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Postdoctoral scientist in Dr. Onohara’s laboratory at Nationwide Children’s Hospital and clinically trained cardiovascular surgeon with over ten years of experience in valvular heart disease and heart failure. My research focuses on translational cardiovascular device development for advanced ischemic heart failure and functional mitral regurgitation, with particular emphasis on minimally invasive ventricular reshaping therapy. I have hands-on experience in large-animal cardiovascular surgery, chronic swine models of ischemic cardiomyopathy, transapical device implantation, echocardiographic assessment, invasive pressure-volume loop analysis, and tissue-level evaluation of myocardial remodeling. Since joining Dr. Onohara’s laboratory in 2024, I have dedicated my work to developing and evaluating a left ventricular reshaping device in a six-month post-infarction swine model of advanced heart failure. My long-term goal is to become an independent physician-scientist, integrating clinical cardiovascular surgery with translational research to develop less invasive and more effective therapies for valvular disease and heart failure.

Security professional with 7+ years of experience in investigations, risk analysis, and operational security across corporate and military environments. U.S. Army veteran with active Secret Clearance and current experience in a Global Security Operations Center (GSOC) while finishing a Master of Public Administration in Disaster Management. Proven ability to conduct investigations, analyze incidents, and support loss prevention strategies. Strong background in security operations, incident response, intelligence assessment and analysis, and cross-functional coordination to mitigate risk and protect assets.

Professional military candidate with track record of success in high-stakes environments. Skilled in tactical operations, strategic planning, and leadership. Strong focus on team collaboration and mission accomplishment. Reliable and adaptable, with expertise in weapons handling, physical fitness, and situational awareness.
Organized and detail-oriented Investigator dedicated to improving efficiency, productivity and profitability through continuous process improvement. Analytical thinker skilled at developing innovative solutions to complex problems.

Every architecture decision I make is guided by two key questions:
“What truly needs to be done?” and “What does the user genuinely want?”

With over 16 years of experience in backend development and cloud architecture, I design solutions that are resilient, scalable, observable, and ready for change.
My approach emphasizes automation over repetition, fault-tolerance over assumptions, and clarity over complexity.
I believe a system should not just run — it should be able to recover, adapt, and evolve.

“Functionality is not the end goal. Creating value through thoughtful architecture and meaningful user experiences is.”

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JungHyun Ryu

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