DC
Daniel Castellanos Let’s talk ↗

PRODUCT ARCHITECTURE · ENTERPRISE AI · CASTLE & HOLD

Architecting products, AI
systems, and teams that

hold.

I’m Daniel Castellanos—a product design leader and builder with 15+ years turning complex technology into clear, human software, from Fortune 500 AI platforms to independent ventures.

Explore Selected Work Read Castle & Hold
PROVEN ACROSS
Bausch + Lomb ADP Neudesic (IBM) Kraft Heinz Datasite Anywhere Real Estate Dun & Bradstreet

01 / Studio Ventures & Production Software

What I've built, deployed, and launched.

Independent software platforms and consulting ventures designed, coded, and taken to market end-to-end. Click any card for the technical story.

0-TO-1 PRODUCT / AGENTIC ARCHITECTURE 01

Scaper

Architected and launched an on-demand property services platform built with an agentic AI developer stack, orchestrating geospatial and property data APIs (Google Maps, RentCast) to compress customer quote flows from 2 days to 30 seconds.

Read case study →
DC
MEMORY JOB · DISPATCHED 0.8 acres · Parsippany
Good morning, Emma
3 patients need your attention today
REVIEW
✦ CARE SUMMARY
ENTERPRISE SAAS / SYSTEMS

Nurse Concierge

A high-trust care platform pairing licensed nurses with workflow intelligence—reducing administrative drag while keeping every clinical decision human.

Review architecture breakdown →
Fall Valley, New Jersey
Made close to home.
Explore the valley
AGENTIC COMMERCE / VENTURE

Fall Valley NJ

Greenfield e-commerce and regional agritourism platform deployed as an experiment in multi-LLM agentic development. Built, optimized, and pushed to edge production within days, testing real-time conversion and payment pipelines.

Visit storefront ↗
02 // THE OPERATING FRAMEWORK [ SYSTEM ACTIVE · SECURE DECISION LOCK ]
METRIC: ZERO REWORK SPRINT DYNAMICS

Castle & Hold

Castle & Hold is an operational vocabulary designed to help product and engineering teams diverge on creative options, securely lock architectural decisions, and maintain execution momentum without burnout.
Select any state below to see how the cycle works:

+1 State: Diverge -1 State: Converge 0 Lock: Castle 0 Build: Hold the Line ↺ Adapt: Snag / Recast

+1 Diverge: Open up the problem space through field observation and fast AI exploration—without mistaking an early prototype for a final decision.

GENERATIVE EXPLORATION

BATTLEFIELD NOTES & FAILURE MODES

The Three Structural Vulnerabilities

[ SELECT CARD TO OPEN FIELD STUDY ]
VULNERABILITY #01
DIVERGENCE DELUSION

The IKEA Trap: Why AI
Prototypes Fool Teams

+1 vs 0 Lock Failure →
DYNAMICS #02
EXECUTION DISCIPLINE

Snag Panic: Resisting the Urge
to Blow Up the Sprint

0 Hold Defense →
FRAMEWORK #03
GOVERNANCE METRIC

Castle to Recast: The
Economics of Decision Locking

Recast Protocol →

03 / Enterprise Architecture & Career Cases

15+ years leading complex enterprise systems.

Selected corporate case studies across regulated healthcare, supply chain AI, M&A fintech, and design governance.

2024 – PRESENT
Bausch + Lomb Regulated Healthcare & Enterprise AI
Product Design Manager (w/ Chief AI Officer)
2026 & 2014–2015
ADP (Global Product & Technology) Two Tenures
Senior UX Design Consultant
2021 – 2024
Neudesic, an IBM Company Enterprise AI & Modernization
Product Owner, Lead UX & Program Creator
2020 – 2021
Datasite FinTech, Capital Markets & M&A
Principal UX Designer & Practice Lead
2018 – 2021
Anywhere Real Estate (Realogy) FinTech & PropTech
Lead UX Designer & Information Architect
2012 – 2018
IPsoft (Amelia), QTC/Leidos, Accenture & Dun & Bradstreet
UX Lead, Cognitive Lab & Innovation Lab
View the full resume here Download Resume (PDF) ↗ Download Portfolio (PDF) ↗
WORKING BELIEF / 2026

“When anyone can generate an interface, the work shifts from producing screens to designing judgment.”

DC
Daniel Castellanos
Product designer, systems builder