James Brennan in

James Brennan

Login to view DISC.
Managing Partner, Upstate New York at Deloitte
📍 Rochester, New York, United States

James Brennan is the Managing Partner for Deloitte in Upstate New York, leading over 180 professionals across Buffalo and Rochester. With over 30 years of experience, he provides audit, tax, and advisory services to top regional businesses and is a Certified Public Accountant.

James is actively involved in shaping future business leaders within his community. He serves on the Deans Advisory Council for the School of Business at his alma mater, St. John Fisher University, contributing to the development of the regions talent pipeline.

He is a past recipient of the Rochester Business Journals "40 Under 40" award and was named Accounting Alumnus of the Year by St. John Fisher University.

Read the full overview →
Experience
33 Years
Current Role
Managing Partner, Upstate New York
Location
Rochester, New York, United States
Personality Overview

How James shows up

Communication Style
Decision Approach
Work Preference

Behavioral traits and communication patterns that shape how this person evaluates opportunities, builds trust, and makes decisions in professional settings.

Login to view personality overview.
Priorities

Topics James cares about

M&A Strategy
Frequently shares insights on navigating M&A markets, managing risk, and harmonizing culture, showing a focus on business transformation through deals.
AI Implementation
Focuses on moving beyond AI experimentation to scaling the technology for real business impact, as highlighted in his posts on 2026 tech trends.
+5 more topics Login to view topics
Career

Work history

6-2017
Managing Partner, Upstate New York
Deloitte
8-2014 - 8-2022
Office Audit Leader for Upstate NY
Deloitte
9-2003
Partner
Deloitte
10-1994 - 9-2003
Staff/Senior - Senior Manager
Deloitte
6-1992 - 10-1994
Staff Accountant
Walker, McGrath & Thaney
In the press

Media appearances

Jim Brennan, Managing Partner – Audit & Assurance | Deloitte US. Featured in Deloitte
See now
Education
1989 - 1991
Bachelor of Science
St. John Fisher University
1988 - 1989
Accounting
Villanova University
Social presence
in
Behavioral profile

DISC profile (public)

DISC behavioral profile

Dominance, influence, steadiness, and calculativeness scores with guidance on how this person prefers to communicate and decide.

Login to view DISC.

Other Deloitte Employees

Explore more public profiles from related professionals.

More profiles

Discover additional public profiles from our index.

Unlock the full playbookSee exactly how to sell to James. Free, 10 seconds.