TECHNICAL SEO PARTNER · EST. 2012 · 18+ SENIOR DEVELOPERS · 100% IMPLEMENTATION
Technical SEO Services
for Brands & Agencies.
Zest diagnoses, engineers, and implements code-level technical SEO solutions for high-performance ecommerce stores and digital agencies. From Shopify Liquid and WordPress refactoring to sub-800ms Core Web Vitals, warning-free schema graphs, and zero crawl waste—we fix the technical layer that drives organic revenue.
Shopify Technical SEO
Liquid template optimization, collection canonical handling, and app script deferral.
Core Web Vitals & Speed
Native sub-800ms LCP, 0.00 CLS, and low INP code-level speed refactoring.
Crawl & Indexation Control
Eliminating index bloat, resolving redirect loops, and optimizing crawl budget.
Advanced Schema Graphs
Warning-free connected JSON-LD @graph schemas for Google rich results & AI discovery.
Zero-Loss Migrations
Complete 301 redirect mapping, staging QA, and domain cutovers with zero ranking drop.
Agency SEO Fulfillment
Silent white-label technical SEO benches and PR delivery for partner agencies.
AGENCY TECHNICAL SEO BENCH
Need More Technical Capacity Without Hiring?
Plug Zest into your delivery team for Shopify, WordPress, SEO and custom development. We work behind your agency brand, follow your workflow, and operate under NDA.
Code-Level Capabilities
Technical SEO Engineering
Technical SEO Engineering
Built for Organic Revenue.
Traditional agencies hand you a PDF report. Zest is an engineering partner with 18+ senior developers who write, test, and deploy the actual code fixes into your repository.
Technical SEO Audits
Deep-dive root cause analysis: log analysis, crawlability bottlenecks, index bloat, and canonical errors. Request our diagnostic Free Website Audit.
Shopify Technical SEO
Custom Liquid theme refactoring, collection URL canonicalization, and sitemap structuring paired with Shopify Development and our SEO Hub.
Core Web Vitals Refactoring
Code-level performance optimization: script deferral and critical CSS rendering achieving sub-800ms LCP. Review our verified case studies.
Ecommerce Faceted Navigation
Untangling complex collection filters, product variant URLs, and parameter search to prevent crawl budget waste and duplicate indexing.
JSON-LD Schema & Entity Graphs
Warning-free nested @graph schemas for Product, Offer, AggregateRating, BreadcrumbList, and Organization to power rich snippets.
AI Search Optimization (GEO)
Engineering entity architectures and factual specification data for direct citation in Google AI Overviews, ChatGPT, and Perplexity.
Platform & CMS Migrations
Risk-free website migrations with comprehensive 301 URL redirect maps, schema parity checks, and staging QA to protect rankings.
WordPress & Headless SEO
SEO-first architecture and decoupled Next.js static site generation paired with WordPress Development and our WordPress SEO Hub.
Programmatic SEO Frameworks
Scalable database architectures and structured templates that generate thousands of high-intent, search-matched landing pages.
Technical Debt & Drop Recovery
Rapid diagnosis and recovery from algorithmic ranking drops, accidental sitewide noindex tags, crawl traps, and redirect loops.
Pre-Launch Staging QA
Pre-flight technical SEO quality checks on staging environments before going live, preventing ranking disasters before launch.
Ongoing Technical Retainers
Continuous monitoring, Core Web Vitals maintenance, log analysis, and dedicated developer hours. Learn about our Agency Partner Bench or Contact Our Team.
We Fix What Others Only Flag
Technical SEO Problems.
Technical SEO Problems.
Direct Code Solutions.
We don't deliver generic advice. Our senior engineers diagnose the root cause, write the code, and merge the pull request directly into your repository.
The SEO Problem
Shopify collection crawl bloat & duplicate product URLs
Our Engineering Fix
Refactor Liquid theme templates to force canonical root product URLs, consolidate faceted filter parameters, and eliminate duplicate crawl paths.
The SEO Problem
Failing Google Core Web Vitals with poor LCP and INP scores
Our Engineering Fix
Line-by-line script deferral, removing unneeded app payloads, generating critical inline CSS, and optimizing DOM depth to achieve sub-800ms LCP natively.
