AI Engineer at Harnham

Job Description:

Latest job information from Harnham for the position of AI Engineer. If the AI Engineer vacancy in London matches your qualifications, please submit your latest application or CV directly through the updated Jobkos job portal.

Please note that applying for a job may not always be easy, as new candidates must meet certain qualifications and requirements set by the company. We hope the career opportunity at Harnham for the position of AI Engineer below matches your qualifications.

AI Engineer

London (Hybrid – 3 days a week in office)

Up to £100,000

About the Company

We’re supporting a global, market‑leading wellness and fitness organisation that is scaling its AI capabilities at pace across multiple international markets. With a mission centred on improving people’s lives through wellness, the company blends technology, data, and modern engineering practices to enhance member experience, drive commercial growth, and unlock operational efficiency.

The organisation has recently invested heavily in a cutting‑edge AI function, with a mandate to design, build, and deploy end‑to‑end AI solutions that solve meaningful, real‑world business problems. This is an environment where AI engineers work hands‑on with cross‑functional teams and where shipped solutions make a tangible impact across digital products, marketing, operations, and member experience.

The Role

They’re now hiring an AI Engineer to join a growing AI team delivering production‑grade AI systems across the business. This role sits at the intersection of software engineering, machine learning, and applied data science — ideal for someone who enjoys building real products, not just prototypes.

You’ll work end‑to‑end: from problem framing and data preparation, through modelling and experimentation, to deployment, monitoring, and iteration. You’ll collaborate with teams across Digital, Marketing, Operations, Finance, and Governance to translate business challenges into robust, ethical AI solutions.

If you want to build AI systems that genuinely impact users, unlock commercial value, and scale across multiple markets, this offers a rare level of ownership and breadth.

Key Responsibilities

• Act as a hands‑on builder of AI‑powered products from idea to production.
• Combine software engineering, data engineering, and ML/LLM skills to deliver scalable solutions.
• Rapidly prototype, test, and iterate with real stakeholders and real data.
• Work closely with business teams to identify opportunities and define success criteria.
• Translate real operational problems into actionable AI solutions.
• Build models using classical ML (e.g., tree‑based methods, forecasting, uplift) as well as LLMs and generative AI.
• Develop predictive solutions such as churn, propensity, next‑best‑action, and lead scoring.
• Build APIs, services, and integrations enabling AI models to power real products.
• Embed AI into digital journeys, CRM systems, member apps, and internal tools.
• Manage the full lifecycle of models: deployment, monitoring, alerting, retraining.
• Build scalable pipelines and ensure reliability, performance, and efficiency.

Requirements

• Proven experience in applied data science, ML engineering, or software engineering with strong AI/ML responsibility.
• Proven track record delivering AI/ML solutions into production.
• Experience working closely with business teams such as Marketing, Product, or Operations.
• Background in one or more of: personalisation, customer analytics, conversational AI, recommendation systems, optimisation, or marketing analytics.
• Deep understanding of ML fundamentals across the full lifecycle.
• Hands‑on experience with ML frameworks (scikit‑learn, XGBoost, PyTorch, TensorFlow, LightGBM).
• Strong exposure to LLMs, prompt engineering, RAG, and evaluation frameworks.
• Familiarity with MLOps tooling: CI/CD, experiment tracking, model registries, monitoring, containers.

Please note:

This role cannot provide VISA sponsorship.

Job Info:

• Company: Harnham
• Position: AI Engineer
• Work Location: London
• Country: GB

How to Submit an Application:

After reading and understanding the criteria and minimum qualification requirements explained in the job information AI Engineer at the office London above, immediately complete the job application files such as a job application letter, CV, photocopy of diploma, transcript, and other supplements as explained above. Submit via the Next Page link below.