CREA.MBAOver-engineering, no measurement, launching without email, stack-hopping… the 7 mistakes that kill a first SaaS and how to avoid them.
Every novice builder makes the same 5-6 mistakes. It's not a talent issue: it's a calibration issue. And most of these mistakes don't surface until you've already burned 2 months building something that doesn't fit reality.
This guide is the list. If you see yourself in one, no shame: that's information.
What it looks like: microservices architecture, Kubernetes, message queues, GraphQL Federation, multi-region, before having a single customer.
Why it happens: you read a Stripe / Netflix / Airbnb blog post and believe you need the same in your 0-user MVP.
The cost: you spend 3 months building infrastructure to scale to millions. You launch late. You have none.
How to avoid it: monolith until your first 1000 users. PostgreSQL as far as it goes (and it goes far). One region. One DB.
What it looks like: app in production, you don't know how many visits, which pages they view, where they bounce in the funnel.
Why it happens: "I'll add analytics later." Or "I don't want to pollute the code."
The cost: flying blind. Iterating on intuition. Roadmap by feeling. Half your decisions would change with 5 data points.
How to avoid it: 30 minutes to wire Plausible/Umami/Clarity. Look at the data every Monday. Even just to see "did anyone visit this weekend?".
What it looks like: 3 weeks polishing the landing, you launch, only your brother notices.
Why it happens: because you believe "good products sell themselves." Or you're embarrassed to send the email.
The cost: dead launch. Worse: you convince yourself "the market didn't want this" when actually no one knew.
How to avoid it: build the list from day 1, before the product. On launch day, email is mandatory. Even if it's 30 people. Even if it feels cringe. It's the most important day.
What it looks like: you start with Next.js, week 4 you hit a frustrating bug, see a tweet saying "Astro is better," abandon Next, start Astro. 3 weeks later, another tweet about SvelteKit.
Why it happens: shiny object syndrome. Any framework looks better than the one you're debugging.
The cost: months lost stack-hopping. Zero real progress.
How to avoid it: simple rule → no stack change until 100 real users. At that point, you'll have data to know whether the friction is the stack or you.
What it looks like: you ship a feature Friday 10pm, "I'll test Monday." Monday the form has a bug, 5 users affected, they've already left.
Why it happens: rush. Fatigue. The romantic "move fast and break things."
The cost: lose trust from the few users you have. It's 10x easier to retain than acquire.
How to avoid it: fixed QA day. In a 5-day sprint, Friday is for testing. Not pushing features.
What it looks like: 6 months building in silence. When you launch, you realize the problem you solve isn't the problem your ICP has.
Why it happens: fear. "I don't want to show it until it's good."
The cost: you build something nobody wants. You find out when there's no going back.
How to avoid it: talk to 10 ICP people before writing a line of code. Then 10 more with the ugly MVP, before polishing.
What it looks like: you add dark mode, custom analytics, a referral system, annual plan with discount, Slack integrations… when no one asked.
Why it happens: you confuse "feature" with "value." Building features feels productive.
The cost: bloated product, complex code, high maintenance, zero value.
How to avoid it: every feature must answer "which customer asked, what problem does it solve?". No clear answer → don't build.
All 7 mistakes share a root: building before validating. Validating is uncomfortable (you talk to people, get "no") and building feels good (you advance, see lines).
But only the first generates value. The second generates code.
If you see yourself in 2-3 of these, you're a normal builder. The bad part isn't making them: it's not learning from them.
The indie hacker who grows is the one who every 30 days reviews this list, finds which one they fell into this month, and adjusts. Not a genius: disciplined.
And if you don't see yourself in any, keep looking. It's probably #6.
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