ECWEBUK
No. 002 / Custom buildsCambridge · UK
✦ Services

Pragmatic Shopify
engineering,
by the person doing it.

EC Web is a founder-led Shopify development agency in Cambridge, building what off-the-shelf apps can’t. Every engagement is scoped, fixed-priced and shipped: no estimate ranges, no drip-fed proposals.

Start a project →

§ Service menu

A–D
A

Shopify apps

  • —Public-listing apps, with App Store approval handled
  • —Private / custom apps for a single merchant or group
  • —Checkout UI Extensions, Admin Blocks, POS extensions
  • —Shopify Functions for discounts, shipping, payment, delivery
  • —Webhooks, Admin + Storefront APIs, GraphQL schemas
B

Integrations & data

  • —Klaviyo, GA4, Meta Ads, Gorgias, Xero, TripleWhale, ERPs
  • —Webhooks, scheduled jobs, idempotent sync pipelines
  • —Auditable ETL: everything logged, retry-safe, backfills supported
  • —Nightly reconciliation reports you can actually trust
C

AI & MCP servers

  • —Custom MCP servers so Claude / ChatGPT / Gemini can query your store
  • —Read-only by default, fine-grained scopes, full audit trail
  • —Natural-language tooling for ops, support, growth teams
  • —Anthropic SDK, OpenAI, tool-use, prompt caching, all production-grade
D

Theme engineering

  • —Custom Liquid sections and OS 2.0 blocks
  • —Performance: Core Web Vitals, JS diet, server-rendering where it counts
  • —Metaobjects, metafields, structured content
  • —A/B tests that actually measure the right thing

◎ Go deeper

Dedicated pages

Shopify Plus development

Migrations, B2B, checkout extensions & Functions.

View →

Shopify theme development

Bespoke OS 2.0 themes, built performance-first.

View →

Shopify theme support

Retainers and pay-as-you-go for existing themes.

View →

Custom Shopify apps

Public and private apps, built and shipped.

View →

★ How it works

Four steps, no surprises
Day 0
01
Discovery

30 min call, no slides. We define the problem, not the solution.

Day 1–3
02
Fixed-scope proposal

Written proposal with a fixed price, timeline, and a clear 'definition of done'.

Week 1–6
03
Build

Weekly demo video, shared Linear/GitHub, direct Slack. You see progress daily if you want.

Ongoing
04
Launch & support

Deployed, monitored, documented. Optional retainer to keep it humming.

◎ Receipts

Four apps on the Shopify App Store
20+
data sources

Ask AI

AI-native data access

20+ connectors, MCP server for Claude / ChatGPT / Gemini, AES-256 encryption, read-only by default.

10
triggers

Behaviour Discount

Behaviour-triggered growth

10 behaviour triggers, abandoned-checkout recovery, magic links, QR codes. ★ 5.0.

€
DE checkout

Packstation PLUS

Checkout integration

DHL Location Finder API, Postnummer validation, tamper-proof address locking, bilingual UX.

→
real-time sync

VPress Sync

Fulfilment automation

Shopify orders mapped and sent to the VPress press floor in real time. ★ 5.0.

₤ Engagement

Discovery call
No slides, no obligation.
Free · 30 min
Weekend fix
One tightly-scoped problem. In-and-out in days.
from £3,500
Typical build
3–6 weeks · fixed price · weekly demos.
£8–25k
Extended build
Multi-month. Milestones billed on delivery.
£25k+
Retainer
Ongoing app maintenance, features, support.
from £2,000 / mo
⚠ Not a fit

I’ll say no if any of these are true.

  • —You want a team of ten behind a rebrand. I’m one person.
  • —The spec is “build me the next Klaviyo.” Size matters.
  • —You’ve already got a build underway that just needs a rescue. Go to a Shopify Expert partner with a rescue team.
  • —You want a vendor who says yes to everything. I’ll push back.

If in doubt, still email. I’d rather tell you “not me” than leave you guessing.

Got an idea? Let’s scope it.

Book a call →Email direct