I spent 3 years as CTO of a large Magento CE Ecommerce store. I built a dozen or so completely custom extensions; redesigned several times; migrated servers and databases; and ran into just about every problem under the sun. Generally a simple custom extension would be better off outsourced, but for any issues, especially with something that you've already tried outsourcing, hit me up. I also have a ton of expertise in shipping & logistics on the parcel level and do a lot of consulting with ecommerce outside of technical development or design.