[Remote] Readily Available Interim Assistant Controller | High-Growth Fintech | Remote | $100-$150/hr

Note: The job is a remote job and is open to candidates in USA. Harmonic Finance Inc is a venture-backed fintech focused on improving financial access for hourly and frontline employees. The Assistant Controller will lead the day-to-day accounting operations, ensuring accurate financial reporting and maintaining strong internal controls in a high-growth environment.


Responsibilities

  • Lead and manage the company’s day-to-day accounting operations, including general ledger, close process, reconciliations, and financial reporting
  • Ensure timely and accurate GAAP-compliant monthly, quarterly, and annual reporting
  • Support audit and regulatory processes, maintaining strong documentation and internal controls
  • Partner cross-functionally to support product expansion, enterprise customer onboarding, and operational initiatives
  • Assist in modernizing finance infrastructure, including ERP optimization or implementation (e.g., NetSuite) and adoption of next-generation finance tools (e.g., Campfire)
  • Drive process improvements, automation, and scalable accounting controls to support high-growth operations
  • Support ad hoc financial analysis and operational projects tied to new customers, partnerships, and growth initiatives
  • Manage and mentor members of the accounting team, fostering a high-performance and accountable culture

Skills

  • Experience with Workday
  • Proven experience as an Assistant Controller, Accounting Manager, or similar role in a tech startup or high-growth environment
  • Strong experience with month-end close, financial reporting, audits, and internal controls
  • Deep understanding of GAAP and core accounting processes
  • Experience supporting ERP systems and accounting system implementations
  • Ability to operate in a hands-on, fast-paced, entrepreneurial environment with visibility to senior leadership
  • Experience implementing financial systems and processes to enable growth
  • Familiarity with fintech, SaaS, embedded finance, payroll integrations, or payments businesses
  • Exposure to strategic initiatives like M&A, new product launches, integrations, or scale-phase operations

Company Overview

  • Harmonic is a B Corp Recruitment & Executive Search company that partners with some of the fastest growing start-ups, scale-ups, and entrepreneur-led organisations worldwide. It was founded in 2018, and is headquartered in Boston, Massachusetts, US, with a workforce of 2-10 employees. Its website is https://harmonicfinance.com/.

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