Getting the right co-founders on board is the first and most important step in bootstrapping a startup, and investors consistently look for a specific combination on a founding team, someone who can build the product and someone who can sell it. A team without both of these capabilities represented at a genuine level is missing something investors treat as a serious warning sign, regardless of how strong the underlying idea is.
Investors are, in effect, investing in the founding team as much as the idea itself, since even a strong idea executed by a team missing either core capability tends to struggle in ways a well-rounded team would not.
A tech brain and a sales maverick cover the two fundamental needs
Every startup needs someone capable of building a genuinely good product and someone capable of selling it effectively, and a founding team missing either of these, relying instead on outsourcing or hoping to hire the gap later, is weaker in the eyes of investors than one where both capabilities exist among the founders themselves.
Investors read team composition as a signal about execution risk
A founding team with an obvious capability gap signals to investors that the business faces execution risk beyond the normal uncertainty of any early-stage venture, since a missing core capability is not something that can typically be worked around quickly or cheaply once the business needs to move fast.
Complementary skills matter more than shared enthusiasm or background
Founders who share the same background or skill set, several technical people, or several sales-oriented people, without covering the other core capability, tend to be viewed less favourably by investors than a team that has deliberately covered both, regardless of how aligned or enthusiastic that similar-skilled team might be.
This combination should be established early, not patched in later
Bringing on a complementary co-founder early, before a funding conversation becomes urgent, generally produces a stronger and more credible team than attempting to patch an obvious capability gap once investors have already raised it as a concern.
Ventures that have the technical capability but not the commercial one can access structured support through the Technology Innovation Agency.
Frequently asked questions
Why do investors specifically look for both a technical and a sales-capable co-founder?
Because a founding team missing either core capability faces execution risk that is not something that can typically be worked around quickly, and investors treat this gap as a serious signal about the business’s chances of success.
Is outsourcing the missing capability, product development or sales, an acceptable substitute?
Generally viewed as weaker by investors than having that capability represented among the founders themselves, since outsourced capability is less integrated into the core decision-making of the business.
Does having founders with very similar backgrounds hurt a startup’s chances with investors?
It can, specifically when that similarity means both core capabilities, building and selling, are not genuinely covered, regardless of how aligned or enthusiastic a similarly skilled founding team might otherwise be.
When should a founder bring on a complementary co-founder to cover a capability gap?
As early as possible, ideally well before a funding conversation becomes urgent, since patching an obvious gap once investors have already raised it as a concern is a weaker position than having addressed it proactively.
Does this tech-brain-and-sales-maverick combination apply to every type of startup?
The underlying principle, covering both product-building and sales capability at the founding level, applies broadly, though the specific balance needed can vary somewhat depending on the nature of the business.
Further reading
Originally published in June 2017. Updated September 2026 and rewritten in house voice, dropping the book-excerpt framing while keeping the original founding-team argument intact.
