# Principal Engineer - Contract - Outside IR35

> Mindera · London, United Kingdom (Hybrid) · — · Posted 2026-06-26

**Workplace:** hybrid

**Department:** Engineering

## Description

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"

## Apply

[Apply at Mindera](https://apply.workable.com/minderacraft/j/67D09A49C6/apply)

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