Assistant Finance Business Partner

The Niche Partnership; Purbrook; On-site; GBP 28,000 - 38,000; Full time

Benefits offered by this job

5% pension contribution

26 days' holiday

Life insurance

Study support

Progression plan

Flexible working

Job summary

The Niche Partnership in Portsmouth is seeking a permanent, office-based Finance Business Partner. You will support contract managers, analyse performance, and help shape financial decisions while building real relationships across the business. Candidates should have AAT Level 3+ (or a degree) and relevant experience.

Excellent Excel skills and commercial awareness are essential; Power BI is a plus. The role offers flexible working after settling in, a supportive development environment, and a

Qualifications

• Requires AAT Level 3 or above, or a degree in Accounting/Finance, or studying towards CIMA/ACCA.
• Previous experience in a similar junior finance/FP&A role.
• Strong Excel skills with ability to use XLOOKUPs and Pivot tables.

Responsibilities

• Supporting Contract Managers with financial management and decision-making
• Analysing contract performance and explaining financial results
• Supporting business cases, tendering, and pricing exercises, liaising with clients
• Building strong relationships with operational teams and stakeholders, attending client meetings and producing financial reports for clients
• Supporting open-book audit requirements and providing relevant documentation

Skills

Commercial awareness

Analytical mindset

Strong Excel skills

Education

AAT Level 3 or above, degree in Accounting/Finance, or studying towards CIMA/ACCA

Tools

Excel

Power BI

Job description

Looking for a finance role where you can actually see the impact of your work, build real relationships, and grow your commercial skills? This is your chance to join a leading organisation in construction, building maintenance, and facilities management, where the finance team is stable, supportive, and genuinely values your input. Whether you're early in your career or already have some business partnering experience, you'll be trusted to make a difference, develop your skills, and take on more responsibility as you grow.

The role is permanent, office-based in Portsmouth, and offers flexibility once you've settled in.

Reporting to the Financial Controller, you will be responsible for:

• Supporting Contract Managers with financial management and decision-making
• Analysing contract performance and explaining financial results
• Supporting business cases, tendering, and pricing exercises, liaising with clients and providing financial information where required
• Building strong relationships with operational teams and stakeholders, attending client meetings and producing financial reports for clients
• Supporting open-book audit requirements and providing relevant documentation

What you will need:

• AAT Level 3 or above, degree in Accounting/Finance, or studying towards CIMA/ACCA studies
• Previous experience in a similar role (Junior Finance Business Partner, Assistant Finance Business Partner, Assistant Management Accountant or similar)
• Strong Excel skills (X-lookups, Pivot tables, PowerBi desirable)
• A good level of commercial understanding and awareness

What you will get:

• Annual salary review/pay increase structure
• 5% pension contribution
• 26 days' holiday plus bank holidays
• Life insurance
• Study support available
• Supportive development environment with regular 1-to-1s and a structured progression plan
• Flexible working