Seth Rosen

Seth Rosen is a seasoned entrepreneur with a passion for disrupting old-line industries through innovative ventures and acquisitions.

With a successful track record in scaling businesses, Seth acquired CustomMade.com in 2009, raised over $30M in funding, and transformed it into a leading e-commerce marketplace for custom products.

After repurchasing CustomMade.com in 2015, Seth grew it into the world's largest online custom jeweler.

He also acquired and revitalized International Gem Society and Ganoksin, establishing them as the premier websites in the gems and jewelry manufacture niches, attracting 30 million visitors annually.

Seth's earlier career in commercial real estate investment banking at Meredith & Grew saw him become one of the firm's youngest partners at just 26 years old.

Currently a venture partner at Western Technology Investment, Seth offers valuable insights as a CEO of one of their portfolio companies, leveraging his extensive experience for venture-backed businesses considering venture debt in the Boston market.

Seth holds a Bachelor's Degree in Psychology and English Literature from Boston University, along with an MBA and MST from Bentley University.

In his personal pursuits, Seth indulges in collecting American art from the 19th and 20th centuries, enjoys gemology as a hobby, and is a former cycling instructor.

His areas of expertise encompass Venture Capital, Venture Debt, Investments, Start-up Fundraising, E-commerce, Custom Jewelry, Gems & Gemology, Entrepreneurship, Business Turnarounds, and Structured Credit.