Interim Data Internal Auditor in London

At Grant Thornton we’re building something bold. We’re doing things differently - looking to the future, driving ambitious growth and pioneering positive change in our industry. Providing audit, tax and advisory services, we empower clients through strategic insight, curiosity, and genuine partnership. And we empower our people with real opportunity. Our journey from great to exceptional is well underway. With significant investment behind us and a clear strategy for growth, there’s real momentum.

Our Agile Talent Community (ATC) brings together experienced contract professionals who want choice without losing connection. You work where you add the most value, alongside teams who treat you as a partner rather than a placeholder.

Grant Thornton’s Financial Services Business Risk Services (FS BRS) team delivers market-leading risk, control and governance services to clients across insurance, banking and investment management. We work alongside financial institutions to help them achieve their strategic goals – whether that means navigating new legislation, responding to regulatory change, or adapting their technology and operating models to stay competitive in a rapidly evolving landscape. Our work spans internal audit (outsource and co-source), finance and risk management, compliance and technology – giving our people broad exposure to some of the most complex and high-profile challenges in financial services today.

If you’re an experienced Interim Data Internal Auditor who’s tired of choosing between freedom and meaningful work, there’s another route. Within our FS BRS team, you’ll be given the opportunity to take on short- to medium-term projects that sharpen your expertise, stretch your thinking, and give you a different angle on familiar challenges - all without locking you into a single path.

Skills We Are Looking For

• Significant experience in data internal audit assignments within a retail and/or commercial banking environment, with a clear understanding of how analytical techniques can be applied to identify risks, test controls and deliver audit conclusions.
• Proven technical proficiency in SQL and Python, with hands-on experience applying data science methodologies – including machine learning and Generative AI – to real-world audit scenarios within complex financial services organisations.
• Solid track record managing peers and junior colleagues across concurrent data science projects, with the ability to hold teams accountable for quality and timeliness, foster a collaborative working culture and support colleague development through coaching and constructive feedback.
• Strong ability to understand and articulate complex business processes, risks and controls within a financial services context, with the communication skills to convey technical findings and data-driven insights in a way that is clear and meaningful to non-technical stakeholders and senior audiences.
• Proven ability to produce thorough audit workpaper documentation, review the work of colleagues to the required standard and manage multiple competing project deadlines, operating effectively both independently and as part of a broader audit team.
• Experience with Google Cloud Platform, visualisation tools such as Power BI, and techniques including process mining.

Why Consultants choose the ATC

• Work that moves you forward: When a project fits your skills, we’ll get in touch, but you choose whether it’s right for you. That means working on engagements that genuinely build your portfolio and expand your expertise.
• The freedom of contracting without the hidden admin: You’re not left to navigate the freelance world alone. Our Agile Talent team helps you understand freelance regulation and connects you with people who broaden your thinking through our teams and clients.
• Community you can actually feel: Connection shouldn’t disappear just because you’re contracting. From market insights to wellbeing sessions to networking events, you’ll be part of a community designed to make the independent path less isolated and more impactful.

Our culture and values

We have a culture where talented people thrive – where high performance is not just expected but enabled. It’s a culture built on clarity, curiosity, and care. One that challenges us to aim higher, where we’re encouraged to make the most of an abundance of resources to fuel our own development, and where we support each other to grow, learn, and succeed.

Our open and accessible culture means you’ll interact with leaders who are interested in you and everything you bring to our firm. The things that set you apart, we value them. That’s why we give you the freedom to bring your whole self to work and pursue your passions inside and outside of work.