Job Description

Job Responsibilities

• Collaborate with the development team to create innovative software solutions

• Participate in technical decision-making, including framework and programming language selection

• Share expertise on selected technologies and development architectures

• Provide support for product development and implement in-house technical solutions

• Develop and manage high-performance systems, databases, and applications

• Create high-level APIs and write clear, maintainable code

• Test software to ensure functionality, quality, and performance

• Troubleshoot, debug, and upgrade existing software as necessary

• Apply best practices for security and data protection

• Produce comprehensive technical documentation

Development Environment

Languages: Java, Kotlin, JavaScript, TypeScript, Go, C#, etc.

Frameworks: Spring, Vue.js, Nuxt.js, .NET Framework, etc.

Infrastructure: AWS, GCP, Azure

Team Structure:
Project teams typically consist of 5-8 members, including members from client development teams. Each team is supported by at least one highly skilled senior engineer to promote skill development through pair programming and other collaborative practices. This role emphasizes long-term development beyond simple coding tasks.

Development Approach

Our approach emphasizes agile development, moving away from the traditional waterfall methodologies commonly used in Japan's financial industry. Most projects begin at the upstream stage through direct contracts, allowing high flexibility in defining "what to build." You will work closely with the client's development team to discuss and decide on technology choices. Responsibilities cover the entire software development lifecycle, including requirements analysis, design, implementation, testing, deployment, and delivering the solution to users.

Required Qualifications

• Experience with one or more of the following frameworks or languages:

  • Spring (Java or Kotlin)

  • Vue.js, Nuxt.js, or Quasar

  • Go

  • C# .NET, ASP.NET

• Minimum 3 years of experience in software engineering or a related field

• For non-Japanese nationals: Business-level Japanese proficiency (N2 or higher)

Preferred Qualifications

• Hands-on experience with cloud platforms such as AWS, GCP, or Azure

• Proven experience working in a collaborative team environment

• Conversational English proficiency

• Participation in product development from the conceptual stage

Ideal Candidate Profile

• Excellent communication skills and a strong commitment to teamwork

Example Projects

Development of APIs for Financial Services
Frontend: TypeScript / Angular / Ionic
Backend: Go, Kotlin / Spring
Authentication: OAuth 2.0 / OpenID Connect / FAPI

In-House Payment System Development for Retailers
Backend: Go, Java
Infrastructure: GCP, Kubernetes (GKE), microservices

Development of Online-Only Financial Services for Major Institutions
Frontend: TypeScript / Vue.js
Backend: C# / .NET Core, ASP.NET
Authentication: OAuth 2.0

Modernization of Core Banking Systems
Backend: Java / Kotlin Spring
Infrastructure: Azure / GCP (multi-cloud)

Reference Number: 06940-0013244624

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