Baker Tilly is an advisory CPA firm that operates in the advisory, tax, and assurance sectors. The company offers a range of services including tax strategy, assurance, risk management, and consulting designed to guide clients through business challenges and opportunities. It serves various sectors including construction, energy, financial services, healthcare, manufacturing, and real estate. It was formerly known as Baker Tilly Virchow Krause, L. It was founded in 1931 and is based in Chicago, Illinois.

Protiviti is a global business consulting firm that specializes in delivering deep expertise and insights in finance, technology, operations, data, and legal services across various industries. The company offers a range of services including risk management, internal audit, digital transformation, and cybersecurity solutions. Protiviti serves a diverse client base, including Fortune 100 and Fortune 500 companies, government agencies, and growing businesses. It was founded in 2002 and is based in Menlo Park, California. Protiviti operates as a subsidiary of Robert Half.

Alvarez & Marsal is a professional services firm operating in the management consulting industry. The firm provides a range of services including advisory, business performance improvement, and turnaround management, with a focus on delivering practical solutions to complex business challenges. It primarily serves corporations, boards, private equity firms, law firms, and government agencies across various sectors. It was founded in 1983 and is based in New York, New York.

Ledgent specializes in finance and accounting within the recruitment industry. The company provides staffing solutions for various finance and accounting roles, including accountants, bookkeepers, controllers, and financial planners, among others. It primarily serves businesses in need of finance and accounting professionals. It was founded in 1994 and is based in Orange, California.

Lucca specializes in software as a service (SaaS) solutions for automating HR and administrative processes within various business sectors. The company offers a suite of tools for managing time tracking, leave, expenses, payroll, performance reviews, and employee engagement. These solutions are designed to improve the efficiency and productivity of businesses by streamlining HR and financial tasks. It was founded in 2002 and is based in Paris, France.

EY is a provider of assurance, tax, transaction, and advisory services. The company offers assurance, audit, tax, financial, and business advisory services to automotive, financial, government, entertainment, mining, real estate, technology, and telecommunication industries. It serves customers worldwide. The company was founded in 1989 and is based in London, United Kingdom.