Accounts Receivable & Billing Specialist

Kigen is an Arm and SoftBank backed technology company building the operating system that secures connectivity for the Internet of Things. Our eSIM and iSIM OS is embedded in devices shipping around the world, and we serve customers across Europe, Asia-Pacific and beyond. We are a growing, multi-entity group operating across the UK, India, Japan, South Africa, Denmark, France and United States running a single global ERP (NetSuite) with a consolidated group ledger, with third party local accounting and tax support where required. Our commercial model spans perpetual software licensing, hardware module supply, SaaS subscriptions and over-the-air (OTA) services — which makes our billing and receivables environment unusually varied and genuinely interesting to work in. Purpose of the role This role owns the financial accuracy of the accounts receivable and customer invoicing desk for the group. Acting as the bridge between finance and commercial operations, it exists to make sure every sale — across every entity, currency and revenue model — is billed accurately and on time, that cash is collected efficiently, and that our receivables ledger is clean, well-reconciled and audit-ready. It is a hands-on, detail-driven position with real ownership. You will be the go-to person for billing queries and collections across the group, working closely with the wider finance team, commercial operations and customers directly. What makes this role different Kigen's receivables environment is more complex than a typical AR desk — and that's a big part of what makes it rewarding: Multi-entity and multi-currency, all consolidated in a single NetSuite ledger with a March year-end. Several distinct revenue models — perpetual OS licences, hardware module reselling (including drop-ship), recurring SaaS subscriptions and usage-based OTA services — each with its own billing logic and timing. Cross-border transactions that bring indirect tax (VAT / GST) and withholding-tax considerations into the invoicing chain. A varied customer base, from global tier-one device makers to smaller connectivity providers — so credit-control judgement and relationship handling matter. A scale-up in build mode — we're actively improving and automating finance processes, so there's genuine scope to shape how the AR desk runs rather than just operate it. AI in the finance function — our CFO actively champions the adoption of Claude by Anthropic, and you'll help shape how billing is run with AI assistance while keeping key human-in-the-loop controls. What you'll do Raise, review and issue customer invoices in NetSuite across all group entities, currencies and revenue models, with the correct commercial terms, purchase orders, contract detail and tax treatment. A third-party billing module will go live and will need managing and integrating with NetSuite. Own credit control and collections group-wide using our automated dunning agent — proactively chasing overdue accounts, monitoring ageing and keeping days-sales-outstanding under control, and issuing customer statements. Match and allocate customer receipts across multiple bank accounts and currencies, reconcile the AR ledger, clear differences and maintain accurate customer master data, credit terms and limits. Support month-end close with AR reporting, revenue cut-off and aged-debt analysis, and provide receivables information for management reporting, cash forecasting and the annual audit. Contribute to continuous improvement and automation of the order-to-cash process — with scope to cross-train and support the employee expense platform and bank reconciliations. What you'll bring Essential Solid, demonstrable experience in accounts receivable, billing and/or credit control, ideally in an international or multi-entity business. Hands-on ERP experience — NetSuite strongly preferred; comparable systems (SAP, Oracle, MS Dynamics) considered. Experience of international transactions, working with multiple currencies and reconciling across bank accounts. A high standard of accuracy and attention to detail. A confident, professional communicator — able to chase payment firmly but tactfully and liaise across finance, sales and customers. Well organised and self-directed, comfortable owning a workload with limited supervision in a fast-moving environment. Nice to have Demonstrable experience of using AI without compromising accuracy or integrity. Exposure to technology, SaaS, telecoms, semiconductor or IoT billing. Familiarity with subscription and usage-based billing models. Working knowledge of indirect tax (VAT / GST) and/or cross-border withholding tax. Experience in a private-equity- or venture-backed scale-up. Part-qualified accountant (CIMA / ACCA / equivalent) or actively studying — or a strong qualified-by-experience track record. Experience with collections / billing automation or cash-application tooling. The working arrangement This is a permanent, part-time role, fully remote within the UK — ideal for an experienced AR specialist who wants a reduced-hours arrangement. You'll work within our global finance team and interact daily with colleagues across time zones, so some flexibility to overlap with UK/European and APAC counterparts is helpful. We'll tailor the hours to the right candidate. We are an Equal Opportunity Employer and do not discriminate against any employee or applicant for employment because of race, colour, sex, age, national origin, religion, sexual orientation, gender identity, disability or any other protected characteristic.