At bitFlyer, strengthening the data infrastructure that supports product advancement and faster decision-making is an urgent priority. To accelerate data utilization across the entire organization, we are seeking a Data Engineer who will be responsible for building and operating reliable data pipelines.

■Main Responsibilities - Design, build, and operate data pipelines for collecting, processing, and storing data from various sources - Develop infrastructure for data analytics and machine learning (ETL/ELT, data warehouses, data lakes, etc.) - Design and optimize workflows for both batch and real-time processing - Build mechanisms to improve data quality management and observability (monitoring and visualization) - Define requirements and specifications in collaboration with business teams and analytics teams

Required Skills

2+ years of hands-on experience in designing, building, and operating data processing platforms or pipelines
Knowledge of RDB and NoSQL databases (including schema design and performance tuning)
Practical experience with large-scale data processing using Python, Scala, or Java
Proficiency in SQL for data extraction and aggregation
Native-level Japanese communication skills

Nice-to-have Skills

Experience building data infrastructure in cloud environments (e.g., AWS Glue, EMR, BigQuery, Databricks)
Experience implementing real-time data streaming using Kafka or Kinesis
Experience with distributed processing frameworks such as Spark or Flink
Practical knowledge of BI tools and dashboard creation (e.g., Tableau, Power BI)
Knowledge of machine learning pipelines and MLOps
Business-level English communication skills

Compensation

8,000,000 - 13,000,000 yen - Monthly salary = Annual salary ÷ 12 - Breakdown of monthly salary: -- Fixed overtime pay: Equivalent to 45 hours/month = hourly wage + 25% × 45 hours -- Base salary = Monthly salary – Fixed overtime pay - Additional legal overtime, night, and holiday work exceeding 45 hours/month will be compensated separately - Various allowances (commuting, remote work, etc.) provided separately - Performance-based bonus available in addition

Employment and Work Conditions

Employment Type: Full-time (No fixed term)
Probation Period: Yes (6 months), with no changes to labor conditions during the probation period
Working Hours: 9:00 AM - 6:00 PM (Flextime system with core hours from 10:00 AM - 4:00 PM)
Break Time: 60 minutes during working hours
Overtime: Available
Smoking Prevention Measures: No smoking indoors

Ideal Traits

A Team of Responsible Professionals As of November 2024, bitFlyer supports the trading of customer assets exceeding one trillion yen across our Japan, US, and EU locations. Developing reliable systems in such a dynamic market is both highly challenging and rewarding.

We aim to be a team of professionals who can shoulder this critical responsibility. Let’s shape the next generation of finance together. - Strong commitment to compliance - Empathy with bitFlyer's MVV (Mission, Vision, Values) - Passionate and sincere attitude - Agility and adaptability to change - Logical and effective communication skills - Strong problem-setting, solving, and execution capabilities

bitFlyer

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