Accounts Payable & Billing Specialist

TL;DR Fast-growing measurement company looking for a hands-on finance professional to support the day-to-day accounting operations of the business. This role offers the opportunity to work across multiple areas of the finance function while helping build scalable processes for a growing business. Who we are Adelaide is the leader in one of the fastest-growing areas of advertising: attention measurement and activation. Since 2020, we've become the trusted media quality measurement partner for 40% of Fortune 50 brands who rely on our award-winning AU metric to plan smarter campaigns, invest in high-quality inventory, and dive stronger business outcomes. Adweek has called Adelaide's AU " the attention economy's most widely recognized metric," and AdExchanger named it "Best measurement/Analytics Capability." Our business continues to scale rapidly, outperforming the industry with a 35% three-year CAGR. What began as a 9-person startup in 2019 is now a team of more than 75. The past year brought meaningful expansion. We launched the AU ecosystem, giving brands, media agencies, and publishers a unified way to leverage and transact on AU. We broadened our programmatic footprint with custom bidding in GoogleDV360 and pre-bid targeting in The Trade Desk, and grew our partner roster to over 125 platforms and publishers. Leading brands like Dell, Diageo, an Jaguar Land Rover —along with premium publishers such as Hearst, Spotify, and The New York Times—continue to demonstrate AU's value across the media lifecycle. Adelaide is backed by prominent investors such as Human Ventures (Joe Marchese), Aperiam Ventures (Joe Zawadzki & Eric Franchi), WGI (Jonah Goodhart), and Irwin Gotlieb. We have a NYC office and a London WeWork, but operates as a remote-friendly company with flexible work options. How we work We're a team of action-oriented doers—management rolls up their sleeves and contributes every day. Our culture is rooted in curiosity and rigor: opinions are held lightly, debated openly, and strengthened through testing. Everyone is encouraged to play a role in shaping planning and strategy. We're built on belonging and growth—94% of employees report a strong sense of belonging, and 81% say they’re happy at work. Position overview This position reports to the Accounting Operations Manager and is responsible for billing and invoicing, accounts receivable, accounts payable, revenue reconciliation, and month-end close support. While this role sits within the Finance team, its impact extends across the business. Accurate billing, collections, and financial records help ensure Adelaide operates efficiently and maintains accurate visibility into the health of the business. In this role, you'll help ensure invoices are issued accurately and on time, payments are collected efficiently, vendors are paid promptly, and financial records remain organized and reliable. As Adelaide continues to grow, this role will help ensure our financial operations remain scalable, accurate, and dependable. We’re seeking a candidate with 4-5 years of experience in bookkeeping, accounting operations, or related finance functions who is comfortable working in a fast-paced environment. This is a fully remote role within the United States, with opportunities to connect with colleagues at our New York office. You’ll need to be in NYC a few times per year. What you'll learn An important part of our culture is continuous learning and the open sharing of ideas. We offer: Access to a broad network of investors and advisors who can help you and your team succeed Mentorship from executives with decades of experience in adtech and media Regular internal knowledge-sharing sessions An education budget to support ongoing professional growth and development In this role you'll learn: How billing, accounts receivable, accounts payable, and month-end accounting activities work together to support a growing business How to manage the full revenue cycle, from invoice generation and delivery through cash collection and reconciliation How to identify opportunities to improve processes, increase efficiency, and strengthen financial controls How to partner effectively with Sales, Client Success, and Finance teams to resolve billing issues and support customer accounts How a high-growth company builds scalable accounting processes and financial operations Core responsibilities Accounts Receivable - Apply cash receipts daily and maintain accurate supporting documentation; proactively follow up on outstanding remittances to ensure timely cash application. Accounts Payable - Code all incoming invoices accurately and promptly, routing for internal approval as required. Maintain strong attention to detail while reviewing invoices and supporting appropriate financial controls. Apply appropriate use of prepaid accounts, collect W-9s from new vendors, and manage vendor setup in QuickBooks. Customer Communications - Respond to customer inquiries in a timely and professional manner, including questions related to invoices, billing adjustments, and statements of account. Employee Expense Reimbursements - Review employee travel and expense reimbursement submissions for accuracy, appropriate GL coding, and compliance with company policy. Billing & Invoicing - Assist with the end-to-end billing process, including generating invoices, sending invoice communications, submitting invoices through client portals, and tracking successful delivery to ensure no invoices fall through the cracks. What you'll bring Bachelor's degree in Accounting, Finance, Business, or a related field preferred 4-5 years of experience in bookkeeping, accounting operations, accounts receivable, accounts payable, or related finance functions Strong QuickBooks experience Experience supporting recurring billing and invoicing processes Advanced Excel / Google Sheets proficiency Strong attention to detail and organizational skills Strong written and verbal communication skills Ability to manage multiple priorities and deadlines in a fast-paced environment Experience working with CRM and business systems to support billing and customer account management Benefits Health & Wellness Medical, dental, and vision insurance Paid time off Parental leave Employee development & wellness stipend Holiday break Volunteer time off Financial & Compensation Competitive salary Performance-based quarterly bonus Stock options 401(k) retirement plan Workplace & Equipment Remote-first environment New York office access Access to available WeWork spaces Equal Employment Opportunity (EEO) Statement Adelaide is proud to be an Equal Opportunity Employer, committed to fostering a diverse, equitable, and inclusive workplace where all employees can thrive. We consider all qualified applicants for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other legally protected status. Our commitment to equal opportunity employment extends beyond basic compliance to encompass the active cultivation of a workplace that values different perspectives, backgrounds, and experiences.