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EdTech Platform
Korean Language Learning Platform
Three connected products — live online classes, a campus site, and a pronunciation-training mobile app — served by a single backend.
Company
Language Education Provider
Timeline
8 months
When
2026
Category
EdTech Platform
Project Overview
The client taught Korean both online and on campus, but the two ran as disconnected systems: a student who paid for online classes was invisible to the offline campus. We consolidated everything into one monorepo sharing user, payment and enrolment data, and added a self-hosted speech engine so learners get pronunciation feedback without a tutor in the room.
Problems
what the client was living with
01
Dual Revenue Streams, Zero Visibility
Online subscribers and campus students were tracked in separate spreadsheets. The client could not tell which channel generated more lifetime value, or whether a student had tried both.
02
Manual Enrolment Reconciliation
Every payment had to be cross-referenced by hand between the online gateway and the campus ledger, consuming hours each week and producing frequent errors.
03
No Pronunciation Feedback at Scale
Learners practicing alone had no way to know if their pronunciation was correct. Tutors could only correct students during live sessions, leaving self-study largely unguided.
The Challenges
What we faced during work:
01
Disconnected Systems
Online and offline operations held separate records of the same students.
02
Pronunciation Without a Tutor
Meaningful speech feedback normally requires a human listener.
03
Three Frontends, One Dataset
A live-class platform, a marketing site and a mobile app all needed the same user and payment data.
04
Scheduling & Payments
Class links, subscriptions and enrolment had to work together reliably.
05
Mobile Data Sharing
The app had to reach the same enrolment and payment records as the web products.
What We Did in a Nutshell
Work flow scenario:
- 01Discovery & Research
- 02Monorepo Architecture
- 03Shared Data Model
- 04Backend & Queue Development
- 05Live Class Platform
- 06Campus Marketing Site
- 07Mobile App Development
- 08
The Solutions
The outcomes:
01
One Shared Backend
A single API serves all three products from one dataset.
02
Automated Pronunciation Feedback
A self-hosted scoring engine using spectral analysis, dynamic time warping and pitch tracking.
03
Unified Student Record
Online and campus operations finally see the same student.
04
Integrated Payments & Scheduling
Subscriptions and video-class links handled inside the platform.
05
Shared Mobile Experience
The app reads the same enrolment and payment data as the web.
Client Feedback
We love to hear back from our clients:
“We went from running two separate businesses to one platform that tells us exactly what every student is doing, online or on campus. The pronunciation engine alone replaced hours of tutor feedback per student each week.”
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