Project Portfolio

Selected Examples

Enterprise B2B2C Gym & Fitness SaaS Platform

Modular, PCI-DSS compliant SaaS platform serving 40,000+ users over 12+ years with zero breaches

Architected a fully modular SaaS platform for gyms and fitness centers combining reservation, rental, POS, and CMS features into one extensible stack. Delivered seamless WordPress integration, multi-location support, and a self-healing schema engine with rollback capabilities. Enabled smaller gyms to offer enterprise-grade services without dedicated IT teams.

• Reservations across locations/resources, barcode-enabled POS, WordPress multisite integration
• Payment gateways (Authorize.Net, First Data, Converge, Stripe, PayPal, Dwolla), marketing automation, and custom BI dashboards
• Granular access controls, audit logging, ACID-compliant rollback, and automated secure updates

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Ipitomy IP PBX Auto Discovery & Zero-Touch Provisioning

Sole creator of a zero-configuration provisioning system still core to Ipitomy’s IP PBX suite

Architect and developer of the industry’s first network scanning and batch provisioning tool allowing VoIP resellers and admins to instantly discover and configure phones and PBX hardware. Features include remote reboot, status indicators, and security lockdowns, enabling scalable, reliable deployments.

• Reduced setup times and errors for SMB multi-location deployments
• Core feature retained after Clarion Communications acquisition in 2024

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RevContent Native Ads Referral Program

Designed and built a scalable, secure “Give 5%, Get 5%” commission engine

Led the full design and development of a referral platform automating tracking, commission calculations, and approval workflows. Collaborated cross-functionally with Legal, Accounting, Sales, and QA to launch within three months, driving revenue growth.

• Persistent referral codes, cookie tracking, sandboxed SQL calculations, and audit-safe rollbacks
• Self-service commission tiers and API/Excel accounting integration

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Travel Search Engine with Admin Pricing Control & Spreadsheet-Like Backend

Custom-built cruise search platform with Excel-style admin tooling and real-time pricing automation

A travel CEO engaged me to build a web-based cruise search engine capable of handling complex search criteria like departure port, destination, cabin size, cruise length, balcony availability, price tiers, and promotional offers. On the backend, I engineered a robust admin interface that allowed business staff to control pricing logic, normalize cruise line data, and manage markups—all without touching code.

• Smart Data Import: Parsed Excel files from major cruise lines, converting industry-specific codes and abbreviations into user-friendly terms via custom rule sets.
• Admin Spreadsheet UI: Built a responsive SPA that mimicked Excel—complete with formula-driven fields (e.g., O=N+K, Q=P-O) to automate pricing logic and flag missing or inconsistent data.
• Price & Visibility Controls: Enabled admins to set wholesale markups, apply blackout rules, and manage inventory exposure with fine-grained control.
• Search Normalization Engine: Created translation tables for destinations, port names, ship codes, and amenities, ensuring consistent search results regardless of source format.
• Real-Time Frontend Search: Built a fast, user-friendly search interface for consumers to filter cruise results by key criteria and see accurate, up-to-date pricing.

Business Impact:
Enabled non-technical staff to update inventory, pricing, and translations without engineering involvement—cutting turnaround times and increasing sales accuracy. Delivered a custom product that aligned precisely with the founder’s vision and operational workflow.

Custom MySQL Driver for Memory Control

Engineered a transparent streaming MySQL driver that cut page load times by 30×

Designed a query analyzer and PHP array wrapper to batch and stream large datasets without code changes. Eliminated out-of-memory errors and increased concurrency for a $200M business’s publisher dashboards.

• Fully backward compatible with legacy code
• Maintained in production for 3+ years post-deployment

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Custom Microservices Platform with Federated GraphQL

Built a scalable microservices backend with GraphQL federation and multi-database orchestration

Developed a Python-based microservices framework with IPC, Kafka, and Docker, featuring Apollo Federation for unified API access. Designed high-availability infrastructure supporting rapid, modular feature development.

• Delivered production-ready backend in 2 months
• Architected for scalability and service isolation

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ACID-Aware SQL Auditing Engine

Developed a zero-impact, database-layer auditing system for precise field-level SQL write tracking

Built a driver-level auditing engine logging user-attributed SQL changes with full ACID compliance. Produced structured logs for compliance and security without requiring application code changes.

• Seamlessly integrated with legacy CodeIgniter systems
• Supports high-throughput environments with rollback detection

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Unified Cross-Platform Mobile Apps (React Native & Flutter)

Consolidated fragmented native apps into a single, reusable codebase

Led mobile architecture and development for iOS and Android apps, integrating push notifications, offline caching, and OAuth2 authentication. Mentored junior developers and coordinated with product and design teams.

• Achieved 30% faster development cycles and ~40% cost savings
• Improved app store ratings by 1.2 stars

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CI/CD Automation and Cloud Deployment

Modernized deployment pipelines to accelerate release cadence and reliability

Built containerized CI/CD pipelines with Docker, Jenkins, Kubernetes, and GitHub Actions. Introduced zero-downtime rollouts, automated security scans, rollback mechanisms, and staging environments.

• Reduced deployment times from hours to under 10 minutes
• Increased deployment frequency by 4×

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Frontend Modernization Across Multiple Web Apps

Unified UI/UX across seven legacy applications with modern frameworks

Led migration from AngularJS/jQuery to Vue 3, React 18, and Angular 14, implementing a shared component library with accessibility (WCAG 2.1) and lazy-loading improvements. Coordinated closely with UX, backend, and business teams.

• Improved page load times by 40% and enhanced UX consistency
• Enabled future-proof, low-risk frontend evolution

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Microservices Migration of Legacy Monolith

Transformed a monolithic PHP platform into modular microservices

Led design and implementation of scalable services with Node.js, Flask, RabbitMQ, and Redis. Introduced a central authentication gateway and blue-green deployment strategy, achieving high availability.

• Increased uptime to 99.9% and reduced error rates
• Enabled independent deployments and domain-driven team autonomy

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Real-Time Telemetry & Embedded Systems Integration

Built secure, real-time IoT data ingestion and monitoring platform

Developed Flask and MQTT-based backend with WebSocket dashboards in React. Implemented buffering, retry logic, IP whitelisting, and encryption to ensure reliability and security.

• Reduced diagnostics time by 60%, maintained <500ms latency
• Achieved 99.95% system uptime with real-time alerts