Title: Principal/Lead Mathematician
Rate: £450-£550 Outside IR35
Contract duration: 3 months (Initially)
Start date: January start date!
We're partnering with a highly technical, early-stage organisation building a next-generation, AI-driven decision platform. They're looking for a Principal/Lead Mathematician to own the mathematical foundation that underpins the entire system.
This is a rare opportunity to sit at the heart of product design - translating human problem-solving processes into rigorous mathematical, algorithmic and optimisation models that power summarisation, semantic search, and decision-support workflows.
You’ll lead the design and validation of core algorithms, working closely with Data Scientists and Engineers to embed mathematically sound models into a modular, cloud-native platform.
What you’ll be doing
* Designing end-to-end mathematical models that translate real-world workflows into executable system logic
* Applying algebraic modelling, graph theory, optimisation and statistics to complex, unstructured data problems
* Prototyping and validating algorithms in Python and MATLAB
* Shaping the mathematical backbone of vector search, intent extraction and LLM-driven workflows
* Producing clear, auditable documentation in LaTeX and Jupyter
* Acting as the mathematical authority across the platform and mentoring others where needed
What we’re looking for
* Strong background in applied mathematics, operations research or optimisation
* Proven experience with graph-based models, algorithm design and probabilistic methods
* Comfortable working alongside Data Science and Engineering teams
* Ability to translate abstract, human‑led processes into formal mathematical representations
* Experience supporting AI/ML‑driven systems (theoretical or applied)
This role suits someone who enjoys owning complex problems from first principles, shaping both the theory and its real‑world application in a cutting‑edge technical environment.
If you’re interested in this role or know someone who would be, then please apply with an updated CV and reach out.
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