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14 Years · 400+ Projects · 0 NDA Breaches | ★★★★★ 4.7 Clutch (13 Reviews)

400+ Projects.
One Goal: Performance.

We engineer digital foundations for ambitious brands that demand speed, security, and scalability. These aren't just websites; they are performance-first revenue engines built to scale.

View Case Studies Start Your Project
400+
Projects Delivered
94/100
Avg PageSpeed
12+
Countries Served
0
NDA Breaches
Shopify Plus · UK Fashion Label
WooCommerce Migration · UAE Growth Agency
Figma to WordPress · UAE Pharma
Agency Scale-Up · UK Design Studio
0% Organic Traffic Drop on Migration
6× Agency Revenue in 8 Months
Shopify Plus · UK Fashion Label
WooCommerce Migration · UAE Growth Agency
Figma to WordPress · UAE Pharma
Agency Scale-Up · UK Design Studio
0% Organic Traffic Drop on Migration
6× Agency Revenue in 8 Months
★ Award-Winning Engineering Portfolio

Selected Works &
Case Studies.

Explore how Zest Web Solutions engineers sub-second site performance, scalable D2C architectures, and zero-downtime platform migrations for leading global brands and agency partners.

All Projects (4) Shopify Custom Shopify Plus Speed Zero-Downtime Migration White-Label Technical SEO
🇮🇳 Featured Global D2C Launch

Sarla Sarees
Taking a Traditional Showroom Global with Shopify

Transitioned an established brick-and-mortar ethnic fashion showroom into a high-converting global D2C e-commerce platform.

Sarla Sarees Logo Verified D2C Client
Client Sarla Sarees
Industry Luxury Ethnic Apparel
Country India (Global Shipping)
Platform Custom Shopify
Duration 3 Weeks
+410%
Organic Growth
98
Performance Score
1.1s
Mobile LCP Speed
★★★★★
Client Rating

The Challenge

Sarla Sarees operated as a highly successful physical retail showroom in Belgaum, Karnataka, but lacked an online shopping presence. The brand needed to transition a traditional, touch-and-feel retail buying experience into a high-converting global D2C store.

The client required a scalable Shopify architecture capable of structuring thousands of saree variants, multi-currency processing for international buyers in the US, UK, and UAE, and sub-second mobile page loads.

Engineering Solution

🛍️

Custom Liquid Architecture

Engineered lightweight custom Liquid section blocks without heavy page builder app bloat.

📱

Mobile-First Checkout UX

Touch-optimized product viewports and instant add-to-cart drawers engineered for 1.1s mobile LCP.

📐

JSON-LD Schema Graph

Nested `@type: Product`, `Offer`, and `BreadcrumbList` schemas for rich snippet indexation.

Storefront Interface Gallery macOS & iOS Viewport Mockups
🔒 https://sarlasarees.com
Sarla Sarees Shopify Storefront Preview

Quantifiable Business Outcomes

15+ Countries Expanded sales across India, US, UK, & UAE markets.
1,000+ SKUs Catalog structured with sub-second facet filtering.
Zero Code Debt Clean Liquid theme for seamless in-house editing.

Technology Stack

Shopify Custom Liquid Theme CLI Shopify Markets API Technical SEO JSON-LD Schema Mobile CSS Grid Cloudflare CDN
★★★★★

"Zest Web Solutions built our online store with incredible efficiency and attention to detail. Our traditional saree showroom is now selling seamlessly to customers worldwide."

Sarla Sarees Management E-Commerce Client · Belgaum
Read Full Review on Clutch ↗

Need Similar Results?

Build a high-converting custom Shopify storefront tailored for your brand.

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🔒 Protected by Mutual NDA

White-Label Technical SEO & Engineering Retainer
Silent Technical Bench for International Digital Agency

Silent offshore developer bench executing technical SEO refactoring, custom schema graphs, and Core Web Vitals across multi-client retainer accounts.

Confidential Partner Logo Silent Partner Bench
Client Confidential Agency Partner
Industry White-Label Technical SEO
Country International (US / UK / EU)
Platform Shopify Plus & Headless WP
Duration 18+ Month Retainer
🔒 Protected under NDA
+180%
Search Impressions
100%
CWV Pass Rate
18+ Mo
Zero Partner Churn
★★★★★
White-Label Rating

The Challenge

A fast-growing international digital marketing agency won multiple enterprise client retainers but lacked internal senior engineering staff to execute complex technical SEO refactoring, custom schema graphs, and Core Web Vitals optimizations.

Hiring full-time senior developers created payroll margin risks. They required a silent, reliable technical development bench capable of handling multi-client dev pipelines under strict NDAs and white-label SLAs.

Engineering Solution

🏷️

Silent White-Label Delivery

100% white-label commits, unbranded client reporting decks, and shadow developer staging access.

🔍

Crawl Budget & Log Audits

Server log file analysis, orphan URL discovery, and sitemap loop resolution for 50,000+ page catalogs.

