New York City

Charles
Greenwald

Student, founder, builder at The Dwight School. Running ventures across marketplaces, education, and consumer products.

See the work Get in touch
Charles Greenwald speaking into a microphone in a white button-down shirt
About

Several ventures at once, on purpose.

Charles Greenwald is a student at The Dwight School in New York City, graduating in 2027. He builds and runs several ventures at once, spanning marketplaces, education, and consumer products.

Alongside his personal ventures, he is Director of Business Development at A2 Aviation and built Pabloo's course business as a founding operator at Pabloo Co. His interests span economics, finance, motorsport and automotive aerodynamics, architecture, and product design.

Ventures

Built and building.

BrushBids

Founder · 2024–present

A curated auction marketplace connecting emerging student artists with global collectors. Every sale splits 75% to the artist, 20% to platform operations, and 5% to a charity the artist chooses. Built the full technical infrastructure, curatorial review process, and brand identity from the ground up.

Started as a sketch at Dwight, developed further at the Tufts Derby Entrepreneurship Center accelerator. Won a Dwight Spark Tank grant and reached the finals (12 of 400) of the Curious Cardinals Timeless Skills competition, judged by Michael Seibel, Zarna Garg, and Laura Modi.

brushbids.com →
Charles Greenwald presenting BrushBids in front of the title slide at the Dwight School library
Pitching BrushBids at Dwight.
Charles Greenwald presenting to a seated audience in a school library
Presenting to the room.
Curious Cardinals finalist card for Charlie G., grade 11, pitching a curated auction platform for student artists
Curious Cardinals Timeless Skills finalist, spring 2026.
Curious Cardinals Timeless Skills in an AI Era pitch competition, May 2026, with support from Google.org
The competition, supported by Google.org.

Extern Academy

Founding Operator · 2026–present

An online education platform placing high school externs on real startup teams, built with the CEO of Pabloo. As Founding Operator, manages all course operations, curriculum, and marketing.

externacademy.com →

Pulse Creative Co.

Founder · 2025–2026

A marketing and advertising agency, also known as Pulsative, producing data-driven campaigns for brands. Services offered free of charge to nonprofits.

whop.com/pulsative →

LumaRest

Prototype · in development

A sleep mask concept combining progressive red and blue light sleep therapy with a separate red light skin therapy mode, each independently controllable. Minimalist, seamless matte finish with diffused rather than visible LEDs. Currently being prototyped in Autodesk Fusion 360 with self-taught 3D modeling; not yet in production.

Experience

Learning inside real companies.

A2 Aviation
Director, Business Development · 2025–present
Aftermarket aircraft rotables supplier. Researches CRAF and DoD carriers and NASA procurement contacts; outreach to airlines, OEMs, and MROs to source parts and grow the business.
Pabloo Co.
Founding Operator · 2025–present
Built Pabloo's course business from scratch: product design, curriculum architecture, funnel strategy, and first-customer acquisition.
Ricketts Taylor & Co.
Apprentice · 2025–2026
Law and advisory firm. Supported NDA drafting, legal formatting, client correspondence, and contract review.
Slate Property Group
Intern · 2024
Researched and analyzed commercial and residential real estate investments.
Skills

What he works with.

Product & Prototyping
  • Autodesk Fusion 360
  • Rhino 8
  • Adobe Illustrator & Photoshop
Web & Payments
  • React
  • Stripe
  • Three.js & GSAP
  • Replit & Netlify
Content & Growth
  • Pitch decks
  • Cold outreach
  • Social content strategy
  • Higgsfield
Business Development
  • Partnership outreach
  • Investor relations
  • Deal structuring
Education

The Dwight School, and beyond it.

The Dwight School

New York City · graduating 2027 · HL Physics, Global Politics, and Economics

  • UChicago Summer Immersion, Pathways in Economics. Macroeconomics, microeconomics, game theory, and field experiments under UChicago Economics faculty.
  • UPenn Wharton Global Youth, Product Design. Design thinking through iterative prototyping in Venture Labs.
  • Tufts Derby Entrepreneurship Center Accelerator. 1 of 100 students accepted; built a business plan for a government procurement agency and pitched it to investors.
  • Design of Speed, Bologna. Automotive engineering and aerodynamics through visits to Pagani, Ferrari, Lamborghini, Maserati, Dallara, and Ducati.
Contact

Say hello.

cog.greenwald@gmail.com

LinkedIn →

Open to conversations with investors, mentors, and collaborators. He reads everything.