Description Lucera® is a New York–based financial technology firm (owned by BGC Group, NASDAQ: BGC) offering high-performance, co-located infrastructure, connectivity and trading platform solutions for financial services clients worldwide. We deliver FX & FI SaaS trading platforms and low-latency infrastructure from global hubs including New York, Chicago, Frankfurt, London, Tokyo, and Singapore. Our Belfast office supports our global client base as a centre for engineering, DevOps and customer support, with white-glove service and innovative solutions. Description We’re seeking a proactive Accounts Receivable Assistant to join our Belfast team. This role is central to managing billing operations for our monthly co-location, connectivity, and platform services. You will ensure accurate invoicing, timely collections, and strong billing analytics to support Lucera’s scalable growth. Key Responsibilities • Prepare and issue monthly invoices to global clients, tracking usage, service tiers, and contract terms. • Coordinate with Sales, Support, and Engineering teams to gather and validate billing data. • Monitor accounts receivable - track payments and resolve billing queries. • Reconcile billing records and client contracts, investigating and resolving discrepancies. • Maintain accurate records in financial systems; assist with month-end close. • Respond swiftly to client billing inquiries with professionalism and clarity. • Provide billing support for new client setups and onboarding processes. What You’ll Need • Experience: 3 years in billing or revenue operations—preferably within financial services, fintech, or SaaS. • Systems & Tools: Strong general IT skills, with solid experience with Excel or other spreadsheet tools. • Attention to Detail: Ability to accurately bill variable usage schedules and resolve discrepancies. • Communication: Clear, customer-focused writing and interpersonal skills. • Team Collaboration: Able to cross-function effectively with multiple teams. • Self-Starter: Comfortable working in a small finance group with autonomy. • Adaptability: Experience with billing irregularities, contract amendments, and rate changes.