Assistant Controller (CAS Senior Accountant/Supervisor)
Rochester, NY | 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
$72,000–$95,000 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, Reader Rankings (Local, Rochester Business Journal) 2023-2026,
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.
Skills Required
- Associate's in Accounting
- Bachelor's degree in Accounting (preferred)
- 4+ years accounting experience with nonprofit exposure
- Strong month-end close and reconciliation skills
- Experience with QuickBooks Online, Intacct, and Bill.com
- Excellent communication and client service mindset; ability to manage multiple engagements
- CPA or CMA credential (a plus)
What We Do
Insero is a Rochester-based accounting and advisory firm serving businesses, nonprofits, government entities, schools, private equity firms, and individuals. Through its CPA and advisory entities, the company provides audit and assurance, accounting, tax preparation and planning, business consulting, transaction advisory, and related financial services. Insero emphasizes relationship-driven guidance, technology-enabled processes, financial clarity, and sustainable growth for its clients across the Northeast and Midwest.
