Lead Data Engineer

Data is the heart of everything Obsero does, and it has to just work. The AI platforms we track change all the time, often without telling anyone, and when they do we need to know about it first, adapt quickly and keep the numbers correct. We also want to get there efficiently, so we're never paying more for data than we need to.

And as new AI platforms launch, we need to be tracking them too, wherever a brand's customers are asking.

That's why we want someone who owns all of this without being asked: building the alerts and systems that catch changes, making the calls on cost and coverage, and coming to us the moment the data tells us something has changed. You'll share the load with the founders and give everything we learn from the data a foundation we can trust.

• We've just raised $1.2m, led by SFC Capital, to build specialist AI agents trained on the GEO playbook from a year of client work

• In our first year we captured and analysed over 10 million AI answers, and that number is growing fast

• We're a small team, so you'll shape how the data side is built from the start rather than inherit decisions someone else made

• Meaningful equity, alongside a salary of £80,000 to £100,000

• AI search is one of the fastest-moving areas in marketing, and the data you own is what every client decision rests on

Obsero tracks how brands are cited and recommended across ChatGPT, Gemini, Perplexity, Google AI Mode, Google AI Overviews and Claude, capturing AI answers every day and turning them into the visibility, citation and sentiment data that marketing teams act on.

Everything we sell is built on data, and you will own it. That covers how we capture AI answers from every platform and vendor, how we model them into one consistent schema, how we use LLMs to pull citations, brand mentions and sentiment out of them, and how we know every single day that the numbers clients see are right.

This is a lead role reporting to a founder, so we want someone who looks at the data, tells us plainly when something is not right and comes back with what we need to do about it, rather than waiting for a ticket to arrive. You'll work closely with our lead data scientist, who turns the data you own into the GEO playbook and the recommendations our customers act on.

• Data quality. The checks, monitoring and alerting that catch broken, stale or inconsistent data before a client does, along with the processes the rest of the team follows to keep it that way

• Coverage. Keeping our tracking current as platforms change and new ones launch, so we can follow a brand wherever its customers are asking

• Early warning. Spotting when the data looks wrong or the platforms behave differently, and telling us what it means for the product and our client work before anyone else notices

• Capture. Ingestion from AI platforms and third-party data vendors, including testing new vendors and switching between them without leaving gaps in a client's history

• Modelling. One standard schema across every vendor and platform, so citation parsing is consistent and a fix is made once rather than vendor by vendor

• AI in the pipeline. LLM-based extraction, classification and sentiment, the machine learning behind how we score and spot anomalies in what we capture, and the evaluations that prove the output is accurate and keep it accurate as the models change underneath us

• The data layer on AWS. Our Parquet data lake, the pipelines that feed it and the query layer that lets clients analyse long date ranges quickly

• Technology partners. Finding, assessing and recommending the vendors, models and tools we build on, from data providers to LLM platforms, and making the case for when to switch

• The data behind our agents. T…