HiringYourSecondDeveloper:WhatChangesAftertheFirstHire

With one developer, informal communication works fine — there's no one else to coordinate with, and undocumented decisions live in one person's head without causing friction. With two, that same informality starts to cause real problems: conflicting changes, duplicated work, or one developer unaware of a decision the other made.

This is the point where documentation that felt optional with a solo developer becomes genuinely necessary — architecture notes and clear task ownership prevent the two developers from working at cross-purposes.

Adopt a clear code review process if you haven't already — with two developers, having one review the other's pull requests (even informally) catches issues neither would catch working alone, and keeps both aligned on the codebase's overall direction. Clarify ownership boundaries — even loosely, who owns which part of the system — to reduce the coordination overhead of every decision needing both people's input.

A shared task tracker becomes more important than ever, since you now need visibility not just into what's being built, but into how two people's work fits together without conflicting.

It depends on what's actually slowing you down. If you're capacity-constrained on the same kind of work, a similar skill set to your first developer adds direct throughput. If you're blocked on something your first developer doesn't specialize in — mobile, for instance, if your first hire is backend-focused — a complementary skill set may unlock more progress than simply adding more of the same.