Accounts Receivable & Billing Specialist

About us

We are champions of rail, inspired to build a greener, more sustainable future of travel. Trainline enables millions of travellers to find and book the best value tickets across carriers, fares, and journey options through our highly rated mobile app, website, and B2B partner channels.

Now Europe’s number 1 downloaded rail app, with over 125 million monthly visits and £5.9 billion in annual ticket sales, we collaborate with 270+ rail and coach companies in over 40 countries. We want to create a world where travel is as simple, seamless, eco-friendly and affordable as it should be.

Today, we’re a FTSE 250 company driven by our incredible team of over 1,000 Train liners from 50+ nationalities, based across London, Paris, Barcelona, Milan, Edinburgh and Madrid. With our focus on growth in the UK and Europe, now is the perfect time to join us on this high‑speed journey.

We are looking for a proactive and detail‑oriented Accounts Receivable & Billing Specialist to manage accurate billing and effective cash collection across our B2B clients and Partners in our UK and International sales ledgers. In this role, you will ensure timely invoicing, maintain accurate accounts receivable records, and manage outstanding debt to minimise financial risk and protect revenue.

You will monitor aged debt, follow up on overdue balances, resolve billing queries, and support credit assessments for new and existing customers. Working closely with Finance, Commercial, Data and external partners, you will deliver a high standard of service in a fast‑paced, customer‑focused environment while ensuring SLAs are met.

This role is ideal for someone who combines strong communication skills with analytical thinking, enjoys problem‑solving, and takes pride in balancing customer relationships with financial discipline, accuracy, and continuous improvement.

• Set up new customers in D365 and TBS systems, ensuring accuracy and completeness of data.

• Amend TBS commercials in line with updated agreements and pricing structures.

• Review and process client incentives in accordance with agreed terms.

• Implement and manage RPI increases in line with contractual agreements.

• Manage and prioritise the Billing Jira board to ensure timely resolution of issues.

• Respond to customer billing and revenue‑related email queries.

• Investigate and resolve data queries relating to revenue and invoicing.

• Maintain the Accounts Receivable ledger, ensuring accuracy and integrity.

• Conduct new client credit checks and support onboarding decisions.

• Post and reconcile sales receipts.

• Proactively chase aged debt to improve cash flow and reduce exposure.

• Monitor ongoing credit risk and escalates concerns appropriately.

• Process customer refunds accurately and efficiently.

• Manage cash collections via Direct Debit runs.

• Ownership of Receivables / Billing Month End close procedures, produce Aged Debtors, Billing reconciliation, KPI’s and any ad‑hoc reporting as required

• Work closely with TPS, Commercial, Product, and Data teams to ensure revenue processes are aligned and scalable.

• Act as a key point of contact for revenue and billing queries across departments.

• Involvement with system and process improvements, feeding into our ongoing Finance Transformation project.

• Ensure internal controls and financial compliance standards procedures are followed and reviewed with a Continuous Improvement mindset to minimise risk.

• Other ad‑hoc finance tasks as required.

• Experience in Accounts Receivable, Credit Control, or Revenue Operations.

• Experience using finance systems and Microsoft packages - Intermediate proficiency in Excel.

• Excellent analytical and problem‑solving skills, with strong attention to detail and financial accuracy.

• Ability to prioritise workload in a fast‑paced environment.

• Excellent communication and stakeholder engagement skills, with the ability to influence and build trust across functions.

• Solid understanding of accounting principles and month‑end reporting processes.

• Well organised and able to…