Your Trusted Partner in Financial Excellence

About Probity Partners
At Probity Partners, we believe exceptional accounting is built on more than just numbers—it’s built on trust. Probity Partners was founded by Judie Kieu and Robert Castera to give clients more than just accounting services—we give them peace of mind. Our name, Probity, means “the quality of having strong moral principles; honesty and decency,” and it’s the ethical compass that guides every decision we make.
- 20+ years of industry experience
- Certified professional team
- Comprehensive financial solutions
Our Services

Assurance
We understand that accurate and timely financial reporting is crucial for meeting and the expectations of your company, regulators, and financial institutions. Our priority is to provide a personal approach and ensure your team has access to senior level, experienced professionals throughout the process.

Consulting
We understand that businesses often face new accounting challenges as part of their growth. Our priority is to relieve your team of the burden and uncertainty of your accounting challenges so that you can focus on your business. Our team of experienced professionals will combine their technical expertise…

Outsourced Bookkeeping and Accounting
We understand that accurate and timely financial reporting is crucial for meeting and the expectations of your company, regulators, and financial institutions. Our priority is to provide a personal approach and ensure your team has access to senior level, experienced professionals throughout the process.
Our Leadership Team

Robert Catera
Robert Castera is the Managing Partner and Co-Founder of Probity Partners, specializing in assurance and accounting consulting across industries like life sciences, consumer products, manufacturing, and real estate. He also founded SoCal CPAs, advising clients on audits, financial reporting, and complex accounting matters such as business combinations, revenue recognition, and internal controls.

Judie Kieu
Judie Kieu is an Assurance Partner at Probity Partners LLP, with over 11 years of experience providing audit and accounting services to commercial clients. A licensed CPA in the U.S., she has strong expertise in both IFRS and U.S. GAAP standards, advising businesses on complex accounting and financial reporting matters.