Senior Accountant

OSI Batteries is a factory-direct distributor of specialty batteries, chargers, and related products from top manufacturers in the industry. OSI has stood out from the competition for over 48 years by delivering professional battery solutions to businesses, medical organizations, and government agencies who rely on battery power to get their jobs done.

OSI Batteries team members are deeply committed to transforming mission-critical operations. Our vibrant culture is built upon aligned values, shared ownership, mutual respect, and a passion for collaborating to solve complex customer problems.

The Accounting Coordinator supports daily accounting operations and contributes to accurate financial reporting and strong internal controls. Reporting to the Accounting Manager, you will be responsible for transaction processing, accounts payable and receivable management, general ledger maintenance, and revenue recognition activities. This role is ideal for an early-career accounting professional who is detail-oriented, takes pride in accuracy, and is excited to grow their accounting skills in a fast-growing, mission-driven healthcare technology company.

Transaction Processing & General Ledger

Accurately record financial transactions in the accounting system in accordance with U.S. GAAP, including accounts payable, accounts receivable, and general ledger entries.

Process and post journal entries across multiple accounts with attention to classification, supporting documentation, and audit trail requirements.

Maintain timely and accurate records while ensuring compliance with internal accounting policies and U.S. GAAP standards.

Accounts Payable Operations

Process vendor invoices, verify payment terms, and ensure accuracy of amounts and account coding before payment.

Generate payments while maintaining positive vendor relationships and adhering to payment schedules.

Research and resolve vendor account discrepancies in a timely and professional manner.

Accounts Receivable & Revenue Recognition

Prepare and issue customer invoices accurately and timely, ensuring proper revenue classification and documentation.

Reconcile accounts receivable sub-ledgers and follow up on outstanding payments to ensure collections and aging accuracy.

Research and resolve customer account discrepancies with professionalism and thoroughness.

Close & Compliance Support

Prepare supporting reconciliations to assist in month-end and year-end close activities.

Monitor and maintain compliance with internal policies, accounting standards, and relevant regulations in all daily accounting activities.

Support audit preparation and documentation as requested by the Accounting Manager.

Your Background

2–4 years of work experience in accounting, bookkeeping, or finance with exposure to accounts payable, accounts receivable, or general ledger processes.

Strong knowledge of U.S. GAAP accounting principles, financial statements, and general ledger maintenance.

Excellent attention to detail, organization, and communication skills.

Ability to handle a high volume of transactions accurately while meeting close deadlines.

Strong analytical and problem-solving skills with unquestionable integrity.

Bachelor's degree in Accounting, Finance, or a related field preferred.

Preferred

Healthcare industry experience or familiarity with healthcare billing and revenue recognition.

Experience with NetSuite or a similar accounting system.

Exposure to month-end or year-end close processes.

Basic Excel skills including data entry, pivot tables, and simple formulas.

Act Like an Owner

You take ownership of the accuracy and timeliness of every transaction you record. You don't let discrepancies slide or move forward with reconciliations you don't fully understand.

Accountability & Execution, Results Driven

Serve with Purpose

You understand that accurate financial records are the foundation for every decision PartsSource makes. You bring rigor, care, and attention to your work because you know it matters to the team and our customers.

Clear & Critical Thinking, Active Listening

Adapt to Thrive

You learn new systems, processes, and procedures quickly. You're comfortable asking questions when something doesn't make sense, and you apply feedback constructively to improve your work.

Learning Agility, Resilience

Collaborate to Win

You contribute to a team that depends on each other to close the books accurately and on time. You communicate clearly with the Accounting team and cross-functional partners, supporting colleagues when volume spikes.

Team Orientation, Relationship Management

Challenge the Status Quo

You notice when a process could be more efficient or a control isn't working as intended. You ask questions and bring ideas for improvement with humility and curiosity.

Curiosity & Problem Solving, Continuous Improvement

• Competitive compensation package with salary, incentives, company ownership/equity, and comprehensive benefits (401k match, health, college debt reduction, and more!) 
• Career and professional development through training, coaching and new experiences. 
• Hybrid culture with new & beautiful workspaces that balance flexibility, collaboration, and productivity. 
• Inclusive and diverse community of passionate professionals learning and growing together. 

About OSI Batteries

Since 1972, OSI Batteries has carried only the highest quality products, standing behind every order. Backed by the largest battery manufacturers and a global supply chain network, we provide the highest quality replacement options, competitive pricing, and expert advice. In 2021, OSI Batteries acquired Unipower and became the Master Distributor for all Unipower batteries, products, and accessories.

In 2024, OSI Batteries became a PartsSource company. PartsSource has evolved into the leading technology and software platform for managing mission-critical equipment, serving over half of the U.S. hospital infrastructure.

In 2021, Bain Capital invested in the business, further accelerating our growth and positive impact within the healthcare industry.

Read more about us here:

· PartsSource Named to Newsweek’s List of the Top 200 America’s Most Loved Workplaces for 2024

· PartsSource® Named Among the Top 50 Healthcare Technology Companies of 2025

· PartsSource® Named Among the Top 25 Healthcare Software Companies of 2025

· PartsSource President and CEO Philip Settimi Named to Top 50 Healthcare Technology CEO List 2025

· WSJ: Bain Capital Private Equity Scoops Up PartsSource