I need to understand your situation before proposing anything: what you're trying to achieve, where things are stuck, and what kind of involvement actually makes sense. From there, the shape of the work depends on the problem.
Project-based
Fixed scope, clear objectives
Architecture reviews, performance investigations, technical designs. You know what you're paying for, and I have skin in the outcome.
Retainer
Ongoing technical leadership
Guiding a team, staying available for decisions, remaining close to the product over time. Usually the right structure when the work involves people as well as code.
Time & materials
When scope can't be defined
Sometimes the honest answer when the work genuinely can't be scoped upfront. I'll say so when that's the case.
Write to info@maurizioturatti.com and describe your situation in a few lines. If there's a potential fit, we'll find a time to talk.