From Senior Developer to Technical Lead is the definitive guide for engineers stepping into the pivotal role of a Technical Lead (TL). In today's fast-paced and collaborative software development environments, the shift from Senior Engineer to TL is both a promotion and a profound transformation. This book offers an indispensable roadmap for navigating that journey-covering not just the added responsibilities, but the entirely new mindset required to succeed. This book demystifies the TL role by breaking it into core areas: leadership mindset, self-assessment, architecture and technical strategy, code quality culture, and cross-functional collaboration. Drawing from real-world scenarios, it contrasts the expectations of senior individual contributors with the broader, team-centric impact of TLs. You'll explore how to delegate effectively, foster psychological safety, balance hands-on work with strategic oversight, and guide your team through both technical challenges and organizational dynamics. Whether you're a newly minted TL or preparing for the leap, Technical Lead Transition arms you with actionable tools, reflection prompts, and best practices to thrive-not just as a builder of systems, but as a multiplier of people. This is the playbook every engineering leader wishes they had when they first took the reins.