I ___
a (software) project from concept to implementation.
"___" here refers to being solely responsible for all phases of the SDLC process for this project.
I ___
a (software) project from concept to implementation.
"___" here refers to being solely responsible for all phases of the SDLC process for this project.
How about spearheaded? From M-W:
spearhead: to serve as leader or leading element of
Your example:
I spearheaded a (software) project from concept to implementation.
Spearhead is commonly used in management circles, as is champion, although I can't find a definition of the latter consistent with my experience.
How about self-executed or self-managed? Alternatively, individually executed or individually managed.
You might also consider throwing in the word "solo", as in
I self-executed a solo (software) project from concept to implementation.
or
I self-managed a solo (software) project from concept to implementation.
or
I individually executed a solo (software) project from concept to implementation.
or
I individually managed a solo (software) project from concept to implementation.
How about oversaw or oversee? This would describe your role in either a solo or group project.
I was tasked to oversee (software) project from concept to implementation.
I oversaw (software) project from concept to implementation.
I piloted a (software) project from concept to implementation.
The word for transforming a software project is “refactoring”, except that makes little sense with your examples. Maybe you want to change the title of the question.