Senior Accountant

Mercury is growing quickly, and with that growth comes increasing complexity. New products, higher transaction volumes, evolving systems, and a growing customer base all create opportunities to build a stronger, more scalable finance organization.

We’re looking for a Senior Accountant who enjoys more than just closing the books. Someone who is energized by building better processes, improving controls, leveraging technology, and helping create the accounting infrastructure that allows Mercury to scale.

Reporting to the Accounting Manager, you’ll join a lean, high‑performing accounting team and play a key role in improving close timelines, strengthening operational rigor, supporting audits, and driving automation across the accounting function. This role is ideal for someone who enjoys building scalable processes and finding better ways of working, not just executing existing ones.

• Own key areas of the month‑end, quarter‑end, and year‑end close process, ensuring accurate and timely financial reporting.
• Prepare and review journal entries, account reconciliations, and supporting schedules across multiple accounting areas.
• Perform monthly flux and variance analysis, identifying key drivers of financial results and explaining period‑over‑period changes.
• Manage and improve accounting processes across the general ledger, including revenue, accounts receivable, accruals, intercompany transactions, and other key accounting areas.
• Partner cross‑functionally with teams across Finance, Partnerships, Legal, and Product to ensure accurate accounting treatment and efficient workflows.
• Identify opportunities to automate manual processes and improve accounting operations through technology, AI‑enabled tools, and system enhancements.
• Help design and implement scalable accounting processes, controls, and documentation as Mercury continues to grow.
• Strengthen and maintain internal controls that support accurate financial reporting and operational excellence.
• Support external audits and assist with audit requests, schedules, and supporting documentation.
• Take ownership of problems from identification through implementation, driving improvements that make the team more efficient and effective.

• 4+ years of progressive accounting experience.
• BA/BS or equivalent in accounting or related field.
• Experience in public accounting, industry accounting, or a combination of both.
• Strong GAAP accounting fundamentals and a solid understanding of financial statement impacts.
• Highly detail‑oriented with a track record of producing accurate, high‑quality work.
• A self‑starter who can independently research issues, form thoughtful recommendations, and exercise sound judgment.
• Demonstrated ability to improve processes through automation, technology, systems enhancements, or workflow optimization.
• Strong analytical skills with the ability to work through large volumes of financial data, identify anomalies, strengthen controls, and support decision‑making.
• Comfortable operating in a fast‑paced, evolving environment where processes are being built, refined, and scaled.
• Clear communicator who collaborates effectively across teams.

• Certified Public Accountant (CPA).
• Experience with Net Suite or similar ERP systems.
• Experience in fintech, banking, payments, financial services, or other highly regulated industries.
• Experience in a startup or high‑growth technology company.
• Experience supporting external audits.
• Exposure to AI‑driven process improvement initiatives or accounting workflow optimization projects.

Within your first year, you’ll:

• Become a trusted owner of key close processes and accounting areas.
• Help reduce manual work through automation, process improvements, and scalable systems.
• Contribute to a faster, more efficient close while maintaining a high standard of accuracy and control.
• Strengthen documentation, internal controls, and operational rigor across the accounting function.
• Improve the scalability of accounting processes as Mercury continues to grow.
• Be recognized as a go‑to partner who identifies problems, proposes solutions, and drives execution.

The total…