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The Series A Finance Team Blueprint: Building for Tomorrow, Not Yesterday

SG

Seth Girsky

February 03, 2026

## The Series A Finance Team Blueprint: Building for Tomorrow, Not Yesterday

You just closed your Series A. Congratulations.

Now comes the part that keeps founders up at night: building the financial operations team that won't collapse when you 10x headcount over the next 18 months.

We see the same pattern repeatedly with our Series A clients: founders delay hiring their first dedicated finance person, then panic when their spreadsheet-based accounting can't track accounts payable, revenue recognition is a guessing game, and cash flow visibility becomes a monthly surprise. By then, you're already behind.

The critical insight most founders miss is this: **your finance team structure isn't determined by your current company size—it's determined by your trajectory and your operational complexity.** A $2M ARR company operating a simple product-market fit model has different finance needs than a $2M ARR company with multiple product lines, geographic expansion, and venture debt.

This playbook shows you how to build the right finance function for Series A, when to hire, what roles matter most, and the structural mistakes that derail founders.

## Understanding the Series A Finance Operations Reality

Let's be honest about where you are: Series A represents a fundamental shift in operational rigor. Pre-Series A, you could get away with a founder managing finances part-time. Post-Series A, investors expect quarterly reporting, audit-ready books, compliance infrastructure, and forward-looking financial planning.

Most importantly, you need someone who isn't you.

The gap between founder-managed finance and professional financial operations is enormous. When the CEO is managing accounts payable, expense categorization, and revenue forecasting, something critical always gets neglected. Usually it's the forward-looking piece—financial planning that actually drives operational decisions.

In our work with Series A startups, we've found that companies underestimate the operational lift required to scale finance. You're not just moving from a spreadsheet to accounting software (though you should). You're building the financial infrastructure that enables:

- **Accurate quarterly reporting** to investors and auditors
- **Real-time visibility** into cash position, burn rate, and runway
- **Scalable revenue recognition** as your business model becomes more complex
- **Compliance framework** for growing regulatory requirements
- **Planning and forecasting** that actually informs strategy

The founder's job postSeries A isn't to do finance better. It's to know what's happening and make decisions based on accurate financial information.

## The Sequencing: What Your First Finance Hire Actually Looks Like

Here's where most founders go wrong: they recruit for the job they needed six months ago, not the job they need now.

The typical Series A company has just raised $3-5M. You're probably 15-30 people. You have a bookkeeper who's been doing your taxes and basic accounting, but no one owns the financial operations layer.

Your first dedicated hire post-Series A should almost never be a Controller. It should be a **Finance Operations Manager or Senior Finance Analyst with operational bias.** This person's charter is:

- Establish clean accounting processes that scale
- Build financial reporting that actually informs decision-making
- Create the operational infrastructure for future team growth
- Serve as the bridge between accounting (historical) and planning (forward-looking)

We tell founders: if you're hiring a Controller as your first financial operations hire, you're optimizing for historical accuracy when you should be optimizing for operational clarity and forward-looking visibility.

The Finance Operations Manager role is different from a traditional accounting role. This person cares about:

- **Process design** – How do we systematize the recurring financial tasks?
- **Systems integration** – How do we make sure data flows cleanly from operations to accounting to planning?
- **Visibility and reporting** – How do we make it easy for the CEO to understand what's happening financially?
- **Compliance readiness** – How do we build infrastructure that survives audit and investor scrutiny?

They're not necessarily a certified accountant. They're a systems thinker who understands operations.

### The Skill Profile That Actually Works

When you're recruiting, look for:

- **2-4 years in startup finance ops** (not corporate accounting)
- **Systems thinking** – they ask about process and integration, not just reconciliation
- **Technical capability** – comfortable with accounting software, data integration, and analytics tools
- **Low ego about operational work** – understands that documenting procedures and standardizing processes is strategic work
- **Ability to communicate to non-finance stakeholders** – translates complexity into insights

Skip candidates who are exclusively accounting-trained or who've spent their career in corporate finance. They'll optimize for compliance and controls when you need them optimizing for clarity and scalability.

## The Operational Gaps That Create Your First Hires' Agenda

When you hire your first operations-focused finance person, what should their first 90 days actually accomplish?

