New to Freelancer.com but highly experienced: 100% Success rate and 100% 5 Star rating on Upwork. 10+ years with Wordpress/Woo custom plugins and APIs (PHP), Shopify (Liquid), Nationbuilder (Liquid) and e-commerce API connections (Stripe, Authorize.nat, Paypal and many others). Over 1,000 public skill endorsements on Linked-In.
If we speak, I'll be able to tell you in one instantly confirmable sentence how/why I've designed highly deliverable templates and sent over 2 billion emails thru Sendgrid and Mailchimp (and other services too).
I've worked on many big-budget projects where we had the leisure to do huge amounts of A/B testing and market behavior research, so sometimes my suggestions might possess a bit of authority and be very helpful to your project.
I'm choosy about the jobs I accept: I want to preserve my 100% success and my 100% 5-Star ratings, so if I'm in any doubt about completing your project to your 5-Star satisfaction, I'll say so and bow out.