Assistant Controller

Prosimo.io
Prosimo.io

Accounting & Finance

Holbrook, NY, USA

USD 140k-170k / year

Posted on Jul 13, 2026

Assistant Controller / Accounting Manager

📍 Holbrook (Long Island) | Onsite (WFH flexibility ~1x/month)

💰 $140,000–$170,000 + generous benefits


A privately owned commercial construction company on Long Island is seeking an Assistant Controller to lead all accounting and financial operations. This is a high-impact, hands-on leadership role overseeing everything from cash flow and payroll to job costing across a fast-moving portfolio of active projects

.
This company operates with 25–40 projects at any given time, ranging from $1M–$10M, with timelines spanning a few weeks to 2–6 months. You’ll partner closely with leadership and Project Managers to ensure financial accuracy, profitability, and strong business performanc

e.
🔑 What You’ll

  • OwnMonitor daily cash flow, receivables, and collecti
  • onsOversee bank reconciliations and manage a $5M–$12M line of cre
  • ditPrepare and maintain cash flow forecasts aligned with project and payroll cyc
  • lesOversee weekly in-house payroll for ~200 employees (scaling to ~600 W2s annual
  • ly)Manage full payroll cycle including tax filings, union requirements, compliance, and year-end report
  • ingSupervise payroll team and ensure accurate, timely process
  • ingAnalyze financials across 25–40 active projects on an ongoing ba
  • sisReview job cost reports, including under/overbilling, cost overruns, and margin eros
  • ionPartner with Project Managers to maintain accurate job profitabil
  • ityTrack WIP and ensure proper revenue recognit
  • ionPrepare financial data for tax fili
  • ngsLead annual audit process and coordinate with external CPA f
  • irmSupport insurance reporting and compliance requireme
  • ntsManage and mentor accounting team (AP, AR, Payro
  • ll)Maintain efficient workflows and clear ownership across accounting functi
  • onsOversee benefits administration (FSA, 401k, et
  • c.)Support onboarding and payroll-related HR functi

ons
🛠️ What You B

  • ring8+ years of accounting experience, ideally in construction or project-based environm
  • entsBachelor’s degree in Accounting or Finance (requi
  • red)Strong foundation in GL, financial reporting, and anal
  • ysisExpertise in cash flow management, forecasting, and bank reconciliat
  • ionsExperience with in-house payroll (highly prefer
  • red)Exposure to job costing/WIP (strong p
  • lus)Audit support and tax prep experi
  • enceAbility to oversee AP/AR and payroll teams effecti
  • velyAdvanced Excel skills; experience with Foundation a

plus************ LONG ISLAND CANDIDATES ONLY

****Please Note: This position is open to candidates who are authorized to work in the United States without the need for current or future visa sponsorship. We are not able to consider C2C arrangements or third-party submissi

ons.