Brilliant.org
Brilliant.org is an interactive learning platform focused on math, data, and computer science skills. The company has raised $25M and employs 97 people.
The growth story
Brilliant.org grew from 70 to 97 employees between 2021 and 2026, raising $25M along the way, most recently a Series C in May 2022.
About
Brilliant.org offers interactive courses that teach quantitative and technical skills through hands-on problem-solving rather than video lectures. Its approach emphasizes building foundational reasoning abilities, targeting learners in math, data science, and AI.
The company raised $25M in a Series C round in May 2022, backed by investors including International Finance Corporation and Next Play Ventures. With 97 employees, it operates from San Francisco, where it was founded in 2012.
Founders and leadership
Engineering is the largest function at Brilliant.org, with 20 employees. The company has a median tenure of 3 years, suggesting moderate employee retention.
The Brilliant.org org chart
Sue Khim (CEO and Co-founder) leads 29 mapped leaders with 4 direct reports. Click +N to expand a team; names link to the person’s public profile.
Departments, and which ones grew
Headcount by function: Engineering 32 (-6% YoY), Education 12 (+100% YoY), Arts and Design 10 (-17% YoY), Business Development 6 (0% YoY), Operations 5 (-29% YoY), Product Management 5 (0% YoY).
Talent flow
Brilliant.org hires talent from companies like Google, DataCamp, and Apple. Alumni often move to Meta, Fleetio, and Notion.
Most common previous employers of Brilliant.org staff: Google (4), DataCamp (3), Apple (2), Mystery.org (2), Hellosaurus (2), Leaders In Tech (2). Former Brilliant.org employees most often moved to Meta (4), Fleetio (3), Campus (2), Notion (2), Grid Status (2), BreakLine (1).
Alumni worth knowing
The Brilliant.org mafia
Brilliant.org alumni have founded 8 companies, including BreakLine (165 staff), RealRoots (132 staff), and Voltage Park (43 staff).
8Bethany Coates, was Board Advisor until 2015Tara Kappel, was VP Product until 2024Ozan Kaya, was Advisor until 2022Aditya Sheth, was SEO Advisor until 2021Paola Martínez, was Senior Product Manager - Lifecycle & Retention until 2025Mihran Vardanyan, was Director of Marketing until 2019
Dipesh KC, was Software Engineer until 2025
Sterling Jr, was Freelance Writer until 2021Web traffic
Traffic mix: 48% direct, 21% search, 15% social, 3% paid.
What this company is made of
Most common skills at Brilliant.org: Python (Programming Language) (25), JavaScript (20), SQL (19), Microsoft Office (17), Research Skills (17), Cascading Style Sheets (CSS) (16), Java (15), Git (14).
Where the team actually sits
Brilliant.org people are concentrated in California, United States (15), New York, United States (9), New York City Metropolitan Area (4), San Francisco Bay Area (4).
Search footprint
Brilliant.org attracts about 516,200 organic search visits a month, traffic worth roughly $287K a month if bought through ads. It gained 42,689 ranking keywords and lost 39,605 in the last period.
What employees say
- Compensation
- 4.60 / 5
- Career opportunities
- 4.60 / 5
- Senior management
- 4.70 / 5
- Work-life balance
- 4.50 / 5
Frequently asked
Brilliant.org has 97 employees as of September 2026.
Brilliant.org has raised $25M in total, most recently a Series C round in May 2022.
Brilliant.org was founded in 2012 by Sue Khim, Silas H..
Sue Khim (CEO and Co-founder) sits at the top of Brilliant.org's reporting structure, with 4 direct reports.
The most common previous employers of current Brilliant.org staff are Google (4 people), DataCamp (3 people), Apple (2 people).
Former Brilliant.org employees most often move to Meta (4), Fleetio (3), Campus (2).
At least 8 companies have a founder who previously worked at Brilliant.org, including BreakLine, RealRoots, Voltage Park.
Brilliant.org attracts about 516,200 organic search visits a month, worth roughly $287K a month in equivalent ad spend.
The most common skills among Brilliant.org staff are Python (Programming Language), JavaScript, SQL, Microsoft Office, Research Skills.
Brilliant.org staff are concentrated in California, United States (15), New York, United States (9), New York City Metropolitan Area (4).
Brilliant.org has about 32 people in Engineering, down 6% over the past year, as of September 2026.
Brilliant.org has about 12 people in Education, up 100% over the past year, as of September 2026.
Computed from 68 current and 165 former Brilliant.org profiles, as of September 2026. Source: Crustdata.
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