Senior Accountant – Accounting & Financial Reporting

Greater Boston Woburn, MA

Full Time

Posted June 10, 2026

$120k - $130k

Application opens on company website

Source: Greenhouse View original listing
Freshness: Open in the current public read path; this is not an employer guarantee.Last observed November 5, 2026
Classification: Modern power-system classification not yet published for this listing.Legacy source industry field: Energy Storage
Pay provenance: Employer-provided pay

SES is seeking a motivated Senior Accountant – Accounting and Financial Reporting to join our growing Finance Team in Woburn, MA.

Prepare and maintain accurate financial records in accordance with U.S. GAAP, internal controls, and company policies.
Participate in the monthly, quarterly, and annual financial close processes, including preparation of journal entries, account reconciliations, and supporting schedules.
Assist with the preparation of monthly and quarterly financial reporting packages, including variance analysis and management reporting.
Support the quarterly and annual external audit process by preparing audit schedules and responding to auditor requests.
Assist with accounting and reporting for multiple domestic and international entities, including consolidation activities and intercompany transactions.
Prepare and review balance sheet reconciliations and investigate unusual variances or reconciling items.
Support the implementation and maintenance of accounting policies, procedures, and internal controls.
Assist in researching and documenting technical accounting issues and new accounting standards under U.S. GAAP.
Support ERP system enhancements and process improvement initiatives.
Assist with accounts payable, payroll, tax, and other accounting-related processes as needed.
Collaborate with FP&A, Operations, Treasury, International Finance, and other cross-functional teams to support business objectives.
Identify accounting issues and work with management to ensure appropriate accounting treatment and disclosure.

• Bachelor's degree in Accounting or related field. • Minimum of 4–6 years of relevant accounting experience. • Strong understanding of U.S. GAAP and financial reporting requirements. • Experience with month-end close, account reconciliations, and financial statement preparation. • Working knowledge of equity and inventory accounting. • Experience working with multinational companies preferred. • Knowledge of external reporting systems such as Wdesk and/or Active Disclosure is a plus. • Excellent written and verbal communication skills. • Strong analytical and problem-solving skills with attention to detail. • Strong interpersonal skills and ability to work effectively in a collaborative team environment. • Excellent organizational and time-management skills with the ability to manage multiple priorities and deadlines. • Big Four / Big 6 public accounting experience required. • Certified Public Accountant (CPA) required. • Experience with internal controls over financial reporting. • Demonstrated initiative, accountability, and ownership of assigned responsibilities. • Comfortable working in a fast-paced, dynamic environment. • Proficiency in researching and applying accounting guidance to business transactions. • Ability to identify potential accounting and reporting implications and communicate findings effectively.
The salary range for this position as required under applicable pay transparency laws.
Salary Range
$120,000
—
$130,000 USD

A highly competitive salary and robust benefits package, including comprehensive health coverage and an attractive equity/stock options program within our NYSE-listed company.
The opportunity to contribute directly to a meaningful scientific project—accelerating the global energy transition—with a clear and broad public impact.
Work in a dynamic, collaborative, and innovative environment at the intersection of AI and material science, driving the next generation of battery technology.
Significant opportunities for professional growth and career development as you work alongside leading experts in AI, R&D, and engineering.
Access to state-of-the-art facilities and proprietary technologies are used to discover and deploy AI-enhanced battery solutions.