MCS Group are delighted to be working with an established AI and data science organisation delivering real-world machine learning systems across complex, high-impact environments. The team works on applied AI problems including large language models, computer vision, signal processing, and advanced analytics - building production systems rather than dashboards or proofs of concept. The Belfast office is growing and playing a key role in shaping the company's future technical capability. Role Overview This is a senior, hands-on Machine Learning/ Data science role combining technical delivery, mentorship, and team leadership. You'll take ownership of complex ML programmes, guide technical direction, and support the development of a growing data science team while remaining deeply involved in building and deploying real-world systems. What You'll Need 8 years' experience in data science, machine learning, or applied AI Strong track record delivering ML systems into production Experience mentoring or leading other data scientists (formal management not required) Practical experience with LLMs / GenAI Background in at least one of: computer vision, NLP, or statistical modelling Whats in it for you Heavy focus on LLMs, GenAI, and real-world AI systems Work across diverse problem spaces including signal data, computer vision, and large-scale analytics Strong balance of hands-on technical work and leadership Opportunity to help shape and grow a data science function in Belfast Meaningful, applied work - not dashboards or experimentation-only projects To speak in absolute confidence about this opportunity please contact Rachael Walker, IT Recruitment Manager at MCS Group or click the apply button below. If this position is not right for you, we have others that are. Please visit MCS Group to view a wide selection of our current jobs or give us a call. All conversations will be treated in the strictest of confidence. Skills: data scientist lead data scientist ML Engineer machine learning Benefits: Work From Home