We structure this around **four critical operational imperatives:**

### 1. Revenue Recognition and Billing Integrity

Most Series A companies realize mid-audit that their revenue recognition is a mess. Contracts with different billing terms, variable pricing, multi-year commitments—they compound quickly.

Your finance ops person's first priority: audit your revenue process. What's actually being recorded, when, and why? Is it matching your contracts? Do you have a documented process for handling non-standard deals?

This isn't busy work. This is the difference between an audit that takes two weeks and an audit that derails your Q4.

### 2. Cash Flow and Liquidity Visibility

Read [Burn Rate and Runway: The Allocation Strategy Most Founders Never Calculate](/blog/burn-rate-and-runway-the-allocation-strategy-most-founders-never-calculate/) for deeper insight here, but the operational reality is this: most founders don't actually know their cash position.

They know what the bank balance was yesterday. They don't know the committed payables for the next 60 days, the revenue that's reasonably expected to land, or the working capital swings in their business cycle.

Your finance ops person needs to own the **cash flow forecast** – a rolling 12-month projection of when money actually leaves and enters the bank account. This drives everything from hiring decisions to vendor negotiations.

Check out [Cash Flow Automation: The Hidden Multiplier Most Startups Ignore](/blog/cash-flow-automation-the-hidden-multiplier-most-startups-ignore/) for how to systemize this.

### 3. Accounting Close Process and Reporting

Pre-Series A, your accounting close might have been chaos. Books closed whenever they closed. Adjustments made ad hoc. Reporting was whatever the founder needed to cobble together.

Post-Series A, you need a **documented monthly close process** that reliably produces accurate financials within 5-7 business days of month-end. This becomes non-negotiable when you're reporting to investors quarterly and preparing for audit.

Your finance ops person should establish:

- Standardized close calendar with clear ownership
- Documented reconciliation procedures for every balance sheet account
- Monthly review process that catches errors before reporting
- Clean audit trail and supporting documentation

### 4. Financial Planning Infrastructure

This is where most operations hires fail because they're not used to this work. But post-Series A, your finance operations person needs to own **the financial model.**

Read [The Financial Model Architecture Problem: Building Models That Scale With Your Business](/blog/the-financial-model-architecture-problem-building-models-that-scale-with-your-business/) for depth here. The key insight: your model shouldn't be a one-off planning document. It should be a living operational tool that connects strategy to cash.

Your finance ops person designs this model—usually in Excel initially, though it may evolve to specialized tools. This model should:

- Connect operating metrics (customer count, usage, churn) to revenue
- Translate revenue into costs and headcount implications
- Show cash impact of strategic decisions
- Update monthly with actual results to show variance

## When to Hire Your Second Financial Person

As a founder, you should watch for these signals that you need additional finance support:

**You need a dedicated accountant/bookkeeper when:**
- Transaction volume exceeds 200+ per month
- Your operations person spends more than 20% of time on transaction entry and reconciliation
- You're managing multiple entities or entities in multiple jurisdictions
- Your accounting software isn't directly integrated with your operating systems (Stripe, billing platform, etc.)

**You need a dedicated finance analyst when:**
- The CEO is regularly making decisions with incomplete or stale financial information
- You're spending >4 hours per week manually pulling reports or analyzing data
- Your product has multiple business lines with different unit economics that aren't being tracked separately
- [SaaS Unit Economics: The Unit Contribution Margin Blind Spot](/blog/saas-unit-economics-the-unit-contribution-margin-blind-spot/) keeps you awake at night

**You need a Controller when:**
- You're doing multiple audits (lender audit, investor audit, compliance audit)
- Your organization is large enough that close process, reconciliation, and audit management exceeds one person's capacity
- You're managing financial relationships with multiple external stakeholders
- You're planning M&A or other corporate restructuring

Most Series A companies don't need a Controller yet. They need operational finance excellence first.

## The Organizational Structure That Actually Works

Here's the simplified structure we recommend for post-Series A companies:

```
CEO
├── Finance Operations Manager/Director
│ └── Bookkeeper/Accountant (part-time or fractional initially)
│ └── Finance Analyst (added as complexity increases)
├── Fractional CFO or External CFO Advisory
```

Key points:

- **Fractional CFO engagement** is most relevant immediately post-Series A. You need external financial leadership for planning, investor relations, and audit management, but you don't need a full-time CFO yet. Read [Fractional CFO Misconceptions: What Founders Get Wrong About Part-Time Finance Leadership](/blog/fractional-cfo-misconceptions-what-founders-get-wrong-about-part-time-finance-leadership/) for the reality here.

