Do you build on Shopify, Zoho Commerce, or custom Next.js?

I work with custom Next.js headless storefronts as well as customized Zoho Commerce themes, depending on whether you need maximum speed, specific CRM integration, or an established e-commerce platform.

Can customer orders automatically generate invoices in accounting software?

Yes. I build automated webhook pipelines that generate tax-compliant invoices in Zoho Books or QuickBooks the instant payment is confirmed.

Home IndustriesE-commerce

Headless Storefronts · Pre-Order Engines · Inventory & Zoho Sync

E-commerce Solutions.

Engineering high-converting shopping experiences, time-slot delivery booking, custom pre-order portals, and automated fulfillment pipelines.

Consult on E-commerce View Case Studies

Sumer Kumar

E-Commerce Software Engineer

Remote Worldwide · USA · UK · UAE · India

Standard cookie-cutter e-commerce templates fall apart when your business has custom fulfillment workflows—like delivery scheduling, custom kitchen capacity limits, or B2B volume pricing. I engineer high-performing online storefronts that guide buyers seamlessly through checkout while synchronizing stock, payments, and invoices automatically.

+44%

Mobile Sales

Pre-Orders

-28%

Cart Drop

Planning a E-commerce platform or ERP migration?Discuss Technical Requirements

Strategic Focus & Challenges Solved

E-commerce Engineering

Whether running high-volume consumer pre-orders or wholesale repeat business, I build custom storefronts that convert visitors, eliminate kitchen/warehouse bottlenecks, and automate accounting.

Engineered mobile-first food pre-ordering portal with dynamic delivery date/time slot capacity checking.

Increased mobile checkout completion by +44% through streamlined 2-step checkout and transparent fees.

Created automated post-purchase invoice generation and instant SMS/WhatsApp confirmation notifications.

Customized Zoho Commerce theme and built automated inventory deduction pipelines using Deluge scripts.

Core Capabilities in E-commerce

Tailored system modules, data pipelines & operational interfaces

High-Conversion Storefronts & Checkout

Lightning-fast, mobile-first shopping experiences with frictionless checkout, cart drawers, and instant search.

Next.jsReact.jsTailwind CSSZoho CommerceStripeMobile-First UX

Capacity & Time-Slot Booking Engines

Interactive calendar pickers that enforce operational limits per delivery window, preventing kitchen or dispatch overwhelm.

Custom Date/Time PickersCapacity ThrottlingClient-Side ValidationReal-Time Availability

Order-to-Warehouse Fulfillment Sync

Automated order dispatching directly to kitchen prep stations or packing warehouses upon payment capture.

Zoho InventoryDeluge ScriptingREST WebhooksAutomated Packing SlipsPDF Generation

Cart Abandonment & Retention Workflows

Automated follow-ups, customer order history portals, and 1-click reordering for recurring purchasers.

Customer PortalsAutomated EmailersEvent TrackingConversion Rate Optimization (CRO)

E-commerce Project Execution

Five-step engineering framework from workflow mapping to zero-downtime rollout

Fulfillment & Checkout Architecture

Audit delivery logistics, capacity limits, payment methods, and customer purchase patterns.

01/05

Custom Storefront & UI Engineering

Design and code mobile-optimized product pages, custom slot pickers, and simplified 2-step checkout flows.

02/05

Payment Gateway & Webhook Setup

Integrate Stripe, Razorpay, or custom gateways with automated error handling and payment confirmation webhooks.

03/05

ERP, CRM & Warehouse Synchronization

Wire completed orders into Zoho Books for tax invoicing and Zoho Inventory for immediate stock decrement.

04/05

Speed Optimization & Analytics

Optimize image delivery, minimize JavaScript payload, setup conversion tracking, and launch with zero downtime.

05/05

Featured Case Studies

Production systems currently in active commercial operation

Artisan Bakery & Hospitality Chain

Food Ordering & Pre-Order Buyer Portal

+44% Mobile Conversion

Delivered a branded, mobile-first ordering storefront with dynamic delivery date/time slot selection, instant payment integration, and real-time order tracking.

Zoho CommerceJavaScriptTailwind CSSStripeDeluge

View Case Study

Explore Other Industries

Discover technical solutions across our other core industry specializations

E-commerce Software FAQs

Yes. I build custom calendar booking engines that check available capacity per slot in real time, locking out fully booked windows to prevent kitchen or fulfillment overload.

Ready to engineer your E-commerce platform?

Let's evaluate your workflows, schemas, and automation opportunities.

Contact Me All Industries