Senior Backend Engineer/ Japanese N2/ Business Level English

 Silver Egg Technology Inc.


 Tokyo/ Osaka

Posted on 2021/09/08
Job type Others
Programming language Python
Filter by IT skills Python
Filter by years of experience 5 - 10 Years
Salary min 7 million yen (annually)
Salary max 10 million yen (annually)
Japanese level  Business level (Advanced)
English level Business
Ref ID 6157
Job appeal Flex time; Less to No Overtime; Foreigner friendly company; Using new tech
  • At least 5 years of experience in backend development for the Internet
  • Familiarity with development and operation of distributed and scalable service architecture in the Cloud (AWS, GCP, etc.) - Familiarity with async (asynchronous) Python
  • Bachelor's degree in computer science or science and mathematics
  • Japanese N2 level
  • Business level English
Good to have
  • Experience working on services where performance (low latency, high scalability) is important
  • Development of data processing algorithms on a large scale through parallelization and decentralization
  • Advanced skills in algorithm development
  • Experience working with large data sets, especially on Hadoop, Spark, or a cloud platform such as AWS or GCP - Ability to extract, join, and analyze complex data sets using SQL
  • Experience integrating and analyzing data from multiple sources.
  • Deep technical or data science experience.
  • Understanding of modern machine learning techniques and their mathematical underpinnings.
  • Experience participating in programming competitions

About the Company

Silver Egg Technology is a leading company in the real-time recommendation space in Japan. For many years, we have been using the most advanced recommendation technology to show the best products and content to each user on the most popular websites in Japan. Through our services, we help our clients create a welcoming online experience for their users.

Work Responsibilities

At the end of June, we plan to release the personalization platform "IGENT-X" as a new product, and as the lead engineer for the new product, you will be in charge of a wide range of tasks, including system design and development.

As the leader engineer you will be responsible for:

  • Architecture design and development that is necessary for the development of our system and easy to operate

  • Keep the technologies, tools, and frameworks used in our system up-to-date.

  • Construction of back-end system that handles a large amount of data

This position has the following features:

  • This is a great opportunity to work as a lead engineer on a new product that has just been released and experience building a product together.

  • You will have the opportunity to work on the backend of a recommendation platform that handles a large volume of traffic and data as we provide services to various industries.

  • We are committed to developing and operating our own services, and we are constantly identifying problems, considering ideas for improvement, and implementing our services.

  • As we have a small team, each person has a lot of discretion and can incorporate their opinions and ideas.

  • We try to develop services that satisfy our customers by utilizing the characteristics of cloud computing and actively incorporating the latest technologies.

Assigned to:

Product Development Team, Engineering Department

*Half of the engineers are foreign nationals, but they are able to communicate in both Japanese and English.

Preferred Personality

People who like to think and create things from scratch.

Development Environment

  • Language: Python3 (with some Python2)

  • Environment: MacOS/Linux (Ubuntu), Amazon Web Service, Google Cloud Platform

  • Framework: Pyramid, Ember.js (to be replaced from time to time, depending on proposals, etc.)

  • Management tools: Phabricator, Git, Arcanist

  • Development method: Scrum

Organizational Strucuture

Total: 60 (including temporary staff)

7 foreign nationals from USA, Netherlands, UK, Mexico, Philippines, China

Internal language: Japanese, English

Working Hours

9:30-18:30 (8 hours)

* Discretionary work system

*Average overtime: 8-15 hours/ month

Welfare and Benefits

  • Social insurance (employment, worker's compensation, health, and welfare pension)
  • All transportation expenses paid
  • Access to recreational facilities of Chubu IT Industry Health Insurance Association


  • Two days off per week (Saturday and Sunday)

  • National holidays

  • Year-end and New Year vacations (last year's results: 6 working days (12 days including Saturday, Sunday and holidays))

  • GW vacations (as per calendar),

  • Paid Leave

  • Congratulation or condolence leave

  • Annual holidays: 126 days

  • Three days of company paid vacation are granted on the day of employment.

  • Maternity leave, childcare leave, nursing care leave, and shortened work hours during childcare.

Evaluation Process

  • Document screening

  • First round of interviews (General Managers, Managers)

  • Final interview <President, Co-founder, COO

  • Job Offer

*There may be more interviews or meetings, or they may be scheduled on different days.


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