A global technology company operating large-scale payment platforms is seeking a Principal Application Support Specialist in Tokyo. This role is central to ensuring the stability and scalability of mission-critical internal payment applications in a fast-growing FinTech environment.

You will take ownership of complex production systems, resolve high-impact incidents, and collaborate closely with global engineering teams to continuously improve platform reliability and operational excellence.

Key Responsibilities

• Triage and resolve Tier-2 application issues, escalating complex cases to engineering squads
• Investigate production incidents, identify root causes, and document permanent fixes
• Partner with engineering teams to report bugs, gaps, and improvement opportunities
• Maintain and enhance internal support documentation, processes, and operational workflows
• Support application releases, configuration updates, and on-call production requirements

Required Skills and Qualifications

Experience:

• 4+ years of experience in application support, production operations, or software maintenance
• Strong understanding of modern web applications across backend and frontend environments
• Hands-on experience with at least one of the following: Java, React, MySQL, databases, or messaging queues
• Proven experience working with ticketing systems and structured incident categorization

Soft Skills:

• Clear and confident communicator across both technical and non-technical stakeholders
• Strong analytical problem-solving ability, especially in live production environments
• Calm and reliable mindset when handling high-priority incidents

Language Requirements:

• Japanese: Business-level proficiency required
• English: Fluent communication required for global collaboration

Preferred Skills & Qualifications

• Experience supporting FinTech, banking, or payment platform systems
• Familiarity with on-call rotations and real-time production support environments
• Ability to mentor junior team members or lead small operational initiatives