Agent architecture
Harness design, context engineering, and MCP tool interfaces. Decomposes expert workflows into agent behaviors, tool calls, and review checkpoints an engineer can build against.
2agent platforms in development
Applied AI Product & Deployment LeadCPA · New YorkPwC
James Pustorino
I design the agent systems that replace complex professional services workflows.
At PwC, I define harness architecture, context engineering, and MCP tool interfaces for two internal agent platforms in development, and I scaled 5+ enterprise AI platforms to ~3,000 users at 80%+ daily active usage.
~3,000
Users on the enterprise AI platforms James scaled
5+
Enterprise AI platforms owned build-vs-buy
100+
M&A transactions advised, up to $50B
$100M+
Prospective cash-tax savings
What I do
Architecture, deployment, and the domain underneath both.
James designs agent systems for complex professional services workflows and owns how they land with the practitioners who have to use them. Nine years advising on the underlying transactions is what keeps the architecture honest - and why he names what is still in development rather than overstating what is live.
Deployment that sticks
Buying the software is easy. Getting experts to change how they work is the hard part: structured pilots, an AI Champions network, tiered enablement, and governance gates.
80%+daily active usage
Domain expertise, not adjacency
Nine years advising on $1B-$50B M&A transactions. He is not translating a domain he learned from a spec - he is automating work he did himself.
100+M&A transactions advised
Measured adoption, not licenses
Adoption analytics that score access, activation, recency, and depth - separating who holds a license from who actually changed their workflow.
4adoption axes scored
Experience
Nine years inside the work he now automates.
One firm, one continuous thread: first advising on the transactions, now architecting the agent systems that carry the same work.
Applied AI Product & Deployment Lead, M&A Tax
CurrentPwCManager· Since Dec 2022
Designs the agent systems that replace complex professional services workflows, and owns the enterprise deployment record behind them. Two internal agent platforms remain in development.
~3,000practitioners reached80%+daily active usage2agent platforms in development4adoption axes scored
- Architects harness design, context-engineering patterns, and evaluation frameworks for two internal agent platforms in development.
- Writes TypeScript MCP tool interfaces that give engineers a real boundary to build against, plus evaluation datasets that check agent output against practitioner standards.
- Defines truth-boundary controls - what counts as complete, reviewed, and accepted - so a reviewer can audit agent output at every stage.
Tax Advisor
PwCAssociate to Manager· June 2017 - December 2022
Advising on $1B-$50B M&A transactions, in the workflows he now designs agent systems for. This is the domain expertise that grounds every architectural decision he makes.
100+transactions advised$50Blargest deal$100M+prospective savings
- Advised private equity and Fortune 500 clients on 100+ M&A transactions across financial and cross-border matters.
- Built Alteryx data pipelines that seeded a multimillion-dollar service line and became firm-wide templates.
- Contributed to $100M+ in prospective cash-tax savings across complex transactions.
Toolkit
What's in the kit.
The skills and tools behind the numbers, from agent architecture to the platforms used daily.
Agent Architecture
How the system is designed
Harness DesignContext EngineeringMulti-Agent CoordinationEvaluation FrameworksMCP Protocol & Tools
Implementation
Built hands-on, not specced
TypeScript MCP InterfacesPython Data PipelinesRust CLI ToolingEvaluation DatasetsPrompt & Context Systems
Enterprise Deployment
Getting experts to actually use it
Build-vs-Buy EvaluationVendor GovernanceAdoption AnalyticsStructured PilotsChampion NetworksEnablement Programs
Platforms & Tools
Used hands-on, daily
Claude CodeCursorCodexTypeScriptPythonRustHarveyChatGPT EnterprisetoltIQCopilotAlteryx
CPA
New YorkLicensed in New York State since 2019
MS Taxation and BBA Accounting
2016Hofstra University
Eagle Scout
BSABoy Scouts of America
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