Customer Service & Client Administration Coordinator Aylesbury, Buckinghamshire BAS Associates [...]

We’re looking for an experienced administrator who takes pride in organisation, accuracy, and delivering excellent client service. This is a client-facing administrative position where attention to detail, the ability to work at pace, and strong communication skills are essential. You will play a key role in supporting our clients, client managers, and internal systems, helping to ensure a smooth and professional experience across the business.

We are specifically looking for someone who sees administration as a skilled, long-term profession and values consistency, responsibility, and building trusted working relationships.

The Role

You will provide administrative and client service support across two office locations, working closely with Client Managers and the wider team. While based primarily in one office, you will support both locations as required. You will be a key point of contact for clients and an integral part of the team supporting our largest and most complex client relationships. This is a full-time in-person role.

Key Responsibilities

• Client Service & Communication

• Answering incoming phone calls and handling client enquiries
• Managing and prioritising multiple shared email inboxes
• Welcoming clients on-site and coordinating meetings and appointments
• Providing consistent, high-quality service to build long-term client relationships

• Accurately inputting and maintaining client data within internal software systems and spreadsheets
• Managing incoming and outgoing client records with care, accuracy, and confidentiality
• Ensuring client information is complete, up to date, and correctly recorded
• Supporting Client Managers with administrative tasks for our largest clients

• Coordinating diaries, meetings and internal holiday calendars
• Managing incoming and outgoing correspondence (email and post)
• Ensuring offices are organised, well-stocked, and running efficiently

• Taking ownership of administrative systems and processes
• Identifying opportunities to improve efficiency and accuracy
• Supporting consistent and reliable ways of working across the business

• Accurately inputting and maintaining client data within internal software systems and spreadsheets
• Ensuring client records, documents, and data are complete, accurate, and up to date
• Supporting simple financial administration such as invoicing coordination and expense tracking
• Maintaining confidentiality and accuracy at all times

This role requires exceptional attention to detail and the ability to work at pace, while maintaining consistently high standards. You’ll be confident managing multiple priorities in a busy, client-facing environment, with strong organisational and time management skills that allow you to stay in control even when things are moving quickly. A calm, professional and approachable manner is essential, as is the ability to manage multiple client relationships and balance individual needs with care and discretion.

This role is ideal for someone who sees administration as a skilled, long-term profession and genuinely enjoys structured, detail-focused work. You’ll value stability and long-term employment, take pride in supporting both clients and colleagues, and understand the importance of confidentiality, accuracy and consistency in everything you do.

Experience & Requirements

• Minimum 2 years’ experience in an administrative or customer service role
• Experience working with client data and CRM systems
• Confident working in a professional services environment
• Bookkeeping experience seen as a benefit (but isn’t essential)
• Driving licence required
• Right to work in the UK

No formal qualifications are required.

Benefits

• Bonus and performance incentives
• Health Benefits (Reimbursement for multiple health costs)
• Access to an Online GP
• Company pension
• Free on-site parking

Working Hours are Monday to Thursday 9am - 5pm and Friday 9am - 3pm with an unpaid lunch break.