Core Java Developer

2週間前


Tokyo Jobs via eFinancialCareers

Join a well-funded fintech company developing advanced financial infrastructure and a greenfield trading platform. You will design and build high-performance Core Java backend services, collaborate with a small and highly skilled engineering team, and contribute to technical decisions shaping the future of a modern fintech ecosystem with no legacy constraints.

Key Responsibilities

  • Develop and maintain Core Java backend components for high-performance trading systems
  • Design scalable, low-latency backend services and system architecture
  • Implement new platform features, APIs, and microservices
  • Optimize system reliability, throughput, and performance across distributed components
  • Collaborate with engineers and product partners to align technical requirements
  • Plan, prioritize, and execute development tasks independently
  • Contribute to long-term technical direction, coding standards, and engineering best practices

Required Skills and Qualifications
Experience:

  • 5+ years of backend engineering experience
  • Strong hands-on proficiency in Core Java
  • Experience with TCP/UDP network protocols
  • Knowledge of RDBMS or NoSQL storage systems
  • Proven experience building or maintaining high-performance backend services
  • Ability to work independently with minimal supervision

Soft Skills:

  • Strong problem-solving ability in complex technical environments
  • Clear and effective English communication
  • Ability to take ownership and work autonomously
  • Collaborative mindset within cross-functional teams
  • High attention to detail and commitment to code quality

Language Requirements:

  • English: Fluent
  • Japanese: Basic level

Preferred Skills & Qualifications

  • Experience with AWS, Azure, or GCP
  • Background in financial systems or real-time transaction platforms
  • Familiarity with Python or other backend languages for tooling or automation

About the Company
This company is a well-funded technology firm building next-generation financial infrastructure and trading systems. With a modern engineering culture focused on technical excellence, they maintain a small, highly skilled development team working with contemporary technologies and clean architecture.

Why You'll Love Working Here

  • Work on a true greenfield platform with no legacy systems
  • Full project ownership within a small expert engineering team
  • Exposure to advanced system design and high-performance architecture
  • Flexible work environment with excellent work-life balance
  • Stable, well-funded company offering strong long-term growth opportunities

Don't Miss Out - Apply Now


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