Back End Engineer

Tokyo
Remote OK
Full-time
December 14, 2020

Job Description

We are looking for an engineer with a strong background in developing and scaling distributed systems. You will be a core member of a diverse and international development team composed of seasoned professionals.

Our stack

We are developing a single page application built with React and TypeScript while the backend API is implemented with the Django framework. Our backend stack is based on PostgreSQL, Redis and runs on AWS.

What you’ll do

Foster strong collaboration among team members and help them solve problems.
Architect and develop optimal solutions to complex problems.
A key contributor to the overall system and software development life-cycle process.
Build and maintain scalable applications.
Monitor, test and continuously optimize your designs.
Deliver modern, testable and maintainable code.
Collaborate with a variety of different roles such as machine learning engineers, quality assurance, product owners, designers, and analysts.

Who you are

These are not hard guidelines, but rather we’re looking for someone with some combination of the below. When applying, let us know which of these you have, and we’ll decide if you’re a match.

You would ideally have a strong proficiency in Python.
You are experienced working with Python web frameworks, preferably Django.
Efficient at writing and profiling/analyzing SQL queries, with a preference for PostgreSQL.
You have a minimum of five years of experience in professional software development.
Ability to quickly adapt to new environments and challenges.
You are ideally an experienced user of workflow software, for example with JIRA and Confluence and agile process in general.
Experience working with JavaScript, as well as TypeScript. Ideally, you have experience with React.
You have experience with continuous delivery and automated testing.
You are experienced in operating cloud-based computing infrastructure.
You have ideally worked on customer-facing products at scale.
You have excellent analytical and problem-solving skills.
You have excellent communication ability both verbally and in writing.
You value team success over personal success.
You are passionate about coding, and would ideally be a contributor to open source projects.
You would ideally have a degree in Computer Science or a similar field.

APPLY NOW ➜🇯🇵 Residents Only

About Cooori

Coooriは、人工知能を使って効率的な学習を可能にする、パフォーマンス言語学習プラットフォームを開発するアイスランド発のスタートアップ企業です。2019年に日本法人化を果たし、英語教育界に革命を起こすべくまずは日本のビジネスシーンで展開を始めました。現在は英語を学ぶ日本語話者向けにオンラインプラットフォームを提供しています。

Coooriのミッションは、独自開発の人工知能とカリキュラムで、従来の10分の1の時間で英語の習得を可能とし、そしてこの学習法を世界に広めること。平均年齢33歳のスタッフの約半数が外国人というインターナショナルな環境で、社内公用語は英語です。

教育とテクノロジー2つの観点から、より良いプロダクトの開発を常に目指しています。

言語への情熱と専門性が生む新しい技術革新
Cooori創設者のアルナ・イェンソン氏は、AIを使った言語学習技術の研究や実験を続ける中で、効率を追求した言語学習システムを構築し、人々に貢献することが自分のミッションであると確信しました。ロシア、ドイツ、日本で教育を受けた共同創設者のエイソール・エイヨルフソン氏は、7ヶ国語を流暢に話す言語学博士です。Cooori設立後もその情熱と専門性は常に新しい技術革新に向かい、英語学習システムのさらなる機能拡充・強化を目指します。

より先進的なAIの技術開発において、豊田工業大学シカゴ校と提携
東京工業大学名誉教授で文化功労者にも認定された古井貞煕氏は、アルナ・イェンソン氏の技術者、また実業家としての人生に大きな影響を与えました。2017年、Coooriは古井氏が学長を務める豊田工業大学シカゴ校（Toyota Technological Institute at Chicago）とAIシステムの技術開発の分野において提携契約を締結しました。情報技術の分野で最先端のレベルを誇る大学との提携により、より先進的なAIの開発に挑みます。

Coooriが開発するプロダクト

・効率的な学習のために使用される独自のAIシステム
・各ユーザー向けにエクササイズ出題をパーソナライズ
・AIにサポートされたオンライン学習とヒューマンタッチのカウンセリングとを組み合わせた
・ハイブリッド学習システム
・ユーザー、カウンセラー、教師、およびHRスペシャリスト向けの総合データダッシュボード

Japanese Language Policy
It is not a requirement to speak Japanese for developers at Cooori, although it is certainly a plus. Some positions such as Sales require Japanese; however, everyone in the company is able to speak English.
Paid Leave
- Weekends (Saturday and Sunday), Japanese national holidays, New Year’s holiday
- 26 days paid vacation days including March 30th which is Cooori’s foundation day.
Benefits
🍹 Free dinner and drinks when we celebrate

👩‍🎓 Education stipend. We buy the books, courses, and other resources you need to continue learning and developing.

🍔 Free Friday team lunches

💻 The latest equipment - computer, monitor, etc. needed for your job.

🚃 Full transportation coverage

🏥 Health insurance

💜 Social security / insurance benefits included
Engineer Interview Process
Engineering Jobs

(1) Document screening

We will contact you if you are able to proceed to the interview stage.

(2) Interview

We will set up around 5 interviews. Depending on the situation, some of the interviews will be online or on-site.
- The first interview is an overall technical check with the lead software engineer. (online) We ask candidates to complete a small project before moving on to the second interview.
- The second interview involves explaining the project, and getting feedback on the assignment. (online)
- The third interview is a casual meeting with the dev team members. (online or on-site depending on the situation)
- The fourth interview is a discussion with the founder who is the CTO / PM. (online or on-site depending on the situation)
- The fifth interview is a short chat with the CEO. (usually online)
Work style
- Our culture could be described as Scandinavian, meaning we rarely work overtime and instead we get things done during work hours.
- We like vacations and encourage employees to take advantage of them in order to maintain fresh minds.
- We are proud to foster a workplace free from discrimination. We strongly believe that a diversity of experiences, perspectives, and backgrounds lead to a better environment for our employees and a better product for our users.
- Once COVID-19 is over we will allow some remote work. The policy has not been fully defined, as of December 2020.
Tech Stack
We are developing a single page application built with React and TypeScript while the backend API is implemented with the Django framework. Our backend stack is based on PostgreSQL, Redis and runs on AWS.
Team Culture
- We welcome ideas wherever they come from, treat them equally, and use collective intelligence from our team in order to define and design all parts of our service.
- We emphasize making development decisions using analytics.
- We minimize report meetings, and instead we treat meetings as work sessions where minutes are kept and decisions are made collectively and followed upon.
Team Member

The Product Team (10x)

1x Product manager / CTO

1x Product manager assistant

1x Lead software engineer

1x Backend engineer

1x Frontend engineer

2x Machine learning engineers

1x Content manager

1x Designer

1x QA

Sales Team (4x)

1x Sales Director

3x members

Customer Success Team (3x)

1x Customer Success Director

2x members

Upper Management (3x)

1x CEO

1x CFO

1x HR / Accounting