Hey there. I'mIan Fleming.

j a v a s c r i p t _ e n g i n e e r

a picture of Ian

What I do

E-commerce Systems:

Shopify (Liquid, APIs, Extensions)
Cart integrations & checkout optimisation
Multi-platform coordination
International deployment

Integration & Architecture:

Event-driven systems
GraphQL & REST APIs
Multi-platform coordination
Real-time synchronisation

Modern Stack:

Next.js & React applications
TypeScript
AI/ML integration (RAG, OpenAI)
Full-stack deployment

My Work

My Work

Production Systems

Cart Discount Coordination Engine

Deployed across 6 storefronts

Customers were seeing one price in the cart and a different one at checkout — a trust-eroding problem generating recurring support tickets. Built an event-driven coordination layer that detects active discount modes across Shopify, Rebuy Smart Cart, and manual input, calculating accurate prices in real time. 12+ months production stability, zero critical incidents, eliminated pricing discrepancy complaints entirely.

JavaScript · Event-Driven Architecture · DOM APIs · Shopify · Rebuy · Multi-platform Integration

Case Study Technical Docs Client code private

Development Projects

FounderVoice AI

AI/ML

RAG-powered content generation tool. Train the system on at least 100,000 words of existing writing and it generates new content grounded in that voice — using retrieval-augmented generation to pull relevant stylistic examples rather than relying on the base model alone.

Next.js · TypeScript · OpenAI API · Pinecone · RAG Architecture

GitHub Documentation

Tried & Tweaked

Full-Stack

Family recipe management application built for real use. Features intelligent ingredient scaling that parses and converts quantities while preserving qualitative measurements, image upload, tag-based search with AND logic, and comprehensive test coverage (Vitest unit tests + Playwright E2E).

Next.js · TypeScript · PostgreSQL · Tailwind CSS · Vitest · Playwright

GitHub Live Demo

Who am I?

Javascript engineer building for international e-commerce

I build integration systems that make independent platforms behave as one — the kind of problems where three services disagree on a price, or a discount works in the cart but breaks at checkout. Two years of production experience across international e-commerce, with a focus on reliability when the edge cases arrive.

Before development I spent years in intellectual property administration and management — work that was fundamentally about precision, deadlines, and getting complex processes right first time. That instinct carried over.

When not building coordination systems or debugging cart logic, I make electronic music, run, play guitar, cry about how terrible West Ham are, read obsessively, and spend time with my family in Munich.

Ian and Gemma cuddling