Great Entrepreneurs with RJ Lumba

In this episode, we speak with Manos Koukoumidis, Co-Founder and CEO of Oumi, an open AI platform helping enterprises build specialized models they can own and control. Oumi is designed for organizations that want to move beyond renting generic foundation models, giving teams a way to evaluate model performance, create training data, train specialized models, and continue improving them around their own business needs.
Before founding Oumi, Manos led major generative AI efforts at Google Cloud, including the work that became PaLM and later Gemini. His background also includes roles at Meta and Microsoft, along with research experience at Princeton and MIT.
I am your host, RJ Lumba. We hope you enjoy the show. If you like the episode, click to follow.

In this episode, we speak with Nishant Hari, Founder and CEO of Predoc, an AI-native health information management company built to make patient records easier to retrieve, organize, and use. Predoc helps healthcare organizations move beyond manual record collection by combining AI with human-in-the-loop support, turning fragmented medical records into structured data that care teams can use before a patient visit. The company has processed more than 10 million pages of data and served over 1 million patients.
Prior to founding Predoc in 2022, Nishant spent nearly a decade in finance and derivatives trading at institutions including Citi and HSBC. He transitioned to healthcare after witnessing the day-to-day workflow bottlenecks faced by his wife, a practicing physician, and subsequently built Predoc alongside clinical and technical co-founders to reduce administrative burden and accelerate access to complete patient information.
I am your host, RJ Lumba. We hope you enjoy the show. If you like the episode, click to follow.

In this episode, we speak with John Fees, Co-Founder and CEO of GradGuard, an embedded insurance platform built for the collegiate market. GradGuard works with more than 700 colleges and universities to embed tuition and renters insurance directly into the enrollment and billing process. By clearly explaining refund policies at the moment families are making financial decisions, the platform protects students from financial losses due to unexpected illness, injury, or mental health challenges.
Prior to GradGuard, John built multiple companies at the intersection of higher education, financial services, and technology, including Y2M, a college media and student lending platform later acquired by Viacom’s MTV Networks.John supports
The Jed Foundation. To learn more about this organization click here.
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In this episode, we speak with Todd Greenbaum, President and CEO of Input 1. Input 1 is a digital billing, payments, and premium finance technology provider that helps carriers, MGAs, brokers, and banks manage the full inbound premium process across the insurance lifecycle. Today, the platform supports roughly $16 billion in annual premium activity, reaching millions of policyholders and insurance customers.
Todd joined Input 1 shortly after its founding in 1984, stepping into the role of President in 1990 before later becoming CEO. Over his tenure, he has focused on operational discipline and customer experience, bootstrapping the business from its earliest software system into a long-running industry leader.
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In this episode, we speak with Irina Denisenko, Co-Founder and CEO of Knox Systems, a government cloud security and compliance company helping SaaS and AI providers meet FedRAMP requirements so they can sell into U.S. federal agencies.
FedRAMP is the cybersecurity standard required for cloud software to handle sensitive government data. Knox shortens the path by bringing companies into its FedRAMP cloud, where they can reuse existing authorizations and move through the process in 90 days. The company has 16 sponsors across federal agencies and has taken 60+ companies through FedRAMP, with Adobe and Class among its early customers.
Before founding Knox, Irina was COO of Class Technologies and encountered the FedRAMP process firsthand, which led to Knox’s spinout as an independent company.
I am your host RJ Lumba. We hope you enjoy the show. If you like the episode click to follow.

In this episode, we speak with Hans Keirstead, Chairman of the Board at Immunis, a clinical-stage biotechnology company developing stem cell-derived biologics to address age-related diseases and immune dysfunction. Immunis’ investigational therapy, IMM01-STEM, is a stem cell-derived secretome designed to modulate immune health and improve muscle mass and function, with initial clinical work focused on sarcopenia-related conditions. 
Hans is a stem cell researcher and biotech entrepreneur with prior experience developing therapies across neurology, immune disorders, and oncology. He previously served as a full professor of anatomy and neurobiology at UC Irvine and has held leadership and board roles across multiple biotechnology organizations.
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In this episode, we speak with Jamie Hale, CEO and Co-Founder of Ladder, an insurtech company focused on making life insurance faster and easier to purchase online. Ladder offers a digital application experience built around speed and simplicity, with real-time underwriting that can result in on-the-spot coverage and a process designed to be completed from home.
Jamie co-founded Ladder in 2015 after a career spanning investing and financial services, including roles as a founding partner at Aldenwood Capital and as a partner at Oak Hill Investment Management. Earlier, he worked on new product development at NextCard.
Jamie supports CASA. To learn more about this organization click here.
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In this episode, we speak with Ryan Stroker, Founder and CEO of Avenue One, a technology platform that connects institutional debt and equity capital with local real estate operators investing in single-family rental housing. Avenue One uses data, analytics, and underwriting technology to support acquisitions, financing, renovations, and asset management, enabling institutions to deploy capital more efficiently while giving local builders and property owners access to scalable funding. The platform operates across more than 20 U.S. markets and supports investments in residential rental portfolios at scale.
Before founding Avenue One, Ryan spent years in capital markets and residential real estate investing, including senior roles at Amherst, Royal Bank of Scotland, Merrill Lynch, Credit Suisse, and Goldman Sachs.
I am your host, RJ Lumba. We hope you enjoy the show. If you like the episode, click to follow.

In this episode, we speak with Brad Stroh, Co-Founder and Co-CEO of Achieve, a digital personal finance company focused on helping consumers manage, reduce, and resolve debt. Achieve operates a multi-product platform that includes debt resolution, personal loans, home equity lending, and financial education tools designed to support consumers across different stages of financial health. The company serves individuals navigating high-interest credit card debt, affordability challenges, and long-term financial stability.
Stroh co-founded the business in 2002 as Freedom Financial Network and has led its evolution into Achieve, overseeing the expansion from a single solution into a broader personal finance platform. He brings decades of experience building consumer financial services businesses and working across lending, debt resolution, and capital markets.
Brad supports USA Lacrosse. To learn more about this organization click here.
I am your host, RJ Lumba. We hope you enjoy the show. If you like the episode, click to follow.

In this episode, we speak with Mike Suiters, Co-Founder and CEO of Positive Development, a provider of developmental therapy for children with autism. Founded in 2020, the company offers a comprehensive model that integrates speech, occupational, and mental health therapies, serving more than 1,000 families nationwide. 
Positive Development has become the nation’s largest provider of developmental therapy, focused on improving access, affordability, and quality of care. Mike co-founded the company after working at Sandbox Industries’ Blue Venture Fund, where he helped identify innovative healthcare solutions. 
I am your host RJ Lumba. We hope you enjoy the show. If you like the episode click to follow.