Hi, I’m Ryan. I build finance that holds up.
Ten years in finance and analytics, from Big4 Advisory to the SaaS reporting that boards, investors and buyers read. Prinsee is what I wished every growing software company had.
“Most growing SaaS companies don’t need a $300K CFO. They need their numbers in one place, agreeing with each other, and someone senior to tell them what the numbers mean.”
I’m Ryan Erwin. I started in finance effectiveness in Big4 Advisory, then spent four and a half years leading client delivery for a SaaS analytics firm, building the reporting that boards, investors and buyers actually read.
I run Prinsee on the same workflows I install for clients. That’s how one person can work like a team, and why I’m in your Slack answering questions instead of sending a report and disappearing until next month.
The short version
I started my career in Big4 Advisory, in Finance Effectiveness, helping large finance teams close faster and report with more confidence. Over five years I moved from associate to manager and learned what good finance looks like at scale: definitions written down, numbers checked before anyone sees them, and reporting built around the decision in front of you.
In 2021 I joined a SaaS analytics firm as Senior Manager of Client Delivery. For four and a half years I built the reporting SaaS boards, investors and acquirers actually read: ARR bridges, cohort retention, unit economics, and the checks underneath them. I saw the same problems at company after company. Three systems with three customer counts. Churn that wasn’t churn. A cash jump everyone celebrated that was really next year’s revenue arriving early.
I founded Prinsee in 2025 to fix those problems properly, in a way that wasn’t possible five years ago. Software handles the syncing, checking and first drafts: custom Claude skills and automated pipelines I built and run every day. That frees me for the part that still needs a person: being in the work with you, telling you the truth about the numbers, and helping you decide what to do next.
Clients kept asking me the same thing: can I just ask my numbers a question? So I built Perch, one place that holds the finance, the customers and the conversations, and answers with its sources. My specialty is customer metrics and finance. The goal is bigger: your whole business, in one place you can ask.
I’m based in Decatur, just outside Atlanta, and work with SaaS companies across the US.
Why an owl
The owl has been the Prinsee mark from day one. Owls see clearly in the dark, which is where most founders are with their numbers: making real decisions in partial light. The glasses and the book are the work itself, reading carefully and checking the details, then looking up to tell you what it means. Our client platform, Perch, is named for where an owl does its best work: up high, with the whole field in view.
Six things you can hold us to.
Every number has receipts.
Anything in your package or in Perch traces back to the transactions and records behind it.
In the trenches, not on a pedestal.
Software does the overnight work. I’m in your Slack for the rest: the follow-ups, the judgment calls, the board prep.
Plain English.
You get what changed, why it changed, and what to do about it. No jargon to decode.
Published pricing.
You should know what this costs before you book a call. It is on the pricing page.
You keep what we build.
Workflows, definitions and models stay with you, whether we work together for a year or ten.
Honest about fit.
If you need a bookkeeper or a CPA instead of a CFO, we will say so and point you to one.
Tools I work in every day.
Comfortable in your stack, whatever it is. These are the ones that come up most.
SalesforceBigQuery
ExcelGoogle SheetsClaudedbtPower BIPythonLet’s talk about your numbers.
Thirty minutes, no pitch deck. Bring a board deck or your messiest spreadsheet and I’ll show you what I’d fix first.