Finance Assistant (Accounts Payable)

TPXimpact Ltd; Greater London; On-site; GBP 26,000 - 38,000; Full time

Benefits offered by this job

30 days holiday + bank holidays

Volunteer days

Maternity/Paternity leave

Life assurance

Pension contribution 5%

Health cash plan

Learning & development budget

Employee assistance programme

Cycle to work scheme

Job summary

TPXimpact Ltd is hiring a Finance Assistant in Greater London to manage purchase ledgers, process invoices, and assist with cash flow and month-end activities. The role focuses on accounts payable, with support for accounts receivable as needed.

The successful candidate will have solid knowledge of VAT, ledger management, and experience with NetSuite and Xero, plus strong Excel skills. You will work in a collaborative finance team and ensure accurate financial data.

Qualifications

• Solid understanding of accounts receivable, accounts payable, and ledger management.
• Experience with VAT and reconciliation processes.
• Proficiency in NetSuite and Xero for processing transactions and reporting.
• Experience managing aged debts and client communications.
• Strong Excel skills, including pivot tables.
• Ability to analyze discrepancies and improve processes.

Responsibilities

• Process invoices, payment runs, staff expenses, and corporate card transactions.
• Set up new suppliers on NetSuite.
• Support accounts receivable activities including credit control and invoicing.
• Reconcile bank accounts and assist with month-end close.
• Assist with ad‑hoc duties and ongoing professional development.
• Maintain accurate financial records across datasets.

Skills

Accounts payable

Accounts receivable

VAT knowledge

Bank reconciliations

Excel

NetSuite

Xero

Financial reporting

Cash flow forecast

Attention to detail

Tools

NetSuite

Xero

ERP systems

Job description

About The Role

The Finance Assistant is responsible for processing financial transactions across DT and Central operations with a primary focus on accounts payable while also assisting with accounts receivable tasks as required. The role will report to the Senior Finance Manager.

Responsibilities

• Focus on accounts payable - managing the purchase ledger including coding and processing invoices, payment runs, staff expenses and corporate card transactions
• Setting up new suppliers on the accounting system (NetSuite)
• Supporting accounts receivable - credit control, raising sales invoices, liaising with project managers and reviewing client queries
• Reconciliation of bank accounts and other items as directed by the (Senior) Finance Manager
• Support the month-end and year-end process and preparation of monthly financial accounts
• Assisting with any other ad‑hoc duties as required including assisting with accounts payable
• Continuously maintain and update skills and knowledge to stay current within your relevant field of expertise

About You

Professional knowledge and experience

• Solid understanding of core accounting concepts including accounts receivable, accounts payable, ledger management, VAT, and reconciliation processes
• Proficiency with accounting software such as NetSuite and Xero, including experience in transaction processing, supplier/client setup, and reporting
• Experience managing aged debts, credit limits, and client communications to ensure timely collections
• Basic skills in short-term cash flow forecasting and financial reporting support
• Knowledge of relevant tax regulations (e.g. VAT) and financial controls to ensure adherence to company policies and legal requirements
• Ability to analyze discrepancies, resolve financial queries, and improve processes
• Strong interpersonal skills for liaising with internal teams, clients, and suppliers effectively

Technical skills

Accounting & Reporting

• Basic understanding of double-entry bookkeeping, sales & purchase invoices, supplier/client management
• Understanding of correct VAT application
• Maintaining accurate financial records and managing multiple datasets
• Awareness of accounting standards

Internal Controls and Compliance

• Familiarity with audit processes
• Understanding of internal controls

Systems & Tools

• NetSuite (preferred) or similar ERP systems
• Advanced Excel (e.g. pivot tables, formulas)
• Electronic payment platforms for banking

Behaviours

The essential behaviours for a Finance Assistant role are centered on accuracy, reliability, and professionalism. The work is highly transactional, so the behaviours must support the integrity of financial data and the efficiency of daily operations.

Core Behaviours

• Attention to Detail: A meticulous eye for detail to ensure that all financial data is 100% accurate.
• Reliability and Accountability: The role involves a series of cyclical and deadline-driven tasks, such as month-end reporting and payment runs. The ability to be trusted to complete tasks on time and to a high standard, with minimal supervision, is crucial.
• Integrity and Discretion: Handling sensitive financial information, including supplier payments, client details, and staff expenses. Maintaining a high level of integrity and confidentiality is non‑negotiable.
• Proactive and Self‑Motivated: Take the initiative to follow up on outstanding invoices, reconcile discrepancies, and look for ways to improve processes.
• Customer Service Orientation: A service-oriented mindset, with a professional and helpful attitude, is necessary for resolving queries and maintaining positive relationships.
• Clear Communication: The ability to explain financial information clearly and without jargon, both in writing and verbally, is essential.
• Team Player: Finance Assistant is part of a larger finance team. A collaborative mindset, willing to support colleagues and contribute to shared goals, is important for the team’s overall success.

PACT values

• Purpose - The beating heart of our organisation—a impact we make on people, places, and the planet. Purpose is our driving force and at the core of our organisation.
• Accountability - As we apply flexibility, pace and growth through our self‑organisation, we are accountable* to all of our stakeholders.
• Craft - Craft highlights our dedication to bringing precision, problem‑solving, and creativity to our work, both with our clients and internally.
• Togetherness - Togetherness is 'how' we work - it captures the energy, fun, and user‑centred approach that we embrace. It signifies the collaborative spirit we bring to our work, including people at every level and creating a sense of belonging to our team s.

About Us

People-Powered Transformation

We're a purpose driven organisation, supporting organisations to build a better future for people, places and the planet. Combining vast experience in the public, private and third sectors and expertise in human‑centred design, data, experience and technology, we’re creating sustainable solutions ready for an ever‑evolving world.

At the heart of TPXimpact, we’re collaborative and empathetic. We’re a team of passionate people who care deeply about the work we do and the impact we have in the world. We know that change happens through people, with people and for people. That’s why we believe in people-powered transformation.

Working in close collaboration with our clients, we seek to understand their unique challenges, questioning assumptions and building in their teams the capabilities and confidence to continue learning, iterating and adapting.

Benefits Include

• 30 days holiday + bank holidays
• 2 volunteer days for causes that you are passionate about
• Maternity/paternity - 6 months Maternity Leave, 3 months Paternity Leave
• Life assurance
• Employer pension contribution of 5%
• Health cash plan
• Personal learning and development budget
• Employee Assistance Programme
• Green incentive programmes including Electric Vehicle Leasing and the Cycle to Work Scheme
• Financial advice
• Health assessments

We are committed to having a positive impact on the clients and the communities we serve. We actively encourage applications from all genders, ethnicities, disabled people, members of the LGBTQIA+ community, and those from lower socio-economic backgrounds.

Don't meet 100% of the criteria? We still want to hear from you. Please let us know if you require any adjustments during the recruitment process.