Senior Machine Learning Engineer / DV Clearable / 5 Days Onsite
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Applying rigorous machine learning to real-world problems that matter
We're looking for a Senior Machine Learning Engineer to join a multidisciplinary data and AI team delivering high-impact, real-world solutions in a secure and highly regulated environment.
This is a senior, hands-on practitioner role, not a people-management position. You'll operate with a high degree of autonomy, leading complex machine learning work end-to-end through technical depth, sound judgement, and delivery credibility.
The organisation is outcome-led rather than technology-led. Where strong market solutions exist, they are used. Machine learning is built in-house only where problems are genuinely complex, niche, or sensitive - requiring experimentation, evaluation, and iteration beyond what can be bought. This means the work is thoughtful, challenging, and purposeful, rather than driven by novelty or trend.
What you'll be doing
You'll take ownership of complex ML problems, applying scientific thinking and pragmatism in equal measure.
You will:
- Lead end-to-end machine learning delivery, from problem definition through experimentation, evaluation, and iteration
- Apply mathematical, statistical, and scientific reasoning to form hypotheses, quantify uncertainty, and interpret results
- Design and run structured experiments to assess model behaviour, performance, and user impact
- Work with real, imperfect operational data, not just curated or static datasets
- Collect, assess, and transform data to support model evaluation and continuous improvement
- Balance rigour with pragmatism, delivering solutions that are robust, proportionate, and fit for purpose
- Integrate machine learning components into wider systems, considering performance, reliability, and operational constraints
- Communicate xsabvtc complex technical ideas clearly to non-technical stakeholders, enabling informed decision-making
- Engage confidently in deep technical design and review discussions with peers
- Operate effectively within a strong technical assurance and review culture
- Collaborate with internal teams and selected external partners working at the leading edge of AI
What we're looking for
This role suits a senior ML practitioner who values judgement, evidence, and outcomes over theoretical or tooling purity.
Essential experience:
- Proven ...
Senior Machine Learning Engineer employer: Lorien Careers
Join a leading pharmaceutical company that values innovation and flexibility, offering a dynamic work culture where your contributions directly impact global health outcomes. With opportunities for professional growth and the ability to work remotely from Maidenhead, you will collaborate with a talented team on diverse projects across various therapy areas, ensuring a rewarding and meaningful experience in health economics modelling.
