Senior Illustrator at Brilliant

A 3D digital illustration of a green, faceless superhero with a cape, set against a vibrant yellow background.

Brilliant.org

Over 10 million people learn science, math, data, and programming on Brilliant. As Senior Illustrator, Tou created engaging visuals that made those topics fun and approachable.

Senior Illustrator

Tou spent nearly four years as Senior Illustrator building the visual systems that made those lessons click, spanning content illustration, interactive diagrams, product design, and marketing.

He worked on the Art Team within the Content department, where he played a key role in shaping the visual language of the platform. The following selection highlights his work across four focus areas.

Two robots relaxing on orange couches with a potted plant in the background.

Content

Working within Brilliant's in-house illustration system, Tou created static art, animations, interactive assets, and course product icons, and owned the management of the platform's extensive asset library.

Illustration showing a light bulb, mirrors, a laser, and a camera, demonstrating reflection of light with lasers and mirrors.

Educational graphic about dice and coins, including a chart, coins, a playing card, and dice, with multiple-choice question on the number of outcomes when rolling a six-sided die.

An illustration of a magnifying glass examining a panel with red lights connected to a control device with colored buttons. Below is a quiz about identifying which lights are on based on clues, featuring a table with red, blue, and yellow columns and

Diagram of a circuit using a voltmeter to measure the voltage between points in the circuit. The circuit contains a 9V power source, three light bulbs, wires, and a black box connecting different voltages labeled 2V, 3V, and 4V.

Diagram of laser and detector setup with adjustable settings for laser, detector, and light source, including graphical interfaces and labels.

Mobile app screens showing a code-finding game with instructions and checkmarks for matching shapes and colors, with a green continue button at the end.

Interactive Diagrams

Tou designed and prototyped interactive diagrams embedded directly in Brilliant's lessons, creating the visual assets and iconography while collaborating with producers, product designers, and engineers to ensure technical feasibility and brand alignment.

Digital illustration of a colorful padlock with a purple, blue, green, pink, and yellow gradient, floating above a purple circular platform.

Product

Tou created illustration and iconography for Brilliant's feature launches, including paywalls, onboarding screens, empty states, and content metering, maintaining visual consistency across the product and design system.

Screen showing options to unlock all levels and courses or stick with limited plan in a mobile app. Illustration of a colorful, stylized key and mint-green alien-like figure with a black square, surrounded by star-like sparkles.

Mobile game screen showing the completion of Level 4 with a message saying all free levels are completed in Solving Equations, with a lock icon indicating remaining levels and a colorful lock icon in the foreground.

Mobile app screen displaying a premium course titled 'Thinking in Code' with a colorful lock icon, a button labeled 'Unlock with Premium', and navigation icons at the bottom.

Mobile app screen showing a green icon at the top, a cartoon suitcase with travel stickers in the middle, and the text 'Welcome back, Tou Yia' below the suitcase. There is a black button at the bottom labeled 'Start quick review'.

Comparison of two subscription plan pages for Brillant, featuring a mobile app interface on the left and a webpage on the right, both highlighting annual and monthly payment options, with pricing details, some awards, and a promotional banner.

Collection of 12 colorful game tokens with the number 3 on each, arranged in a grid of 3 rows and 4 columns.

A black and white line drawing of a woman with glasses and polka dot shirt talking to a boy with a hand on his chin, both appearing to be in thoughtful conversation.

Marketing

Collaborated with the marketing team to produce campaign visuals for Brilliant's newsletter and social channels, adapting the brand's illustration voice for promotional contexts.

Illustration of two children discussing math, with a background of geometric shapes and grid lines, and text reading 'Math People' and 'Brilliant', with a description of personalized AI tutoring for calculus, algebra, probability, and more.

The image shows a promotional graphic for 'Math People,' featuring an illustration of two people discussing math concepts in front of a geometric grid and shapes. The text mentions personalized AI tutoring in calculus, algebra, probability, and more,

Illustration of two people discussing math concepts in front of a grid with geometric shapes and arrows, promoting an AI tutoring service called Math People.

A digital illustration featuring two girls, one with a bun and the other with loose hair, engaging in conversation with a background of colorful geometric shapes. The text 'Math People' is prominently displayed at the top, with a small caption at the

A motivational sign with the phrase 'Know it all.' in large black text on a white background. Includes a simple black sketch of a person sitting with crossed legs and a smartphone or book. Labels underneath include 'Math,' 'AI,' 'Calculus,' 'Python,'

Educational graphic for Math Person with a drawing of a woman walking a dog, with a large pi symbol on the leash, and small text promoting AI tutoring in calculus, algebra, and probability.