Nick Olsen is the Head of AI Innovation at Mainsail Partners, where he works hands-on with 25 scaling vertical SaaS companies helping them adopt AI in engineering and product. Before joining Mainsail, Nick spent 20 years helping build ResMan from a 3-person startup into a scaled software company serving the multifamily property management market.
Today, Nick leads a team of engineers who embed directly inside portfolio companies to build AI systems alongside their teams. They don't just advise from the sidelines—they commit code, ship features, and help technical leaders redesign how modern software organizations operate.
Nick explains why AI-first engineering is no longer a competitive advantage for SaaS companies—it's becoming the minimum requirement to stay competitive. The winners won't just write code faster. They'll build better products, make better decisions, and deliver dramatically more customer value with AI-native teams.
Key Takeaways
- Table Stakes — AI-first engineering is no longer optional for serious SaaS companies. It's becoming the minimum operating standard.
- Roles Are Collapsing — Product, design, and engineering are moving closer together as AI removes slow handoffs and bottlenecks.
- Velocity Misleads — Shipping 3x more features doesn't matter if customers don't want them. Outcome beats output.
- Judgment Wins — AI makes building cheaper and faster. Strategic product judgment becomes more valuable, not less.
- Agents Matter — The best teams increasingly treat AI agents like teammates with jobs, accountability, and measurable performance.
- UX Is Changing — Customers may increasingly stop logging into SaaS apps and interact through agents instead.
Quote from Nick Olsen, Head of AI Innovation at Mainsail Partners
"We are well past any point of skepticism or any engineer that says, Hey, this isn't gonna be here forever, or this isn't my thing. Engineers no longer should be starting in the traditional code editor, the IDE. Engineering has moved to much more of an agentic approach where you're starting in the terminal or or some sort of Claude Code or Codex app.
"How we're building software has completely and radically shifted. Companies are starting to move past treating AI as a tool. They're starting to treat AI as the way that they actually operate. It's not a tool like Excel is for a financial analyst, but that's actually where I start.
"We're trying to see people transition to treat AI as an actual teammate and actually affecting change within their organization.. And that's from the product and management side as well as to the engineering side."
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