Ethan O'Sullivan

Hello, I'm

Dia duit, tá mé

Hola, yo soy

Привет, я

Bonjour, je suis

Wah gwaan, mid

I create digital products at Fact Maven, write on Medium, build music playlists for all occasions, and contribute to open-source whenever I can.


Ethan O'Sullivan with his first PC

Ethan O'Sullivan, son of Irish immigrants, is born and raised in The Bronx, New York.

Ethan's fascination with product and technology began at an early age. He learned how to code in the seventh grade and developed a browser-based game. At its peak, it had 3,000+ active players.

That fascination became a career. In 2011, he started his own freelance business called Fact Maven. For [work_experience]+ years, Ethan has developed versatility in many roles with big name companies such as ViacomCBS and Anheuser-Busch. As a result, he calls himself an "all-in-one product Swiss knife" because of his well-rounded knowledge in many roles, tools, and industry knowledge. That's why Ethan is the go-to between tech and business by being the technical person who can talk to non-technical people.

During his downtime, Ethan enjoys a variety of hobbies. You can find him creating music playlists, writing articles, enjoying craft beers, or playing RPG video games. Between the seasons, Ethan takes advantage of them by skiboarding, scuba-diving, or playing tennis.

Brands I've





Learned From

Fact Maven
Latent Knowledge
EPAM Systems
The Shade Store
  • "Ethan has always brought a fresh perspective and clarity to our end goals. He was also able to decipher my vision by asking a few very deliberate questions and in turn provide a directional point of view. In addition you couldn’t ask to work with someone friendlier who always demonstrated a consistent positive attitude."

    Jorge Mendoza Jr

    Jorge Mendoza Jr

    Director of Sales, The Shade Store

  • "Ethan played a critical role on the Partner Platform team for the past few years. As a product specialist, his duties were a blend of product, ops, and BA. He implemented a data analysis tool that was critical in our product launch. Ethan is also an excellent team member, organizing team lunches and bonding activities."

    Kim Pham

    Kim Pham

    Director of Product, ViacomCBS

  • "Ethan from Fact Maven helped to re-brand the salon where I work by giving our online presence a much needed makeover. Ethan is extremely patient and detail oriented, helping myself and my boss (the owner) to feel very involved in the process. The finished product is an amazing step up from the website we were previously using."

    Stephanie Zogan

    Stephanie Zogan

    Coordinator, Salon Zoe

  • "For years we have been putting off partnering with a firm to design our company’s website. If we would have known how simple Ethan could make the process, we never would have delayed. He is has great intuition, and was able to create a professional, attractive, and effective design that we are truly proud of. Ethan your care and creativity are greatly appreciated."

    Robert Waas

    Robert Waas

    CEO/CIO, RSW Investments