I'm able to advise and use the best technologies and work methodologies that will save you a lot of time and resources.
You're looking for someone who:
will understand your needs and pick the best tools,
design the architecture of your project,
bring a Minimum Viable Product alive from your idea in a very few short iterations (agile methodology),
will advise in case you need additional human resources to help your project grow...
And for the more technical side of my skills... I'm a full-stack engineer (front-end & back-end).
I like to use those technologies (but not only...):
Responsive HTML 5/CSS 3
Ruby on Rails, Node.js, Elixir, Phoenix
Being a passionated engineer, I also don't hesitate to participate and help at some developers and teaching events : I was a mentor at Paris.rb (largest Ruby meetup in Paris) and sponsored Rails Girls Paris, an event dedicated to bring more women and diversity in the tech world.