Engineering Mission-Critical AI Systems & Private Custom ML Containers.
15+ years commanding fault-tolerant enterprise systems and private machine learning architectures. Former Engineering Team Lead at Legiit (scaled core marketplace and AI Command Center to $1M ARR across 400K+ users). Specializing in 4-bit LoRA private cloud containers, sub-50ms execution, zero third-party data leaks, and Securiti certified AI governance.
High-concurrency marketplace architecture powering Legiit with 1M+ orders.
Intelligent business scoring & matching across 1,500+ locations in 40+ countries.
Autonomous swarms, governed RAG pipelines, multimodal vision & enterprise quoting.
15+ years of enterprise systems engineering. Guaranteed milestone delivery.
Production AI Architectures.
Interactive Systems Cockpit.
Browse 50+ verified live applications spanning autonomous agent swarms, governed RAG pipelines, computer vision estimators, and financial state machines with deterministic zero-drift boundaries.
RegulaTrace Core: Private 4-Bit LoRA Container & PostGIS Regulatory Cockpit
Defensible statutory audit engine with 4-bit LoRA private containers, 14.2ms PostGIS spatial buffer joins, and zero third-party data egress.
Runs 4-bit quantized LoRA adapters inside isolated Docker/vLLM containers ensuring zero sensitive numbers leak to public third-party APIs. Spatial parcel calculations execute deterministically in PostgreSQL with GiST spatial indexes (ST_DWithin) in under 15ms.
RegulaTrace Core: Private 4-Bit LoRA Container & PostGIS Regulatory Cockpit
Defensible statutory audit engine with 4-bit LoRA private containers, 14.2ms PostGIS spatial buffer joins, and zero third-party data egress.
FitTech Core - Backend Stabilization, Video CDN & 100K Scale Engine
Production backend stabilization engine with sub-50ms HLS video streaming, OpenAI workout fallback circuit breakers, and Apple StoreKit 2 IAP sync.
Twilio Voice Agent - Real-time Autonomous Dispatch & Inbound Voice Engine
Enterprise telecommunication gateway with ultra-low latency WebSocket bi-directional audio streaming, automated caller intent routing, and real-time CRM ingestion.
WooCommerce AI WhatsApp Agent - Autonomous Cart Recovery & Conversational Commerce
Official Meta Cloud API commerce agent with real-time WooCommerce catalog synchronization, abandoned checkout recovery, and multi-currency order tracking.
Meet Eric Core - AI Executive Calendar & Priority Meeting Dispatcher
Autonomous executive scheduling assistant with natural language email parsing, timezone reconciliation, and calendar conflict defense.
VenueStrike Core - Multi-Location Venue Scheduling & Real-Time Event Dispatch
Enterprise hospitality and event management engine with live floor plan allocation, real-time staff roster sync, and automated VIP guest dispatch.
Cliniko AI Ops - Healthcare Telehealth EHR Automation & Patient Voice Intake
HIPAA/GDPR-aligned healthcare operations cockpit integrating Cliniko EHR with automated patient intake transcription, diagnostic code mapping, and clinical note generation.
NightShift - Autonomous Inbox Agent & AI Employee
Enterprise inbox agent with grounded knowledge retrieval and human-in-the-loop approval gates.
Prospect OS - Autonomous Outbound Engine
End-to-end B2B sales automation engine powered by 8 specialized sub-agents with auditable rubric scoring.
ParcelQuote - Instant Property Quoting Platform
High-precision commercial and residential property quoting engine using OpenStreetMap polygon geometry.
Photo Condition & Rehab Estimator API
Multimodal property condition classifier and automated capital expenditure estimating engine.
LedgerFlow Core - Autonomous Payment & Ledger Compliance Engine
Enterprise fintech settlement engine with NACHA 94-char ACH compilation, double-entry ledger invariants, and dual-provider AI compliance.
Forward RAG OS - Enterprise Knowledge Base & Boundary Shield
Governed RAG architecture with air-gapped data tiering, de-identification quarantine, and ChatGPT Boundary Shield.
Legal AI Workflow Assistant (27-Member Law Firm)
Internal legal document analysis and contract risk assessment platform powered by Google AI Studio.
AI Automation Hub - Multi-Pipeline Orchestrator
Confidence-routed operational ecosystem spanning customer email, CRM lead scoring, and automated task dispatch.
CallScore AI - Deterministic Call Grading Engine
Voice call transcription, speaker diarization, and drift-free employee performance evaluation.
