Job Summary Tri Source International is a growing general Business Process Outsourcing (BPO) organization headquartered in Valencia, California. We support clients across the United States, Mexico, Latin America, and other international markets through customer service, sales, back-office, and technology solutions.
We are seeking an experienced Senior Accounting Manager / Controller to take ownership of the accounting and financial operations for multiple businesses and entities under common ownership.
This is a hands-on role and the primary accounting and finance position within the organization. The successful candidate will be responsible for the full accounting cycle while working directly with executive leadership to provide financial insight, improve processes, strengthen controls, and support business decisions.
This role goes well beyond traditional bookkeeping or accounting management. We are looking for someone who can own the numbers from transaction-level accounting through executive-level financial reporting, while also identifying opportunities to improve profitability, reduce costs, strengthen cash flow, improve customer billing and collections, and establish sound financial practices.
The ideal candidate is a proactive business partner who does not simply report what happened but understands why it happened, identifies risks and opportunities, and makes practical recommendations for what the business should do next.




Company Background Tri Source International is a global BPO organization providing customer service, sales, back-office, and technology solutions to businesses across multiple industries.
We help our clients simplify outsourcing so they can focus on their core business and growth. Our operations include teams in the United States, Mexico, and Latin America, providing candidates with exposure to a dynamic, multi-entity and international business environment.
Company Culture & Mission TSI is the sales, customer service, and back-office support engine behind many of the brands and businesses we serve. We are selective about the clients we partner with and the teammates we invite to join our organization.
Our culture is built around six core values:
People | Passion | Balance | Transparency | Results | Fun
We believe strong businesses are built by people who take ownership, work collaboratively, communicate openly, and are committed to achieving meaningful results.
Key Responsibilities: Full-Cycle Accounting Own the day-to-day accounting function for multiple companies and entities under the same ownership umbrella.
Maintain accurate general ledgers and financial records for each entity.
Manage the complete accounting cycle, including journal entries, accruals, prepaid expenses, fixed assets, depreciation, and month-end close.
Perform

📌 Senior Accounting Manager / Controller (Valencia)
🏢 Tri Source International
📍 Valencia