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SazM Senior DaaS

Senior full-stack development on subscription

E-commerce Development & Optimization

Store features, checkout fixes and speed work for WooCommerce, Shopify, Magento, OpenCart and custom carts — from an engineer who has shipped and maintained dozens of production stores.

What you can queue

  • Checkout & payments — slow or failing checkout, payment gateway setup and debugging (Stripe, PayPal, Razorpay, Cashfree and others), multi-currency, tax and shipping rules.
  • Shopify & WooCommerce speed — eliminating third-party app bloat, optimizing Largest Contentful Paint (LCP) and Interaction to Next Paint (INP), building custom sections from scratch in Liquid/HTML without bloated page-builder apps. See Core Web Vitals remediation.
  • Speed & Core Web Vitals — catalog and product page load time, image and script weight, caching and CDN setup, database query tuning for large catalogs.
  • Catalog & data — bulk product and SKU imports, variant and attribute structure, search and filtering, feed exports.
  • Custom features — product personalization, B2B and volume pricing, subscriptions, custom order workflows, invoices and receipts.
  • Platform moves & upgrades — WooCommerce and PHP version upgrades, theme rebuilds, migrations between platforms without losing orders, customers or SEO.

Slow checkout?

The usual causes are synchronous calls to payment, tax or shipping APIs, plugin hooks running on every cart update, uncached fragments, and heavy third-party scripts. Each is measured before anything is changed, so the fix targets what's actually slow.

Past store work

Examples from the portfolio include custom product personalization and invoicing, high-volume Magento checkout processing, OpenCart speed work with multi-currency support, and bulk SKU imports with secure checkout flows.

How it works

  1. Subscribe — $999/month in USD through PayPal, with launch code SAZM50 applied. No contract; pause or cancel any month.
  2. Queue tasks in your client portal, in priority order. Unlimited requests; one active task at a time.
  3. Get the work — a 24–48 hour delivery target per task once work starts, written updates, no meetings. Code goes to your repository, and you own all of it.

Not sure yet? Run a free speed audit of your site first, or ask a question — no sales call.

Want a senior engineer on this?

SazM is a 20-year senior full-stack developer on subscription: one task at a time, a 24–48h delivery target per task, no meetings. $999/mo with launch code SAZM50 — pause or cancel any month.