Join a global fintech company as a Senior Application Support Engineer, supporting cloud-native payment platforms and digital wallet solutions for enterprise clients.

This role acts as a technical bridge between engineering teams and clients, ensuring smooth implementation and ongoing operation of mission-critical payment systems. You will work on cutting-edge technologies in a fast-growing, international environment.

Key Responsibilities

• Support application implementation and ongoing system operations in collaboration with internal teams and clients.
• Translate solution designs into practical system configurations during implementation.
• Provide post-go-live support including incident management and system updates.
• Investigate, prioritize, and resolve technical issues in critical systems.
• Communicate with stakeholders on issue progress and resolution timelines.
• Execute SQL/NoSQL queries and API testing for troubleshooting and validation.
• Collaborate with cross-functional teams to ensure successful delivery of solutions.
• Support deployment activities and take ownership of assigned deliverables.
• Drive process improvement, automation, and service quality enhancements.
• Provide guidance and training as a subject matter expert.

Required Skills and Qualifications

Experience:

• 5+ years of experience supporting Java-based applications in production environments.
• 5+ years of experience in financial services or related industries.
• 3+ years of experience in a client-facing technical role.
• Experience with SQL/NoSQL databases and query writing.
• Experience with REST API testing (e.g., Postman).
• Experience with incident management and issue resolution processes.
• Experience working in cross-functional technical environments.

Soft Skills:

• Strong problem-solving and analytical thinking ability.
• Excellent communication skills with technical and non-technical stakeholders.
• Strong organizational and time management skills.
• Ability to work independently with ownership and accountability.
• Strong customer-focused mindset and relationship-building skills.

Language Requirements:

• Japanese: Fluent level
• English: Business level

Preferred Skills & Qualifications

• Experience with payment systems or card processing platforms
• Knowledge of PCI DSS or industry compliance standards
• Experience with enterprise-scale or mission-critical systems
• Experience supporting high-availability platforms