The SEO Problem
High-risk store redesign or CMS platform migration
Our Engineering Fix
Automated 1-to-1 301 redirect mapping, metadata preservation, staging environment QA, and post-cutover DNS verification with zero traffic drop.
The SEO Problem
Missing rich snippets & AI answer engine visibility
Our Engineering Fix
Implement custom JSON-LD @graph architectures directly in theme templates, ensuring warning-free schema validation and AI citation readiness.
The SEO Problem
Agency overflow & technical implementation bottlenecks
Our Engineering Fix
100% white-label execution: senior developers working directly in your Git repository and PM boards (Jira, ClickUp) under strict NDA.
Ecommerce Specialization
Why Shopify SEO
Why Shopify SEO
Requires Deep Technical Engineering.
Shopify is a powerful platform, but out-of-the-box architectural quirks can severely restrict organic search visibility without experienced Liquid development.
Architecture 01
URL & Canonical Handling
Shopify generates duplicate product URLs inside collections (
/collections/x/products/y). We refactor theme templates to enforce clean, direct product canonicals.Architecture 02
Faceted Collection Filters
Tag-based and app-based collection filters create millions of unindexed, thin URLs. We implement smart canonicalization and parameter rules to protect crawl budget.
Architecture 03
Liquid & Script Bloat Control
Third-party Shopify apps inject heavy render-blocking scripts. We audit app payloads and refactor custom Liquid code to eliminate script lag and improve INP.
Architecture 04
Structured Product Schema
Shopify themes often generate incomplete or fragmented schema. We code clean, warning-free JSON-LD @graph markup with full Offer, SKU, and AggregateRating data.
Architecture 05
Sitemap & Index Management
We structure collection taxonomies and robots.txt directives to prevent search engine spiders from getting stuck in low-value checkout or pagination loops.
Architecture 06
Shopify 2.0 & Plus Customization
Leveraging JSON templates, metafields, and custom section groups to build high-converting, search-optimized landing pages without heavy page builders.
Looking for full-stack Shopify engineering? Explore our Shopify Development Services, read our Shopify SEO Problems Guide, or visit the Technical SEO Hub.
Standardized Audit SOP
The Technical SEO Audit.
The Technical SEO Audit.
From Diagnosis to Code Deployment.
A milestone-driven engineering framework that finds the problem, explains the commercial impact, and implements the fix following the Zest Engineering Method™.
01
01 — Full-Site Crawl & Log Analysis
Execute deep crawl audits using custom tooling, analyzing server logs, HTTP response headers, crawl frequency, and indexation status in Google Search Console.
Audit
02
02 — Root-Cause Technical Diagnosis
Identify exact code-level culprits: Liquid template rendering bottlenecks, canonical conflicts, unoptimized JavaScript bundles, and broken schema graphs.
Diagnosis
03
03 — Prioritized Implementation Roadmap
Organize fixes into high-ROI sprint milestones based on organic traffic impact, Core Web Vitals lift, and technical feasibility.
Plan
04
04 — Code-Level Development & Deployment
Our senior engineers write and deploy the fixes directly in your Git repository (Shopify Liquid, PHP, Next.js, CSS/JS) following our Technical QA Framework.
Fix
05
05 — Validation, Re-indexing & Monitoring
Verify code performance across real physical devices, submit corrected sitemaps to Search Console, monitor indexation velocity, and track ranking lift.
Validate
Agency White-Label Bench
Need Technical SEO Capacity
Explore Agency Partnership
Need Technical SEO Capacity
Without Hiring Another Developer?
Digital, creative, and SEO agencies often know what needs fixing on client websites, but face development bottlenecks. Zest Web Solutions operates as your silent, white-label technical SEO implementation partner.
White-Label SEO Audits
Liquid & PHP Code Fixes
Core Web Vitals Sprints
Migration SEO Assurance
Schema & Entity Graphing
Unbranded Client Reports
Dedicated SEO Engineers
Monthly Retainers
Agency-First Safeguards
- 100% White-Label: We work quietly behind your agency brand.
