Data Scientist - Defence

Salary: £65,000 - 100,000 per year

Requirements:

• In-depth knowledge of common machine learning techniques, their applications, limitations, and methods for adapting them to achieve results at scale.
• MS or PhD in Computer Science, Electrical Engineering, Statistics, or an equivalent field.
• Applied AI experience, including generative AI, agentic solutions, regression and classification, and supervised and unsupervised learning.
• Strong mathematical background in linear algebra, calculus, probability, and statistics.
• Experience with scalable machine learning, such as MapReduce or streaming.
• Ability to drive projects and work independently as well as in a team.
• Motivation, initiative, and a desire to make a difference.
• Excellent verbal and written communication skills.
• Preferred: Experience with JavaScript and prototyping languages such as Python and R; Java and Scala experience is a plus.
• Preferred: A portfolio of projects, such as GitHub projects or papers.
• Must hold, or be able to obtain and maintain, the required UK Security Clearance ([SC / NATO]). Eligibility is set by the contracting authority and typically requires at least five years of continuous UK residence.

Responsibilities:

• Lead the research, design, implementation, and deployment of machine learning algorithms, intelligent agents, and optimization solutions for enterprise applications using the C3 AI Suite.
• Help our customers build their own applications on the C3 AI Suite.
• Contribute to the design and implementation of new C3 AI Suite features.
• Analyze model performance across asset fleets, diagnose issues such as low risk scores or false positives, and recommend hyperparameter adjustments.
• Work with data and subject matter experts from our teams and customer teams to find, understand, validate, interpret, and correctly use new data elements.
• Work with data scientists, software engineers, and subject matter experts to define analytics capabilities that support customer decision-making and digital transformation.
• Identify suitable machine learning algorithms and implement them on the C3 AI Platform so they can run at scale.

Technologies:

• Agentic AI
• AI
• GitHub
• Support
• Java
• JavaScript
• Machine Learning
• Python
• Scala
• Security

More:

We are C3 AI, an enterprise AI application software company. Our integrated offerings include the C3 Agentic AI Platform for developing, deploying, and operating enterprise AI applications; industry-specific SaaS applications; and domain-specific generative AI offerings. As part of our Data Science team, you will work with some of the worlds largest companies on AI-powered enterprise applications. This frontline role supports consequential AI programs in UK and European defense, including predictive maintenance, Digital Targeting, and logistics in contested and degraded environments. These live programs have real operational stakes and are delivered in secure settings across the UK MOD, NATO, and allied European partners. Some travel to customer and partner locations is expected. We offer excellent benefits, competitive compensation, and a generous equity plan. We are an Equal Opportunity and Affirmative Action Employer and do not discriminate on the basis of legally protected characteristics, including disability and veteran status.

last updated 40 week of 2026