Custom WordPress Membership Platform Build for 8,000+ Members

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Client

Professional Trade Association (White-Label — Agency Partner)

Timeline

24 Weeks

Scope

Custom Plugin Development, Headless WordPress, API Integration, Security Hardening

Stack

Membership platform processing 1,200+ renewals/month with 99.95% uptime SLA

The Challenge

A professional trade association with over 8,000 members needed to replace its decade-old membership management system. The new system had to accommodate tiered membership levels, gated content access, CPD tracking, automated renewal billing via Stripe, and a members-only directory, all while ensuring strict data privacy standards for members’ personally identifiable information (PII).

The agency commissioned to deliver the project had strong design capabilities but lacked the necessary experience in WordPress architecture to handle this level of complexity. As a result, HackProofWP was engaged as the white-label technical lead for the project.

Our Approach

Custom Plugin Development
A bespoke membership management plugin was built to handle tiered access, CPD point tracking, automated renewal reminders, and member directory functionality.
Stripe Integration
Custom Stripe integration supporting subscription management, prorated upgrades, failed payment retry logic, and invoice delivery.
Security Architecture
Member PII encrypted at rest, admin access restricted by IP allowlist + 2FA, and a custom audit log for GDPR compliance reporting.
Performance at Scale
Transient caching for the member directory, Redis for session management, and CDN for static assets.

The Challenge

8,000+ Member
Platform launched on schedule, migrating 8,000+ member records without data loss
1,200+ membership renewals
Processing 1,200+ membership renewals per month with zero payment failures
99.95% Uptime
99.95% uptime maintained across 14 months of operation
Zero Findings
GDPR audit completed with zero findings against the platform's data handling
$96,000 Value
Agency secured a 3-year maintenance contract valued at $96,000