- No Client Poaching: Your client relationship remains 100% yours; we never solicit or contact your clients.
- Agency-Safe Channels: We communicate through unbranded Slack/Teams channels or white-label email.
- Developer Augmentation: Senior developers writing and deploying the actual code fixes into Git.
- CRM & PM Integration: We work directly in Jira, Monday, ClickUp, Asana, or Basecamp.
- Structured Updates: Daily or alternate-day status reports to keep your account team in complete control.
- Strict NDA & Non-Compete: Legally binding confidentiality agreements executed before discovery.
Engineering Discipline
Six Core Principles of
Six Core Principles of
Technical SEO Engineering.
Every technical optimization is built for search engine efficiency, Core Web Vitals speed, and seamless editorial maintainability.
Principle 01
Code-Level Implementation
We fix issues directly at the source code layer (Liquid, PHP, React, Next.js) rather than applying temporary plugin patches.
Principle 02
Sub-800ms Core Web Vitals
Speed is an organic ranking factor. We engineer sub-800ms LCP, 0.00 CLS, and low INP scores natively on mobile and desktop.
Principle 03
Crawl Budget Efficiency
Eliminating crawl traps, endless faceted URLs, and redirect chains to ensure search spiders spend budget solely on high-margin pages.
Principle 04
Connected Entity Graphing
Building rich, interconnected JSON-LD schemas that clearly establish your brand, products, and author entities for search engines and AI.
Principle 05
Zero-Downtime Migrations
Thorough 1-to-1 301 URL redirect maps, staging QA, and metadata preservation to guarantee zero traffic loss during platform transitions.
Principle 06
Continuous Technical QA
Every release is validated using our 4-tier Technical QA Framework across real iOS/Android devices and search console validators.
Supported Technical Stack
The Technical SEO Stack We Work With
We utilize enterprise diagnostic tooling, search console APIs, and core platform code architectures.
Shopify Liquid
Shopify Plus
WordPress & WooCommerce
Headless Next.js
WPGraphQL & REST APIs
Google Search Console
Screaming Frog SEO Spider
Sitebulb Log Analyzer
JSON-LD Schema Graphs
Core Web Vitals APIs
Cloudflare WAF & Workers
Redis Object Cache
Ahrefs & SEMrush
Verified Delivery Evidence
Real Technical SEO Work.
Real Technical SEO Work.
Delivered for Real Businesses.
Verified technical SEO engineering outcomes delivered directly for brand owners or quietly through our agency partner program. View more proof in our Case Studies.
Direct Client Project
Sarla Sarees
Shopify Liquid codebase refactoring and Core Web Vitals speed optimization. Eliminated heavy app bloat, deferred JavaScript payloads, implemented custom product canonical logic, and achieved sub-second LCP scores with 100% Core Web Vitals pass rates.
Agency Delivery Project
Charles Fish Luxury Jewellers
Shopify Plus collection faceted search restructuring delivered through an agency partner. Cleaned up parameterized crawl waste, consolidated duplicate variant URLs, and deployed a nested JSON-LD product schema graph across thousands of luxury SKUs.
Direct Client Project
Global Tech SaaS
Multi-region Next.js & Headless WordPress technical SEO architecture. Deployed WPML hreflang multi-language routing across 3 international markets, warning-free schema graphs, and sub-500ms global static page rendering on Vercel.
Have a technical SEO challenge or migration brief? Discuss your project with our technical specialists or explore our full library of case studies & delivery results.
Dual Audience Model
One Technical Partner.
One Technical Partner.
Two Ways to Work.
Whether you are an ambitious ecommerce brand looking to scale organic revenue or an agency needing an engineering delivery bench, Zest adapts to your structure.
For Ecommerce Brands
- Comprehensive Technical SEO Audits
- Shopify & Shopify Plus Code Refactoring
- Core Web Vitals & Sub-800ms Speed Fixes
- Zero-Loss CMS & Website Redesign Migrations
- Nested JSON-LD Schema & Entity Graphs
- Indexing Bloat & Crawl Trap Elimination
- Monthly Technical SEO Maintenance Retainers
For Digital & SEO Agencies
- White-Label Technical SEO Fulfillment
- Liquid, PHP & Next.js Developer Execution
- Client Technical Audit Sprints
- Pre-Launch Staging QA & Migration Assurance
- Dedicated Senior Developer Augmentation
- Unbranded Technical SOPs & PR Handoffs
- Strict Mutual NDA & Non-Compete Protection
Frequently Asked Questions
Frequently Asked Questions
Frequently Asked Questions
About Technical SEO Services.
