Hi! this is team CLASSUM. Welcome to our recruitment page!
In April we received over $6M of Series A investments from investors in Silicon Valley and South Korea. More than 4000 education institutions, schools, and corporations including Samsung and Shiseido, across 24 countries are using CLASSUM.
Recently, Classum was listed under Forbes Asia 100 To Watch, indicating its rapid growth at the global scale.
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Recruitment positions

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Our Tech

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For all Classum team members
Web development
App development
Backend development
Marketing/Growth hacking
Product management

How Do I Join?

Documents: CV (required), portfolio (required for design positions, free form), additional documents to supplement your application (to your discretion)
Address: Seoul Gangnam-gu Teheran-ro 2Gil27 Vision Tower
Start date and salary: negotiable
Applications and inquiries:

About Our Company

Have you ever held back from asking a question because you didn't want to attract attention to yourself?
Have you ever held back from asking a question because you thought that everyone else already knew the answer?
Classum is a class communication platform that makes interactions between students and teachers easy, simple and smart. Classum is often called the "Slack" or "KakaoTalk" of the education industry.
94% of Classum users indicated that their learning efficiency increased, while 77% said that they were able to get closer to their teachers and teaching assistants.

About Our Team

Extraordinary results: Over 6000 education institutions including Samsung Life Insurance, SK Hynix, World Vision, the Incheon Metropolitan Office of Education, Woongjin, DB Group, Dong-a Ilbo, and Hyundai Department Store are using Classum.
Going global: 25 countries including Korea, Japan and the US are using Classum.
Working on your terms: At Classum, we have high standards for achievement focus on what really matters. Those who are complacent at the bare minimum or have a passive approach are not a good fit for Classum.
No need to care what others think: We communicate our thoughts and opinions freely at Classum for better results.
Endless improvement: Improve on yourself everyday working next to talented and accomplished colleagues


1. Come into work any time between 8-10AM.
2. Optimal location (1 minute from Exit 3 of Gangnam Station, Fast Five)
3. Vacation registration system (no need to apply or receive approval, just notify your team members beforehand)

Growth Benefits

Personal development

Funding for books
Funding for personal education (job training, business English lessons, etc.)
Funding for job-related seminars, webinars, conferences, etc.

Team development

Chapter Inspiration Day (once a period)
Every four months, each Chapter can take an afternoon to do an activity of their choosing (expenses covered). *Your Chapter is your team
2. Meal budgets for Squads
Squad meals (expenses covered)
*Squads are sub-teams within the Chapter


Vacation days
10 days of paid leave after 3 years and 30 days of paid leave after 6 years
Receive a birthday present each year to celebrate your special day.
Professional 1:1 counseling available
Guest Talk
We invite a guest speaker every quarter. We are always open to hear your suggestions or recommendations for guests!
Office snacks (Feat. Coffee machine & toaster)
Snack Bar available
Coffee machine, milk, kombucha, tea, cereal, etc.
Toaster (mini oven) with various condiments (Nutella, jam, etc.)

Classum office tour

Clean and spacious working space
Classum office in the daytime
At Classum we take off our shoes before entering we use a steam cleaner
Classum office at night
Welcome to CLASSUM
Work spaces
Soundproof meeting rooms
Coffee machinemilkcerealmicrowave refrigerator
A great place to help you focus
No need to step outside for phone calls
Resting areas
Bean bag chair
Resting corner
Hip lounge Unlimited beer and unmanned convenient store
Massage chair in our recharging zone
There is a gym/pilates center and a Starbucks on the 1st floor of the building and many delicious restaurants nearby!


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+82) 2-6091-2897