Japanese - Business
English - None
Ruby on Rails
Product Integration Engineer

Job Description

With the mission of "making small business the leading role in the world," freee develops and provides services with the aim of realizing a "platform that allows anyone with ideas, passions, and skills to grow their business strongly and smartly." doing.

Product integration engineers are developing the account aggregation function of accounting freee with the mission of providing a state in which "whenever a user opens accounting freee, the latest information on external services is available and can be used immediately in business".

We will comprehensively link services that users are likely to need, reduce manual input to 0 as much as possible, and create an easy-to-use environment that can be used safely and immediately without tripping by using the link function. With the goal, we are building a foundation that can collect external data accurately and in real time and provide it in a stable manner.

We are looking for colleagues who will be responsible for the evolution of society through collaborative development with services of other companies in order to collect data necessary for user's work efficiency and decision making accurately and in real time and provide it stably.

[Details of business content]
・ Design / implementation / test / improvement of functions using APIs provided by financial institutions
・ Design / implementation / testing / improvement for expanding data linkage with external EC sites and payment services.
・ Operation / maintenance and efficiency improvement for stable function provision of integration features


・Interests in developing their own products and creating value in the world and want to change the world together
・Interests to abstract various types of data and put them into a manageable form. 
・Web application development experience and excellent skills
・Those who are interested in the tools used by freee, those who want to learn more together (focus on motivation, not necessarily all experienced and familiar)
・Strong Japanese communications skills, both in verbal and written

・Experience in developing applications using OAuth2 API
・Experience in developing large-scale Web services
・Communication ability to correctly grasp and convey inquiries from users
・Experience in dealing with existing service debts and major changes

■Years of Experience : 3 years


Job Position System Engineer
Type of Job Full Time
Annual Income 4,000,000JPY ~ 10,000,000JPY
Location Tokyo Head Office
Working Time Professional discretionary labor system (flextime system (core time 11: 00-16: 00))
Trial Period Yes

・Saturdays / Sundays
・National holidays
・Summer vacation
・Year-end and New Year holidays
・Paid vacation

What's on Offer

・ Full payment of transportation expenses
・ Complete social insurance
・ Housing allowance
・ Qualification acquisition support system
・ In-house award system
・ Kanto IT Software Health Insurance Association
・ All-you-can-drink / main payment

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Company Information

freee K.K.

Operation/development of full-automatic cloud accounting and human-resources software

Company Website

Number of Employees


Company Features

No Dress Code
In-house Development
Visa Supporting