Using user story points for smarter project management (feat. LINE Pay dev team)

Getting started In this post, I’d like to share the use cases of story points during LINE Pay’s app and server development. I hope this post will provide you with an opportunity to understand story points better and make good use of them. What are story points? Before directly diving into story points, let’s first […]

LINE DEVELOPER DAY 2020 Event Recap

Hi, this is Momoki from Developer Success Team.

We held LINE DEVELOPER DAY 2020, LINE’s technology conference, for three days from November 25 to 27. First of all, I would like to thank everyone who participated, all the guests and internal speakers, and everyone involved in the organization of the event.

LINE DEVELOPER DAY 2020 was our first online event due to the spread of COVID-19. In this article, I will look back at the trends in registration, participation, and viewing of LINE DEVELOPER DAY 2020, along with various figures, by excerpting and editing some of the content from the internal report.

【Team & Project】 Introducing LINE’s Infrastructure Security Experts

LINE’s software engineers belong in development centers comprised of different departments running various projects. The Team & Project series takes a closer look at these departments and projects, their roles, team structure, tech stacks, challenges that lie ahead, roadmaps, and more. In this blog post, we interviewed members of the Infra Protection Team who keep […]

Engineers at LINE Fukuoka Participated in a Virtual Hackathon

At the LINE Fukuoka development department, 80 engineers participated in a remote ideathon and hackathon for two weeks. I’ll introduce how we prepared the event remotely and the deliverables that were presented at the event. Engineers at LINE Fukuoka participate in a hackathon every year (except last year when we couldn’t run the event). This […]

Introducing Frey: LINE’s new self-service batch ingestion system

Hi, this is Yang Xu from Data Engineering 1 of the Data Platform department. Our department runs a huge Hadoop cluster and provides various services for data analysis, machine learning, and so on. One mission of our team is providing a batch ingestion service, which ingests data from different storages into our Hadoop environment for […]

Kafka-based job queue library ‘Decaton’ examples

Introduction: Decaton LINE recently released an in-house developed library, Decaton, as open source. Decaton is a Kafka-based asynchronous job queue library, and it is widely used throughout LINE. GitHub: line/decaton – High throughput asynchronous task processing on Apache Kafka In fact, Kafka offers Kafka Streams, its official library for processing streams. However, Kafka Streams did not […]

Abuser detection random forest model and hyperparameter tuning

Hello everyone, I’m Dekai Wah, currently an intern at LINE’s Game Security Department. In our department, we work on different facets of securing games from cheating behavior. These could range from obfuscating code to analysis of suspicious behavior on our game servers. In this project, my teammate Yoshiki Kusama and I analyzed the game data retrieved from our […]

LINE DEVELOPER DAY 2020 Speaker Interviews

I’m Miki from the Developer Success Team.

LINE DEVELOPER DAY is a technical conference for engineers where we will introduce the challenges and initiatives in the technical field of LINE’s various services. This year’s conference will be held online for three days from November 25th to 27th.

The official website for LINE DEVELOPER DAY 2020

The conference will offer over 150 sessions over 3 days, divided into specialized tracks for each technology area as follows

  • Day1 : AI/Data, Server Side LINE Platform, Security, Infrastructure, Corporate IT, Others
  • Day2 : AI/Data, Server Side Application, Client, Frontend, Test/QA, Others
  • Day3 : AI/Data, Fintech, Blockchain, Developer Product, OSS, Product Management, Team & Process, Design, Others

In order to give you a fragmented view of the conference content, we have released the movies of pre-interviews with the speakers. Since it’s difficult to introduce all the speakers, we’ve included 8 speakers from AI/Data, Server Side LINE Platform, Security, Infrastructure, Server Side Application, Client, Frontend and Developer Product. We’ve picked up a speaker from each category and asked them to give us an outline of the session they were in charge of, as well as a subjective view of what LINE DEVELOPER DAY 2020 is all about.

Introduction of panel discussions with guest speakers in LINE DEVELOPER DAY 2020

Hi, this is Momoki from the Developer Success Team.

During LINE DEVELOPER DAY 2020, scheduled to be held online November 25-27, 26 of the 156 sessions will be held in a multi-person panel discussion format with a theme.

In this article, you will find session summaries and speaker profiles for the 10 sessions that will be conducted in a panel discussion format with guests.

Introduction of guest speakers and their sessions in LINE DEVELOPER DAY 2020

Hi, I’m Momoki from the Developer Success team.

We are pleased to announce that we have updated the session list for LINE DEVELOPER DAY 2020, which will be held online for three days from November 25th to 27th.

More than 200 people, mostly engineers from LINE and its affiliates, will be speaking at this year’s LINE DEV DAY, with a total of 156 sessions planned.
There will be 30 sessions (20 lectures and 10 panel discussions) with a total of 36 domestic and international guest speakers.

This article will provide a summary of the 20 guest lecture sessions at LINE DEVELOPER DAY 2020, as well as profiles of the speakers.