Dimitri Cole Restaino

Dimitri Cole Restaino

AI, blockchain, and agentic finance.

I spent five years at AWS, most recently as a Senior Solutions Architect, and I'm now a Customer Solutions Director at Ripple, helping banks adopt digital asset custody and payments. These days I build a lot of my demos and tools with Claude.

Start the descent
Dimitri on a trail in the Swiss Alps

Summit 4,000 m

What I work on now

AI

I've designed AI systems at Ripple and AWS: an RFP workflow on Claude with an eval harness behind it, the AWS architecture for a multi-provider AI layer in a healthcare platform, and an LLM fine-tuning plan for a mental health platform.

Blockchain

I help banks, from global banks to regionals, work through network choice, custody, and key management, then build the demos that make it concrete: stablecoins, tokenized deposits, and custody on Ethereum and the XRP Ledger (XRPL).

Agentic finance

AI agents that can read a ledger and act on it. I build internal MCP servers that let an agent research XRPL data and execute on-chain transactions.

What agentic finance looks like

The agent works through tools, calling the ledger the same way it would call any other API. Here's a sketch of how a session can go, with a person approving the payment before anything is signed.

An illustration with made-up testnet data, not my actual tools. Nothing here touches a real ledger.

Camp 3 3,300 m

Ripple

Customer Solutions Director
New York, NY, Aug 2025 - present

I lead our North America Customer Solutions team and build much of what we demo and teach with.

  • Lead the Customer Solutions team (pre-sales Solutions Architects) as a player-coach, carrying my own accounts and advising 20+ banks, from G-SIBs to regionals, on digital-asset strategy, custody, and key management.
  • Built a stablecoin and tokenized-deposit engine on Ethereum and XRPL with an iOS custody front end, and used it as the closing demo in an onsite session for a global bank's engineering leadership.
  • Designed an AI RFP workflow with Claude on Amazon Bedrock and AWS Step Functions, used on 10+ RFPs. An eval harness scores every run against a principle-based rubric with golden answers built in, and a human review-and-fix loop follows.
  • Built the team's enablement stack with Claude Code: Solutions Exchange, an Okta-integrated portal for sharing and deploying demos, plus interactive Ripple Custody and Ripple Payments tutorials that cut meeting prep from days to hours.
  • Built MCP servers for internal XRPL data research and on-chain transaction execution.
  • Serve as an org AI lead for sales, running AI training for 20+ reps and building internal AI tooling.

Camp 2 2,600 m

Amazon Web Services

Senior Solutions Architect
New York, NY, Sep 2020 - Aug 2025

Enterprise accounts and ISV partners pulled me into generative AI early.

  • Advised ~20 enterprise accounts in financial services and healthcare, driving 30+ migrations, several with SI partner Caylent, and helped secure a multi-year partnership with a blockchain ISV.
  • Designed the AWS architecture for the multi-provider AI layer in ISV partner InterSystems' IntelliCare, the first AI-native EHR to earn EU MDR Class IIa certification, and co-designed how its models were scored by clinical task.
  • Architected and scoped LLM fine-tuning on de-identified data for a mental health platform, ahead of the launch of its AI mental health companion.
  • Built private XRPL node infrastructure and agentic AI POCs that query multi-network ledger data.
  • Delivered 40+ developer workshops, 100+ customer demos, and reference implementations, and mentored Solutions Architects and Technical Account Managers.
  • Placed first in AWS's Industries AI Heroes hackathon, representing Healthcare and Life Sciences, with a physician-inbox organizer and a doctor-facing chatbot.
  • Fed customer and partner feedback to AWS service teams on 10+ features, Claude on Amazon Bedrock among them.

Camp 1 1,800 m

Travelers

Tech Lead / Developer
Hartford, CT, Feb 2016 - Aug 2020

Where I learned to lead a team.

  • Led seven developers plus an Accenture delivery team, migrating legacy financial systems to API and event-driven architectures, including a partner-integration platform handling ~70% of transaction volume.
  • Organized an innovation club, developer workshops, and hackathons reaching 1,000+ participants.

Quinnipiac University

MBA and BS in Entrepreneurship & Small Business Management
Hamden, CT, 2015

  • Competitively selected for a 4+1 BS+MBA program.
  • International coursework in France, Hungary, Italy, and Switzerland.

Talks and writing

I've taught developers through workshops since my Travelers days, and more recently through talks and writing.

Skills

AI and LLMs

Claude API, Claude Code, Claude on Amazon Bedrock, agentic workflows, MCP, evals, and fine-tuning.

Digital assets

XRPL, Ethereum, tokenization, stablecoins and tokenized deposits, custody, key management, institutional DeFi, and agentic finance and payments.

Pre-sales and enablement

POCs, demos, RFPs, workshops, partner enablement, developer advocacy, and executive communication.

Programming and APIs

JavaScript and TypeScript (React, Node.js), Python, C#, REST APIs, webhooks, WebSockets, and SDKs.

Cloud and architecture

AWS (Step Functions, serverless, event-driven architecture), enterprise integration, Okta and SSO, and cost optimization.

Certifications

AWS Solutions Architect - Professional, and SAFe 4.0 Certified Scrum Master.

Chasing mountains

Most of my time off is spent in the mountains, on a snowboard or a trail.

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