What Founders Say
Loved by founders. Trusted by operators.
Real feedback from ecommerce founders who've launched, rebuilt or scaled their stores with Sigma.
"John rebuilt our Shopify store from scratch. Conversion jumped from 0.9% to 3.4% in the first 60 days and we finally feel like a premium brand online."
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Amara Bennett
Founder, Lyra Fashion House
"Sigma understood our customer better than we did. The new product pages, bundles and email flows doubled our monthly revenue inside a quarter."
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Sienna Marsh
Owner, Glowfolk Skincare
"We went from a clunky WooCommerce store to a high-converting machine. AOV is up 38% and returning customer rate is at an all-time high."
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Damian Cole
Founder, Apex Fit Apparel
"The redesign on Squarespace was beautiful, but the real magic was the strategy. Sales tripled in the first holiday season after launch."
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Noor Ali
Founder, Maison Lumen Home Decor
"John engineered an offer ladder and funnel that took our digital products from $1K to over $18K months. Strategic, fast, and ROI-obsessed."
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Marcus Vega
Digital Products · Vega Studio
"Most agencies hand you assets. Sigma hands you a growth system. ROAS doubled within two months and hasn't dropped since."
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Eliana Cortez
CMO, Aurora Beauty Co.
Verified Upwork Reviews
Five stars, every project.
Real screenshots from real clients on Upwork, covering Shopify builds, optimization and email marketing systems.
Real Client Conversations
From preview link to first sale.
Unfiltered chats with founders approving previews, going live, and celebrating their first orders and profits.
