Principal Engineer (Data & AI Capabilities)

Compare The Market; Greater London; On-site; GBP 120,000 - 170,000; Full time

Job summary

Compare the Market in London, UK, seeks a Principal Engineer to lead Data & AI capabilities and set the technical direction for architectural solutions across the business.

You will design and deliver large-scale AI and data systems, establish standards, and mentor engineers while collaborating with senior stakeholders to scale responsible AI in production.

Qualifications

• Experience designing, delivering and supporting large-scale data and AI solutions in production.
• Experience setting technical direction and engineering standards.
• Strong software engineering fundamentals for data-intensive systems.
• Experience applying data/AI skills to AI/ML engineering.
• Ability to balance technical excellence with business outcomes.
• Excellent communication with technical and non-technical stakeholders.
• Mentoring engineers and guiding teams.

Responsibilities

• Set the technical direction for Data & AI across the business.
• Lead the design and delivery of large-scale AI and data solutions.
• Establish best practices, standards and reusable frameworks.
• Improve monitoring of AI systems in production.
• Partner with senior stakeholders across Data, Product and Engineering.
• Mentor engineers and foster governance and controls.

Skills

Data & AI leadership

Engineering standards

Software engineering

AI/ML in production

Stakeholder communication

Mentoring

Technical strategy

Job description

Principal Engineer (Data & AI Capabilities)

London, United Kingdom and 1 more

Job Description

Curious about what’s next?

So are we. Join Compare the Market and help to make financial decision making a breeze for millions.

At Compare the Market, we’re a purpose-driven business powered by tech and AI. We’re building high-performing, results-driven teams with the skills, mindset, and ambition to deliver outcomes at pace. Every role here plays a part in driving our mission forward, and we create an environment where you can bring your authentic self, grow a truly characterful career, and see the direct impact of your work on the lives of our customers.

We’ve carved a meerkat-shaped niche and we’re looking for ambitious, curious thinkers who thrive in a fast-moving, high-impact environment. If you love accountability, embrace challenge, and want to make a real difference, you’ll fit right in.

What you’ll be doing:

Set the technical direction for Data & AI, acting as a trusted technical leader who shapes how AI and data solutions are designed and built across the business.

Lead the design and delivery of complex, large-scale AI and data solutions that can be adopted and scaled across the organisation.

Establish best practices, standards and reusable frameworks that help teams build more consistently and efficiently.

Improve how we monitor, evaluate and support AI systems in production, so they remain reliable and continue to deliver value.

Partner with senior stakeholders across Data, Product and Engineering to turn business goals into impactful technical solutions.

Mentor engineers across the Data & AI community and help ensure the right governance, standards and controls are in place as our AI capability grows.

What we’re looking for:

Significant experience designing, delivering and supporting large-scale data and AI solutions in production, within a complex organisation.

Proven experience setting technical direction, establishing engineering standards and frameworks, and influencing decisions from engineering through to leadership level.

Strong software engineering fundamentals, with experience designing, building and operating large-scale, data-intensive systems in production.

Experience of, understanding of, or a strong interest in, applying these skills to AI/ML engineering.

A strong understanding of how to balance technical excellence with business outcomes.

The ability to communicate complex ideas clearly and build strong relationships with both technical and non-technical stakeholders.

A passion for mentoring others and helping teams and individuals develop.

An interest in shaping how organisations adopt and scale AI in a practical, responsible and impactful way.

Why Compare the Market?

We’re a business built for pace and performance. Here, you’ll be encouraged to think differently, act boldly, and deliver brilliantly in a culture that values results and rewards progress.

We believe diverse teams make better decisions, and we’re committed to creating an inclusive workplace where everyone feels empowered to grow, contribute, and thrive.

Job Info

• Job Identification 100284
• Job Category Data & Analytics
• Posting Date 09/21/2026, 10:12 AM
• Job Schedule Full time
• Locations London, United Kingdom Peterborough, Cambridgeshire, United Kingdom