1. Enterprise B2B2C Gym & Fitness SaaS Platform with CMS, POS, Plugin Architecture, and Rollback Engine

Architected and operated a fully modular, PCI-DSS compliant SaaS platform for gyms and fitness centers, serving 40k+ end users over 12+ years with zero breaches. Delivered deep configurability, seamless WordPress integration, robust reservation and POS systems, and a self-healing schema engine with change rollback. Combined CMS, marketing automation, BI dashboards, and multi-location support into a single extensible stack—enabling smaller gyms to deliver enterprise-grade services without needing an in-house tech team.

*Reservation & Rental System: Position-level reservations for group classes, equipment rentals, and facility scheduling across rooms, gyms, and orgs.

*POS with Barcode Support: Staff-operated sales system for physical and digital items with barcode scanning, kiosk mode, and order tracking.

*Built-in CMS & WP Plugin: Optional in-house CMS and isolated WordPress (incl. multisite) integration via API for seamless gym website deployments.

*Payment & Messaging Integrations: Support for Stripe, PayPal, BoA, Dwolla, Authorize.net, Converge, plus Mailchimp, Constant Contact, SMS gateways.

*Custom BI & KPIs: Admin dashboards with CLV, churn, sales, and staff performance metrics; historical comparisons and customizable reports. *User Role Engine: Granular, field-level access control; multi-tiered roles (owner, admin, staff, member); audit logging and session metrics.

*Undo & Schema Diff Engine: ACID-compliant rollback of multi-table actions; smart diff-based migrations for self-hosted and SaaS deployments. *Security & Compliance: PCI-DSS encryption, IP-restricted access, SQL injection protection, prepared statements, and brute force detection.

*Self-Updating Architecture: Secure update system for both SaaS and self-hosted deployments with logic-based schema and feature delivery. *Marketing & Surveys: Event-triggered custom email campaigns, customer surveys, birthday greetings, and reservation follow-ups.

2. Ipitomy IP PBX – Auto Discovery & Zero-Touch Provisioning for IP Phones – Core Feature Still Used Post Clarion Acquisition

Sole creator of the Ipitomy Auto Discovery system, enabling VoIP resellers and IT admins to instantly locate, configure, and manage VoIP phones and PBX devices across a local network—even with zero prior knowledge of the environment. Still in use today as part of the Ipitomy IP PBX suite, now owned by Clarion

*Communications (acquired Oct 2024), the tool remains a core value driver in multi-location SMB deployments. *Developed a zero-configuration network scanning engine to detect VoIP phones, PBX hardware, and rogue SIP devices without manual input

*Enabled both interactive multi-device setup and batch provisioning via CSV upload (e.g., pre-defined phone-to-extension mappings)

*Included visual status indicators, remote reboot and configuration, and optional security lockdowns to prevent unauthorized provisioning

*Played a critical role in trade show demos and reseller onboarding—described as one of the most impressive features by partner feedback

*Created full documentation and embedded help to support global deployment by non-technical staff

*Became a cornerstone feature for Ipitomy’s product differentiation in the IP PBX market, helping grow their VAR network and MSP appeal Technical & Business Value: This feature drastically reduced deployment time, minimized configuration errors, and enabled enterprise clients and managed service providers to scale VoIP deployments reliably. It helped Ipitomy stand out in the competitive VoIP space, earning adoption through user-friendliness and productivity. When Clarion Communications acquired Ipitomy on October 16, 2024, the platform’s Auto Discovery capability was explicitly retained and remains a cornerstone feature across the combined UC portfolio.

3. RevContent Native Ads Referral Program – Scalable, Auditable “Give 5%, Get 5%” Commission Engine

Sole architect and product lead of RevContent’s industry-first “give 5%, get 5%” referral program for native advertising publishers. Designed and implemented the full system using object-oriented PHP (CodeIgniter), Redis, JS/jQuery, and Bootstrap, during Revcontent’s post-acquisition innovation push. Collaborated across Legal, Accounting, Sales, Business Ops, and QA.

