CTO Lifecycle
The source model has five organizational stages. The CTO is a Startup Coder at the beginning, an Engineering Manager during growth, and an All-in-one CTO during formalization. As the structure becomes more complex, that role splits into CIO, CTO, and VP Engineering. The talk assigns no new CTO profile to decline.
The transformation is not a single ladder. It moves along process orientation, technical depth, and organizational scale. Delivery Manager and Architect are poles on those axes rather than sequential steps.
The model helps founders and boards match the company phase to the role contract they need. A new product or another S-curve may answer decline, but it is a separate strategic hypothesis rather than the fifth role in the source model.
Identify the current phase: startup, growth, formalization, structural complexity, or decline.
Name the role profile for that phase: Startup Coder, Engineering Manager, All-in-one CTO, or a split executive team.
Assess the role along process, technical depth, and scale instead of turning the poles into a career ladder.