Member of Technical Staff

Job descriptionMember of Technical StaffLondonFull-time · In-officeApplyArtificial Societies helps organisations understand how real-world audiences think, feel, and respond, without the cost, delay, or limitations of traditional research. We build large-scale simulated populations grounded in real-world data, enabling clients to test messages, strategies, and concepts. Our clients love the ability to receive insights backed by thousands of responses in hours rather than months, and to access previously inaccessible audiences (e.g. investors, CEOs, opinion leaders).

We’re backed by Y Combinator, Point72 Ventures, and Kindred Capital, plus investors from DeepMind and Sequoia Scout, and work with leading organisations across technology, financial services, communications, and public affairs.We’re a lean and highly effective team. We move fast, hold a high bar, and trust each other to own outcomes end-to-end. The culture is collaborative but low-ego: ideas win on merit, not seniority.The problemWe simulate societies: how thousands of specific individuals influence each other and form opinions across a multiverse of scenarios.The combinatorics are as hard as protein folding.

Give 1,000 people a for-or-against position on 10 issues, and there are 103,000 possible group opinion states. DeepMind only has to model 10300 ways a protein can fold. Searching that space fast enough to provide answers in hours, not months, is a frontier machine learning problem.To solve this, we are building a Societal World Model: an AlphaFold for societies. We are already informing strategies for clients with $3T+ in combined market cap.

For a few seconds during one client simulation, we were 2% of Google’s global AI throughput.About the roleWe’re looking for a Member of Technical Staff to advance the frontier of our societal foundation models, working across the stack to improve their training, evaluation, and deployment.You’ll design innovative methods to efficiently train models from real-world observations, reimagine how concepts like auto-regression and diffusion can capture human decision-making, and create the evaluation methodology that tells us how well our simulations match reality.

You’ll work directly with our CEO and our growing research team, while partnering closely with product and forward-deployed engineers to move ideas from a research notebook into production.This role is for someone who wants to do frontier research at the intersection of machine learning and social science and is motivated by applying their work to the world’s most consequential decisions.What you’ll doTrain large-scale models.

Apply frontier ML methods in supervised learning and natural language processing to develop state-of-the-art simulations of individuals, subgroups, and populations.Ground models in data. Develop innovative methods to gather and learn from large-scale behavioural datasets.Own evaluation and calibration methodology. Design the evals, benchmarks, and validation studies that measure simulation fidelity against real-world decisions, and make the results interpretable to the team.Run experiments end-to-end.

Hypothesis, infrastructure, training run, analysis, decision. Build the experimentation infrastructure that lets us iterate fast and trust the numbers.Push the frontier. Write, critique, and publish academic content to frame how the world understands and evaluates synthetic research.What we’re looking for5+ years of experience in an applied research or research engineering role.Experience in post-training and evaluating LLMs: RL, dataset and reward design, synthetic data, or related training methods.Demonstrated track record of success in deploying trained models in a commercial setting where they generated revenue.Research literacy to navigate and push forward the frontier of ML research and its applications in behavioural science.Python-strong: our simulation engine is Python-based, and this role lives in Python day-to-day.Nice to haveInterdisciplinary experience in behavioural science, computational social science, psychometrics, statistics, complexity science, or a related empirical field.AI-pilled: motivated to foster an environment where AI agents make meaningful contributions across the research, product-engineering, and commercial deployment stack.Experience scaling an ML research team in an industry setting.LogisticsLocation: London (Holborn), in-office.

We build better together, and this role is no exception.Salary: Competitive with lab market rates.Why join nowIf you want to work on something truly frontier, this is it. You’ll be working directly with some of the smartest people on the planet, on one of the hardest problems humanity has yet to solve. In a world on the brink of exponential, recursive change, there has never been a more important time to help society understand itself.Apply now