I manage a team of CRO professionals and we are exactly the experts you are searching for. My overall experience in digital marketing is more than 15 years, last 7 of which together with my team I help businesses worldwide become data-driven by making use of their web-statistics and improving conversion rates.
Our experience in conversion rate and funnel optimization and A/B testing includes analytics, getting actionable insights from Google Analytics and other data analytics platforms, reporting and A/B testing (from idea to implementation in VWO, Optimizely, Convert, including creation of hypothesis, testing plan, jQuery coding to create variations and reporting).
My guest posts about CRO: - In VWO blog - Google: VWO 5 Parameters Of High Converting Call to Action Button- Examples & Case Study - in CrazyEgg blog - Google: Using Heuristics to Increase Your Ecommerce Conversion Rate