Principal Data Scientist – Healthcare
Location: Kainos, Belfast, Northern Ireland, United Kingdom
Overview
Join Kainos and Shape the Future. At Kainos, we’re problem solvers, innovators, and collaborators – driven by a shared mission to create real impact. We believe in a people‑first culture where your ideas are valued and your growth is supported. Kainos is recognised as one of the UK’s leading AI and data businesses with a decade‑long track record of producing impactful AI solutions for government, healthcare, defence, and commercial sectors. Our 150‑strong AI and Data Practice brings deep expertise in machine learning, generative AI, agentic AI and data, and we are pioneers in responsible AI.
Responsibilities
As a Principal Data Scientist at Kainos, you will:
* Accountable for the successful delivery of large‑scale, high‑impact AI solutions.
* Set the direction for AI and data science across the business, driving the adoption of modern development practices and scalable, cloud‑native architectures.
* Provide technical and thought leadership, engaging with C‑level and senior stakeholders to define architectural principles.
* Lead, mentor, and develop a community of data scientists, AI engineers, and technical managers.
* Build enduring customer relationships and shape Kainos’ commercial AI offerings.
Minimum (Essential) Requirements
* Proven track record of delivery of complex, production‑grade AI/ML solutions at scale.
* Demonstrable experience in technical leadership in AI delivery.
* Deep expertise in advanced AI/ML models – time series, supervised/unsupervised learning, reinforcement learning, LLMs and agentic AI.
* Experience with advanced AI engineering approaches such as prompt engineering, retrieval‑augmented generation and orchestration of agentic systems.
* Expertise in data engineering for AI: handling large‑scale, unstructured, multimodal data and integrating non‑traditional data sources.
* Deep understanding of responsible AI principles, model interpretability, and ethical considerations.
* Ability to communicate and negotiate with C‑level and senior stakeholders, translating complex technical concepts into business value.
* Experience in executing account strategies and driving business development in partnership with sales.
* Strong commercial acumen and track record of influencing commercial success of AI products.
* Demonstrated ability to build and lead high‑performing teams and wider AI communities.
Desirable
* Experience with modern deep learning frameworks (PyTorch, TensorFlow) and fine‑tuning of LLMs.
* Experience with vector databases, semantic search, and knowledge graphs.
* Active contribution to open‑source AI projects, research publications, and industry events.
* Familiarity with AI security, privacy, and compliance standards.
Embracing Our Differences
At Kainos, we believe in the power of diversity, equity and inclusion. We actively seek talent from all backgrounds and provide accommodations throughout the recruitment process. All candidates are assessed on a level playing field.
Seniority Level
* Mid‑Senior level
Employment Type
* Full‑time
Job Function
* Engineering and Information Technology
Industries
* Information Services
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