Senior Accounts Assistant

Third Sector Property Limited; United Kingdom; Hybrid; GBP 42,000 - 55,000; Full time

Benefits offered by this job

Performance-related bonus

Private healthcare

Two paid charity days

25 days annual leave

Birthday £75 bonus

Mentoring opportunities

Contributory pension

Job summary

Third Sector Property Limited is seeking a skilled Finance professional to own the accounts payable function across a portfolio of clients, properties and funds in a hybrid role based in Reading.

You will supervise AP processes, manage suppliers, and deliver regular KPI reporting to senior management, while collaborating with property management, investment teams and ESG reporting for our B Corp commitments.

Qualifications

• Proven accounts payable experience with high volume invoice processing.
• Leadership skills for managing a team.
• Analytical mindset with attention to detail.

Responsibilities

• Oversee end-to-end accounts payable operations across a portfolio of clients, properties and funds.
• Manage supplier relationships and resolve complex invoice queries.
• Process weekly supplier pay runs in line with client approvals.

Skills

Accounts payable

Leadership

Attention to detail

Communication

Problem solving

Education

AAT qualification

Tools

QUBE Global Software

Job description

Location: Reading

Working pattern: Hybrid

Team: Finance

Reports to: Director, Head of Property Finance

A Little About TSP

TSP is a boutique, propertyand asset management business. We manage office, industrial and retail assets across the UK, creating spaces that are genuinely commute-worthy, hospitality-led, experience-driven, and proudly people-first.

We’re 17 years old, but we operate with the energy of a start-up: fast-moving, agile, and unafraid to challenge the status quo. Innovation, sustainability, and smart use of technology sit at the heart of what we do, helping us deliver healthy buildings filled with happy tenants.

Our culture is collaborative and entrepreneurial. We’re Investors in People Gold which puts us in the top 1% of companies in the UK and we were the UK’s first B Corp-certified real estate company. We are multi award winning and most recently, we were named Professional Services Team of the Year at Property Week Awards 2026.

The Role

This is a pivotal position within our Property Finance department, where you'll take ownership of TSP's accounts payable function while supporting the day to day finance function of a busy property management department. You'll be working across a portfolio of multiple clients, properties and funds, each with their own tenants, suppliers and reporting requirements.

Key Responsibilities

• Oversee end-to-end accounts payable operations across our diverse portfolio of clients, properties and funds, ensuring every invoice is coded and logged against the correct client, property and fund
• Manage supplier relationships and resolve complex invoice queries with contractors and service providers
• Process weekly supplier pay runs across the portfolio, in line with each client's approval and payment schedules

Your Core Duties

• Compliance Management: Ensure all payments comply with regulatory requirements and internal policies
• Vendor Management: Maintain accurate supplier databases and manage onboarding of new contractors across the portfolio
• Reporting: Prepare regular accounts payable reports and KPI tracking for senior management and quarterly client statements.
• Process Documentation: Create and maintain procedure manuals to support business continuity
• Cross-functional Collaboration: Work closely with Property Management and Investment teams on portfolio-specific requirements
• Sustainability Reporting: Contribute to ESG reporting requirements aligned with our B Corp commitments.
• Tenant Charges: Calculate and apply insurance and electricity recharges to the correct tenants and properties
• Cash Management: Monitor and forecast cashflow across client accounts to ensure funds are available for payments

What We're Looking For

• Proven accounts payable experience with demonstrable expertise in high-volume invoice processing. 5+ years experience would be preferred.
• Team leadership capabilities
• AAT qualification (completed or in progress) preferred, though exceptional candidates without formal qualifications will be considered
• Strong system proficiency, ideally including QUBE Global Software experience or similar property management systems
• Analytical mindset with exceptional attention to detail – essential when managing complex property transactions
• Professional communication skills for liaising with contractors, tenants, and internal stakeholders
• Problem-solving attitude that aligns with our innovative culture

The Perks

• Performance-related bonus
• Private healthcare
• Two paid charity days each year
• 25 days annual leave, not including public holidays and Christmas closure
• £75 birthday bonus
• Monthly Check-ins, development, learning and mentoring opportunities
• Excellent opportunity to develop within an award-winning, innovative company
• Contributory pension

The TSP Way

Own tomorrow. That means building a business that remains relevant in its time and place. We combine deep in-house expertise with a progressive investment ethos to provide wealth and security for our investors and people.

Our ultimate goal is to keep buildings fuller for longer. We do that by building character through our values:

• Ease
• Purpose
• Sweat the Small Stuff
• Generosity
• Hospitality
• Presence

Our Commitments To You

In line with The TSP Way and our commitments to building and sustaining a diverse workforce, we encourage applications from all sections of the community:

• We are committed to ensuring that all employees and job applicants are provided with equality of opportunity in employment. This commitment is reflected in our employment policies and practices, recognising the provision of equal opportunities as a matter of good management practice.
• Our aim is to promote equality of opportunity so that no employee or job applicant will be subject to unlawful or unfair discrimination on the grounds of gender, age, marital status, colour, race, religion, disability, sexual orientation, offending background, membership or non-membership of a trade union or political beliefs.

We recognise that equality and diversity in the workplace goes beyond legal compliance and that a diverse team is critical to our success as an organisation.

We look for a number of characteristics, competencies and core leadership behaviours in our people. These assessments are carefully built into our recruitment process to ensure that we attract and hire colleagues that share our values and ethos as a business.

In addition to encouraging a workplace free of unlawful discrimination, we expect our colleagues to treat one another with kindness and respect in every interaction and communicate in a way that respects every other human around them.