Forensics & Investigations - Assistant Manager

Forvis Mazars is a leading global professional services network providing audit & assurance, tax, and advisory services.

Forvis Mazars in the UK spans 14 offices across the nation and has over 3,400 professionals, with 190 partners. We have a clear purpose and a shared commitment to shape a better future. You'll join a collaborative and inclusive team where you're supported to grow your skills, explore new opportunities, and contribute from day one. You'll work with a diverse client base, develop meaningful connections, and gain experience that extends beyond your local team.

Together, we grow, belong and impact.

Our Forensics and Investigations Services team is a dynamic, close‑knit group of more than 35 professionals based across three offices in the UK and one in India. We combine intellectual challenge with real‑world impact, working on high‑profile, complex matters across two core areas:
Disputes and Investigations & Compliance.

We act as financial and accounting experts—either as Independent Expert Witnesses or Expert Advisors—in a wide range of contentious matters. These typically arise in litigation or arbitration and include:

• Post‑M&A disputes
• Investment arbitration
• Financial reporting disputes
• Breach of contract claims
• Professional negligence cases

We conduct financial and non‑financial investigations for corporates, regulators, and public bodies, including:

• Fraud and corruption investigations
• Regulatory and government inquiries
• Compliance reviews and advisory engagements

We help organisations strengthen internal controls, respond to allegations of misconduct, and navigate complex regulatory environments.

Our engagements span a wide range of sectors and clients. Whether supporting a multinational energy company in a multi‑billion‑dollar arbitration, assisting a local authority with procurement concerns, or investigating potential financial reporting fraud for a national regulator, you will gain exposure to varied and intellectually stimulating work.

This is demanding work that requires strong attention to detail, excellent problem‑solving skills, and a commitment to high standards. But you will never be working in isolation. Our culture is collaborative and supportive—from Partners to graduates, everyone is approachable, knowledgeable, and invested in your development. You will be part of a team that values curiosity, integrity, and continuous learning.

As an Assistant Manager, you will play a key role in delivering high‑quality forensic and valuation assignments, ensuring client expectations are met within agreed budgets and timelines. You will work independently on defined work streams, support senior colleagues on complex engagements, and contribute to the development of junior team members. You will also be involved in business development activities that support the continued growth of the London practice and the wider national team.

Perform detailed forensic accounting work, including targeted financial analysis, transaction testing, and data interrogation.

Undertake in‑depth document review to identify key issues, anomalies, and patterns.

Assist in reconstructing financial records and preparing evidence files suitable for litigation or regulatory scrutiny.

Produce clear, well‑structured working papers that support findings and conclusions.

Support Managers, Directors, and Partners in preparing expert reports for litigation, arbitration, and ADR.

Contribute to the quantification of damages, valuation assessments, and financial modelling for dispute matters.

Help prepare high‑quality written…