Accepting new 2025 CodeWheel AI engagements for AI web, security, and commerce programs.
AI platform development with security-first architecture

CodeWheel AI - Fractional AI Architect - Bay Area

Fractional AI Architect: Security-First Platforms for Startups Who Ship Fast

AI architecture, security testing, and production code from one engineer with 15 years at scale. No agency markup, no junior risk—just one person who ships.

AI Consulting San Francisco Bay Area

For CTOs building AI platforms

The issues I solve first

If your AI features feel unpredictable, leaky, or risky, we start by fixing the foundations—agent guardrails, RAG retrieval safety, and platform security—before scaling up.

LLM features behave unpredictably in production, especially under real user prompts.

RAG pipelines risk leaking tenant data or surfacing stale content you thought was gone.

Agents have too much power and can trigger unsafe actions without clear guardrails.

What you get

Architecture, security, and shipping discipline from one engineer

What I build

  • Next.js + Neon Postgres platforms with Clerk auth and RAG context engineering
  • MCP servers with custom security hardening and rate limiting
  • AI MVP development from prototype to production in weeks
  • Fractional AI architect guidance for technical strategy and velocity

Security & testing baked in

  • Full-coverage end-to-end testing on every feature
  • Playwright automation suites wired into CI
  • Security audits across auth flows, data access, and MCP endpoints
  • Docker-based penetration testing before production deployment

Ideal for founders who

  • Need AI-native architecture, not bolt-on features
  • Want someone who codes with Codex, Claude Code, and Gemini CLI while maintaining production standards
  • Value security-first development over “ship fast and fix later”
  • Prefer working with one senior engineer over a committee

Fractional Engagement Model

Need CTO-level guidance without a full-time hire?

Reserve 20-40 hours per month for architecture, security testing, and hands-on development. Most clients commit for 3-6 months with custom pricing determined during roadmap intake—senior technical leadership for a fraction of a full-time CTO.

Learn about fractional model

Recent wins

Micro case studies you can verify

Agent rollback controls

Added RBAC + confirmation workflow to an agent that could mutate customer data; prevented two high-risk operations during pilot.

Tenant-safe RAG

Rebuilt retrieval filters and chunk lineage so a multi-tenant platform passed a vendor security review without reindexing.

Prompt-injection hardening

Ran prompt-injection suite pre-launch; caught four vectors that bypassed content policy and patched them before GA.

How I can help

Three ways to work together

AI Security Testing & Penetration Testing

Comprehensive security testing including OWASP vulnerability assessment, penetration testing, prompt injection audits, and AI security consulting led by an AI consultant with 15 years of production experience.

See security testing details

Next.js AI Platform Development & RAG Implementation

Next.js on Vercel + Neon Postgres AI platforms with RAG implementation, vector search, semantic retrieval, authentication (Clerk), billing (Stripe), observability, and security testing built in from day one.

See platform development details
Most Popular

Fractional AI Architect on Retainer

Part-time CTO guidance covering architecture, security testing, and hands-on development. Typical engagement: 20-40 hours per month for 3-6 months with investment scoped after roadmap review.

Learn fractional model

Ready to see it in action?

Walk through your architecture with me

Share your stack in a 30-minute session. I'll map out RAG implementation, security testing, and deployment strategy tailored to what you're building.

Email matt@codewheel.ai

Stack in practice

How I wire production AI platforms

Next.js frontends, RAG retrieval, MCP agents, and security baked in from day one. This is the reference stack I use on client builds—streaming, tenant-aware, and testable.

Illustration of modern AI platform development with Next.js, RAG, and security

AI Consultant Trust Signals

Proof you can verify before hiring me

15 years

Production engineering (Tesla, SaaS teams, agencies)

Solo consultant

Direct access-no account managers or handoffs

Security-first

Penetration testing & security audits baked into every build

Honest signal

Verified background + early clients program

Real LinkedIn profile with 15 years of production work (including Tesla). Early adopter deals include direct influence on the playbook and priority access so I can capture portfolio proof together.

Why CTOs hire me

Builder + breaker in one engagement

Principal-level architect who also ships the code and tests it.

Security-first: penetration testing, RAG/agent guardrails, and observability baked in.

Direct access: no PM handoffs—decisions and fixes come straight from me.

MCP integration expertise

Build custom MCP servers for your AI workflows

Model Context Protocol (MCP) servers let Claude Code, Codex, Gemini CLI, and other AI tools access your internal systems. I build production MCP integrations with proper auth, rate limiting, and observability.

Custom MCP Servers

  • Connect Claude to your database, APIs, and internal tools
  • TypeScript/Python implementations with full type safety
  • Auth middleware and tenant isolation built in

MCP Tools Integration

  • Neon Postgres and pgvector connectors for RAG pipelines
  • Clerk auth with multi-tenant isolation baked in
  • Stripe billing and webhook handlers
  • GitHub, Linear, and Notion API bridges

Production Hardening

  • Rate limiting and circuit breakers
  • Logging, monitoring, and error tracking
  • Security testing for MCP endpoints

Fit check

Who I'm perfect for (and who I'm not)

Ideal clients

  • Pre-seed to Series A teams building AI-first products that need an experienced partner.
  • Founders or lean engineering teams who want senior-level help without hiring a full agency.
  • Startups who need to pass due diligence or vendor security reviews without hiring a full-time CISO.

Not the best fit

  • Organizations pursuing formal compliance attestations or large enterprise procurement cycles.
  • Programs that require 24/7 on-call coverage or a full multi-person implementation team.
  • Engagements seeking polished agency-style marketing over collaborative, transparent work sessions.

AI Security & Platform Development Resources

Latest articles on penetration testing, RAG implementation, and AI consulting

Jun 7, 2025

AI Agent Architecture: Security, Orchestration, and Tool Use Patterns

How to design safe, reliable AI agents in production—tool calling, guardrails, orchestration, and architecture patterns for real-world AI systems.

Read article

Jun 7, 2025

Production AI Platform Stack: Next.js, Supabase, and Vercel Architecture Guide

A practical AI platform stack for real products—Next.js, Supabase, RAG, agents, security, observability, and scalable infrastructure.

Read article

Jun 7, 2025

AI Platform Security Guide: Enterprise Multi-Tenant Architecture Framework

A complete guide to AI platform security—threat models, LLM risks, RAG safety, multi-tenant isolation, and controls that hold up in production.

Read article

Ready to work with an AI consultant?

Get security testing & platform development from one engineer

Whether you need penetration testing, RAG implementation, or full AI platform development, let's talk. As a solo AI consultant with 15 years experience, I provide direct access without agency markup.

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