Controller

Our client is a fast-growing, venture-backed SaaS company in the AI space, serving a large, global customer base. The business is fully remote with a distributed, global team. The Role We're looking for a hands-on Controller who owns the numbers end to end — someone who does the work personally rather than just reviewing it. You'll partner directly with company leadership and the wider finance function, bringing enterprise-grade financial discipline to a business that runs at a scale well beyond its headcount. With high transaction volumes, a subscription-based revenue model, and a lean finance team, the role demands both precision and pace. You'll begin as an individual contributor and grow the accounting function as the company scales. Key Responsibilities Own the monthly close process and management reporting in full — financial statements, recurring revenue metrics by product/plan, gross margin analysis, expense classification, and cost capitalization, all in accordance with US GAAP. Oversee billing and revenue integrity — reconcile payment processor data against internal reporting systems, track refunds/credits/disputes and bad debt, monitor processing fees, and manage recovery workflows for failed payments. Administer global payroll and contractor payments — run payroll for employees and international contractors across multiple platforms and currencies, and maintain the headcount and compensation records. Manage accounts payable and vendor relationships — invoice review and approval workflows, vendor disbursements, and company-wide spend visibility. Lead cash and treasury management — monitor balances across banking relationships, ensure payroll and large payments are properly funded, and maintain disciplined treasury processes. Support audit and diligence readiness — partner with top-tier external auditors and advisors on annual audits, diligence requests, and tax matters, keeping the books audit-ready at all times. Produce the recurring business reporting that leadership relies on — recurring revenue, churn, upsell, and team performance metrics. Own net revenue retention (NRR) reporting and cohort-level analysis of retention, expansion, and churn by product, plan, and customer segment. Own and evolve the finance systems stack — select and implement scalable accounting, billing, and banking tools, and drive automation wherever possible. What You'll Bring Prior experience as a Controller or senior accounting leader at a large-scale, product-led-growth SaaS company with a self-serve, high-transaction-volume business model. Deep, hands-on experience with high-volume subscription billing systems. A recognized professional accounting qualification (CPA, ACA, ACCA, or equivalent). Strong fluency in US GAAP. A true hands-on operator, comfortable owning the close solo before building out a team. Based in the UK or Canada. Nice to Have Experience taking a company through a Big 4-caliber audit. Experience with usage- or credits-based pricing models. Experience preparing a company for a financing round, M&A process, or IPO-level reporting standards. Experience at a fast-growing, remote-first company.