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Manoj Priyamantha

Senior Shopify Developer | Frontend Engineer | Liquid · React · JavaScript · TypeScript | DTC E-commerce Specialist | London

Location:London, England, United Kingdom (London, United Kingdom)
Timezone:Europe/London
Experience:7 Years
Direct Rate
$45–$95/ hour (USD)
Available for Projects

No middleman platform markups. Direct contact.

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About & Engineering Approach

Senior Shopify Plus and Frontend engineer in London with 7+ years of commercial experience in DTC e-commerce. As lead developer at Komar (USA), independently owned the architecture and codebase of 9 profitable Shopify Plus stores for well-known brands (CuddlDuds, Le Mystère, Bedhead PJs, and others). Specializes in custom Liquid theme development, product page (PDP) conversion optimization, Core Web Vitals load-speed improvements, A/B testing, and third-party service integrations (Klaviyo, Make/n8n automations).

Core Technologies & Competencies

Primary Specializations

Shopify

All Technologies & Tools

Shopify
Shopify Plus
Liquid
Sections
Blocks
And Snippets
JavaScript
TypeScript
React
Html5
Css Scss
Storefront Api
Optimization Core Web Vitals
Cro
Conversion Rate Optimization
Klaviyo
Rest Graphql Apis
Make
N8n

Commercial Experience

Freelance Shopify Developer & Frontend Engineer @ Self-employed

2024-01-01 — Present

Development of custom sections for Shopify Plus brands, implementation of A/B tests, technical performance audits.

Senior Shopify Plus Developer @ Komar (Full-time)

2021-09-01 — 2024-01-01

Sole Shopify Plus engineer for a 9-brand portfolio: custom themes, dynamic checkouts, advanced cart features (quick buy, sticky cart).

Selected Portfolio & Deliverables

E-commerceFashion Retail

Cuddl Duds PDP Conversion

Rebuilt the product page on Shopify Plus for an apparel brand: custom Liquid sections, sticky cart and quick buy. Conversion up 18%, LCP down from 3.8s to 1.9s.

shopify-plus
liquid
javascript
klaviyo
E-commerceFashion Retail

Bedhead PJs Speed Audit

Audited Core Web Vitals for 9 Komar stores, optimized themes, images, and Klaviyo scripts. Average PageSpeed rose from 52 to 91, bounce rate down 22%.

shopify-plus
liquid
typescript
storefront-api
E-commerceFashion Retail

Le Mystere Checkout Flow

Implemented dynamic checkout and PDP A/B tests for a lingerie brand. The test variant drove +12% add-to-carts, and Klaviyo integration lifted repeat purchases 15%.

shopify-plus
react
liquid
make

Vetting Standards

Verified
Identity & Commercial Track RecordVerified past employment and client references.
Code
Code & Architecture AuditAssessed on production code standards and type safety.
Security
Direct Contract SupportNo platform lock-in. Work directly with clear terms.

Languages

Verified Links

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