At first glance you could make a case this may be a product from Stripe. When I am evaluating a product and it doesn't showcase a lot of creativity I have a hard time taking it serious or recommending it to colleagues. I'd also imagine most of the audience they are marketing to _has_ heard of Stripe.
For more constructive criticism, the landing page is full of skeleton UI and it's hard to imagine what I will get out of the integrations. I realize it's a mockup, but I'd imagine you already know what would be in those boxes. Instead of the 3 gray boxes, show me as a user what I will see. Is it a summary of the integration? Is it an individual issue or pull request? Is it the most recent activity for that integration?
I'm also not a huge fan of the letter spacing site wide, I think removing it looks like an immediate vast improvement when removed.