Lang-8 inc.

Rails engineer

  • job
    Web Application Engineer
  • area
    Tokyo Shibuya
  • fee
    5.00 Millions Yen〜 8.00 Millions Yen
Congratulatory mileage 2 % Annual income
.10 Millions Yen 万マイレージ 〜 .16 Millions Yen万マイレージ
Congratulatory mileage 2 % Annual income
.10 Millions Yen 万マイレージ 〜 .16 Millions Yen万マイレージ
27 Sep 2018
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HiNative, the language learning App we are operating has reached 500,0000 UU and is still growing with an average of 28,0000 users increased every month. We provide proofreading service in more than 110 languages and is going to speed up to expand our business to more locations around the globe! As a result, we are hiring a Ruby on Rails engineer to walk this journey with us!

Hope to work in such development environment

We use a variety of tools in our office including Slack, Trello, GitHub, Qiita Team and many more.<br>We pay much attention to the numbers while doing our developments, and we carry out surveys to collect feedbacks from our users to help us improve the quality of our service.

About our Team

【About Lang-8】<br>We have a very diverse and strong engineering team including Android engineer, iOS engineer, Rails engineer, designer, data scientist, marketer, etc. There are also more foreigners joining our group to bring more different vibes to our group!<br><br>【Details about Lang-8】<br>・We are good at App development (iOS/Android)<br>・We are good at UI/UX design<br>・We have engineers who used to be the user of &quot;HiNative&quot; before<br>・We have a talented data scientist who used to work in a famous overseas firm before

The position at a glance

Why were hiring

Business expansion

Type of industries



Web Application Engineer

Job type

Language level

Japanese: Not required
English: ~ IELTS 6(Business)


Engineering requirments

Desired skills

▶︎We are looking for:<br>・Share the same vision as we do. Have a strong passion in technology.<br>・Interested in learning a foreign language. Interested in making a great service. <br>・Love challenges, and is always looking for ways to grow.<br>▶︎Requirements<br>Need to possess at least 2 requirements from the list below: <br>・Understanding of Ruby on Rails/ framework<br>・Experience about the development/operation of an Internet service<br>・Experience of an objective/ test driven development <br>・Teamwork experience<br>・Able to carry out a code review<br>▶︎Design and data analysis experience<br>・Experience about machine learning (mainly about natural language solution)<br>・Experience about code that is easy to maintain

About Salary

Depends on your skills and age


Insurances provided

Shift Requirements

Working hour: 10:00〜19:00

About application

Document examination<br>↓<br>1st interview<br>↓<br>2nd interview<br>↓<br>Offer


6F, VORT Ebisu III, Ebisu 1-21-8
Nearest station: Ebisu station
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About Company

Lang-8&#39;s mission is to create a platform for native speakers people who are learning a particular language to share their knowledge and experience to help people to learn a foreign language. Currently, we are running this Q&amp;A platform called &quot;HiNative&quot; to bring foreign learners and native speakers together. We provide our proofreading service in 110 languages at this stage and is expanding our business in a fairly quick speed to the global market. We just finished our fundraising process in September 2018. We are looking for more talented people to join Lang-8 to work with us to grow the business to the next stage. Our goal is to reach out to 1 billion people around the globe.

About Service


HiNative is a language learning App where learners can interact with a native speaker. It is like a Q&amp;A forum that allows a learner to post a question regarding a particular language he/she wants to learn, and the question will be answered by a native speaker. The answer will be explained, so the learner could understand the logic behind it. We offer this proofreading service in 110 languages where the learner can choose a language he/she is interested in.

Company Profile

Number of Employees 13 people Year of Foundation 29-Jun-07
Representative Ki You You Capital Fund N/A
Avg. age Gross Sales
Gender Ratio Industry Type IT・Telecommunication(SIer)
Place of head office 150-0013
Tokyo Shibuya 6F, VORT Ebisu III, Ebisu 1-21-8
Nearest station: Ebisu station
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Welfare ・Commuting allowance<br>・Insurance<br>・Paternity, maternity leaves, nursing leaves
Official website

Current recruitment information of the company

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