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Jonathan Martinez

Cognitive UX Designer & Consultant with nearly a decade of experience.

I built Sentinel AI + Context OS to deliver quality outputs

Sentinel AI is a Custom GPT powered by Context OS. Subscribe to gain instant access to a dynamic AI system.

Flagship Projects

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Independent Consultant
2017 — Present JM The Creative

I worked as a high-trust, high-touch consultant for founders across B2B, SaaS, fitness tech, social, and consumer product spaces. Whether working with early-stage teams or collaborating adjacent to companies like Google and Waze, my focus was always the same · turn abstract concepts into clear, buildable systems. I guided founders through decisions, clarified messy ideas, and delivered work that actually moved their products forward.

Sr. UX Designer
2020 — 2021 Echelon Fitness Multimedia

At Echelon, I contributed to new style guides and helped shape a mobile interface that connected seamlessly to their fitness mirror hardware. My work supported a major partnership with Dick’s Sporting Goods · refining the user experience and elevating how the brand presented itself across platforms.

UX Designer
2016 — 2017 Concepta Inc.

This role introduced me to agency life in the Orlando tech ecosystem · serving both enterprise clients like Disney and Universal, as well as long-standing local businesses. As an entry-level designer, I learned how to translate real business needs into practical design solutions · gaining hands-on experience with clients who relied on clarity and fast, focused delivery.

Graphic Designer
2015 — 2016 Minuteman Press

Before UX, I learned design from the ground up through print · doing everything from graphic layout to bindery work, book production, signage, and mass-printing. Working in a production environment taught me discipline, precision, and how to create for real people and real use cases · skills that still shape how I build digital systems today.

Context OS

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Building Context Layers Post feature image

Building Context Layers

The Field of Context · Issue 2

4 min read
The Field of Context — Prelude Post feature image

The Field of Context — Prelude

Context Engineering · Issue 1

2 min read
Stacking Mods: Craft.do Post feature image

Stacking Mods: Craft.do

Conversational Training · Episode 4

3 min read
Train Your AI: Charter Mods Post feature image

Train Your AI: Charter Mods

Conversational Training · Episode 3

3 min read

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