Portfolio

Proof of shipped work.

Curated public work across health AI, clinical product design, protocol infrastructure, FlutterFlow, consumer apps, and founder-operated systems.

This page only uses projects and assets marked public in the local source data. Private evidence and application history stay outside the published site.

Google Calendar reserves the time only; I confirm fit and payment details before the session is locked in.

Health AI
Protocol systems
Mobile products
Founder-led execution

Public Projects

Work that connects clinical judgment and execution.

A curated set of projects useful for website visitors, collaborators, hiring teams, and Upwork-style proof of work.

Nakama Health public website portfolio screenshot.
Current 2024 to present

Nakama Health

Founder, product builder, AI systems architect

AI-native health protection platform for proactive, continuous care, member workflows, health-data context, and trusted operational tooling.

Built around medical reasoning, AI agents, protection-pool design, clinical product boundaries, and founder-led product execution.

health AIAI systemsclinical UXproduct strategyhealth-data workflows
Nakama Protocol portfolio screenshot.
Current 2024 to present

Nakama / OmegaX Protocol

Founder, product architect, protocol builder

Protocol infrastructure exploring provenance, coordination, incentives, and transparent health protection workflows.

Public developer-facing work across protocol design, TypeScript tooling, product constraints, and system architecture.

SolanaTypeScriptprotocol designhealth fintechdeveloper tooling
Kovenu portfolio cover.
Current 2025 to present

Kovenu

Product builder, AI workflow designer

Consumer AI health coaching app focused on continuous support, context, and behavior change inside the Nakama/OmegaX ecosystem.

Work spans product positioning, AI coaching flows, health behavior UX, and integration into a broader protection stack.

AI coachingconsumer healthbehavior designproduct strategyapp UX
OmegaX Health FlutterFlow app portfolio screenshot.
Legacy precursor 2023 to 2024

OmegaX Health FlutterFlow App

FlutterFlow expert, product builder, health app designer

Cross-platform health app prototype with onboarding, authentication, health goals, data feed, chat components, profile screens, and Firebase infrastructure.

Proves hands-on FlutterFlow delivery in healthcare, not only advisory or product strategy.

FlutterFlowFirebasehealth appsmobile onboardingchat UX
NAOMI mental wellness portfolio cover.
Past 2020 to 2024

NAOMI Mental Wellness

Founder, product lead, MVP builder

Accessible CBT-oriented mental wellness platform built with psychologist collaborators.

Raised $60,000 in venture capital, reached 20,000+ downloads, and translated therapeutic concepts into user-facing digital flows.

mental healthCBTmobile appsstartup leadershiphealthcare UX
Luana Health portfolio cover.
Past 2018 to 2022

Luana Health

Founder and CEO

AI-powered lifestyle management chatbot system for cardiovascular health support.

Built with clinicians in the United States and Slovenia; MVP used by 150 patients across Croatia and the United States.

AI chatbotsdigital therapeuticscardiovascular healthclinical collaboration
Cardi Ball portfolio cover.
Past 2022 to 2023

Cardi Ball

Founder, medical product builder

Smart home medical-device proof of concept for patient monitoring and engagement.

Collaborated on PCB and sensor exploration involving ADC ICs, EKG, and PPG; showcased at ACAP 2022 in New York City.

medical devicespatient monitoringEKGPPGclinical product design
Strong Heart portfolio cover.
Past 2022 to 2024

Strong Heart

Founder, app builder, medical product designer

Digital hypertension management app with Google Fit and blood-pressure monitor integration.

Focused on helping patients connect blood pressure, behavior, and continuous cardiovascular risk management.

hypertensionmobile appsGoogle Fitconnected devicescardiovascular health
dr-sabijan.com portfolio cover.
Current 2026

dr-sabijan.com

Site owner, product strategist, builder

Personal authority and consulting site for work at the intersection of medicine, AI product development, and health systems.

Includes service positioning, writing, selected work, SEO metadata, links, and a booking funnel for AI systems calls.

static siteSEOpositioningCloudflare Pagescontent systems

Credentials

Education, research, and programs.

Public credentials that support the clinical, AI, and product story without exposing private application evidence.

education

Doctor of Medicine

University of Zagreb School of Medicine · 2024

publication

DBS/Parkinson's biomarker research

University of Zagreb School of Medicine Repository · 2024

program

HelloAI Summer School: Application of AI in Healthcare Practice

Leitat, GE Healthcare, KTH, EIT Health · 2024

program

BCI & Neurotechnology Spring School 2023

g.tec medical engineering · 2023

certification

Enterprise Design Thinking Practitioner

IBM

certification

Agile Project Management

certification

Business Branding With Personality

Portfolio Recommendations

What people who built with me say.

From clients and the teams I have shipped products with. Each one is verifiable on LinkedIn.

Working with Marino has been a masterclass in vision and execution. He doesn't just understand health tech, he's shaping where it's going. His ability to connect data, context, and intelligence in a way that actually impacts people's lives is rare to find.
Nemanja Miljkovic

Brand strategist for founders · Client

He is a very creative and resourceful colleague who shows great technological knowledge. Although he is primarily a medical professional, his sense of design, user experience and project management certainly sets him apart from his peers.
Nikolina Kanceljak

Psychologist, PhD · Co-founder, NAOMI mental wellness · Worked together

Marino consistently demonstrated exceptional leadership and expertise in the healthcare technology space. His innovative approach and dedication to high standards ensured the success of the project.
Armando K.

AI systems & intelligent media · Built Luana together

Marino is an intelligent and deeply creative person. He is easy to work with and understands technology well, which made my work extremely easier. What a great professional to have as a client.
Antonio Butković

Android developer, Sofascore · Client

Open a channel

Need a physician-builder for an AI product or workflow?

Send the project, current bottleneck, and decision you need to make. I will route it to the useful next step.

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Google Calendar reserves the time only; I confirm fit and payment details before the session is locked in.