Jun 23, 2022 · 25m · top-founders
18 year old raises $32m to build opensource version of Calendly
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gold bands on the timeline = statements, start to end. Hover to read, click to jump. CC turns on captions
In this interview with Nathan Latka, 18-year-old Cal.com co-founder Bailey Pumfleet discusses building an open-source scheduling infrastructure platform, securing $32.4 million in venture capital, and executing a radically transparent open-startup business model.
How this conversation actually went
Every chapter scored 0–10 on four independent dynamics. Hover any point for the reasoning behind the score. Nathan holds 26.6% of the talking time here. How this is scored →
Nathan as informed peer 4.6 Guest teaching 2.6 Guest disagreement 1.2 Nathan pushing back 2.8
speaking balance: gold is Nathan, purple is the guest (3 minute bins)
Sharpest disagreement ▶ 21:40 Defending high revenue multiple
Bailey rejects the framing that their low MRR relative to a high valuation is a concern, arguing Cal.com is building long-term infrastructure like Stripe.
Hardest push from Nathan ▶ 20:45 Nathan presses on valuation mathNathan refuses to accept Bailey's non-disclosure evasion on valuation, citing Cal.com's public cap table data to calculate the numbers on air.
Biggest teaching moment ▶ 15:55 Global salary parity philosophyBailey details how their non-negotiable global pay bands create radical equality by paying overseas engineers massive multiples over local market averages.
Nathan holds their own ▶ 21:05 Calculating implied multiple from open cap tableNathan demonstrates financial expertise by multiplying Series A metrics to pinpoint an estimated $150M pre-money valuation and an 830x MRR multiple.
the scores for every segment, with the reasoning behind each
| Chapter | Topic | Nathan as informed peer | Guest teaching | Guest disagreement | Nathan pushing back | Why |
|---|---|---|---|---|---|---|
| Acquiring Cal.com Domain and Securing Venture Capital | 4 | 2 | 1 | 2 | Nathan inquires about the cost of the premium Cal.com domain and funding rounds, which Bailey answers openly subject to NDA limits. | |
| Defining Cal.com as Extensible Scheduling Infrastructure | 3 | 3 | 1 | 1 | Bailey explains Cal.com's differentiation as customizable scheduling infrastructure rather than just another consumer booking tool. | |
| Contractor-to-Hire Arrangement and Recruitment Philosophy | 3 | 2 | 0 | 1 | Bailey shares how he was hired as a contractor for $5,000 before becoming an equal co-founder, detailing their trial-to-hire approach. | |
| Product Hunt Launch and Early Commercialization Strategy | 5 | 3 | 2 | 4 | Nathan questions whether launching on Product Hunt with only a paid option was a mistake, but Bailey explains their open-source commercial model. | |
| Pricing Structure and Consumer vs Enterprise Segmentation | 5 | 2 | 1 | 3 | Nathan tries to calculate monthly revenue based on conversion rates, prompting Bailey to open up Cal.com's public metrics page. | |
| Radical Salary Transparency and Global Equal Pay Bands | 4 | 4 | 1 | 2 | Nathan explores Cal.com's public salary board, while Bailey explains their flat global compensation bands that pay equal rates regardless of geography. | |
| Release Cadence, Series A Announcement, and Monthly Burn | 6 | 3 | 2 | 5 | Nathan presses for actual MRR figures after seeing burn rate graphs, leading Bailey to reveal their current $15k-$20k MRR and enterprise focus. | |
| Evaluating Capitalization and Becoming the Stripe for Time | 7 | 3 | 2 | 6 | Nathan calculates an estimated $150M valuation from public cap table percentages and challenges the 830x revenue multiple, which Bailey defends as infrastructure investing. | |
| Fast Five: Personal Habits, Tooling, and Advice to 15-Year-Old Self | 4 | 1 | 1 | 1 | Nathan runs through the Fast Five questions covering books, sleep, and advice to Bailey's 15-year-old self before wrapping up the episode. |
Statements from this episode (17)
Bailey Pumfleet: Cal.com raised a $7.4M seed round in 2021
“Earlier that year I think around sort of July time we raised a 7.4 million series, not series A seed round, which, you know, really got us started pretty well.”
Pumfleet: Scheduling is core web infrastructure like email
“Scheduling is like email. It's one of those core foundational things that runs businesses, runs the web and the point is, is that means that people from time to time have like complex use cases and things like that, like telehealth or hiring marketplaces, or, …”
Pumfleet: Calendly does not scale well for embedded marketplace platforms
“Calendly and Savvy Health just don't really sort of fit all of their requirements. I mean, they're good products. Like if I just want to book one-to-one sales calls with me, you know, just a basic Zoom set up. That's great. But the point is, is, you know, if y…”
Pumfleet wrote first Cal.com code in February 2021 while working 9-to-5
“I think I wrote the first line of coding like February. It was so like, I still had a nine to five job. ... 20, 21.”
Pumfleet: Peer Richelsen paid him $5,000 for initial two-week Cal.com trial
“So it was five, it was 5000 dollars.”
Cal.com tests all new hires as contractors before offering full employment
“And we sort of now do that with our employees. We might touch on that a bit more later, but the idea is, is we don't just hire people off the bat. We work with them as contractors, then actually move into you know, a proper arrangement with them.”
Pumfleet: Cal.com waitlist reached thousands before public launch announcement
“We launched it on Product Hunt because like already there were people piling up with, you know, like the wait list for this grew to like, I think it grew to like thousands before we'd even shared that we're actually building it.”
Pumfleet: Cal.com gained up to 50 paying customers on launch day
“Literally, I think we got about, it would have been like maybe up to 50 paying customers in the first day. I don't know exactly.”
Cal.com has between 25,000 and 30,000 total registered users
“I don't know the number of paying customers off the top of my head, but I know we've got about 25 to 30,000 users as of right now.”
Pumfleet: Cal.com Converts Roughly 10% of Users to Paid Accounts
“I believe paid conversion is somewhere around the 10% mark, which tends to be in line with, you know, general SaaS companies, because obviously half of these free accounts, you know, people sign up for it and forgot it, or they were spam or something like that…”
Cal.com operates as an open startup with publicly accessible employee salaries
“Yes, we are an entirely open startup. So literally like my salary is, is publicly available.”
Cal.com pays identical engineering salaries globally regardless of an employee location
“In, in engineering, which is like nine percent of our team, we have three pay bands and that's it. We got, I see one, two, and three, like junior, mid and senior. It doesn't matter where the hell you are in the world. It doesn't matter what, like you don't, Ne…”
Cal.com releases a new version of its product on the 15th monthly
“Every, every 15th of the month, you know, marking from the anniversary of, you know, when we when we actually, you know, first released it on product hunt we launched a new version”
Cal.com keeps its regular monthly burn rate under $100,000
“Generally, like, without one-off expenses, we're generally looking at, I think, about 60, 70 K between the team, you know, add on maybe some stuff from the law firm and bits like that. We're looking at under a hundred K generally.”