Lead Data Scientist

Job Title:Principal Data Scientist

Salary:£100,000 - £130,000 + bonus + benefits

Location:London - 3 days p/w in-office

Tech:Python, AWS, Spark, Dataiku, Airflow, SnowFlake, ML/NLP, Predictive Modelling

*Sponsorship is not on offer for this role

The Company:

Immersum are partnered with a high-growth data company that’s redefining how organisations engage with household and location-level intelligence. Their proprietary datasets and predictive modelling techniques power smarter decision-making across marketing, commercial, and customer functions. With a growing client base and investment in AI/ML innovation, this business is building out a world-class data science function to lead the next phase of its scale-up journey.

The Role Requirements:

This is a unique opportunity to join a small but fast paced company delivering AI and ML solutions at scale. You’ll lead a small but high-performing team, own the technical roadmap, and drive innovation across machine learning, data products, and modelling infrastructure.

What you’ll be doing:

• Leading AI/ML strategy and building scalable, production-ready models
• Mentoring and growing a strong data science team
• Driving the use of predictive analytics in key product and commercial areas
• Collaborating cross-functionally with engineering, product and senior leadership
• Championing responsible, ethical use of data in line with GDPR and industry standards

What you’ll bring:

• 10+ years in data science or applied AI/ML roles, including senior leadership
• Deep expertise in ML, NLP, predictive modelling, and advanced analytics
• Strong programming ability in Python, with experience across cloud and data platforms (e.g. AWS, Spark, Dataiku)
• Commercial mindset and strong stakeholder engagement skills
• Passion for applying data science to real-world business challenges

Why Join:

• High-impact leadership role with real strategic ownership
• Shape the future of an ambitious, data-first scale-up
• Hybrid working, flat structure, and a leadership team that values innovation
• Be part of a business with unique proprietary datasets and real momentum