Applied Scientist (AI)

TL;DR

Applied Scientist (ML/Statistics): Developing machine learning and statistical models to optimize marketing strategy and customer experience with an accent on causal understanding, attribution, and incrementality. Focus on building production-ready solutions, designing rigorous experiments, and translating complex analytical outputs into measurable business impact.

Location: Must be based in London (HQ)

Company

hirify.global is a global online fashion retailer dedicated to providing customers the confidence to be whoever they want to be.

What you will do

• Design and develop ML and statistical models to drive marketing and customer decision-making.
• Solve complex causal problems such as attribution, incrementality, and marketing effectiveness.
• Build and run experiments to evaluate models and inform product and business strategy.
• Collaborate with engineers to deploy models into scalable, production environments.
• Translate complex analytical outputs into clear, actionable insights for stakeholders.
• Contribute to shared codebases, experimentation frameworks, and best practices.

Requirements

• Experience applying machine learning or statistical methods in practical or production-adjacent settings.
• Proficiency in at least one programming language commonly used in ML and familiarity with relevant frameworks.
• Solid understanding of statistical concepts and software development best practices.
• Ability to manage work and collaborate with both technical and non-technical stakeholders.
• Must be based in London to work from the company HQ.

Nice to have

• Interest or experience in Bayesian methods, causal inference, or MMM.
• Academic publications or conference contributions in the field of ML and statistics.

Culture & Benefits

• Exclusive employee discount and sample sales.
• 25 days paid annual leave plus an extra celebration day.
• Private medical care scheme and matched pension contributions up to 5%.
• Discretionary bonus scheme based on group financial and strategic performance.
• Summer hours: early finish at 3pm on Fridays during June, July, and August.
• Free shuttlebus service available between Watford station and the Leavesden office.