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James Thomas

Founder

Founder at Dialect · Founder at Radical

Seattle, Washington, United States

FoundedDialect · YCRadical · YC

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About

James Thomas is Co-Founder and CEO of Radical, which develops high-altitude solar-powered aircraft. He previously spent six years at Amazon Prime Air working on aerodynamics and aircraft design for delivery drones.

Founder at DialectYC S22

Intro paths

YC

James went through Y Combinator (Summer 2022) — any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Nicolas Dessaigne, General Partner at Y Combinator — the partner who ran Dialect's batch and knows the company first-hand. YC profile ↗

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In turn, James can intro founders to Dialect's investors below.

Dialect's investors · 11

AsymmetricMiami · $10K – $1M checksCaffeinated CapitalSan Francisco · $3M – $50M checksCoatue ManagementNew York · $1M – $20M checksJump CryptoChicago · $500K – $15M checks · since 2022Menlo VenturesSan Francisco · $1M – $20M checksMulticoin CapitalAustin · $1M – $50M checks · since 2022Otium CapitalParisPioneerToronto, OntarioSequoia CapitalMenlo Park · $100K – $50M checksSoma CapitalSacramento · $100K – $300K checksY CombinatorSan Francisco · $500K checks · since 2022

Co-founders at Dialect

TGTony Ginart
Tony GinartFounder
TSTejas Sundaresan
Tejas SundaresanFounder
COChris Osborn
Chris OsbornFounder

Founder at RadicalYC W23

Intro paths

YC

James went through Y Combinator (Winter 2023) — any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Jared Friedman, YC Group Partner — the partner who ran Radical's batch and knows the company first-hand. YC profile ↗

→

In turn, James can intro founders to Radical's investors below.

Radical's investors · 11

Andreessen HorowitzMenlo Park · $500K – $50M checksBessemer Venture PartnersSan Francisco · $50K – $100M checks · since 2026BoxGroupNew York · $250K – $1M checks · since 2026ConvictionSan Francisco · $1M – $25M checks · since 2026Entrepreneur FirstBengaluru · $1M – $7M checksInflection.xyzBoston · $500K – $2M checksRadical VenturesToronto · $1M – $25M checks · since 2026Scout VenturesAustin · $2M – $5M checksScout VenturesAustin · $2M – $5M checksVertis SGRNaplesY CombinatorSan Francisco · $500K checks · since 2023

Co-founders at Radical

CNCyriel Notteboom
Cyriel NotteboomFounder
SJ
Simone JensenFounder

Frequently asked questions

Who is James Thomas?
James Thomas is Co-Founder and CEO of Radical, which develops high-altitude solar-powered aircraft. He previously spent six years at Amazon Prime Air working on aerodynamics and aircraft design for delivery drones.
Where does James Thomas work?
James Thomas is Founder of Dialect and Founder at Radical.
What companies did James Thomas found?
James Thomas founded Dialect, Radical.

Founder mafias

Dialect mafia2

Also came through, then founded or led a company.

Chris OsbornFounderFounded Dialect

Radical mafia2

Also came through, then founded or led a company.

Alexander LangeInvestorFounded Inflection

About this profile. Compiled from public sources — Dialect's own website and public professional profiles — and summarised by Fundraising Fox; every fact is kept with where it came from. Spotted an error, or would rather not be listed? Email privacy@fundraisingfox.com · How we build profiles · Your rights