Services
Senior Engineering,
Independently Delivered
PsiMatrix is the independent practice of Theo Tillotson — a Sr. Full-Stack Developer and Technologist with 35 years building production systems, independently assessed in the top 1-in-10,000 of software engineers by frontier-AI evaluations from Anthropic and xAI.
The focus now is agentic AI engineering: I don't just integrate off-the-shelf tools — I architect, build, and deploy AI agent systems that run inside your business. The same hands cover the full stack beneath them, from the database to the edge.
Start a Conversation >>$ psimatrix --rate
Operator: Theo Tillotson
Role: Sr. Full-Stack Dev / Technologist
Experience: 35 years
Rating: Top 1-in-10,000 (Anthropic, xAI)
Focus: Agentic AI Engineering
Rate: $150/hr
Status: AVAILABLE
Four Ways to Engage
Engagements scale from a single automation pipeline to full back-of-house ownership. Market rate is $150/hr — senior delivery without agency overhead.
Agentic AI Engineering
Design, build, and deploy AI agent systems that do real work — agent orchestration, multi-model routing, tool and MCP integration, and agentic content pipelines. Not off-the-shelf chatbots: production systems wired directly into your operations.
// included
- > Agent orchestration & council patterns
- > Multi-substrate model routing
- > Custom MCP servers & tool integrations
- > Agentic automation & content pipelines
- > Evaluation, guardrails & observability
for: Businesses ready to put AI to work on actual workflows — not demos.
Inquire >Full-Stack Development
35 years of shipping production software. WordPress, PHP, JavaScript, databases, and API integration — enterprise-grade, delivered without enterprise overhead.
// included
- > WordPress & PHP plugin / theme development
- > Front-end & JavaScript engineering
- > REST / API design & integration
- > MySQL & MSSQL database work
- > Performance & security hardening
for: Companies that need a senior engineer who ships — not a team to manage.
Inquire >System Administration & DevOps
The infrastructure under the application — server configuration, deployment automation, monitoring, and edge/CDN. Built to stay up and stay fast.
// included
- > Server configuration & hardening
- > Deployment automation
- > Cloudflare CDN / edge & WAF
- > Monitoring & alerting
- > Backup & disaster recovery
for: Teams that need reliable infrastructure without a full-time ops hire.
Inquire >Technical Strategy & Architecture
Senior counsel on the decisions that are expensive to get wrong — stack selection, integration architecture, and an AI tooling roadmap you can actually execute.
// included
- > Stack & vendor decisions
- > Integration & data architecture
- > AI adoption roadmap
- > Code & systems audits
- > Technical due diligence
for: Founders and teams making high-stakes technical decisions.
Inquire >Have a Problem
Worth Solving?
Whether it's a full AI strategy, a single automation pipeline, or a system that needs a senior hand, let's talk about what's possible. Independent since 1996 — no overhead, no bureaucracy, just results.