How a non-technical founder built a $20K/month AI resume business

Executive overview

Most people have expertise nobody is paying for. Colin McIntosh spent six years giving free resume advice on Reddit — then built an AI version of that advice with a software engineer friend and hit $20K/month in month two.

The business runs on near-100% margins, costs Colin under 10 hours a week, and was launched for free before a single dollar changed hands.

Free distribution of genuine expertise is the most durable moat an AI product can have.

Why now is the right time to build with AI

• OpenAI credits are cheap because they're in user-acquisition mode — this window won't last
• Non-technical founders can train AI on their knowledge without writing code
• The cost of scaling advice from one person to thousands is near zero
• Tools for solopreneurs — chatbots, AI content, affiliate platforms — are at their lowest prices ever

Finding and validating the idea

• Ask: what do I do better than almost anyone else?
• Start helping people for free to prove the problem is real and demand exists
• Don't use AI for the validation phase — do it manually first
• Build a brand identity map before writing any code (Techstars has a free template)
• Write a two-page business plan: differentiation, existing competitors, key value propositions
• Raise prices until you hit resistance — that's your signal to build a scalable version

Getting a technical co-founder without money

• You won't convince a stranger to build your idea for equity alone — nor should you
• The path is relationships built over years: colleagues, people you've helped, communities you've served
• Colin found two technical co-founders from the same Reddit community he'd been helping for six years
• Be the partner you'd want to work with — that's the only reliable recruiting strategy

Launch strategy

• Launched free first — focused purely on usage data and word of mouth
• Embedded a soft launch in existing high-traffic Reddit posts rather than a cold launch
• Word of mouth from genuinely helped users drove early growth
• Turned on pricing after validating usage: $99 lifetime, $29 for one week
• No monthly subscriptions — avoided perceived predatory pricing during job searches
• Crossed $1,000 in revenue within the first week of charging

Scaling user acquisition

• Word of mouth remains the primary growth engine — driven by generous free usage and refunds
• Hired an affiliate marketing agency for passive distribution
• Set up basic Google Ads as a training signal for the algorithm
• Published multiple high-value Reddit posts on adjacent topics (interviewing, salary negotiation) to capture organic search
• Embed product links in genuinely helpful content — never as the primary call to action

Tech stack and operations

• Stack: OpenAI + Gemini, PHP with the Laravel framework, REST API, AWS
• Payments: Stripe; banking: Mercury; email: Gmail
• Colin spends 5–10 hours per week maximum on the business
• ~90% net margins after operating costs