Direct, factual answers regarding our code-level implementation, Shopify SEO capabilities, Core Web Vitals optimization, and white-label agency partnerships.
Our technical SEO audit conducts a comprehensive root-cause analysis: crawlability, indexation waste, duplicate content, canonical tag logic, XML sitemaps, robots.txt configuration, Core Web Vitals (LCP, CLS, INP), structured data validation, faceted navigation handling, internal linking siloing, and platform-specific code bottlenecks.
Yes. We specialize in code-level Shopify and Shopify Plus SEO, including Liquid theme template optimization, collection canonical handling, tag/vendor URL management, app script deferral, sitemap structuring, and structured schema graph embedding. Explore our Shopify Development Services.
Yes. Unlike consulting-only SEO agencies that only deliver PDF recommendations, Zest is an engineering firm with 18+ senior developers who write, test, and deploy the actual Liquid, PHP, Next.js, and JavaScript fixes directly into your repository.
Yes. We regularly optimize live Shopify and Shopify Plus stores without disrupting checkout flows, daily operations, or active advertising campaigns.
We optimize Core Web Vitals (LCP, CLS, INP) at the code level: deferring non-critical JavaScript, eliminating render-blocking CSS, modernizing image assets (WebP/AVIF), streamlining Liquid/PHP queries, and reducing DOM nodes without relying on surface-level speed overlay plugins.
Yes. We analyze server logs and Search Console crawl data to identify crawl traps, pagination bloat, and faceted parameter loops, implementing robots directives, canonical consolidation, and noindex headers to focus crawl budget exclusively on revenue pages.
Yes. We provide complete SEO migration assurance: pre-launch URL mapping, 1-to-1 301 redirect architecture, metadata preservation, staging environment QA, and post-launch DNS monitoring to prevent traffic loss.
Yes. We engineer warning-free, connected JSON-LD @graph schemas for Product, Offer, AggregateRating, Organization, BreadcrumbList, FAQPage, Article, and CollectionPage entities aligned with Google Rich Results and AI citation standards.
Yes. We frequently act as the dedicated technical execution partner for in-house SEO and marketing teams who have strategic recommendations but lack the internal engineering bandwidth to implement them.
Yes. We offer monthly retainers covering continuous technical health monitoring, Core Web Vitals protection, log analysis, new feature SEO reviews, and dedicated monthly development hours.
Yes. Digital, creative, and SEO agencies partner with Zest as their silent white-label technical SEO fulfillment bench, delivering audits, PRs, and client reports completely unbranded under 100% NDA. Learn more about our Agency Partner Program.
No. In white-label agency partnerships, our operations are 100% silent. Your agency maintains complete client ownership and communication.
Yes. We execute strict mutual non-disclosure and non-compete agreements prior to repository access, discovery calls, or data sharing.
Yes. We support digital agencies across the UK, Australia, UAE, South Africa, Singapore, and the US with daily communication and timezone alignment.
Yes. We build connected entity schema graphs, concise factual answer blocks, structured specification tables, and clean HTML hierarchies engineered to be directly cited by Google AI Overviews, ChatGPT, Gemini, and Perplexity. See our AI Commerce Readiness Framework.
Yes. We provide clear, developer-verified reports showing exact code changes deployed, pull requests merged, Core Web Vitals score progression, and indexation health metrics.
Yes. We provide rapid diagnostic and recovery support for critical search index drops, accidental noindex sitewide tags, broken redirect loops, and malware infections. Contact us immediately at our contact page.
Technical SEO Services
Ready to Fix Your
Ready to Fix Your
Technical SEO Layer?
Tell us about your store or client project. Our senior engineers will diagnose your technical bottlenecks, outline an implementation roadmap, and define the next step.