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J’s Code Challenge Engineering in Japan

J’s Code Challenge  Engineering in Japan

The Challenge has ended

Rush around wildly

Let's challenge the coding competition! You'll reach a fast pass to get hired in Japan.

This programming contest run by Connect Job supports people hoping to work in Japan. We need a challenger like you who is passionate about creating a new common sense in people's lives and who can Rush around wildly to bring digital transformation to Japan.
The following excellent companies who continue to create a new value for the world sponsor the contest.


Reazon Holdings / Gold Sponsor

Reazon Holdings’ aim is to maintain rapid growth and become “No. 1 in the World.” The company’s business in Japan is steadily expanding mainly through its AdTech, Gaming, Media, and FoodTech divisions. In the near future, it will be launching new services overseas to pursue success in the global market. With its flat environment, anyone at Reazon with a challenger’s spirit has the opportunity for rapid advancement and promotion. The company fosters high-performance engineering with an attractive, comfortable workspace and special benefits available only to engineers. Reazon’s engineer-led “product-first” philosophy drives decision-making for products and services.
Reazon CTO interview

LINE / Silver Sponsor

LINE is a service that is completely rooted in society as a communication tool in Japan today, and is famous as a global company that delivers very influential services to the world one after another. The company has many strategic alliances underway to expand the business more than ever and now places the diverse engineering teams to AI and the fintech field, which integrates finance and IT, as pillars of its growth strategy. You can know more about LINE engineering team realizing the company’s breakthrough.
LINE Engineering

Sony / Silver Sponsor

The Sony Group is too famous as an electronics maker, but it is also a content maker. Trendy contents in recent years are born from Sony. In addition to supporting the creative community through businesses such as games, music, and movies, Sony is working on various projects that contribute to the global environment, such as cooperative farming and the Open Energy System. At Sony, there is a place where employees from diverse groups can dynamically interact, stimulate and grow. Unprecedented emotions are born beyond the growth of diverse individuals. That's what Sony believes.
Sony's purpose



1 task - language-agnostic fundamental skills
80 min. time limit challenge


[ Prize 1 ] TOP 10 - You will be invited to a technical interview with Reazon's CTO
[ Prize 2 ] TOP 11-30 - you will be invited to interview with excellent companies Connect Job confidently recommend
[ Prize 3 ] TOP 30: you will get a $100 cash gift

Challenge period

The CodeChallenge starts on Jan 14th, 2021 at 08:00 JST / Jan 13th, 2021 at 23:00 UTC
The CodeChallenge ends on Jan 19th, 2021 at 22:00 JST / Jan 19th, 2021 at 13:00 UTC


You just click the "Apply" button below and fill in the form.
If you are new to Connect Job, please sign up first. You will be directed to this page again when you log in.

J’s code challenge Engineering in Japan is powered by Codility.

You are consenting to be sent a registration email from Codility as Connect Job registers you for the challenge on behalf of you with the information you provide here.

Before the challenge, you will receive
a) an email confirmation to set up a reminder for this challenge
b) an email notification about the start of the challenge (when it starts)

The challenge has started!


Here is the link where you can participate in the challenge:
J's CodeChallenge Engineering in Japan

Date & Time

The challenge duration is 80 mins.

It will run for 6 days. Here is the detailed time.

Start on Jan 14th, 2021 at 08:00 JST / Jan 13th, 2021 at 23:00 UTC
End on Jan 19th, 2021 at 22:00 JST / Jan 19th, 2021 at 13:00 UTC

You can participate in the challenge anytime you like during the above period!


  • All solutions must be submitted before the challenge closes

  • Available coding languages are: C, C#, C++, Go, Java, JavaScript, Kotlin, Lua, Objective-C, Pascal, Perl, PHP, Python, Ruby, Scala, Swift, VisualBasic

  • The final result will be based on the score of the submitted code. The time of completing the challenge and order of submissions may also be taken into consideration.

  • All tasks have to be solved on your own. Any cases of plagiarism will result in disqualification.

  • When selecting prize winners we will consider all of your challenge submissions. Winners will receive an e-mail informing them that they have won a prize.


If you have any inquiries, please contact:

Date Venue, Memo Apply Status
2021/01/14 - 01/19 ONLINE
J’s code challenge Engineering in Japan is powered by Codility
Please be noted that you will receive an e-mail from Codility and Connect Job.

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