Sergio Pereira

@SergioRocks

CTO building tech products, startup teams & writing about it. I work as a Fractional CTO for tech startups. DMs open

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sergiopereira.substack.com

Joined June 2014

1,466 Following

45.5K Followers

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Sergio Pereira
@SergioRocks
Jun 9
If I were a non-technical founder starting a startup today, I would not hire engineers on day one. I would first use AI tools to: - explore the market - define the ICP - map the customer workflow - generate positioning - build a clickable prototype - put it in front of potential
sergiopereira.substack.com
How non-technical Founders should build tech startups in 2026
How founders can prototype, validate and get early signal before hiring engineers
17
Sergio Pereira
@SergioRocks
Jun 6
Non-technical founders have a much better starting point today. You can now take an idea and turn it into something visible very quickly. Not a full product. But enough to: - explain the concept - show the workflow - test reactions - speak with potential clients - collect early
sergiopereira.substack.com
How non-technical Founders should build tech startups in 2026
How founders can prototype, validate and get early signal before hiring engineers
2
Sergio Pereira
@SergioRocks
Jun 5
Most people think the biggest opportunity in AI is to “build a SaaS”. I think there’s a much simpler starting point: Turn the repetitive parts of your own work into AI-powered workflows. Things like: - meeting notes → Jira tickets - client feedback → product decisions - infra
sergiopereira.substack.com
Service as a Software
How Fractional CTOs, freelancers and employees can turn repeated work into AI-powered systems
1
Sergio Pereira
@SergioRocks
Jun 4
Your vibe coded product is probably closer than you think. A lot of Founders I speak with have the same story. They spotted a real business opportunity. They used ChatGPT, Lovable, Replit, or a combination of those. A few weeks later, they have something that works. Clients
Sergio Pereira
@SergioRocks
Jun 1
The best Startup Founders I’m seeing right now are not waiting for permission to start. They’re not waiting to raise money. They’re not waiting to hire a full team. They’re using AI tools to go from idea to something tangible: - market exploration - customer personas - workflow
sergiopereira.substack.com
How non-technical Founders should build tech startups in 2026
How founders can prototype, validate and get early signal before hiring engineers
4