Software Engineer at bitFlyer

Apply Now

Core Responsibilities

Back-end software engineers are responsible for the following operations.

・The back-end system for the virtual currency exchange platform ・API design and development for browsers and apps ・R&D on new blockchain services etc.


Required Skills

・Highly skilled in programming(especially object-oriented language)

Desired Skills

・Web API development experience ・Financial system development experience ・Experience in developing large-scale systems(designing for a large-scale load) ・Experience in developing in .NET Framework and ASP.NET(C#) ・Experience in databases ・Understanding of data structure and algorithms ・Knowledge of concurrent and asynchronous programming ・Knowledge of functional language ・Experience in developing compilers and interpreters ・Experience in planning and developing protocols ・Knowledge of security and encryption processing ・Experience in writing essays

Preferred Traits

・Carry the values of PEN(Passion, Execution, Numbers) ・Someone who loves programming

Job Location

・Head Office in Tokyo (Midtown Tower 8F, 9-7-1 Akasaka, Minato-ku, Tokyo)  Direct access from Roppongi Station  3-min walk from Nogizaka Station  10-min walk from Roppongi-itchome Station


・Annual salary (determined by experience and ability) paid in monthly installments ・Salary revision twice a year


・Transportation expenses to be paid in full ・Social insurances (health insurance, welfare annuity insurance, employment insurance, industrial accident compensation insurance) ・Short commute housing allowance ・Short commute relocation allowance ・Book purchasing plan (paid by company) ・Free drinks, snacks, and noodles ・Office Okan ・New-hire relocation assistance (amount varies by our regulations)


・Saturday, Sunday, public holidays ・Paid leave ・Year-end and New Year holiday ・Congratulatory and condolence leave, maternity leave, childcare leave, birthday holiday etc.

About Us

bitFlyer recorded the largest monthly trading volume, virtual currency trading service utilization rate, and virtual currency trading app utilization rate in Japan according to research performed by Macromill (online survey published on the Japanese Bitcoin information site,, in February 2018; "Virtual Currency and Cryptocurrency Trading Service Survey"). bitFlyer had the largest monthly trading volume recorded between April 2016 and January 2018 in Japan (includes spot, net settlement, and futures trading).


Things like age, gender, or nationality are not taken into account at bitFlyer. We only look for people with a great performance in their field. Thirty percent of our engineers come from different countries and many internal discussions are performed in English. All of this comes together to create an environment overflowing with diversity.

On the business side, we’ve brought together alumni from Goldman Sachs, Barclays Investment Banking, Credit Suisse, Mizuho Bank, Sumitomo Mitsui Banking Corporation, CyberAgent, GMO, Recruit Group, Square-Enix, video game development companies, the Harvard University MBA program, and many with experience working at corporations in other countries. On the engineering side, we have employees with experience at Google, Microsoft, Sony Entertainment, major social game providers, financial system integrators, and received recognitions such as the Mitou Project, Redcoder, and Microsoft MVP.

Office Environment

In October 2017, we moved to Roppongi’s landmark Tokyo Midtown. Not only is it an excellent location, but the interior of our office is designed to completely maximize our operational efficiency. Naturally, our engineers, corporate staff, and back office employees all enjoy high spec PCs with large monitors. The chairs used in our office were selected by polling our employees. As for keyboards, graphics tablets, and software, each employee is allowed to choose which specific ones they want to use.