Healf is Europe's fastest-growing company.
Number one on the FT1000, number one on the Sifted 100.
From £1m to over £100m in under three years, with a small, talent-dense team and an electric culture with day one founder intensity.
Now we're aiming for £1bn in the next three.
We curate the world's best wellbeing brands across The Four Pillars™: EAT, MOVE, MIND, SLEEP.
That's the first chapter.
The next chapter is harder and more interesting.
We are moving from one market to many, from e-commerce to a technology platform, and from curating wellbeing to defining it.
We are a health company, so we think we should act like one.
At its fullest expression, Healf redefines what wellbeing means for tens of millions of people.
You will own the decisions that shape how Healf connects wearable data, behavioural signals, and personalised engagement at scale.
This is a 0-to-1 role with direct access to the CTO and founder.
What You Will DoDefine and build: the technical architecture for the Deeper Engagement team from the ground upOwn: wearable data integrations, backend APIs, and the mobile experience end-to-endMake the hard infrastructure decisions: stack, data model, and system design choices that will shape the product for yearsPartner with: product and the CTO to translate the engagement vision into a production system that improves continuouslySet the standard: for how the team builds, ships, and iterates as it growsWhat We Are Looking For0-to-1 experience: you have built something meaningful from scratch and understand what that demandsStrong Python backend engineeringReact Native or equivalent mobile development experienceHigh ownership: when a problem is yours, you see it through completelyComfort with ambiguity — you can work from a vision rather than a detailed specNice to HaveWearable or health data integration experience with devices lik.