⚡

Core Web Vitals Remediation

Sub-1.2s LCP speed recovery, script minification, and critical CSS inline injection across client sites.

Technical Dashboard & Schema Architecture Agency Staging Environment
🔒 https://staging.agency-partner.com/technical-seo
Agency White Label Technical Dashboard Preview

Quantifiable Business Outcomes

+180% Organic Impressions Multi-client Search Console organic growth.
100% Core Web Vitals Pass Sub-1.2s LCP achieved across 4 client sites.
18+ Month Retainer Zero partner or client churn since onboarding.

Technology Stack

Screaming Frog Enterprise GSC API Looker Studio Cloudflare Workers Shopify Liquid Headless WP JSON-LD Validator
★★★★★

"We stopped turning down projects. We stopped stressing about technical delivery. Zest just handles it with 100% white-label accuracy and top engineering standards."

Amad H. & Agency Partners White-Label Client
Read Full Review on Clutch ↗

Need Similar Results?

Scale your agency capabilities with a silent technical dev bench.

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🇦🇪 Multi-Market Migration · Zero Downtime

WooCommerce to Shopify Migration
UAE E-Commerce Growth Client

Complete zero-data-loss database migration, 301 URL redirect mapping, and speed optimization for a 1,200+ SKU store catalog.

AndersonBPO Logo Verified Enterprise Migration
Client AndersonBPO / UAE Retail
Industry Consumer Goods E-Commerce
Country Dubai, UAE
Platform WooCommerce → Shopify
Duration 14 Days
3.8s→0.9s
LCP Speed Boost
0%
Organic Traffic Loss
1,200+
SKUs Migrated
★★★★★
Client Rating

The Challenge

The client's legacy WooCommerce store suffered from database bloat, plugin conflicts, slow page speeds (3.8s LCP), and server crashes during promotional campaigns.

Migrating 1,200+ SKUs, customer records, and order histories to Shopify posed a huge risk of losing high-ranking Google SEO positions and interrupting live sales.

Engineering Solution

🔄

Zero-Data-Loss Pipeline

Custom CSV data mappers and Shopify import APIs for products, customers, and orders.

⛓️

301 SEO Redirect Engine

1:1 URL path mapping built from Screaming Frog log data to preserve 100% search authority.

⚡

Sub-Second Liquid Theme

Lightweight Liquid section templates matching upgraded Figma designs with sub-second LCP.

Migration Architecture & Storefront Shopify Custom Liquid Theme
🔒 https://store.uae-client.com
WooCommerce to Shopify Migration Performance Architecture

Quantifiable Business Outcomes

76% Speed Increase LCP reduced from 3.8s down to 0.9s.
0% Organic Loss 100% search engine positions retained.
+31% Conversion Lift Store conversion rate increased in 30 days.

Technology Stack

WooCommerce Shopify Liquid 301 Redirect Engine Screaming Frog Shopify Import API Cloudflare Edge
★★★★★

"I came with a messy website and an even messier migration concern. The result was amazing — zero traffic loss, 0.9s load times, and a 31% lift in conversion rate."

Sandeep Modi Managing Director, AndersonBPO
Read Full Review on Clutch ↗

Need Similar Results?

Plan a zero-downtime platform migration with 100% SEO traffic protection.

Book Strategy Call →
🇬🇧 Shopify Plus Performance Recovery

Shopify Plus Speed Recovery
High-Volume UK Fashion Label

Overhauled a slow 15.9s Shopify Plus storefront plagued by 50+ third-party apps, recovering sub-2-second LCP and +24.6% checkout conversions.

UK FASHION LABEL
Shopify Plus Storefront
Client UK Luxury Fashion Label
Industry Luxury Apparel E-Commerce
Country London, United Kingdom
Platform Shopify Plus
Duration 9 Days (Zero Downtime)
🔒 Protected under NDA
15.9s→1.9s
LCP Load Result
22 → 88
Mobile PageSpeed
+24.6%
Checkout Conversion
★★★★★
Client Rating

The Challenge

A high-volume UK fashion label suffered severe performance drop-offs on mobile networks. With 50+ active app integrations, unoptimized scripts, and heavy hero banners, the store logged a mobile PageSpeed score of 22/100 and a 15.9-second LCP.

Mobile bounce rates soared by 38%, inflating paid ad customer acquisition costs (CAC) and losing critical holiday sales revenue.

Engineering Solution

⚡

App Script Consolidation

Consolidated 50 apps to 31 essential tools, replacing 19 third-party scripts with native Liquid code.

🖼️

Next-Gen Image Pipeline

Deployed dynamic AVIF/WebP image rendering pipelines with dynamic layout sizing filters.

🎯

Critical CSS & Preload

Injected inline Critical CSS and set high fetch priority (`fetchpriority="high"`) on LCP hero assets.

