Principal Engineer - Contract - Outside IR35

We are currently looking for an experience Principal Engineer to join us on a contract basis.
This is a hybrid position and will require 3 days per week on client site in Central London.
Requirements
Role responsibilities:

- Define and drive technical strategy, architecture, and engineering standards across the Personalisation domain

- Design and deliver scalable systems supporting personalisation, search, recommendations, and ML-powered features

- Partner closely with Product, Data Science, and Design to deliver customer-centric solutions

- Lead and influence technical decision-making across multiple teams and platforms

- Mentor and support senior engineers, helping to raise the overall engineering capability

- Improve engineering quality, reliability, and productivity through best practices, tooling, and platform enhancemen
Who you are:

- An experienced technical leader with a strong background in Java/Python and large-scale production systems

- Strong experience working with Machine Learning systems and collaborating with Data Science teams

- Skilled in system design and architecture, with the ability to deliver scalable, high-quality solutions

- Comfortable working across cross-functional environments with multiple stakeholders

- Passionate about growing others and driving engineering excellence

- A strong communicator who can influence technical and business decisions at all levels"