InstaGroup
Purchase Ledger Clerk
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About InstaGroup
At InstaGroup, we are nationally recognised for our experience, technical knowledge, and expertise as leading installers of energy efficiency and renewable solutions. Established in 1980 with significant opportunities for growth across social housing, local authorities, main contractors, and other funded project channels.
Our services span across Insulation, Solar Energy, Heating Solutions, and increasingly in Fire Safety and Building Remediation. Supported by a comprehensive product offering, we are committed to sustainability, with over 80% of the materials we use sourced from recycled or sustainable origins.
Our commercial success is built on strong relationships, market intelligence, and commercial discipline.
Our mission is to transform the energy sector by delivering innovative, sustainable solutions that surpass our customers' expectations. Through our commitment to excellence, integrity, and environmental responsibility, we aspire to lead the field in energy advancement.
About the Role
We are looking for an experienced Purchase Ledger Clerk to join our Finance team on a full-time, permanent basis. You will have proven accounts payable experience and be confident managing a busy ledger accurately and independently.
You will take ownership of the day-to-day purchase ledger, including processing invoices and credit notes, purchase order matching, supplier statement reconciliations, query resolution, payment runs and maintaining accurate supplier accounts.
This is not a trainee role. We need someone who already understands the end-to-end purchase ledger process, can work confidently within established controls and will quickly become a reliable member of the Finance team.
Key Responsibilities
As an experienced member of the Finance team, you will be responsible for:
- Processing supplier invoices and credit notes accurately and promptly.
- Match invoices to purchase orders and resolve discrepancies.
- Check coding, VAT treatment and authorisation before posting.
- Manage supplier queries professionally by email and phone.
- Reconcile supplier statements and resolve outstanding items.
- Prepare and support accurate, timely supplier payment runs.
- Process employee expenses in line with company policy and VAT rules.
- Monitor aged creditors, debit balances and unallocated credits.
- Support month-end purchase ledger reconciliations and accruals.
- Maintain clear records, audit trails and strong financial controls.
- Work with Procurement and Finance colleagues to improve purchase-to-pay processes.
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You will be expected to take ownership of your workload, meet deadlines and proactively resolve issues as they arise.
Key Areas of Focus
The role is centred on maintaining an accurate, well-controlled purchase ledger and providing a dependable service across the business.
Area 1 – Accurate invoice processing
Ensure invoices and credit notes are processed promptly with correct PO matching, coding, VAT treatment and approval.
Area 2 – Supplier account management
Maintain accurate supplier accounts, complete regular statement reconciliations and take ownership of supplier queries.
Area 3 – Payments and month-end
Support timely payment runs and provide reliable purchase ledger information for month-end close and accruals.
Area 4 – Controls and continuous improvement
Follow financial controls, maintain a clear audit trail and identify practical improvements to purchase-to-pay processes.
Success in the role means accurate processing, effective query resolution and consistent ownership of the purchase ledger.
Skills & Experience
What we're looking for
We're looking for an experienced Purchase Ledger / Accounts Payable professional with strong practical knowledge and a track record of accurate, dependable work.
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You'll ideally have:
- Proven experience in a Purchase Ledger or Accounts Payable role.
- Strong practical knowledge of the end-to-end purchase ledger process.
- Experience of supplier statement reconciliations, queries and payment runs.
- Good working knowledge of VAT on supplier invoices and expenses.
- Confidence using finance systems and good Excel skills.
- Strong numerical accuracy, attention to detail and problem-solving skills.
- Good organisation with the ability to prioritise a busy workload independently.
A relevant qualification such as AAT is welcome but not essential; practical experience and competence are more important.
Behaviours
We're looking for someone who:
- Takes ownership of tasks and follows them through to completion.
- Takes pride in producing accurate, high-quality work.
- Is reliable, organised and consistently meets deadlines.
- Works well as part of a team and supports others.
- Communicates professionally with suppliers and colleagues.
- Uses sound judgement and raises issues promptly when needed.
- Has a positive, professional attitude and looks for practical improvements.
What we Offer
- Competitive salary, dependent on experience
- Bonus scheme at 12%
- A full-time, permanent role with ongoing development opportunities.
- Ongoing support from experienced finance professionals.
- A supportive Finance team that values accuracy and ownership.
- Opportunity to contribute to process improvements.
- Clear opportunities to broaden your finance experience.
- 25 days leave, plus bank holidays (increasing to 28 days after 5 years' service)
- Medicash healthcare & Life insurance (3x annual salary)
- Regular staff events
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