Speed Optimization & PageSpeed Interface Shopify Plus Theme Performance
🔒 https://pagespeed.web.dev/analysis/uk-fashion-label
Shopify Plus Speed Recovery Case Study Interface

Quantifiable Business Outcomes

88% LCP Reduction Speed dropped from 15.9s down to 1.9s.
88/100 PageSpeed Mobile Lighthouse score recovered from 22.
+24.6% Conversion Lift Direct increase in mobile checkout completions.

Technology Stack

Shopify Plus Liquid Theme CLI AVIF / WebP Pipeline Lighthouse CI Chrome CrUX API Critical CSS
★★★★★

"Zest handled the technical debt so we could focus on growth. They overhauled our store — optimized from 15.9s down to 1.9s load time — and delivered a flawless digital experience under our brand."

Tulip D. Co-Founder, UK Fashion & Agency Partner
Read Full Review on Clutch ↗

Need Similar Results?

Book a technical speed audit with senior Shopify engineers.

Book Strategy Call →
Enterprise Partner Benefits

Why Brands & Agencies Choose Zest

We combine deep platform engineering expertise with strict confidentiality to deliver sub-second performance and quantifiable business outcomes.

🏷️

White-Label Delivery

We operate seamlessly as your invisible technical team. All code commits, audits, and performance reports are delivered under your agency branding with zero client-facing trace.

🔒

NDA Protection

Every engagement is backed by comprehensive, legally binding international Non-Disclosure Agreements (NDAs). We never contact your end-clients or showcase protected work without explicit consent.

🛍️

Shopify Expertise

From Shopify Plus Liquid theme refactoring to complex app consolidation and zero-downtime migrations, our senior engineers solve platform limitations for high-volume stores.

🌐

WordPress Expertise

We build decoupled headless WordPress backends, custom ACF Gutenberg blocks, and ultra-fast PHP architectures designed for security, scalability, and seamless editing.

📈

Technical SEO

We go far beyond basic on-page tags. Our technical SEO team performs log file analysis, crawl budget optimization, nested JSON-LD schema graph coding, and Core Web Vitals remediation.

💬

Dedicated Support

Enjoy direct access to senior developers with guaranteed SLA response times. We integrate into your Slack or project management tools to resolve emergency bugs within hours.

Got Questions?

Frequently Asked Questions

Answers to common questions about our technical execution, migrations, and agency partnerships.

1. How do you protect client confidentiality under white-label partnerships?
We sign strict mutual NDAs and non-compete agreements prior to project onboarding. We operate silently behind the scenes using your agency staging domains, unbranded documentation, or your internal communication channels. We never contact your end-clients directly.
2. What is your process for zero-downtime platform migrations?
We build and test the new site entirely in a sandbox staging environment. We map 100% of legacy URL paths to new canonical URLs via 301 redirect architecture using Screaming Frog log data, export/import databases seamlessly, and execute DNS cutover during off-peak hours to guarantee zero revenue downtime and zero traffic drops.
3. How do you guarantee Core Web Vitals and site speed improvements?
We address root-cause performance bottlenecks directly in the codebase: minifying Liquid/PHP scripts, refactoring render-blocking JS, replacing heavy apps with native code, setting explicit image aspect ratios for zero CLS, and preloading LCP hero assets. We benchmark results using Lighthouse CI and real-world Chrome CrUX field metrics.
4. Can Zest senior engineers join client calls directly under our agency brand?
Yes. Upon request, senior engineers can participate in technical client discovery or scoping calls using your agency email domain and branded background, acting as your internal VP of Engineering or Senior Technical Architect.
5. What technical SEO deliverables are included in custom audits and retainers?
Deliverables include full log file crawl audits, canonical URL loop fixes, robots.txt exclusion rules, custom multi-node JSON-LD schema graphs, Core Web Vitals remediation, sitemap architecture optimization, and AI-search (AEO/GEO) readiness reports.
6. How quickly can your engineering team onboard and start dev sprints?
Onboarding takes under 48 hours following NDA execution and repository access. Standard development sprints launch within 3 to 5 business days, and emergency technical hotfixes receive a 4-hour SLA response.
7. What e-commerce platforms and technical stacks do you specialize in?
We specialize in Shopify & Shopify Plus (Liquid, Storefront API), WordPress & WooCommerce (PHP, Gutenberg, ACF, Headless Next.js), technical SEO tools (Screaming Frog Enterprise, GSC API, Lighthouse CI), and Cloudflare edge workers.
8. What pricing models and SLAs do you offer for projects and retainers?
We offer transparent fixed-price project roadmaps for store builds and migrations, as well as monthly dedicated engineering bench retainers with guaranteed turnaround SLAs and zero hidden fees.
Your Turn

Your Brand's Next
Growth Milestone Starts Here.

Let's review your current digital infrastructure. We'll identify technical bottlenecks, risks, and conversion gaps, and provide a fixed-price roadmap to scale.

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