling, causal inference, and postgraduate degree.
• Experience in adtech, martech, marketing, or advertising domains.
• Full ML model lifecycle experience including programmatic use and fine-tuning of LLMs.
• Experience with big data tools (pySpark), cloud platforms (AWS), APIs (FastAPI), version control (GitHub), and workflow management (Jira).
• Good communication skills for diverse audiences and clean modular coding practices with tests.

Culture & Benefits

• Inclusive and diverse community valuing individuality and belonging.
• Encouragement to own impact and grow professionally in a fast-paced environment.
• Focus on privacy, safety, and building a better internet for youth audiences.