[imhoguy]

> I was thinking to have a general resume which I would tailor to specific company needs, where I would remove/add job positions which are more relevant to what the company is looking for.

This is what I do - keep few position description templates and send customized CVs. I assume that this time you also want to target contract roles, not permanent employment. Keep complete list on LinkedIn SEO. Good too have professional website where you can present your competences and experience in detail in CV. Then you can experiment with some portfolio structure like: Web Development, Windows Applications Development, Web Automation ... with more descriptions under etc. Just look how IT Consulting shops pitch their areas.

In CV add some general abstract intro where you explain you do contracting 2009-2017 with matching buzzwords and brands. Then list most relevant gigs: 12/2015-2/2016 Project for XYZ - tailored skills and duties description

If units are too small then group them like: 2015-2017 Freelance work on ABCD and EFGH for several shops.

Keep it simple to get foot in the door. On screening call if you notice customer would be interested in something specific ask if you can send refined CV.