This is a remote position.

Assistant Controller (CAS Senior Accountant/Supervisor)

Fully Remote (ET Zone) | Full-Time or Part-Time

Join Insero’s Client Accounting Services (CAS) team and enjoy meaningful client work, schedule flexibility, and a variety of projects supporting a variety of organizations. If you want a role where every day looks different—and your expertise has real impact—this is it.

Client Accounting Services: Our Client Accounting Services Group has been around for over 20 years and is made up of dedicated personnel whose only assignments are supporting our client base. We are full-time CPAs, CMAs, Accountants and Business Managers. We understand the issues that Controllers and CFOs face every day – and our technology, experience and flexibility add real value. Accounting Consulting for us is not something that fills our downtime; it is our focus all year long. Our services range from bookkeeping to budgeting and forecasting. Our Client Accounting Services Team ensures our clients have the information and advice they require to run their business/organization.

What You’ll Do

• Lead/support full‑accrual month‑end close, journal entries, reconciliations, A/P, A/R, payroll, and financial reporting.
  
• Analyze and clean up general ledger activity to ensure accuracy.
  
• Assist with cash flow, disclosures, budgeting, and annual planning.
  
• Communicate directly with clients and coordinate with auditors and external partners.
  
• Improve processes, strengthen internal controls, and help upgrade or implement accounting systems.
  
• Supervise staff as needed.
  

Requirements

What You Bring

• Associate’s in Accounting required; Bachelor’s preferred.
  
• 4+ years accounting experience with nonprofit exposure (industry or public).
  
• Strong month‑end close and reconciliation skills.
  
• Experience with QuickBooks Online, Intacct, and Bill.com strongly preferred.
  
• Excellent communication, client service mindset, and the ability to manage multiple engagements.
  
• CPA/CMA a plus.
  

Compensation

$70,000–$92,000 base salary, depending on experience. Additional discretionary bonus opportunities available.

Benefits

Why Insero

• 4–5 weeks PTO + 16 paid holidays
  
• Remote/hybrid flexibility
  
• 401(k) with firm contributions
  
• Tuition reimbursement program
  
• Robust benefits offerings
  
• Spot bonuses, CPA bonus, training & technology investment
  
• Ranked the #1 Best Company to Work For in New York in the Medium Companies category (State, NYS-SHRM and Best Companies Group) 2025 & 2024, ranked #3 in 2023 and again #1 in 2022.
  
• Best Accounting Firms to Work For (National, Accounting Today and Best Companies Group) 2012-2025.#1 Best Accounting Firm and Most Innovative Workplace, Reader Rankings (Local, Rochester Business Journal) 2025 and 2024, consistently ranked since joining in 2018.
  

At Insero, we believe in being passionate about people, delivering excellence, growing to new heights, and going further together. If these values resonate with you, we encourage you to apply!

Insero is an Equal Opportunity Employer.