AMS PSR

On behalf of the Cabinet Office, we are looking for a Senior Business Case Manager (Inside IR35) for a 6 month contract which is a hybrid role so requires up to 4 days a week in the London office

The Cabinet Office supports the Prime Minister and ensures the effective running of government. The Cabinet Office is also the corporate headquarters for the government, in partnership with HM Treasury, and takes the lead in certain critical policy areas.

The Cabinet Office is seeking an exceptional and highly motivated individual to take on the role of G7 Business Case lead.

This is a complex, fast-paced role at the centre of government to deliver a transformational government capability. We welcome applications from all backgrounds. Diversity of thought, skills and experience is a valuable asset in this team.

SC Clearance is an essential requirement for this role, as a minimum you must be willing & eligible to undergo checks. Please note, due to the exceptional requirements of this position (short-term nature of this role and speed at which we require a postholder in situ) preference may be given to candidates who meet all of the essential criteria and hold active security clearance.

As a Senior Business Case Manager, your main responsibilities will be:

• Lead the planning, development, and drafting of business cases. Ready to challenge expert input and ensure compliance with organisational and Treasury requirements. Use insights from similar projects to guide the preparation of business cases.
• Lead engagement with stakeholders to identify, define, and quantify benefits. Negotiate with stakeholders to agree on key benefits and work with senior sponsors to ensure their expectations are met.
• Create and provide guidance to project teams on business case requirements and development using organisational templates and the HMT 5 case model.
• Ensure all relevant organisational factors for change are included within a comprehensive business case and provide a clear rationale for preferred options.
• Apply data analytics to develop robust business cases, assess project viability and track benefits realisation.
• Leadership and line management of a small team working on business case development. Leading working groups of colleagues from across diverse teams and organisations to develop the business case.
• Providing robust advice to seniors, relevant boards, ministers on business case development.

Essential Skills

• Demonstrable experience planning, developing and drafting end-to-end business cases for complex programmes with expertise in the HM Treasury Green Book and the 5-Case Model.
• Ability to challenge expert/technical inputs and options to ensure they are robust and provide genuine value for money.
• Proficiency in identifying and quantifying both financial and non-financial benefits, ensuring they are realistic, measurable, and aligned with organisational strategy.
• Ability to use data analytics and financial modelling to assess project viability, conduct sensitivity analysis, and track long-term benefits realisation.
• Proven ability to manage a wide range of stakeholders with competing priorities (e.g., Finance, Commercial, Policy, and Digital), building consensus on the best way forward; ability to confidently provide robust advice to senior leaders.
• Experience in providing guidance, templates, and training to project teams to upskill them in business case development.
• Ability to lead and develop a high-performing and inclusive team, and to embed a positive team culture and working practices in a fast-paced delivery environment.

Please be aware that this role can only be worked within the UK and not Overseas.

Disability Confident 

As a member of the Disability Confident Scheme, The Cabinet Office guarantees to interview all candidates who have a disability and who meet all the essential criteria for the vacancy. In cases where we have a high volume of candidates who have a disability who meet all the essential criteria, we will interview the best candidates from within that group. This scheme encourages candidates with a disability and/or neurodivergence to apply. In exceptional circumstances, we may also need to apply the desirable criteria in our shortlisting process which may include holding active security clearance.

Armed Forces Covenant

The Cabinet Office guarantees to interview veterans or spouses / partners of military personnel who meet all the essential criteria for the vacancy. In cases where we have a high volume of ex-military candidates / military spouses or partners, who meet all of the essential criteria, we will interview the best candidates from within that group. In exceptional circumstances, we may also need to apply the desirable criteria in our shortlisting process which may include holding active security clearance.

In applying for this role, you acknowledge the following "this role falls in scope of the Off Payroll Working in the Public Sector legislation. Any rates of payment quoted will reflect the gross rate per day for the assignment and will be subject to appropriate taxes and statutory costs. As such the payment to the intermediary and your income resulting from this contract will be different".