Job description

Connect to your opportunity

• Role: Data Science and AI Consultant
• Roles available at multiple seniority levels - suitable for applicants with 3-10+ years' experience
• Base Office Location: Bristol, London, or Manchester
• Mandatory Requirement: Active UK Developed Vetting (DV) security clearance, or active UK Security Check (SC) with eligibility for DV clearance.

We are seeking talented data science, machine learning and AI practitioners to join our multidisciplinary team, with a focus on clients in the Defence and Security sector.

You will work on complex, mission-focused problems where data, AI and technology can help clients make better decisions, improve operational outcomes and deliver lasting impact. The work is varied: you may be exploring new techniques, building prototypes, developing production-ready solutions, shaping client strategy, or helping teams understand how AI can be applied safely and effectively in sensitive environments.

As a practitioner in our team, you will:

• Apply data science, machine learning and AI techniques to solve complex client problems.

• Research, prototype and develop innovative solutions that deliver real-world impact.

• Work across the lifecycle, from understanding user needs and exploring data through to building, evaluating, scaling and managing AI-enabled services.

• Help implement new techniques and technologies, including generative AI and agentic AI patterns where appropriate.

• Produce high-quality technical outputs, analysis, reports and presentations.

• Work closely with multidisciplinary teams, including engineers, designers, delivery leads, analysts and client stakeholders.

• Shape new propositions and support the development of future client opportunities.

• Contribute to team learning, mentoring and practice development.

• Build a deep understanding of the Defence and Security sector, including the operational, ethical, security and delivery considerations that shape successful AI solutions.

Connect to your skills and professional experience

All applicants must hold UK security clearance to SC (with eligibility for DV) or DV level.

We are looking for candidates who combine strong technical capability with the ability to communicate clearly, work collaboratively and explain the value of their work to clients.

Essential skills and experience:

• Hands-on experience applying data science, machine learning or AI techniques in Defence and Security, the wider public sector, industry or academia.

• Practical experience using Python or equivalent tools to analyse data, develop models or build AI-enabled solutions.

• Understanding of common data science and machine learning approaches, such as statistical modelling, supervised and unsupervised learning, deep learning, transformers, generative AI and agentic AI patterns.

• Ability to assess the suitability, limitations and risks of different AI/ML techniques for real client use cases.

• Experience working across at least part of the data science or machine learning lifecycle, from exploration and prototyping through to evaluation, deployment or operational use.

• Strong communication skills, including preparing clear reports and presentations and explaining complex technical issues to diverse audiences.

• Ability to build productive relationships with colleagues, clients and multidisciplinary teams.

• Evidence of contribution beyond individual delivery, such as mentoring, practice development, proposition development or supporting bids.

We do not expect candidates to have experience across all the areas below, but we are particularly interested in people who can bring depth in one or more of them:

• Applying AI/ML techniques to text, audio, imagery, video, geospatial, graph or multimodal data.

• Developing solutions using machine learning frameworks such as PyTorch, TensorFlow, scikit-learn or Hugging Face.

• Using cloud-based data science and machine learning services across AWS, Azure, GCP or equivalent platforms.

• Developing high-quality, maintainable code and working with software engineering practices such as version control, testing, code review and CI/CD.

• Working with MLOps or workflow tools such as MLflow, Kubeflow, Argo or equivalent frameworks.

• Scaling models or analytical services for enterprise or operational use.

• Applying statistical methods, model evaluation techniques and uncertainty analysis.

• Understanding responsible AI, including fairness, explainability, transparency, robustness, privacy, security and human oversight.

• Working in secure, sensitive or mission-critical environments.
Our hybrid working policy

You'll be based in London, Bristol or Manchester with hybrid working.

At Deloitte we understand the importance of balancing your career alongside your home life. That's why we'll support you to work flexibly through our hybrid working policy. Depending on the requirements of your role, you'll have the opportunity to work in your local office, virtual collaboration spaces, client sites and remotely. You'll get the chance to me et face to face when needed, while you collaborate and learn from colleagues, share your experiences, and build the relationships that will fuel your career and prioritise your wellbeing. Please check with your recruiter for the specific working requirements that may apply for your role.
Connect to your business - Technology and Transformation

Distinctive thinking, deep expertise, innovation and collaborative working. That's what connects us. That's what makes us Deloitte. If you want to help solve some of the biggest tech and transformational challenges around, join us. Together, we'll make an impact that matters.
Engineering, AI and Data

We lead transformation at the heart of our clients; re- engineering the core of our clients' organisations, helping to unleash growth, and creating better futures for their customers, citizens and employees.
Connect to your Industry

Do you want to be at the heart of some of the biggest and most ambitious programmes undertaken to keep our country safe?

We are proud of the impact we have with our Defence & Security clients, the strength of our relationships, and the variety of our skills and expertise that we bring to help them achieve their mission.

We are growing our teams across all of Technology and Transformation. If you are cleared to DV level and want to grow your career in this sector, we are very keen to hear from you.
Connect to your career at Deloitte

Deloitte drives progress. Using our vast range of expertise, we help our clients become leaders wherever they choose to compete. To do this, we invest in outstanding people. We build teams of future thinkers, with diverse talents and backgrounds, and empower them all to reach for and achieve more.

What brings us all together at Deloitte? It's how we approach the thousands of decisions we make every day. How we behave, our beliefs and our attitudes. In other words: our values. Whatever we do, wherever we are in the world, we lead the way , serve with integrity , take care of each other , foster inclusion , and collaborate for measurable impact . These five shared values lead every decision we make and action we take, guiding us to deliver impact how and where it matters most.

Personal independence

Regulation and controls are standard practice in our industry and Deloitte is no exception. These controls provide important legal protection for both you and the firm. We are subject to a number of audit regulations, one of which requires that certain colleagues abide by specific personal independence constraints (e.g., in relation to any financial interests and employment relationships). This can mean that you and your "Immediate Family Members" are not permitted to hold certain financial interests (shares, funds, bonds etc.) with audit clients of the firm, and also prohibitions on certain employment relationships (e.g., you are not permitted to hold a secondary employment role with SEC audit clients of the firm whilst being employed by the firm). The recruitment team will provide further detail as you progress through the recruitment process or you can contact the Independence team upon request.
Connect with your colleagues

"What attracted me to Deloitte were the endless opportunities and the collective experience of other like- minded individuals. Deloitte's clients include many of the world's largest organisations; I wanted to be part of a team that made a difference that I could be proud of." -Dan, Technology and Transformation
Our commitment to you

Making an impact is more than just what we do: it's why we're here. So we work hard to create an environment where you can experience a purpose you believe in, the freedom to be you, and the capacity to go further than ever before.

We want you. The true you. Your own strengths, perspective and personality. So we're nurturing a culture where everyone belongs, feels supported and heard, and is empowered to make a valuable, personal contribution. You can be sure we'll take your wellbeing seriously, too. Because it's only when you're comfortable and at your best that you can make the kind of impact you, and we, live for.

Your expertise is our capability, so we'll make sure it never stops growing. Whether it's from the complex work you do, or the people you collaborate with, you'll learn every day. Through world-class development, you'll gain invaluable technical and personal skills. Whatever your level, you'll learn how to lead.
Connect to your next step

A career at Deloitte is an opportunity to develop in any direction you choose. Join us and you'll experience a purpose you can believe in and an impact you can see. You'll be free to bring your true self to work every day. And you'll never stop growing, wh atever your level.

Discover more reasons to connect with us, our people and purpose-driven culture at deloitte.co.uk/careers

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