Senior Billing & A/R Analyst

Garner’s mission is to transform the healthcare economy, delivering high-quality and affordable care for all.

We are fundamentally reimagining how healthcare works in the U.S. by partnering with employers to redesign healthcare benefits using clear incentives and powerful, data-driven insights. Our approach guides employees to higher-quality, lower-cost care, creating a system that works better for everyone. Patients achieve better health outcomes, employers spend healthcare dollars more effectively, and physicians are rewarded for delivering exceptional care rather than performing more procedures.

Garner is one of the fastest-growing healthcare technology companies in the country. Our products are trusted by the most sophisticated employers and providers in the industry, and we are building a team of talented, mission-driven individuals who are motivated to make a meaningful impact on healthcare at scale.

We are looking for an exceptional Senior Billing & A/R Analyst to join our Finance team. You will own Garner's monthly client invoicing and Accounts Receivable function end to end — a high-volume, high-visibility platform with complex internal and external requirements. You will oversee the production and distribution of ~800 invoices per month, own the controls, validation and review processes that ensure complete and accurate invoicing, manage collections and the A/R inbox, and keep cash application current to support a timely month-end close.

You'll join a Finance organization that has invested heavily in automation. Much of the recurring work is already automated through a suite of internal AI tools (Claude "skills"), and you will be responsible for operating, maintaining, and continuously improving that tooling rather than recreating manual processes. Beyond running the day-to-day function, you will own the KPIs that measure Billing and A/R performance, identify opportunities to strengthen our processes and controls and drive improvements that make the function more accurate, efficient and scalable.

Garner is headquartered in NYC, but this position is available for individuals who are comfortable with remote work and occasional travel to HQ.

• Own the monthly invoicing process end to end. Manage the invoicing queries and tooling, build and release invoice batches, and generate and distribute ~800 invoices per month across standard, self-bill, and bespoke client arrangements.

• Ensure complete and accurate invoicing. Own the controls, validation and review processes across invoice completeness, plan coverage, rates, invoicing groups, and banking data. Investigate and resolve exceptions with cross-functional partners and ensure adjustments and client-specific requirements are accurately reflected.

• Own Accounts Receivable & collections. Manage the A/R balance from issuance through cash receipt; including collections and follow-up on overdue balances, ACH pulls and re-attempts; and timely cash application and deposit classification to support month-end close.

• Manage billing inquiries and issue resolution. Own the A/R inbox and respond to client, broker, and internal billing questions within established service level agreements, coordinating with internal teams to resolve issues efficiently.

• Leverage and continuously improve our automation. Use our internal Claude skill suite as the default way to run recurring tasks (self-bills, cash application, dashboards, batch QA), and improve those skills as the business continues to evolve.

• Maintain client billing data and portals. Keep invoice contacts, terms, and banking details accurate;