Join a Company Where Your Work Makes a Difference

At ISN, we believe our people are the driving force behind our success. For more than 45 years, we've partnered with over 150 federal agencies to deliver innovative, mission-critical solutions that strengthen government mission and serve the public.

Recognized over 25 times by the Washington Business Journal as one of the 50 Fastest Growing Government Contractors and by the Inc. 5000 as one of the Fastest Growing Private Companies, ISN continues to grow through exceptional service, innovation, and a commitment to excellence. We have earned more than 100 commendation letters from our customers recognizing our commitment to exceptional quality, timely delivery, and unwavering integrity. We take pride in our role as a trusted government partner, delivering innovative solutions that benefit society, strengthen national security, and support mission-critical operations.

At ISN, you'll find more than a job—you'll find an opportunity to build your career, collaborate with talented professionals, and make a meaningful impact supporting important federal missions. We foster a collaborative, inclusive culture where employees are encouraged to learn, grow, share ideas, and contribute to innovative solutions for our customers.

Whether you're just beginning your career or bringing years of experience, you'll join a team that values integrity, accountability, teamwork, and continuous improvement. If you're passionate about making a difference and delivering exceptional results, we'd love to have you on our team.

Why You'll Love Working at ISN

We believe great employees deserve great support. Our comprehensive benefits package includes:

• Comprehensive Medical Coverage with Prescription Benefits
• Dental Insurance
• Flexible Spending Accounts (FSA)
• Company-Paid Short-Term & Long-Term Disability
• Company-Paid Basic Life Insurance
• 401(k) Retirement Plan
• Paid Time Off beginning on your first day of employment
• Professional growth and leadership development opportunities

Senior Accountant (Costpoint, Payroll Reconciliation & General Ledger)

We are seeking an experienced Senior Accountant with strong knowledge of Deltek Costpoint, payroll reconciliation, general ledger accounting, and ADP payroll systems. The ideal candidate will be responsible for maintaining accurate financial records, performing account reconciliations, supporting month-end and year-end close activities, and ensuring compliance with company policies and government contracting requirements. This position reports to our Bethesda, Maryland office at least 3 days a week.

Key Responsibilities

• Maintain and reconcile general ledger accounts.
• Prepare and post journal entries accurately and timely.
• Perform monthly, quarterly, and annual account reconciliations.
• Assist with month-end and year-end close processes.
• Prepare financial reports and supporting schedules for management review.
• Research and resolve accounting discrepancies and variances.

Payroll Reconciliation

• Reconcile payroll transactions between ADP payroll system and General Ledger.
• Review payroll registers for accuracy and completeness.
• Reconcile payroll taxes, deductions, benefits, and garnishments.
• Investigate and resolve payroll-related discrepancies.
• Support payroll audits and compliance reporting.
• Prepare payroll accruals and related journal entries.

Costpoint Administration & Accounting

• Utilize Deltek Costpoint for accounting, project setup, and financial reporting.
• Ensure proper project cost allocation and labor charging.
• Reconcile labor distribution and project accounting data.
• Support indirect rate calculations and government contract reporting.
• Assist with incurred cost submissions and DCAA compliance requirements.
• Maintain accounting system integrity and data accuracy within Costpoint.

Audit & Compliance

• Support internal and external audits.
• Prepare audit schedules and supporting documentation.
• Ensure compliance with GAAP, company policies, and federal contracting regulations.
• Assist with implementation and maintenance of internal controls.

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