Available for permanent & fixed-term roles — see the work page or get in touch
Spencer Stern

I'm a product and experimentation analyst based in London. I spent nine years at Reach plc — one of the UK's largest digital publishers — moving from content and operations into data over time. For the last four of those years, the work was product-facing: designing and analysing A/B tests, investigating user behaviour with BigQuery and Athena, and turning results into recommendations for product managers and senior stakeholders.

In parallel, I've spent the better part of two decades researching and writing about Socionics — a personality theory developed in the 1970s by Lithuanian researcher Aushra Augusta, built on Jungian foundations and centred on how different types interact with each other rather than just who they are individually.

The analyst work and the personality research turn out to share more common ground than they might appear to. Both are fundamentally about understanding patterns in human behaviour — one at the population level through data, the other at the individual level through a theoretical framework. The methods are different. The underlying curiosity is the same.

The books

I wrote Your Social World Explained as the first serious English-language treatment of what I call the SLIDE System — a modernisation of classical Socionics designed to make the theory accessible without sacrificing its rigour. That was followed by the Socionics Made Simple series: 16 Kindle volumes, one for every type in the system.

The free reference site for all of this is Socionics Insight.

The analyst work

I'm currently available for permanent and fixed-term product analyst and experimentation roles at large tech companies. If you're looking for someone who can operate independently from day one — see the work page or get in touch.