Background of Recruitment

A Responsible Professional Team

bitFlyer manages over 900 billion yen in customer assets across three locations: Japan, the United States, and Europe, supporting their transactions. Developing reliable systems in a constantly changing market is challenging and requires significant responsibility and reward.

We aspire to be a professional team that fulfills this heavy responsibility. Let's shape the future of finance together.

Job Description

You will be responsible for backend development at bitFlyer, a major domestic cryptocurrency exchange. We are looking for someone who is mission-driven to deliver the best products to our customers and can take ownership in daily development. Striving for both speed and reliability, let's take on the challenge of simplifying the world with blockchain.

■Main Responsibilities - Development of backend systems for the cryptocurrency exchange (C#, ASP.NET) - Leading software architecture - Improving the knowledge level of the engineering team through active knowledge transfer - Designing and developing APIs for web or app services - Development of new products

■Technical Stack / Development Environment - Server-side: C# / .NET / .NET Framework / ASP.NET - Frontend: React / Vue.js / TypeScript - IDE: Visual Studio - VCS: Git / Azure Repos - CI/CD: Azure Pipelines - Monitoring: Datadog / PagerDuty - Others: Slack / Google Meet / Google Workspace / Confluence / Jira

Required Qualifications

• Knowledge of data structures and algorithms
• Knowledge of concurrent and asynchronous programming

Preferred Qualifications

• Over 3 years of development experience with .NET Framework and ASP.NET (C#)
• Over 5 years of system development experience
• Experience in Web API development
• Experience in developing financial systems
• Experience in developing large-scale services (ability to design considering load)
• Experience as a leader in a development team

Desired Characteristics

• Compliance-oriented
• Sympathizes with bitFlyer's mission and values
• Passionate and sincere
• Able to respond flexibly to changes with a sense of speed
• Able to communicate logically
• Strong problem-setting, problem-solving, and execution abilities

Expected Annual Salary

8,000,000 yen to 13,000,000 yen *Negotiable based on experience and skills

• Annual salary system (1/12 of the annual salary paid monthly)
• Performance bonus available
• Fixed overtime allowance corresponds to 45 hours of overtime per month. If overtime exceeds 45 hours per month, the difference will be paid separately as overtime allowance.

Job Location

・Head Office in Tokyo (Midtown Tower 30F, 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 ・Work In the Office is currently recommended

Allowances・Benefits

・Commutation Allowance ・Social insurances (health insurance, welfare annuity insurance, employment insurance, industrial accident compensation insurance) ・Book purchase support ・Free drinks, snacks, noodles, cut fruits, and Office massage

Holidays

・Saturdays, Sundays, Japanese public holidays ・Annual leaves ・Year-end and New Year holiday ・Congratulatory and condolence leave, maternity leave, childcare leave, birthday leave, etc.

Diversity

English version under preparation.

Office Environment

English version under preparation.

About bitFlyer

English version under preparation.