Hi there,
I wish I could help in your budget, but I am sure you won't get some qualified enough to take care of everything you have mentioned specially considering someone with the knowledge of Linnworks. Setting up, integration of linnworks with all your ebay and Amazon stores and then magento.
I sell USD100-120K a month right now in Europe, US, Canada and UK and we sell extensively through Amazon FBA fullfilment networks and also on many ebay and Amazon accounts. Our business runs totally on Linnworks. We are physically based in London, Chicago and KL/Malaysia.
I am sure, I can help you tremendously as a long term advisory and consultant. For Ebay store design, we get it done through outsource service providers as it requires a lot of design work which we don't do. However if you talk about full integration of Linnworks as your central core app with rest of the platforms, then yes, we do it. You talk about growing Amazon business, expanding into bigger markets, yes, I can guide, advise and walk you through it and ensure your business grow to next level for sure.
Thanks
Sunny