Sorry that I don't have a specific answer to your question but I have extensive WP membership experience and work with with Memberium/IS with two clients. If you're interested in chatting you can schedule a call to discuss your needs.

Hello, I know WordPress and Memberium, but if you want someone local, you can always go to your local WordCamp or WordPress meetup. The WordCamps are listed at WordCamp.org and there is usually one in every major city. You can message me with more of the details that you would like on your WordPress site and we can do a call for you to show me what you want completed on your website.

Bruce

Here's what you require knowing about using Confusionsoft, er, I mean Infusionsoft.

Infusionsoft barely works.

If you think you must use Infusionsoft, you should avoid making Infusionsoft API calls as part of your funnel (sales, conversions, money flow, etc).

Infusionsoft APIs should only be called after all funnel steps are complete + they should only be called in an async manner, in other words, you should never wait for or expect any Infusionsoft API call to ever work.

This means you just store all your data locally + have a background process that repeatedly jams your data into Infusionsoft until a successful status code is returned.

Then delete the queued data you're trying to jam into Infusionsoft from your processing queue.

All except one of my many hosting clients has abandoned Infusionsoft because it fails so consistently.

The WordPress space is expansive and full of people with cross-skills. My advice would be to go to WordPress-specific outlets, and then ask specifically for Memberium/Infusionsoft.

WordPress specific outlets may be online or digital, for example:

DIGITAL -
You'll be bombarded with potential freelancers if you post in any of these Facebook groups.
Advanced WordPress: https://www.facebook.com/groups/advancedwp/?ref=br_rs
Intermediate WordPress: https://www.facebook.com/groups/IntermediateWordPress/?ref=br_rs
WordPress Help & Share: https://www.facebook.com/groups/wphelpandshare/

Next, outsourcer websites are not bad at all. I've had nothing but amazing experiences with Codeable.io, and they have hundreds of experts available so if you post your WordPress + Memberium + InfusionSoft request, there's a high chance a highly qualified outsourcer will be able to help. This is not a paid endorsement, I sincerely love and use their service.

IN-PERSON
WordCamps & WordPress meetups are also a great place to go. You can check https://central.wordcamp.org/ to see what's going on near you. Most WordCamps will have an "are you hiring?" board where you can write your request and people will contact you. Likewise, most meet-ups have a designated time at the beginning and end for potential employers and service providers to connect.

Your networks!
Seriously, we've had tons of luck recruiting extremely qualified WordPress professionals that had non-WordPress skills by simply using our own networks to crowdsource our need. For example, we hired one of our developers because he responded to a Twitter blast of ours. Since WordPress is such an expansive network, chances are that you know someone, or know someone who know someone, with the skills that you need.

Best of luck! Supplementary helpful information may be this article I wrote on how to screen your web development professional: https://calderaforms.com/2017/12/choose-right-professional-website-project/. Summary: ask for a portfolio, find someone in your niche and mind their business skills as well as their technology skills.

Hope this helps!