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Mighty Kids – A Case Study in Scalable eCommerce Performance and Intelligent Customization
When a rapidly growing DTC brand pushes the boundaries of its infrastructure, intelligent engineering becomes the key to sustainable growth at scale. As pioneers of liposomal supplements for children, Mighty Kids understood that any changes had to come with precision, reliability, and a seamless customer experience.
To meet these challenges, they partnered with Progressus.io for targeted WooCommerce development, extending functionality, removing bottlenecks, and laying a stable foundation for continued expansion into the EU and US markets.
The Brief
Founded in 2023, Mighty Kids experienced rapid adoption as one of the first UK companies producing liposomal supplements designed specifically for children. With thousands of active subscriptions and increasing order volume, the existing WooCommerce infrastructure began to struggle. The site was crashing nearly every day during peak traffic periods, with uptime struggling to keep pace.
Legacy order storage created severe performance bottlenecks, leading to slow average page loads and checkout completion times that could stretch past two minutes. Operational processes also required improvement. Refund and cancellation handling relied heavily on manual intervention, with each refund taking a significant amount of time to process, while promotional campaigns demanded more flexible pricing logic and bundling capabilities. The support team also lacked a clear system for tracking refunds, requests, and operational events.
Mighty Kids needed a faster, more reliable storefront that could support continued growth while maintaining a clear and trustworthy customer experience.
Summary
We seamlessly extended Mighty Kids’ WooCommerce platform with performance-focused custom modules, operational automations, and strategic promotional capabilities. The result is a high-growth digital infrastructure built for clarity, resilience, and expansion.
Market
Health, Nutrition, eCommerce
Technology
- PHP
- JavaScript
- React
- Node
- SQL
- Composer
- Webpack
- HTML
- CSS
- SASS
- Docker
- AJAX
- JSON
Services
- Custom Plugin Development
- WooCommerce HPOS Migration
- Backend & API Development
- Frontend Optimization
- System Integration
Visit
The Approach
Progressus.io engaged in along-term collaboration, focused on targeted feature development and performance stabilization. Rather than broad redesign, the objective was surgical improvement, optimizing specific operational layers while preserving the brand’s existing identity and structure.
1. Performance and Data Infrastructure
WooCommerce High-Performance Order Storage (HPOS) replaced legacy order tables. This migration removed major database bottlenecks and accelerated order processing speed by 3x, from 6 seconds per order down to 2.1 seconds. The transition was completed without downtime, and database query speeds for order operations improved by 4.5x, dropping from 1.8 seconds to 400 milliseconds.
2. Checkout and Customer Experience
Checkout fields were reorganized for clarity and improved usability. Product variations were redesigned with one-click selection options, making product configuration faster and more intuitive. Average page load time was significantly improved.
An address confirmation system was also introduced, allowing customers to verify shipping information before fulfillment and drastically reducing delivery errors.
3. Refunds and Cancellations
A custom refund and cancellation system automated previously manual workflows. The system evaluates order status and fulfillment data before processing refunds and records each action for internal tracking. Refund processing is now 4x faster, dropping from 25 minutes to 6 minutes per transaction, reducing support workload while improving transparency for both staff and customers.
4. Promotions and Bundling
Flexible promotional tools were developed to support bundles, upsells, and tiered discount campaigns. These systems ensured consistent pricing behavior across product pages, carts, and checkout while reducing campaign setup time from hours to minutes, allowing the marketing team to run complex campaigns without technical intervention.
5. Tagging and Reporting Platform
Two extensible tagging systems were developed: Order Tags and Customer Tags, providing a structured way to classify and track operational data. REST APIs exposed tag information for use by external systems, including integration with Zendesk through custom-built endpoints. This supported the client’s customer service automation and improved refund tracking.
6. Infrastructure and Scaling
The site transitioned from SiteGround hosting to BigScoots, enhancing server performance and reliability. All new plugins and modules were verified for HPOS and Subscriptions compatibility, ensuring future-proof operation.
Throughout the engagement, Progressus maintained alignment with Mighty Kids internal workflows, delivering iterative updates, bug fixes, and production-grade customizations without disruption.
The Results
The collaboration yielded a measurable transformation in operational stability, scalability, and customer experience.
Performance Growth (2025 vs. 2024)
Since the engagement began, the client has seen their revenue triple, driven by massive growth in orders and product sales.
3x Faster Order Processing
From 6 seconds to 2.1 seconds per order
147% Conversion Increase
From optimized campaigns
99.9% Site Uptime
Daily compleatly crashes eliminated
4.5x Faster Database
Order operations: 1.8 seconds to 0.4 seconds
4x Faster Refunds
Processing time: from 25 minutes to 6 minutes
The team at Progressus have been phenomenal! They’ve totally transformed our business and permanently increased our profitability. When we found them, our WordPress website had become very slow and unstable, while we were trying to scale up faster than we could handle. The combination of their experience, excellent communication, and collaborative problem solving was exactly what we needed. They made some very complex migrations to higher performance systems, developed several new features to improve our UX and support our internal operations, and swiftly dealt with any signs of trouble as they arose.
At first their prices seemed high, but I came to realize that developers really do have the power to make or break e-commerce businesses very quickly, and I’ll always consider the investment we made to be money very well spent. Since we began working with Progresses our revenue has tripled, and our website that used to be the cause of sleepless nights is now on very solid ground. Thank you guys for all the great work, it’s been an absolute pleasure!
James, Mighty Kids