InterCapital Funding - AI Commercial Lending Platform
Intelligent commercial real estate lending dashboard with automated OCR document extraction and RAG underwriting.
CarFix AI - Multimodal Damage Assessment Engine
Automated vehicle damage detection and repair cost range estimation via multimodal vision and background queues.
IsoCore SaaS - Multi-Tenant Kernel RLS & Invariant Ledger
Enterprise SaaS kernel with multi-tenant row-level security, deterministic ledger invariants, and 5-role RBAC.
TaxFlow Core - 14-Step Tax Pipeline OCR & Filing Engine
End-to-end tax practice automation pipeline with dual AI OCR extraction, Form 8879 gates, and Drake/UltraTax bridges.
TheraScore AI - Clinical Psychotherapy Quality & Adherence Platform
HIPAA-compliant psychotherapy session evaluation engine computing DBT-ARS and CTRS adherence scores with inline safety firewalls.
SDR Resume OS - Vector RAG Career Positioning & Transformation Engine
Career positioning platform utilizing 50+ exemplar vector embeddings and a VP of Sales 6-second glance evaluation model.
GearSignal AI - Modular Social-Listening & Lead Discovery MVP
Autonomous social listening engine monitoring Reddit and guitar marketplaces with centralized keyword routing and Slack Block Kit alerts.
SquidERP - Agentic Architecture Governance & Drift Firewall
Enterprise ERP agentic control plane governing multi-agent ERP operations with drift detection and compliance gates.
CallGuard Ops - Trade Answering Voice AI & Dispatch Cockpit
Voice AI telephone answering system with Retell Scottish trade prompt bench, Make.com DLQ handlers, and Twilio failover.
RevOps Orchestrator - Enterprise Revenue Automation Engine
Enterprise RevOps orchestration platform synchronizing Salesforce, HubSpot, and billing systems via multi-agent state machines.
DocRef Vault - Full-Stack Document Reference & Filing System
Regulatory document reference and semantic filing platform with deterministic section citation and metadata extraction.
Claude Dev Cockpit - Anthropic Architecture & Workflow Bench
Production architecture workbench and evaluation cockpit for multi-agent workflows, prompt caching, and tool execution.
E-Rate Procure IQ - USAC Form 470 School Procurement Platform
Public sector procurement intelligence engine parsing USAC E-Rate Form 470 RFP filings for school hardware and telecom contracts.
Cozad Medical Ops - Healthcare Prior Authorization AI
Clinical documentation and prior authorization engine matching patient EHR records to insurance payer medical necessity rubrics.
Nassau Clean AI - Residential Cleaning Booking & Route Dispatch
Autonomous residential cleaning quote and booking engine with real-time distance matrix calculations and crew scheduling.
Influencer Reach CRM - Platform-Compliant Creator Engine
Enterprise creator outreach platform built strictly around official Meta Graph and TikTok APIs with automated rate-card tracking.
Pipedrive Integrations Hub - Bi-Directional Webhook & SMS Sync
Unified integration hub connecting Pipedrive CRM to Sinch AI SMS agents, attribution tracking, and Power BI data pipelines.
N8N Hospitality CRM - Multilingual Guest Orchestrator
Autonomous hospitality management engine orchestrating guest inquiries, upsells, and multilingual support via n8n workflows.
TrendPulse AI - Social Intelligence & Video Scripting Agent
Autonomous multi-channel intelligence agent analyzing viral TikTok and YouTube trends to generate validated video scripts.
NextDrip VA Phone - Healthcare IVR & Concierge Telephony
Virtual assistant telephony and SMS routing engine for specialty medical wellness and concierge IV therapy practices.
VSL Pipeline QA - Video Script Generation & Compliance Studio
Autonomous video sales letter pipeline generator with psychological hook modeling and FTC compliance verification.
Freedom Motors Sync - Automotive Inventory & Sanity CMS Bridge
Automotive dealer inventory synchronization platform linking dealer management systems (DMS) to Next.js 15 and Sanity CMS.
FSM Protocol Studio - Frequency Research & Code Compiler
Clinical research and protocol compilation engine for Frequency Specific Microcurrent (FSM) hardware and medical devices.
Cal Realty Ops - California Real Estate Autonomous Transaction Layer
Autonomous real estate transaction coordinator platform managing California Association of Realtors (CAR) forms and escrow timelines.
