Mathematician

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.

• 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

• 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.