Team
The People Behind Your Numbers
A team of 20+ accounting professionals led by experienced partners who bring CPA oversight, industry specialization, and a commitment to improving how your accounting works
G&S Accountancy is a full-service CPA firm in Rancho Cucamonga, California with a team of over 20 accounting professionals. Led by Managing Partner AJ Singh, CPA, EA and Partner & CTO Neeraj Gupta, the team specializes in construction, transportation, and nonprofit accounting.

Our Team
Leadership
AJ Singh, Partner
CPA & Enrolled Agent
Certified Public Accountant | Enrolled Agent
U.S. Treasury-Authorized Tax Practitioner
AJ Singh is an Enrolled Agent and Certified Public Accountant with over 15 years of experience in tax strategy. As Managing Partner of G&S Accountancy, AJ leads client relationships and oversees the firm's audit defense practice, ensuring individuals and small businesses receive tailored, comprehensive financial services.
With expertise in federal tax planning, business and individual tax preparation, and IRS representation at all administrative levels, AJ serves as a trusted advisor who optimizes tax strategies to align with each client's financial goals. He is actively involved in the Southern California business community and passionate about building long-term partnerships with the firm's clients.

Neeraj Gupta, Partner
Chief Technology Officer
20+ Years Process Automation | Business Systems | Workflow Architecture
Neeraj Gupta is a Partner and the Chief Technology Officer at G&S Accountancy, where he leads the firm's technology strategy, process automation initiatives, and operational infrastructure. With over 20 years of experience in data management, business systems, and workflow automation, Neeraj is the architect behind the firm's CPA-led automation tools.
Under his leadership, G&S has developed proprietary workflow solutions for bank reconciliation, IFTA compliance, ACA reporting, and client document management - turning manual, repetitive accounting tasks into structured, repeatable processes. Neeraj ensures the firm's technology investments translate directly into better client outcomes: faster turnaround, cleaner records, and less manual burden.
Team
Senior Team
Pooja Gupta
Senior Auditor
Pooja leads G&S's attestation practice with over a decade of audit experience. She specializes in preparing workpapers, analyzing audit evidence, and supervising engagements for nonprofits and businesses across industries. With an MBA in Finance and a Master's in Chartered Financial Analysis, Pooja delivers reliable financial reporting and internal control evaluations.
Lorena Contreras
Manager, Tax Resolution Specialist
Lorena brings deep expertise in tax resolution, payroll management, and multi-industry accounting — including manufacturing, construction, real estate, and retail. Bilingual in English and Spanish, she effectively serves a diverse client base and is known for her attention to detail and dedication to helping clients achieve their financial goals.
Ashley
Team Member
Profile coming soon.
Jagvir
Team Member
Profile coming soon.
Julia Monir
Marketing Director
Julia leads G&S's marketing, communications, and outreach efforts, developing campaigns that highlight the firm's trusted expertise while strengthening relationships with local businesses and clients. With a B.S. in Business Administration from UC Riverside, she brings both business insight and a people-centered approach to building the firm's presence in the Southern California community.
Riya Manocha
Senior Accountant
Riya brings over 10 years of experience in financial accounting, business planning, forecasting, and tax resolution. She holds advanced accounting credentials and has a strong track record handling complex cases with the IRS, FTB, EDD, CDTFA, and other agencies. Her entrepreneurial skills have been invaluable in helping early-stage startups assess their financial positions and navigate growth.
Abhinav Aggarwal
Senior Accountant
Abhinav has been with G&S since 2020, bringing over 10 years of accounting experience. He holds a Bachelor's in Commerce and an MBA in Finance. As Senior Accountant, he specializes in financial projections, bookkeeping, internal management reporting, financial analysis, and sales tax returns — providing accurate insights and tailored solutions to help clients meet their business objectives.
Team
Our Team
20+ professionals. Two partners. One shared commitment to your success.
Hugo Fernando Quique A.
Audit Manager
Tony Nava
Accountant & Payroll Specialist
Vanessa Rubio
Tax & Compliance Specialist
Sam Perry
Staff Auditor
Ken Shaw
Team Member
In Memoriam
Preety Gupta, CPA
Co-Founder & Partner
Preety's vision, leadership, and dedication built the foundation this firm stands on today.
Read Preety's StoryGet in touch
Ready to Simplify Your Finances?
Schedule a free consultation and find out how G&S can help your business grow.