Augusta Lights AI - Architectural Lighting Visualization & Quote Platform
Mobile-first architectural holiday and commercial lighting quotation platform with interactive multi-zone rendering.
PersonaFlow AI - Consumer AI Simulation & Qualitative Intelligence
Consumer persona simulation engine conducting synthetic focus groups and generating automated PDF market research dossiers.
AI Systems Cockpit - Fractional Systems Advisor & Cost Router
Fractional AI systems executive console featuring multi-model cost routing, latency benchmarking, and architecture governance.
Ontario Student Voice - Career College Enrollment Voice Agent
Autonomous outbound voice verification and qualification pipeline for Ontario career colleges adhering to Ministry standards.
Retirement Scorecard - Advisory Diagnostics & Wealth Simulator
Wealth advisory diagnostics engine assessing retirement readiness, tax drag, and portfolio longevity across 4 risk vectors.
HomeLoanRev AI - Mortgage Client Reactivation & Review Engine
Conversational mortgage client engagement platform conducting annual home loan reviews and refinancing qualification.
Wärme Wimmer SHK Ops - Plumbing & HVAC Autonomous Dispatch
German sanitary, heating, and air conditioning (SHK) business process platform with automated emergency dispatch and n8n pipelines.
Atelier Grooming - Bespoke Editorial Barbershop Platform
High-density editorial barbershop web platform featuring split-drag before/after visualizers and friction-free booking.
BuildInspect AI - Computer Vision Construction & OSHA Compliance
Computer vision building inspection platform detecting structural defects and OSHA code violations in real time.
AgentOps Core - Multi-Agent Swarm Orchestration & Trace Console
Production-grade multi-agent governance platform providing DAG workflow scheduling, trace observability, and token telemetry.
ScaleOps Core - SaaS Infrastructure Reliability & Chaos Console
SaaS backend reliability and autoscaling platform with automated failover testing, database query profiling, and queue monitors.
Designing or scaling an autonomous AI platform?
I architect, benchmark, and ship high-reliability AI platforms with grounded retrieval, multi-agent state machines, and mathematical financial invariants.
Scaling Legiit to 400,000+ Users & $1M ARR AI Command Center
For 4 years I was Engineering Team Lead at Legiit, a marketplace now processing 1M+ orders for 100K+ businesses through a vetted network of 25K+ freelancers. I engineered the core platform architecture, built the AI-powered Command Center from scratch, and developed the native mobile apps.
High-Concurrency Marketplace Core
Architected the entire billing flow, wallet escrow holding, instant seller payouts, and WebSockets messaging. Scaled platform with zero service interruptions during major peak events.
Scored 1,500+ businesses across 40+ countries via Google APIs & automated matching.
Built in React Native (iOS & Android) with real-time bidding, biometric auth & push.
Automated escrow holds, milestone releases, affiliate splits & double-entry ledger.
Reduced query latency from 800ms to 118ms; WebSockets live chat with preview.
"He didn't just patch features together, he engineered the architecture that allows us to scale safely."
- Chris M. Walker, CEO of Legiit
Did Your AI Tool Get You 80% There,
And You Need a Real Engineer to Ship It?
I rescue, refactor, and ship AI-generated MVPs built with Lovable, Bolt.new, v0, Replit, Base44, and Supabase that stalled before production. I take prototypes with missing indexes, broken auth, failing webhooks, and request timeouts, and transform them into hardened, revenue-generating production SaaS platforms.
Brittle Schema & DB Normalization
Multi-Tenant Auth & Row Level Security (RLS)
Stripe Billing, Webhooks & Idempotency
Async Background Queues & Timeout Protection
Deterministic Guardrails & Model Grounding
Production Infrastructure & CI/CD
Ready to turn your prototype into a live, paying business?
Average MVP rescue turnaround is 5–14 days. Full architecture audit, security scan, and hardened production deliverables with zero lock-in.
10 Bottlenecks in Scalable Systems - Diagnosed & Resolved
How I identify root causes, evaluate framework trade-offs, and engineer high-concurrency solutions that keep systems fast and reliable under heavy traffic.
Database N+1 Query Cascade & Pool Starvation
Resolving 500+ independent SQL roundtrips per page load on high-volume marketplace dashboards.
ORM Lazy-Loading in Loop
Fetching seller orders triggered N separate queries for items, buyers, and ledger details, consuming all available database connection pool slots during traffic surges.
