Data Scientist (AdTech, Gaming)

TL;DR

Data Scientist: Design and implement machine learning models for user recommendations and optimize incentive structures with an accent on gaming user acquisition, in-app ROAS, and scalable data-informed decision making. Focus on complex experimentation design, uplift modelling, and establishing technical best practices for data science.

Location: Hybrid in London

Salary: £140,000–£220,000

Company

hirify.global is a rapidly growing startup aiming to become Germany’s second bootstrapped unicorn, focusing on rewarding a community of over 60 million users for engaging with advertisers' products to acquire new users for large companies.

What you will do

• Design and implement machine learning models to personalize recommendations for users, optimizing for performance, engagement, and conversion within gaming user acquisition.
• Build and optimize incentive reward structures, focusing on motivating and retaining users while improving in-app ROAS.
• Collaborate with data analytics and engineering to improve data structures, visibility, and traceability.
• Establish technical best practices for the team, including documentation, data product ownership, measurement plans, and experimentation frameworks.
• Define and help implement KPIs that align team output with business goals, ensuring every model, dashboard, and analysis has a clear purpose and outcome.
• Mentor and support both data scientists and analytics engineers, driving high standards and helping the team scale effectively.

Requirements

• Strong experience building and deploying machine learning models in a product-driven environment, ideally in Gaming, AdTech, gambling, or user-incentive systems.
• Deep statistical and modelling knowledge for complex experimentation design, uplift modelling, and causal impact estimation of counterfactual outcomes.
• Strong understanding of data engineering workflows and modern data stack tools (e.g., DBT, Airflow, K8s).
• Proficiency in Python and SQL; experience with cloud platforms (GCP preferred) and Terraform.
• Excellent communication and leadership skills, with the ability to drive clarity, create structure, and bring stakeholders on board.
• English: B2 required

Culture & Benefits

• Opportunity to have a real impact and grow alongside a profitable startup.
• High-growth environment that encourages project ownership and raising the bar.
• Generous bonus scheme to ensure great, proactive work is valued.
• Commitment to fostering talent, evaluating all skill levels, and providing clear paths for growth.
• Embrace and celebrate diversity as an equal opportunity employer.