*Created secure, persistent referral codes and cookie-based signup tracking across the native ad platform

*Automated monthly commission calculations via SQL views + sandboxed results for accounting pre-approval *Designed ACID-safe flows with rollback, audit trails, delay timers, and review safeguards

*Enabled Excel + API access for accounting team; no more manual reconciliation for referrals

*Supported custom commission tiers, time limits, and override options via self-service admin panel

*Collaborated across Legal, Sales, Business Ops, QA, and Accounting

*Launched in ~3 months, enabling self-service referrals and scaling beyond 1-off contracts

*Rolled out as part of RevContent’s twice-monthly innovation cadence following the Rover acquisition *Helped cement referral incentives as a strategic growth lever during RevContent’s $183M revenue year (2017)

4. Custom MySQL Driver for Memory Control

Custom MySQL driver that solved critical performance and memory issues in legacy systems by enabling transparent streaming and batching of large datasets, all without codebase rewrites. Pages that once failed to load were restored and rendered up to 30x faster, unlocking scalability and stability for a $200M business.

*Designed a SQL query analyzer that intelligently split large queries into parallel batches, controlling memory usage by streaming partial result sets instead of loading all data at once

*Developed a transparent PHP ArrayAccess wrapper that allowed legacy code to interact seamlessly with streamed database results, supporting full array modification and on-demand data retrieval *

Achieved page load speed improvements from 30+ seconds down to under 1 second, while eliminating out-of-memory failures on publisher dashboards

*Enabled higher concurrency and reduced server memory footprint, allowing more users to access real-time ad performance data simultaneously Delivered the solution solo after architectural review; integrated into production and maintained for 3+ years until company migration

*Overcame challenges in session consistency, array index mapping, and full PHP array function compatibility to ensure flawless legacy compatibility

*Rare combination in the world of db abstraction/access projects: fully transparent, drop-in MySQL solution that combines batching, streaming, session consistency, memory control, and mutable array support… all without rewrites

5. Microservices Platform – Custom Highly Scalable with Federated GraphQL & Multi-DB Orchestration

I hadn’t worked seriously with Python before, but I had deep low-level systems experience. When a client set out to build something Amazon-like, I realized off-the-shelf monoliths wouldn’t scale. I researched modern architecture patterns like microservices, GraphQL federation, service isolation and then built a scalable backend engine with built-in IPC, schema migrations, and observability, integrating with Saleor on the frontend. Delivered the custom microservices engine in ~2 months. Although the startup didn’t ship due to funding issues, the backend was production-ready and designed for rapid, modular feature development.

* Built a bespoke microservices framework using Gunicorn, IPC, Kafka, and Docker, with built-in DB abstraction and schema migration tooling

* Architected Apollo Federation GraphQL layer across isolated services to enable scalable, unified API access

* Designed and deployed Nginx load balancing and private network segmentation for high-availability multi-database infrastructure (Postgres, Redis)

6. Acid-Aware SQL Auditing Engine for Tracking Write Activity at the Field Level With Zero App Code Changes

ACID-aware auditing engine for tracking SQL write activity at the field level with zero app code changes. Built a database-layer auditing system to log and attribute SQL write operations (INSERT/UPDATE/DELETE) to individual users, including the exact fields modified. Integrated at the driver level for full transparency, honoring transactional boundaries and requiring no changes to business logic. Designed for high-throughput environments where compliance and traceability were essential.

*SQL-Level Field Tracking – Logged precise table and field modifications from all write operations, without relying on ORM or app-layer instrumentation.

*Transaction-Aware – Understood ACID semantics, logging only committed writes, with rollback detection.

*Insert Row Index Recovery – Captured auto-incremented IDs from inserts without issuing extra queries.

*Seamless Integration – Hooked into existing legacy systems using CodeIgniter with zero disruption to app code.

*Auditable Change Trails – Produced structured logs suitable for security review, compliance reporting, or internal diagnostics.

*Resilient Under DB Variation – Accounted for varying DB parameter configs to ensure consistent behavior.