Hey, I'm Marcos Rezende.
I design and build agentic AI systems people can supervise, trace and reverse.
I work on complex products shaped by technical constraints and human judgment. I turn ambiguity into clear experiences teams can ship and scale.


I'm a Product Designer with over 15 years of experience making complex products easier to use. Much of my work revolves around AI, from agentic systems to automation and human-in-the-loop workflows.
At Hive, I design automation for a global event marketing platform. I use Claude Code and native MCP to build reusable, production-ready design-system components. I stay hands-on from design to code.
Before that, I led AI experiences within Microsoft. I've also worked on machine learning and automation at Qlik, on government platforms, and with startups through Toptal. Earlier in my career, I ran my own design practice and worked at brand agencies, where I learned to defend design decisions directly to the people paying for them.
Outside work, you'll find me mentoring, writing, practicing aquascaping, building AI side projects, and always learning something new.
Selected work
Here is a sample of user-centric design initiatives I've worked on.
PRIVACY & SECURITY · IOS APP
A privacy-first iOS app that detects recording-capable eyewear over Bluetooth and answers questions about your detection history on device, with zero server calls.
ENTERPRISE SOFTWARE · B22 SAAS
A brand-new card system for SharePoint's ranked news feed, where card size signals relevance and each background colour is generated from the article's own image.
ED TECH · AI PLATFORM
Design system, model output, review console, and governance surfaces for AI essay grading at national-exam scale. Shipped, in production, and awarded for its audit instrument.
ENTERPRISE AI · B2B SAAS
An AI audio briefing for enterprise news across Teams and SharePoint, where employees hear the top stories hands-free, and Copilot becomes part of the workday.
DATA & AUTOMATION · IPAAS
A no-code platform that helps users to automate analytics and data workflows, integrating with hundreds of SaaS apps to improve efficiency.
GOV TECH · REGULATORY PLATFORM
A user-centred redesign of Canada's official regulatory platform, simplifying how citizens search, read, and submit comments on proposed regulations through data-informed research and iterative usability testing.
Design Approach
I start in the messy part, asking questions to figure out what’s actually worth solving. From there, I explore different directions, prototype ideas, then make the case for what works best. With AI in the mix, I consider technical constraints, user needs, and business goals from day one.








Skillset
I work across product strategy, AI interaction, and functional prototyping, turning complex systems into experiences people can understand, trust, and use.
AI Lab ✦˙
A peek into my experimental sandbox, where I explore ideas at the intersection of Artificial Intelligence + Design.
Endorsements
What others say about working with me
"Marcos Rezende brings systems thinking and calm clarity to complex spaces. His product judgment, accessibility and design-system rigor, and habit of shipping reusable artifacts accelerated the design process while enabling others to succeed."

Senior Content Designer
at Microsoft
"Marcos Rezende’s approach to agentic technologies is exactly the kind of production style others should study and emulate. He tests quickly, learns openly, documents generously, and brings culture with him wherever he goes.”

Principal Product Designer, Design Systems
at Microsoft
“Out of 300 employees enrolled in the AI prototyping programme, Marcos was the most engaged one. He built working AI prototypes, coached colleagues, and helped the programme exceed its goals. He is the kind of designer who does his best work when the problem is still wide open.”

Growth Product Management
at Microsoft
"I worked with Marcos Rezende in Brazil, and together we were responsible for great and award-winning projects. He was always kind, patient, dedicated, and reliable through and through. I would certainly recommend him again in the future."

Principal Product Designer
at All Human
"Marcos Rezende is one of the most user-centered designers I’ve ever worked with, with a rare ability to move between deep craft excellence and high-level UX strategy while bringing a thoughtful, human-first mindset to every problem.”

Former UX Manager
at Qlik
"Marcos Rezende is an incredible UX designer. I was impressed with his ability to think outside the box and find innovative solutions to problems. His positive attitude and collaborative spirit would be a true asset for any position."

UX Manager
at LeapUX