What Founders Say

Loved by founders. Trusted by operators.

Real feedback from ecommerce founders who've launched, rebuilt or scaled their stores with Sigma.

1. Verified Reviews

Five stars, every project.

Platform-verified reviews from Upwork, covering Shopify builds, store optimization and email marketing systems.

5-star Upwork review — Shopify store setup, customization and optimization by John Ojo — Verified reviewUpwork

5-star Upwork review — Shopify Store Optimization endorsed by client — Verified reviewUpwork

5-star Upwork review — Email Marketing System Setup — Verified reviewUpwork

2. Client Proof

From preview link to first sale.

Unfiltered chats with founders approving previews, going live, and celebrating their first orders and profits.

Client chat — Enfom Clothing store preview and product additions — Client conversationDirect message

Client chat with Pedro — Enfom Sportswear preview review — Client conversationDirect message

Client chat with Sharlecia Blue — approving Shopify preview to go live — Client conversationDirect message

Client chat with Ashraf — first orders coming in after SEO and marketing — Client conversationDirect message

Client chat with Ashraf — £47 profit on first order after launch — Client conversationDirect message

Client chat with Katharina — more traffic and SEO progress after working with Sigma — Client conversationDirect message

Client chat with Vanta Thread — sales from browse abandonment and cart recovery emails — Client conversationDirect message

Client chat with Kelli — first sale after the store rebuild — Client conversationDirect message

Client chat with Rina — feedback on the updated, cleaner store — Client conversationDirect message

3. Written Testimonials

In their own words.

Written feedback shared by founders after launch. Certain client identities, commercially sensitive data and project details are withheld where required by confidentiality agreements.

"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."

AB

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."

SM

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."

DC

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."

NA

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."

MV

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."

EC

Eliana Cortez

CMO, Aurora Beauty Co.

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