Senior Data Scientist - Fixed-Term Contract

About the role

Join the Frontier team to shape the future of our Decision Intelligence Platform by delivering AI-powered digital twins that elevate organisational decision-making. As a Senior Data Scientist, solving highly complex and consequential problems and helping enterprise users interact with cutting-edge AI. This is a unique, entrepreneurial role where you will drive real value by combining scientific rigor with a business-focused approach to advance our AI Agent and Decision Hub capabilities

What you'll be doing:

Designing and building agents in high-consequence environments, where outputs need to be validated to a high standard

Performing exploratory data analysis, model building, validation, and performance monitoring.

Leading data science efforts within cross-functional delivery teams—partnering with engineers, designers, and product leads for successful outcomes.

Understanding deeply core customer problems to ensure technical solutions drive real value

Translating real-world problems into technical strategies and measuring model impact with scientific rigor

Who we're looking for:

You have senior-level experience in data science or quantitative research

You’re proficient in Python and essential libraries (NumPy, Pandas, scikit-learn), plus familiarity with a deep-learning framework (e.g., TensorFlow, PyTorch)

You possess a strong foundation in statistics and mathematics

You’re experienced across the full data science toolkit—including supervised/unsupervised learning, time-series, Bayesian methods, and model validation—and can develop new algorithms when needed

You bring a leadership mindset centred on technical excellence, team growth, and a collaborative culture

You exhibit scientific rigor and a business-focused approach: translating problems into technical strategies and measuring model impact.

You’re product-oriented, deeply understanding user needs and how Frontier can deliver value to them

It would be great if you had experience building and evaluating agents using eval-driven development (although not a must-have)

The Interview Process

Talent Team Screen (30 minutes)

Technical Interview (90 minutes)

Principles Interview (45 minutes)
#LI-PRIO

Our Recruitment Ethos

We aim to grow the best team - not the most similar one. We know that diversity of individuals fosters diversity of thought, and that strengthens our principle of seeking truth. And we know from experience that diverse teams deliver better work, relevant to the world in which we live. We’re united by a deep intellectual curiosity and desire to use our abilities for measurable positive impact. We strongly encourage applications from people of all backgrounds, ethnicities, genders, religions and sexual orientations.

Some of our standout benefits:

Unlimited Annual Leave Policy

Private healthcare and dental

Enhanced parental leave

Family-Friendly Flexibility & Flexible working

Sanctus Coaching

Hybrid Working (2 days in our Old Street office, London)

If you don’t feel you meet all the requirements, but are excited by the role and know you bring some key strengths, please do apply or reach out to our Talent Acquisition team for a confidential chat - Please know we are open to conversations about part-time roles or condensed hours.