Senior Accountant

Company Description

MainStreet is on a mission to transform every small business owner into an expert backoffice champion. By integrating accounting, HR, and hiring, we give growing companies a single, streamlined solution to manage their people, finances, and operations. The result is more efficiency, better transparency, and less friction—so teams can focus on scaling their business, not managing complexity.

Job Description

Contract to Hire

About the Role

We are a fast-growing tech company with multiple subsidiaries seeking an Accounting Manager/Senior Accountant to own core accounting operations and provide accurate, timely financial insights. This role is ideal for someone who thrives in a dynamic, multi-entity environment, can balance detail with big-picture financial understanding, and wants to grow their career in a high-impact role.

Core Responsibilities

• Prepare and post journal entries for inter-company and subsidiary transactions.
• Manage monthly bank reconciliations across multiple subsidiaries.
• Maintain accurate record keeping and ensure compliance with U.S. GAAP.
• Analyze and interpret P&L statements, balance sheets, and cash flow statements, with an emphasis on understanding their interactions.
• Support pro forma financial analysis for planning, growth initiatives, and M&A integration.
• Partner with leadership to deliver accurate, timely monthly and quarterly closes.
• Assist in establishing and improving accounting processes, systems, and controls.
• Collaborate with cross-functional teams to support strategic initiatives.

Qualifications

Qualifications & Experience

• 2–5 years of accounting experience, preferably in SMB environments or public accounting.
• Strong understanding of U.S. GAAP and financial reporting.
• Demonstrated ability to work with multi-entity/subsidiary structures a plus.
• Strong mathematical, analytical, and problem-solving skills.
• High proficiency in Excel/Google Sheets; experience with accounting systems (e.g., QuickBooks, NetSuite, Xero, or similar) preferred.
• Strong written and verbal communication skills.

Who You Are

• Efficient – able to manage competing priorities and deadlines.
• Adaptable – comfortable operating in a fast-moving, high-change environment.
• Hungry – eager to learn, grow, and take on increasing responsibility.
• Detail-oriented with a strong sense of ownership and accountability.

Additional Information

Why Join Us

Our Core Values

At the heart of everything we do are two values that guide how we work and grow together:

Candor – We believe in open, honest, and respectful communication. Candor helps us solve problems faster, build stronger relationships, and keep our focus on what truly matters. We encourage every team member to speak up, share ideas, and challenge assumptions.

Impact – We measure success not by effort alone, but by the results we create. Whether it’s streamlining accounting processes, producing accurate financial insights, or enabling better decisions, we prioritize work that drives meaningful outcomes for our company, our customers, and our team.