AI & ML Engineer in London

About the role

The AI & ML Engineering team accelerates the adoption of AI across the business, championing innovation while ensuring our machine learning solutions are robust, scalable, and cost-efficient.

We enable teams to solve problems using existing AI tools where possible and build custom solutions when needed.

Our remit spans AI enablement, agentic systems development, and “conventional” ML engineering for non-Gen AI applications e. g. recommender systems, forecasting models, and more.

We’re looking for an AI & ML Engineer who is passionate about building production‑ready AI and machine learning solutions.

You'll work across a variety of AI initiatives, contributing to the design, implementation and deployment of scalable AI systems.

You will be expected to deliver high-quality AI/ML solutions across the full development lifecycle, from proof of concept through to production and ongoing optimisation.

Working closely with other engineers and stakeholders across the business, you’ll contribute to building reusable platforms, services and best practices while continuously developing your technical expertise.

This role reports to the Lead AI & ML Engineer and sits within the Data function, working as part of a specialist AI engineering team.

You'll contribute to a mix of dedicated AI initiatives and larger cross‑functional projects alongside colleagues from Technology, Data and Product.

Responsibilities

The role covers the full AI/ML engineering lifecycle, from discovery to deployment and monitoring. Responsibilities include

• Designing and implementing agentic systems using techniques spanning RAG, grounding, prompt engineering, and orchestration on a GCP‑first stack.
• Building and maintaining production ML pipelines and services for non‑Gen AI use cases (e. g. recommender systems, customer segmentation models, marketing optimisation modules, leveraging supervised, unsupervised and/or econometric modelling approaches).
• Developing APIs and microservices for AI/ML solutions, ensuring security, scalability, and observability.
• Implementing CI/CD for ML services, writing infrastructure as code, and monitoring for model/data drift and performance.
• Establishing robust guardrails for safe AI usage, including prompt security, practical evaluation frameworks, and compliance with privacy regulations.
• Contributing to reusable components, documentation and engineering best practices that improve AI/ML delivery across the organisation.
• Collaborating with data engineers, data scientists, front & back‑end engineers, product managers to deliver impactful solutions.
• Supporting the evaluation of new AI technologies, frameworks and tooling, contributing ideas and recommendations for continuous improvement.
• Who you will work with
• Data and AI Team

About you

• Strong Python engineering skills (Fast API, testing, typing) and experience with cloud‑native development (GCP preferred).
• Hands‑on experience with GCP Vertex AI (model endpoints, pipelines, embeddings, vector search) or equivalent cloud‑native AI/ML platforms (e. g.

AWS Sage Maker, Azure ML) and agent orchestration frameworks (e. g.

Lang Chain, Lang Graph, ADK).

• Solid understanding of MLOps – CI/CD, Ia C (Terraform), experiment tracking, model registry, and monitoring.
• Proven experience deploying and operating ML systems in production (batch and real‑time).
• Familiarity with RAG architectures, prompt engineering, guardrails and evaluation techniques.
• Previous experience developing agentic capabilities, such as agent skills, MCP servers, tool usage.
• Strong grasp of security, privacy and governance principles (IAM, secrets, PII handling).
• Effective communication skills and ability to work with both technical and non‑technical stakeholders.
• An interest in evaluating new AI technologies and contributing to technical discussions around build, buy or configure decisions.
• Bachelor’s or Master’s degree in Computer Science/Engineering/related field, or demonstrable relevant experience.
• Additional desired skills
• Knowledge of vector databases and retrieval strategies.
• Experience with recommender systems and ranking models.
• Familiarity with LLM evaluation tools (e. g., RAGAS, Tru Lens, Lang Smith, Arize).
• A working understanding of cloud networking and platform infrastructure.
• Experience in e‑commerce or retail environments.

Why join us?

• Be a part of this values‑driven, high‑growth, magical journey with an ultimate vision to empower everyone, everywhere to be the best version of themselves.
• We’re a hybrid model with flexibility, allowing you to work how best suits you.
• 25 days holiday (plus bank holidays) with an additional day to celebrate your birthday.
• Inclusive parental leave policy that supports all parents and carers throughout their parenting and caring journey.
• Financial security and planning with our pension and life assurance for all.
• Wellness and social benefits including Medicash, Employee Assist Programs and regular social connects with colleagues.
• Bring your furry friend to work with you on our allocated dog‑friendly days and spaces and not to forget our generous product discount and gifting!

At Charlotte Tilbury Beauty, our mission is to empower everybody in the world to be the most beautiful version of themselves.

We celebrate and support this by encouraging and hiring people with diverse backgrounds, cultures, voices, beliefs, and perspectives into our growing global workforce.

By doing so, we better serve our communities, customers, employees - and the candidates that take part in our recruitment process.

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