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The latest AI and developer news from Toss, with short summaries.

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Beyond Tools, Toward Standards and Accountability

Toss went beyond simple documentation tools and built a governance system to secure the reliability of knowledge while collaborating with AI.

·2026.06.23 11:00

PickTechnical Writer, Decides to Disappear

Toss's Technical Writing partner introduces a journey of using AI to automate document writing and review processes.

·2026.06.23 11:00

es-toolkit, From a Small In-House Library to a Globally Used Library

This covers how es-toolkit, created by Toss to address the inefficiencies of lodash, grew into a globally used open-source library.

·2026.06.22 21:00

es-toolkit: How a small internal library became a global library

Introduces the achievements and development principles behind es-toolkit and other open-source projects developed by Toss.

·2026.06.22 17:00

Why Does Our Team's Documentation Fail? (2)

Toss shared strategies for lowering the psychological barriers to knowledge sharing and using AI to improve documentation efficiency.

·2026.06.22 11:00

PickWhy Our Team's Documentation Fails (2)

Toss lowers the psychological barriers to asking questions and sharing knowledge, and leverages AI to improve documentation efficiency.

·2026.06.22 11:00

Why Does Our Team's Documentation Fail? (1)

This analyzes the problems of fragmented knowledge within organizations and the low priority given to documentation, and explores solutions through interviews.

·2026.06.22 11:00

If You Told Designers to Build Anything with AI

Toss's Design Chapter introduces four practical ways designers actually use AI, as revealed through the AI Contest.

·2026.06.19 21:00

Spark Connect on Kubernetes #1: Building a Robust Spark Connect

Toss Securities shares the technical challenges and solutions for operating Spark Connect as a stable service in a Kubernetes environment.

·2026.06.19 16:00

PickMoving Beyond Expertise

Toss Technical Writers have built the in-house knowledge platform 'todoc' to solve the problem of knowledge fragmentation and are aiming for an AI-based automated knowledge management system.

·2026.06.19 11:00

Creating a Job That Didn't Exist Before

Toss's Technical Writing Chapter is evolving beyond simple documentation into a role that designs the organization's knowledge infrastructure.

·2026.06.19 11:00

Designing the Daily Work Routine

A Toss Bank designer shares the experience of directly designing and implementing an AI-powered custom widget to solve the repetitive task of organizing to-dos.

·2026.06.17 14:00

How AI Reversed the Order of Product Design

Instead of writing scenarios first, Toss adopted a reverse-order design approach using AI, designing and validating the experience first.

·2026.06.17 13:00

Why a designer built an app instead of a mockup

A Toss designer shares the experience of using AI to directly implement in code a new interaction-focused component called 'underlay'.

·2026.06.16 10:00

User Segmentation Understanding 28 Million MAU, TUES

Toss introduces TUES, a user segmentation framework it developed to analyze usage patterns and establish strategy across its 28 million MAU.

·2026.06.16 10:00

How does TAM solve problems in fast-moving organizations

Toss and Kakaopay shared TAM's role in connecting technology and business, along with its problem-solving approach, at TAM CONNECT 2025.

·2026.06.09 16:00

The History of Facial Recognition and the Future of FacePay

This covers the historical evolution of facial recognition technology, which began with manual coordinate recording and advanced through automation and statistical analysis.

·2026.06.09 14:00

Rubric Design and System Implementation for Skill Quality Management

Toss's AI DX team built a 30-item Rubric system combining rule-based and model-based approaches to manage the quality of Skills for coding agents.

·2026.06.08 10:00

How the Toss Team Faces the AI Wave: AI Surf Day

Toss has designated every Friday as **AI Surf Day**, building a culture where all members experiment with AI and apply it to their work.

·2026.06.05 10:00

Tips for Building Capabilities to Solve Cross Functional Technical Problems

Cross Functional technical problems are solved not by coordination but by redefining and structuring the problem.

·2026.05.22 10:00