Billing Assistant in London

Binnies, part of the RSK Group, is looking for a Project Billing Associate to join our growing Billing Team. This is an excellent opportunity for someone with billing, finance administration or project accounting experience who enjoys working in a fast-paced, collaborative environment. Based from our Redhill office, you are welcome to work in the office five days a week; however, we also offer flexible and hybrid working arrangements, allowing you to split your time between home and the office.

We offer:

• Competitive salary
• Flexible and hybrid working arrangements
• Generous annual leave entitlement
• Pension scheme, Life assurance, Private medical insurance
• Career development opportunities within a growing business

The Role: As a Project Billing Associate, you will play a key role in ensuring accurate, timely and compliant billing across a diverse portfolio of projects. Working closely with Project Managers, Project Accountants and the wider Finance Team, you will help maintain financial records, prepare invoices and resolve billing queries. This is a detail-oriented role that combines financial accuracy with strong communication and organisational skills.

Key Responsibilities:

• Prepare, review and issue client invoices in line with project milestones, deliverables, time records and contractual requirements.
• Ensure billing activities align with client contracts, agreed rate cards and internal policies.
• Track billable hours, expenses and project costs to ensure accuracy.
• Identify and resolve billing discrepancies in a timely and professional manner.
• Ensure invoices issued appropriately cover the Work in Progress (WIP) position and work closely with Project Accountants to address any issues.
• Investigate and resolve client billing queries and discrepancies.
• Reconcile project accounts, expenses and time entries.
• Ensure compliance with internal controls, financial standards and audit requirements.
• Build strong working relationships with Project Managers, Finance teams and other stakeholders.
• Support month-end and year-end financial processes.
• Contribute ideas and insights to improve billing processes and operational efficiency.

What We're Looking For:

• Previous experience in billing, project accounting or financial administration.
• Strong numerical and analytical skills with excellent attention to detail.
• Experience using financial or project management systems such as Access Dimensions, FocalPoint, SAP, Oracle, Workday or similar.
• Proficiency in Microsoft Office 365, particularly Outlook, Teams and Excel.
• Excellent communication and stakeholder management skills.
• Ability to manage multiple priorities and work to deadlines in a busy environment.

Desirable:

• Experience within a project-based, engineering, consultancy or professional services environment.
• Advanced Excel skills, including Pivot Tables, VLOOKUPs and data validation.
• Experience using time recording systems such as FocalPoint, Workday or similar.
• Understanding of contract structures, including Time & Expense (T&E), Fixed Fee, Percentage Complete, Applications and Certifications.

Why Join Binnies? At Binnies, we are committed to creating sustainable solutions that improve communities and the environment. As part of the RSK Group, you'll join a business that values collaboration, flexibility, innovation and professional development. Ready to take the next step in your finance career? We'd love to hear from you. Apply today and become part of the Binnies team.