The first three months as a tech lead set the tone for what follows. Here’s what to focus on, what to ignore, and the mistakes most people make.

Josh Hornby

The first 90 days as a tech lead should focus on understanding before changing. Month one is for listening to team members, mapping systems, and identifying real problems without solving them. Month two builds trust through regular 1:1s, aligning with your manager, and connecting with cross-functional partners. Month three introduces small, achievable wins that demonstrate your leadership approach. Common mistakes include changing too much too fast, trying to remain an individual contributor, avoiding difficult conversations, and solving problems for people instead of with them. Success means building foundational relationships and trust, not transforming everything immediately.

Your First 90 Days as Tech Lead