Architectural Trade-offs Evaluated
• In-Memory Node.js Joins: Created heavy RAM bloat and blocked event loop under 1,000 QPS.
• Microservice Split: Added unacceptable network hop latency to checkout path.
• Engineered Approach: Relational eager loading with column projections + composite B-Tree indexing + Redis tagged write-through cache.
Single-Pass Relational Execution
Collapsed 500 queries down to 2 optimized single-pass queries with composite index on (seller_id, status, created_at) and atomic cache invalidation.
// ✅ MASTER FIX: Relational Eager Loading + Redis Tagged Cache
public function getSellerOrders(Request $request) {
$sellerId = $request->user()->id;
$cacheKey = "seller:{$sellerId}:orders:page:" . $request->get('page', 1);
return Cache::tags(["seller_{$sellerId}_orders"])->remember($cacheKey, 120, function () use ($sellerId) {
return Order::query()
->with(['items:id,order_id,title,price_cents', 'buyer:id,name,avatar_url', 'escrowDetails:id,order_id,status'])
->where('seller_id', $sellerId)
->where('status', OrderStatus::PAID)
->orderBy('created_at', 'desc')
->paginate(25); // Exactly 2 single-pass SQL statements
});
}Systems Engineered For Longevity
Architecture decisions focused on maintainability, query speed, transaction integrity, and minimal operational overhead.
Full-Stack SaaS & Web
Next.js 15, React 19, TypeScript, Tailwind, Server Components, and responsive mobile architecture.
High-Throughput APIs
Laravel, Node.js/NestJS, Python Django, Celery background queues, and WebSockets real-time sync.
Fintech & Billing Escrow
Stripe Connect, escrow holding, automated splits, webhook handlers, and multi-currency ledgers.
Database & Infrastructure
PostgreSQL/MySQL index tuning, Redis caching, AWS EC2/S3 deployment, and HIPAA compliance.
Architectural Rigor vs. Generic Freelance Builds
Comparing critical execution standards across production deployments. Rigorous architecture directly reduces cloud bills and eliminates refactoring debt.
"Shaq actually works with us on Legiit."
Trusted by marketplace founders, agency CEOs, and high-profile entrepreneurs to engineer scalable digital systems.
"Most developers just write code; he thinks in systems. Legiit isn't a simple website; it's a complex marketplace with intricate financial logic. He engineered the architecture that allows us to scale safely. I don't need a freelancer; I need an engineering partner."
"When I land high-stakes clients like Steve Weatherford, I can't afford 'trial and error.' I bring him in because he brings an engineering discipline to agency chaos. He was the technical lead behind our biggest deployments because the code is clean, the database optimized, and the delivery flawless."
"I don't know the code, I just know that my platform needs to perform as hard as I do. The team delivered a digital HQ that handles my traffic, my content, and my sales without blinking. It feels solid, fast, and professional. That's the standard."
Direct Technical Leadership - No Junior Handoffs, No Agency Bloat.
When you partner with me, you collaborate directly with a 15-year systems architect on every line of code, architecture decision, and deployment. No account managers, no junior developers learning on your project, and no agency overhead.
High-throughput architectures in Next.js 15, FastAPI, Supabase, Inngest durable step-swarms, and NIST AI RMF governance boundaries.
Taking AI-generated codebases (Lovable, Bolt, v0, Replit, Base44) through schema refactoring, auth fixing, security hardening, and live production launch.
Open Source & Engineering Labs
Developer tools, API utilities, and full-stack modules maintained in public.
ai-tool
Multi-purpose AI toolkit featuring automated content generation, image analysis, and text processing with GPT-4 & Anthropic APIs.
seo-generator
AI-powered SEO content generator using OpenAI API. Automatically creates meta titles, descriptions, and rank-optimized web content.
supplier-portal
E-commerce supplier management system with Next.js frontend, Shopify API integration, and real-time inventory tracking.
eticket-api
High-concurrency RESTful API for event ticketing with QR code validation, seat reservation locking, and payment webhooks.
barakah-school-suite
Islamic school management system with attendance, automated fee collection via SSLCommerz, and student performance reports.
heartcore-guardian
Real-time health monitoring dashboard for tracking patient vital signs and wellness metrics with WebSocket data feeds.
Ready to engineer your next platform?
Available for enterprise AI application engineering, autonomous agent swarms, MVP rescues, and mission-critical SaaS architectures. Direct engagement with guaranteed milestones.