C # Developer

Luxembourg Europe

25 Nov 2022



Information Technology

Full Time


2 years

About bitFlyer:
bitFlyer is one of the largest Bitcoin and blockchain company in Japan. We operate a virtual
currency exchange and marketplace. We provide our customers with convenient and exciting
ways to buy, sell and spend bitcoins.
Our vision is to build a truly global Bitcoin and blockchain company to reflect the international
nature of the virtual currency. Our mission is to make the world simpler through blockchain.
bitFlyer was established in January 2014 in Tokyo. We have since established regional
headquarters for the US in San Francisco and for the EU in Luxembourg. We are a fast-growing,
dynamic and international team with a passion for virtual currency and blockchain technology.
We are backed by world-class investors including SMBC Venture Capital, Mizuho Capital,
Mitsubishi UFJ Capital, Dentsu Digital Holdings and SBI Investment.

Role Description:
We are looking for a C# developer to develop our European operations. The role is based in our
office in Luxembourg with an opportunity to travel to our office in Tokyo. You will have the
chance to be part of the growth of the business in Europe and also US.
You will help build and maintain our digital currencies exchange platform in Europe. This will
involve having a close relationship with our developers within the Group. It is vital that you have
strong communication skills, are focused on delivering results and experienced with frequent
and small release cycles.
This is a unique opportunity to work for a fast-growth and revolutionary industry. You will be an
instrumental part of this growth story. A familiarity and genuine interest in cryptocurrency and
blockchain technology is desirable.
 Design and development of all aspects of our back-end systems as well as server
and client-side of our bitcoin marketplace
 Leverage your development skills to create, maintain and enhance our platform
 Ensure the reliability and security of the exchange system
Required Skills and Experience:
 Extensive technical knowledge of the Microsoft Stack (server and client-side)
 5+ years’ experience developing in .NET Framework, ASP.NET (C#) and JavaScript
 5+ years’ experience with databases
 5+ years’ experience with SQL Server
 Experience with Microsoft Azure

Desired Skills and Experience:
 Familiar with Jira, Confluence and Agile methodologies
 Knowledge of data architecture and algorithms
 Knowledge of parallel and asynchronous programming
 Experience developing financial systems
 Experience developing large-scale services (able to design to reduce load)
 Fundamental understanding of mobile app development
 Experience with large-scale transaction processing
 Fluent in English (oral/written)
 Other European languages / Japanese are a plus