Lead Data Scientist

The Role in 30 Seconds

1. First data scientist at a funded London startup (two founders with proven track record)
2. Build ML systems that predict future mobile app conversions weeks in advance
3. Own the entire ML stack with direct business impact

What We Do

Day30 helps subscription apps improve paid acquisition ROI by providing predictive signals to optimise ad spend. We connect directly to mobile measurement partners (MMPs) to analyse behavioural event data, build ML models that predict high-value conversions weeks in advance, and deliver these predictions to advertising platforms without compromising user privacy.

We're a two-founder London startup combining deep expertise in performance marketing and machine learning. As our first data scientist, you'll be founder-adjacent, working...