Senior Accounting Manager / Controller

Job Summary

Tri Source International is a growing global 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 bank, credit card, balance sheet, intercompany, and other account reconciliations.
• Maintain appropriate supporting documentation for all significant accounting transactions.
• Establish and maintain a consistent accounting structure and chart of accounts across entities where appropriate.
• Identify and resolve accounting discrepancies proactively.

Accounts Payable & Vendor Management

• Manage the complete accounts payable process.
• Review vendor invoices for accuracy, appropriate coding, approvals, and supporting documentation.
• Establish appropriate approval and payment controls.
• Monitor vendor costs and identify opportunities to reduce expenses.
• Review recurring expenses, contracts, subscriptions, and service agreements for unnecessary or duplicative costs.
• Maintain strong vendor relationships while ensuring the company receives appropriate pricing and terms.
• Recommend opportunities to renegotiate vendor agreements and improve purchasing practices.

Accounts Receivable, Customer Billing & Collections

• Own the customer invoicing process across multiple businesses and entities.
• Ensure customers are billed accurately, timely, and in accordance with contracts and service agreements.
• Develop and maintain billing procedures and controls.
• Review contracts and pricing structures to ensure all billable services, fees, pass-through expenses, and other charges are captured.
• Partner with Operations and Sales to ensure changes in scope, pricing, headcount, hours, services, and client requirements are reflected accurately in billing.
• Monitor accounts receivable aging and actively manage collections.
• Identify billing leakage, missed revenue, credits, write-offs, and other opportunities to improve cash flow.
• Recommend improvements to customer billing practices, payment terms, and collection procedures.
• Develop reporting to help leadership understand revenue, outstanding receivables, and cash flow.

Financial Reporting & Analysis

• Prepare accurate monthly financial statements for each business/entity.
• Produce monthly management reporting, including profit and loss statements, balance sheets, cash flow reporting, and key financial metrics.
• Provide executive leadership with meaningful financial analysis—not simply financial statements.
• Explain significant variances and identify trends, risks, and opportunities.
• Develop budgets, forecasts, and cash flow projections.
• Assist leadership with financial planning and business decisions.
• Provide financial modeling and analysis for new clients, contracts, business opportunities, and major expenditures.
• Identify opportunities to improve margins and profitability.

Multi-Entity & International Accounting

• Manage accounting activities across multiple related entities.
• Maintain accurate intercompany transactions and reconciliations.
• Support multi-currency accounting and international operations.
• Ensure transactions are properly allocated between entities and business units.
• Develop consistent accounting and reporting practices across the organization.
• Work with external accounting, tax, payroll, banking, and financial professionals as needed.

Cost Control & Business Improvement

A major component of this role is helping the company save money and operate more efficiently.

• Analyze operating expenses and identify unnecessary or excessive spending.
• Review vendor relationships and recommend cost-saving opportunities.
• Identify process inefficiencies and recommend automation or workflow improvements.
• Analyze gross margins and operating costs by business, client, program, or service where appropriate.
• Identify revenue leakage and missed billing opportunities.
• Review financial processes and recommend best practices.
• Establish financial controls that reduce errors, waste, fraud, and unnecessary expenses.
• Help leadership understand the financial impact of operational decisions.
• Continuously look for ways to improve profitability, cash flow, and financial visibility.

Internal Controls & Best Practices

• Establish and maintain appropriate accounting policies and procedures.
• Develop appropriate segregation of duties and approval controls as the organization grows.
• Establish standardized processes for AP, AR, billing, reconciliations, expenses, and financial reporting.
• Maintain organized financial records and documentation.
• Identify weaknesses in current processes and recommend improvements.
• Help establish scalable accounting systems and procedures that can support continued company growth.
• Ensure financial information is accurate, timely, and reliable.

Tax, Audit & Compliance

• Coordinate with external CPAs, tax professionals, auditors, and other advisors.
• Prepare schedules and supporting documentation required for tax filings and audits.
• Ensure accounting records are maintained in accordance with GAAP and applicable regulatory requirements.
• Assist with federal, state, local, and international accounting and reporting requirements as applicable.
• Monitor changes in accounting requirements and recommend necessary changes to company practices.

Executive Partnership

• Serve as the primary accounting and financial resource for executive leadership.
• Provide leadership with clear, practical financial recommendations.
• Translate financial information into actionable business insights.
• Bring concerns to leadership proactively rather than waiting for issues to become problems.
• Help leadership evaluate the financial impact of operational and strategic decisions.
• Be comfortable challenging assumptions and asking questions when the numbers do not make sense.

Required

• Bachelor's degree in Accounting, Finance, or a related field.
• 7+ years of progressive accounting experience.
• Experience managing the full accounting cycle.
• Experience with month-end and year-end close.
• Strong knowledge of GAAP.
• Experience with accounts payable, accounts receivable, general ledger, reconciliations, and financial reporting.
• Experience managing customer billing and collections.
• Strong Excel skills, including formulas, pivot tables, and financial analysis.
• Experience working with multiple entities, business units, or companies.
• Ability to work independently and take complete ownership of the accounting function.
• Strong analytical and problem-solving skills.
• Excellent attention to detail while maintaining the ability to understand the larger business picture.
• Ability to communicate financial information clearly to non-financial leaders.
• Comfortable working onsite in Valencia, CA.

Preferred

• Previous Controller, Assistant Controller, Accounting Manager, or Senior Accounting Manager experience.
• CPA, CMA, or other relevant professional certification.
• Experience in a BPO, call center, professional services, technology, or multi-location business.
• Experience with multi-entity and intercompany accounting.
• Experience with international operations and multi-currency accounting.
• Experience with customer contract billing and revenue recognition.
• Experience with budgeting, forecasting, and cash flow management.
• Experience identifying cost savings and improving profitability.
• Experience implementing or improving accounting systems and processes.
• Experience working directly with company owners or executive leadership.
• Payroll accounting experience.
• Experience coordinating with external CPA/tax firms.

Why You’ll Love Working Here

• High-impact role with significant autonomy.
• Direct visibility with executive leadership.
• Opportunity to build and improve the accounting function.
• Exposure to multiple businesses and industries.
• Growing global organization.
• Collaborative and supportive work environment.
• Opportunity to make a measurable impact on profitability and business operations.
• Competitive compensation and benefits.

Job Type: Full-time

• 401(k) matching
• Dental insurance
• Health insurance
• Life insurance
• Paid time off
• Vision insurance

Work Location: In person