Custom WordPress Plugin Development | OmiSystems
WordPress Development

Custom Plugin Development

When off-the-shelf plugins create more problems than they solve, we build exactly what your business needs. Clean code, proper documentation, and built to work with your existing setup.

When Custom Development Makes Sense

Not every problem needs custom code. But when your business has requirements that no existing plugin handles well, bespoke development saves you from endless workarounds and plugin conflicts.

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Nothing Fits Quite Right

You’ve tried five different plugins. They’re either missing critical features, bloated with things you don’t need, or break something else on your site.

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Unique Business Logic

Your pricing structure, approval workflows, or order processes are specific to how your business operates. Generic plugins force you to change how you work.

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Third-Party Integration Needed

You need WordPress to talk to your ERP, accounting software, or a South African service that doesn’t have existing WooCommerce integration.

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Performance Problems

Your current plugin stack is slow and bloated. A purpose-built solution does exactly what you need without the overhead of features you’ll never use.

Plugins We’ve Built for SA Businesses

Every business is different. Here’s a sampling of custom plugins we’ve developed for South African e-commerce stores and service businesses.

local_shippingSA Courier Integration

Real-time rates from Courier Guy, Pargo, and Dawn Wing in WooCommerce checkout. Automatic waybill generation and tracking number updates to customers.

inventoryERP Stock Sync

Two-way inventory sync between WooCommerce and Sage 200. Stock levels update every 15 minutes. Orders flow back to the ERP automatically.

sellWholesale Pricing Engine

Tiered pricing based on customer group, order quantity, and purchase history. Different discount rules per product category with minimum order enforcement.

receipt_longSARS Invoice Generator

Automatic VAT invoice generation meeting SARS requirements. Sequential numbering, proper formatting, and PDF delivery with every order confirmation.

approvalB2B Order Approval

Multi-step workflow for corporate orders. Purchase order submission, manager approval via email, credit limit checks, and custom notifications at each stage.

storefrontTakealot Sync

Push products from WooCommerce to Takealot marketplace, pull orders back down, and keep inventory synchronized across both sales channels.

How We Work

Plugin development isn’t just about writing code. It’s about understanding your problem well enough to build the right solution—not just a solution.

1

Discovery

We dig into your requirements until we understand what you actually need—not just what you think you need. Often this reveals simpler approaches.

2

Specification

A detailed document describing exactly what the plugin will do, how it will work, and what it won’t do. You approve this before we write any code.

3

Development

We build in iterations, showing you working versions along the way. You can test and provide feedback before we’ve built too far in the wrong direction.

4

Launch & Handover

Thorough testing on staging, then production deployment. Full documentation and training so your team knows how it works.

Investment Guide

Custom plugin costs depend entirely on complexity. A simple integration might be R15,000, while a complex multi-system solution could be R150,000+. We always provide a fixed quote before starting, so you know exactly what you’re paying. Here’s a rough guide based on typical projects:

Simple Integration

Connect two systems, basic data sync, straightforward logic

R15,000 – R35,000

Custom Functionality

New features, workflow automation, moderate complexity

R35,000 – R75,000

Complex System

Multi-system integration, complex business logic, extensive testing

R75,000 – R150,000+

Ongoing Maintenance

Updates for WordPress compatibility, bug fixes, minor enhancements

From R2,500/mo

Built to WordPress Standards

Our plugins follow WordPress coding standards and best practices. Clean, well-documented code that other developers can maintain—and that won’t break when WordPress updates.

WordPress Coding Standards
PHP 8.x Compatible
WooCommerce HPOS Ready
REST API Architecture
Proper Hooks & Filters
Multisite Compatible
Translation Ready
Full Documentation

Have a Plugin Project in Mind?

Tell us what you’re trying to accomplish. We’ll let you know if custom development is the right approach—or if there’s an existing solution that would actually work better.

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