Mike Castro
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xswap

Payroll disbursement platform for SMEs (batch salary payments via GCash-like service)

About This Project

Orchestrated maintenance and deployment of a robust n-tier architecture with fail-safe mechanisms. Implemented PCI DSS-compliant security measures. Coordinated with stakeholders for investor relations and compliance with Banko Sentral ng Pilipinas regulations. Led the automation of compliance and internal operations. Oversaw company-wide and application security as the primary systems architect.

My Contributions

Lead Developer

Lindytech Inc.

Rapidly onboarded and began addressing critical infrastructure gaps

  • Picked up the application quickly, submitting first PR within 1-2 days
  • Identified that existing CTO was underperforming and volunteered to assume responsibilities
  • Served as primary systems architect overseeing company-wide and application security
  • Enforced coding standards and coordinated interdepartmental projects
  • Started addressing critical gaps: no servers, no security, no backups, no CI/CD

Interim CTO

Lindytech Inc.

Led complete transformation from development to production-ready fintech platform

  • Led engineering team of 9-12 developers as head of technology for a fintech startup processing millions of PHP in monthly transactions
  • Achieved full PCI DSS compliance and passed Banko Sentral ng Pilipinas (BSP) regulatory requirements
  • Identified and fixed critical database bug that was causing revenue loss, implementing safeguards to prevent recurrence
  • Deployed xswap payroll platform from development to production, establishing the infrastructure and release processes
  • Orchestrated maintenance and deployment of robust n-tier architecture with fail-safe mechanisms
  • Led automation of compliance reporting and internal operations
  • Introduced Laravel Forge for deployment automation
  • Added comprehensive test coverage to ensure platform stability
  • Coordinated penetration testing for security validation
  • Integrated Dragonpay financial processor as backbone of the application
  • Implemented proper backup and disaster recovery procedures

Project Details

Role: Lead → Interim CTOTeam: 7+ developers
Fintech/Regulated

Tech Stack

TypeScript

Built type-safe React frontend for fintech platform

PHP

Maintained n-tier architecture, fixed critical database bugs causing revenue loss

Laravel

Built robust n-tier architecture with fail-safe mechanisms and PCI DSS security

React

Developed frontend for payroll disbursement platform

MySQL

Fixed critical database bug causing revenue loss and implemented safeguards

EC2

Deployed platform to production with fail-safe mechanisms and BSP regulatory compliance

Cloudflare

Configured security and CDN for fintech platform

Power BI

Built business analytics dashboards for internal operations

Dragonpay

Integrated payment gateway for payroll disbursements

PCI DSS

Achieved full PCI DSS compliance and passed BSP regulatory requirements