- **Your finance operations person reports to the CEO**, not to external finance leadership. They're part of your operational leadership team. Finance strategy flows from external advisors; finance execution is internal.

- **Bookkeeping can be fractional or offshore** initially. You're not leaving it to an external firm; you own the process. But the tactical data entry work doesn't require expensive local talent.

## Common Mistakes in Series A Finance Team Building

We consistently see founders make these errors:

### Mistake #1: Hiring for Yesterday's Problem

Founders often recruit based on what broke last quarter, not what will break next quarter. You need someone who can build infrastructure for scale, not someone who can manage your current complexity.

### Mistake #2: Assuming Your Bookkeeper Scales

Many founders have great bookkeepers who've been with them since the beginning. A bookkeeper is transaction-focused. Post-Series A, you need someone operations and process-focused. These are different skill sets.

### Mistake #3: Delaying the Hire Until You "Need" Someone

By the time you desperately need finance operations support, you're already months behind in building infrastructure. Your hiring timeline should be tied to your raise, not to your pain level.

### Mistake #4: Skipping the Fractional CFO Phase

Founders often either hire someone too junior to drive financial strategy, or they hire a full-time CFO when they don't need 40 hours per week yet. Fractional CFO engagement during Series A is actually the optimal structure. You get external strategic guidance without carrying fixed overhead.

### Mistake #5: Not Clarifying Finance vs. Operations

There's often confusion about what "finance" means. Historical accounting (what happened) is different from financial operations (how do we systematize it) is different from financial strategy (where should we go). Your first hire is operations-focused. Strategy comes from external advisors or leadership as the company grows.

## Building Your Finance Operations Playbook

Once you've hired your operations person, their first tangible output should be **a documented finance operations playbook** that covers:

- **Monthly accounting close process** – exact sequence, ownership, timeline
- **Cash flow forecasting methodology** – how you predict cash 12 months forward
- **Revenue recognition policies** – how you record revenue by contract type
- **Financial reporting calendar** – when investor updates, tax filings, and internal reporting happen
- **Systems documentation** – how data flows from operating systems into accounting and then into planning
- **Reconciliation procedures** – standardized approach for every balance sheet account
- **Error handling and audit trail** – how you document and track corrections

This playbook should be boring. It should be reproducible. A new person should be able to follow it without interpretation.

This playbook is also how you survive the next hire. It's how operational knowledge doesn't live in one person's head. It's how you scale.

## The Financial Operations Self-Assessment

Before you go hire someone, assess your current state:

- Can you close your books accurately within 5 business days of month-end?
- Do you have documented procedures for every recurring financial task?
- Can you forecast your cash position 90 days forward with 80%+ accuracy?
- Does your revenue recognition match your actual contracts?
- Can you articulate your unit economics by customer segment or product line?
- Do you have a monthly financial review process with your leadership team that drives decisions?

If you answered "no" to more than two of these, you're ready for your Series A finance operations hire.

## Moving Forward

Building financial operations is unsexy work. It's documenting procedures and cleaning up spreadsheets and reconciling accounts instead of closing deals and building product.

But it's also the difference between a company that can scale with confidence and a company that makes critical decisions with incomplete information.

The Series A stage is your last opportunity to build this infrastructure before hypergrowth makes it exponentially harder. Your investor is already expecting it. Your auditor will require it. Your team will need it to trust the numbers.

The question isn't whether you need to build financial operations. The question is whether you'll do it proactively, with intention, or reactively, under crisis.

We help Series A founders build exactly this infrastructure. If you want to discuss your specific finance team needs or assess where you stand operationally, [reach out for a free financial operations audit](/). We'll give you a clear assessment of what's working, what's not, and the specific hiring and process changes that matter most for your situation.

Topics:

Startup Finance Scaling Finance Finance Operations Series A Finance Finance Team Structure
SG

About Seth Girsky

Seth is the founder of Inflection CFO, providing fractional CFO services to growing companies. With experience at Deutsche Bank, Citigroup, and as a founder himself, he brings Wall Street rigor and founder empathy to every engagement.

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