Data Engineer - Python

Sep 03, 2023

No. 7, Section 5, Xinyi Road, Xinyi District, Taipei City, Taiwan

Job overview

As a Data Engineer (Python), you will be responsible for designing and implementing a robust data flow on our G123 platform to ensure optimal timeliness, data quality and improved user experience. You will work closely with advertising and operations to directly address the data needs as our G123 platform grows its portfolio of games and expands globally. Main responsibilities include:

  • Investigating suitable data solutions, evaluating and using reasonable costs
  • Mainstreaming technologies to solve data problems
  • Maintaining the data warehouse of the G123 platform


Bachelor's degree or above in Computer Science or other related fields

  • 3+ years of relevant experience as a data engineer, etc.

  • Proficiency in: bash, Python, Scala, JavaScript

  • Maintained and operated open source data-related suites: HDFS, YARN, Hive, Presto, Spark, Kafka, HBase, Elasticsearch, TiDB, Flink, Airflow, etc.

  • Familiar with AWS data-related services: DynamoDB, QuickSight, Lambda, S3, EMR, Athena, Redshift, Kinesis, Glue, RDS, DMS, etc.

  • Familiar with Unix / Linux systems

  • Familiar with Docker and other containerization concepts

  • Must be residing in Japan (regardless of the visa status)

Good to have

  • Experience in operation and maintenance of production environment in public cloud (AWS, Ali cloud, Tencent cloud, etc.)
  • Experience in operation and maintenance of large data stream production environments (data volume of petabytes or more, processing data streams of more than 100,000 strokes per second)
  • Experience in open source community contribution
  • Passionate about games, able to actively dig and understand the data requirements of games

Language Requirements

  • Can work in Chinese OR Japanese OR English
  • Can read and understand technical documents in English


  • Visa support
  • Free lunch catering (*after 3 months employment) and early-bird breakfast
  • Free in-office Starbucks, coffee, tea, beverages, snacks, sweets, & vitamins/supplements
  • Modern office space in the heart of Tokyo, with views of Tokyo Tower and Mount Fuji
  • Industry-leading work-life harmony: overtime is rare and discouraged
  • Commute expenses covered
  • 30,000 yen rent support if you live 2 stops from Roppongi 1-chome or Kamiyacho stations
  • Bonus for continuous employment (50,000 yen/month added to base salary after 5 years of continued employment)
  • Health insurance
  • Diverse & international environment
  • Working hours: 10:00 – 19:00, Monday to Friday (in-office)

About CTW.inc

Founded in 2013, CTW is Japan’s No.1 browser game company. Our primary service is the G123 IP game platform — which publishes video games based on famous Japanese IP.

We’ve been experiencing steady growth in revenue in the past few years as our player base has exploded to over 50 million users worldwide.

We must grow quickly to keep up with market demand.

Our CEO founded and named this company with the aspiration to "Change the World." As a fast-growing startup, we hope our team will drive themselves to try new things and accelerate their careers to match the rapid expansion of the company.

Our core values are
- ambition
- drive
- simplicity

With global hits like Vivid Army, Queen's Blade, and many more, we’re looking to go from a market leader in Japan to an industry leader globally!

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