Grant Thornton (US) Tech Stack

Big Four audit, tax, and advisory firm with 5,000+ US staff

Professional Services Chicago, IL 5,001–10,000 employees Founded 1924 Partnership

Grant Thornton is a 5,000+ person professional services firm anchored in audit, tax, and advisory—operating as a licensed CPA practice (Grant Thornton LLP) alongside a consulting subsidiary (Grant Thornton Advisors LLC). The stack reflects a services business: heavy Excel/VBA reliance, legacy ERP systems (SAP, Oracle, Workday, JD Edwards), and specialized tax software (CCH, Vertex, Avalara). Adopting Snowflake, Bloomberg, and Active Directory signals infrastructure modernization, while the hiring surge (353 roles posted in 30 days) across finance, security, and engineering—paired with active M&A due diligence and tax process improvement projects—indicates aggressive scaling in service delivery and internal capabilities.

Tech Stack 88 technologies

Core StackC++ Python NumPy Pandas MATLAB Epic Systems SAP Oracle Workday ADP Excel Visual Basic for Applications Stata R RStudio Microsoft Office CCH Microsoft Defender for Endpoint Microsoft Defender for Identity Microsoft Defender for Office 365 Microsoft Defender for Cloud Apps Microsoft Sentinel KQL PowerShell Copilot for Security Microsoft Defender PeopleSoft Vertex Avalara JD Edwards+58 more

AdoptingSnowflake Active Directory ADP Bloomberg Vertex Avalara

ReplacingSnowflake

What Grant Thornton (US) Is Building

◆Challenges

Improving tax processes
Process inefficiencies
Improving financial reporting process
Data protection gaps
Fraud waste abuse
R&d projects on time within budget
Sox compliance
Reducing it risk
Achieving sales and revenue targets
Compliance remediation

▲Active Projects

M&a tax due diligence
Developing tools for client service
Enterprise risk management program assessments
Internal audit outsourcing engagements
Acquisitions
100-day planning and operational transition
Third-party tax software implementations
Risk and control assessments
M&a onboarding
Business income tax planning

Hiring Activity

Steady850 roles · 350 in 30d

Department

Finance

499

Security

Engineering

Consulting

Tax

Sales

Construction

Seniority

Manager

356

Senior

354

Director

Intern

Junior

Mid

Lead

Notable leadership hires: Tax Director, Oracle HCM Lead, Oracle HCM Reporting Lead, Head of Product – Tax, Due Diligence Director

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About Grant Thornton (US)

Grant Thornton (US) is a partnership-based professional services firm offering audit, tax, advisory, and consulting to mid-market and enterprise clients across 16 industries including manufacturing, public sector, and supply chain. Based in Chicago with ~5,000 US employees, the firm operates through two legal entities: a CPA-licensed audit arm (Grant Thornton LLP) and a consulting and tax services subsidiary (Grant Thornton Advisors LLC). Core service lines include audit & assurance, tax planning and compliance, M&A due diligence, enterprise risk management, and outsourced internal audit. The firm hires primarily at manager and senior levels, with active staffing across financial operations, tax, security, and technology roles in the US and internationally (Australia, Peru, India, Canada).

HeadquartersChicago, IL

Company Size5,001–10,000 employees

Founded1924

Hiring MarketsUnited States, Australia, Peru, India, Canada

Frequently Asked Questions

What is Grant Thornton's tech stack?

Excel, VBA, Python, R, Stata, MATLAB for analytics; SAP, Oracle, Workday, JD Edwards for enterprise systems; CCH, Vertex, Avalara for tax software; Microsoft Defender suite for security; and nascent adoption of Snowflake for data warehousing.

What countries does Grant Thornton hire in?

United States, Australia, Peru, India, and Canada. US represents the primary hiring market, with secondary staffing in Asia-Pacific, Latin America, and North America.