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Job ID : 1579510 Date Updated : February 20th, 2026
Team provides industry leading

Senior C Developer - E-only position

Hiring Company A Global Finance firm
Location Tokyo - 23 Wards
Job Type Permanent Full-time
Salary 8 million yen ~ 13 million yen

Work Style

Remote Work and WFH Casual Clothing Flex Time

Job Description

- Design, develop, and maintain ultra-low-latency C/Linux trading applications
- Enhance exchange connectivity and core application frameworks
- Own delivery across the full project lifecycle (analysis, design, development, testing)
- Implement, maintain, and enhance SPB DMA applications
- Provide L2/L3 production support and enable the support team through training and tools
- Ensure compliance with architectural strategy and development standards
- Partner with execution services to deliver cutting-edge solutions and maintain market leadership

General Requirements

Minimum Experience Level Over 6 years
Career Level Mid Career
Minimum English Level Fluent
Minimum Japanese Level None
Minimum Education Level Bachelor's Degree
Visa Status Permission to work in Japan required

Required Skills

- Very strong C knowledge and intensive practice using Linux  (Not C++, Not C/C++)
- Experience with extremely low latency and highly optimized development using server side processing and network communication with reliable and predictable performance
- Familiarity with medium scale development & integration projects
- Solid understanding of Linux/Unix power tools, regression testing automation, pcap, and networking
- Network protocols, TCP/IP stack, Kernel bypass technologies
- Ability to conceptualize and think clearly
- Accuracy and attention to detail

Job Location

  • Tokyo - 23 Wards

Work Conditions

Job Type Permanent Full-time
Salary 8 million yen ~ 13 million yen
Work Hours 8:40-17:40
Holidays weekend, National Holidays, Year-end and New Year Holiday etc
Industry Securities

Job Category

Company Details

Company Type Large Company (more than 300 employees)
Non-Japanese Ratio About half Japanese