Accounting Operations Associate

Mainstay
United States
Workplace: RemoteFull timeFunction: Finance & AccountingExperience: 1-3 yearsSkills: ["Attention to detail","Follow-through","Communication","Process improvement mindset","Systems/process mindset"]

Own AP and AR operations end to end, including invoice and payment runs, customer invoicing and collections, aging maintenance, vendor onboarding, and W-9/W-8 handling. Manage daily treasury and cash positioning, execute transfers and reconciliations, and serve as the primary administrator for financial systems and integrations (ERP, Bill.com, banking portals). Support month-end close, reporting, budget-to-actual tracking, and expense and payroll processing.

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FursaFursa
Mainstay
Mainstay
1 week ago

Accounting Operations Associate

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Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 5 hours agoStatus: Live
Reposted: similar role first listed 1 week ago

Job Summary

Own AP and AR operations end to end, including invoice and payment runs, customer invoicing and collections, aging maintenance, vendor onboarding, and W-9/W-8 handling. Manage daily treasury and cash positioning, execute transfers and reconciliations, and serve as the primary administrator for financial systems and integrations (ERP, Bill.com, banking portals). Support month-end close, reporting, budget-to-actual tracking, and expense and payroll processing.
Location: United States
Workplace: Remote
Employment Type: Full time
Job Function: Finance & Accounting
Seniority: Entry level

Key Responsibilities

  • •Own the full AP cycle: process vendor invoices, verify coding and approvals, manage payment runs, and maintain vendor terms.
  • •Own the full AR cycle: generate and send customer invoices, track collections, manage past-due follow-up, and apply cash receipts.
  • •Maintain AP/AR aging schedules, proactively flag risks, resolve discrepancies, and track AP/AR KPIs to drive improvements.
  • •Monitor daily cash positions and execute wire transfers and ACH payments in line with internal controls and approval limits; reconcile treasury and bank accounts.
  • •Act as primary administrator for accounting and treasury/AP-AR platforms (e.g., ERP, Bill.com, banking portals), manage integrations, and support month-end close and reconciliations.

Key Requirements

  • •1–3 years of experience in accounting, bookkeeping, or a related finance role with hands-on AP/AR experience.
  • •Exposure to treasury or cash management tasks (bank transfers, cash positioning, reconciliations) is a plus.
  • •Experience administering or power-using financial systems (ERP, AP/AR platform, or banking portal) with comfort owning troubleshooting and access.
  • •Strong Excel/spreadsheet skills and the ability to work across multiple financial systems.
  • •Strong attention to detail, follow-through, and clear communication with vendors, customers, banks, and internal teams.
Experience:1-3 yearsAccountingBookkeepingTreasuryCash managementAP/AR
Education:
Skills:Attention to detailFollow-throughCommunicationProcess improvement mindsetSystems/process mindset
Tech Stack:ExcelERPBill.comACHWire transfersBanking portalsOnline banking platformsGeneral ledgerPayrollExpense reports

Company Brief

Mainstay
Mainstay operates an AI-native market intelligence and transaction platform for the single-family rental (SFR) industry, aggregating and standardizing data from many sources to help owners, operators, and investors buy, manage, and sell homes.
Industry: PropTech
Company Size: Medium (51 to 250 employees)
Growth: Growth Stage Startup
Funding: Series A
Headquarters: San Francisco, United States
Founded: 2020
Glassdoor
Glassdoor: 3.0
WebsiteGlassdoor