dennissirois.com

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Dennis Sirois

AI Systems Engineer & Consultant — MCP · multi-agent systems · Claude Code

Most AI work I see is demos. I build the other kind — custom MCP servers, multi-agent systems, and autonomous workflows that survive contact with production. Twenty-five years of enterprise IT discipline applied to the layer where most teams get stuck.

Dennis Sirois

what I build

Not prompt engineering. Systems.

Three custom MCP servers shipped across Node and Python, over stdio and ZeroMQ transports. A few of the things I've put into production:

81

tools, one MCP server

My largest server exposes 81 tools to Claude over the Chrome DevTools Protocol — a full automation surface, not a toy wrapper.

3

layers of supervision

A multi-agent architecture where one Claude session supervises another via file-based escalation and an injected URGENT.md hook.

0

ungated live orders

An autonomous trading bridge into NinjaTrader 8 over ZeroMQ — every order-placing tool behind a kill switch, every call in a JSONL audit trail.

how I work

I treat AI systems the way I treated infrastructure.

Structured tool schemas. Safety gating. Audit logging. Versioned modules. Supervision layers. Not one-off prompts.

That instinct comes from 25 years across utility, FDA-regulated, SSAE-16/SOC, and DCAA/DCMA-compliant environments — six of them as Senior Systems Administrator at a publicly traded utility. I've designed DR plans that passed SSAE-16 audit and held 99.99% uptime for an FDA-regulated client under SLA.

Most shipped AI looks like it was built by people who never had to answer for a failed DR test: no audit trail, no kill switch, no separation between read and mutating operations, no plan for when the agent halts, loops, or hallucinates state. Those instincts transfer directly. They're the differentiator.

$ Today: AI Systems Engineer at a managed IT firm serving municipalities across New England — building MCP-based integrations for helpdesk, compliance, and workflow systems, and managing their Claude Teams account. Government-adjacent operations where controls aren't optional.

services

What people book me for

I work better in 30-minute calls than 30-page proposals. Most calls end with a written-down next step — what to build, what to skip, what to instrument before you ship.

Claude Code, MCP & custom agentic tooling

  • You're scoping or building an MCP server and want to pressure-test tool boundaries, schema design, and transport choice before you commit.
  • Your Claude Code project has outgrown ad-hoc prompts and you want real architecture: scoped skills, subagents, hook-based guardrails, file-based memory.
  • You're wiring Claude to a proprietary or desktop app (CDP, ZMQ, custom bridge) and the standard examples stop where your problem starts.
  • You're comparing Anthropic Agent SDK vs. Claude Code vs. raw API and want an honest read from someone who's shipped in all three.

Outcome: a concrete next-step decision — schema, transport, scope, or staging — written down before the call ends.

Multi-agent systems & autonomous loops (safely)

  • You're about to point an agent at production and want to design the safety surface first: kill switches, mutating-vs-read separation, gated arming, state guards.
  • You need an audit trail for an autonomous agent that survives a compliance review.
  • You're designing inter-agent communication — file contracts, supervisor → executor channels, escalation patterns — and want to skip the obvious failure modes.
  • You're stuck on a loop that "almost works" but drifts, loops, or hallucinates state, and you want a forensic look at the run.

Outcome: a sketched safety architecture, named failure modes, and the 2–3 things to instrument before you run again.

AI in regulated & critical-infrastructure environments

  • You're an IT leader at a utility, hospital, financial firm, or regulated SMB being pushed to deploy LLMs without blowing the controls you already have.
  • You're drafting an internal AI policy and want a practitioner's read on what's enforceable vs. theater.
  • You're evaluating a "Claude inside our environment" vendor pitch and want a quiet second opinion on data exposure, network architecture, and audit posture.
  • You need to bridge an IT/OT divide where the OT side will not touch the public internet — air-gapped, local-LLM, and proxy patterns.

Outcome: a scoped path forward — what's safe to pilot in 90 days, what to defer, and the 3 controls you shouldn't skip.

AI session continuity & institutional memory

  • Your team uses Claude Code for real work and keeps losing context between sessions — decisions get re-litigated, constraints forgotten, work repeated.
  • You want a framework for maintaining institutional knowledge across session resets and team handoffs.
  • You need a durable memory and continuity design before you scale a multi-session or multi-agent workflow.

Outcome: a session continuity design — what to capture, where to store it, how to keep it consistent — that fits your existing project structure.

AI for trading, quant workflows & desktop automation

  • You're a prop trader, quant, or fintech founder weighing LLM-driven trading or research workflows and want a clear-eyed read on real vs. marketing.
  • You're integrating Claude with a desktop trading or charting app (NinjaTrader, TradingView, MT5, Sierra) and need a working bridge pattern.
  • You're scoping an RL pipeline (SAC, PPO, custom env, walk-forward) for a small team and want feedback on architecture and reward design first.

Outcome: a sharper picture of where AI helps, where it doesn't, and what the next 30 days should look like. (I'm not selling a strategy — the engineering is the point.)

experience

25 years keeping things running

AI Systems Engineer
Managed IT firm — New England municipalities
2025 – present

MCP-based integrations for helpdesk, compliance, and workflow automation. Custom skill authoring, multi-agent orchestration, n8n workflows. Managing the org's Claude Teams account.

Senior Systems Administrator
Publicly traded utility — critical infrastructure
2020 – 2025 · 5 yrs

IT/OT server infrastructure: AD, DNS/DHCP, PKI, virtualization, storage, capacity planning, backup & DR. Designed DR plans that passed SSAE-16 audit. Maintained 99.99% uptime for an FDA-regulated client under SLA.

Cloud & Hosting Operations Engineer
ERP & cloud solutions firm
2019 – 2020 · 1 yr

Managed cloud/hosting ops across SAP, SQL, Linux, and Windows — deployments, upgrades, incident resolution, DR. AWS Architecture training.

Business Systems Programmer / Analyst
ERP solutions & defense contractor (DCAA/DCMA)
2013 – 2019 · 6 yrs

SAP Business One DI/UI API development, .NET applications, T-SQL, Crystal Reports. Built a Job Costing system conforming to DCAA/DCMA guidelines. Led a 6-month SAP deployment as PM.

IT Infrastructure Manager
Document management firm — FDA regulated
2007 – 2013 · 6 yrs

Full IT oversight across multiple sites. Rebuilt the network (Cisco/SonicWall), held 99.99% uptime under FDA-regulated SLAs, designed automated offsite backup/failover, led a successful SSAE-16 audit. Cut scanning hardware costs $25K+/yr with VB.NET automation.

Earlier roles (2002–2007): IT recruiter, IT consultant, enterprise-software support, desktop support & implementation. Available on request.

contact

Let's talk

Building an MCP server, designing an agent loop, or deploying Claude in a regulated environment? That's the conversation I want to have. First five minutes are on me if it's not a fit.