Solution Architect

  • Tokyo
  • Remote OK - Anywhere in Japan
  • Full-time
  • August 20, 2025
Conditions
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¥5.6M ~ ¥8.5M /yr
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Apply from Japan Only
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No relocation to Japan
(No visa sponsorship from overseas)
Requirements
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Language Requirements
Japanese: Fluent
English: Not Required
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Minimum Experience
Mid-level or above

Job Description

As a DX (Digital Transformation) partner, you will work closely with clients to identify business challenges and get to the root of issues that are not always obvious. You will develop hypotheses and strategies to turn abstract ideas into concrete solutions. Your main responsibility will be to design and implement the software architecture that solves these challenges.

 

Key Responsibilities

  • Requirements Definition and Management
    • Determine and execute appropriate methodologies for both Agile and Waterfall approaches.
    • Understand the client's business to elicit, specify, and document requirements. You will also clarify requirement traceability and non-functional needs.
    • Define and manage scope, prioritizing tasks and negotiating with stakeholders to gain consensus on competing priorities.
    • Facilitate a smooth workflow by making constructive proposals and encouraging input from all stakeholders.

  • Solution Architecture
    • Design high-level architecture that meets the client's current and future business needs. You will guide the team's design and development process through effective communication with stakeholders.
    • Clearly define technology use, including custom development, infrastructure, and third-party services. This includes not only technical aspects but also processes, organization, and operational models.
    • Evaluate alternative architectures by considering trade-offs in cost, performance, and scalability.
    • Provide comprehensive guidance based on relevant architecture, strategies, policies, standards, and practices (including security) to ensure compatibility between existing and future solutions.

  • Software Design
    • Clarify software scope and define components and interfaces (such as UI and APIs).
    • Facilitate the system design process by considering constraints like design standards, quality, feasibility, scalability, and maintainability.
    • Evaluate alternative solutions and their trade-offs.
    • Visualize decisions through prototypes and simulations.

  • Development
    • Process and Test Design: Investigate the feasibility of technical elements and create guidelines and development methods to streamline implementation. You will also design processes to optimize the entire service, including test planning and maintenance.

 

Development Environment:

  • Languages: Python, TypeScript, Java, Golang, etc.
  • Cloud: AWS, Azure (including OpenAI), GCP
  • Development Support Tools: Cursor, Windsurf, GitHub Copilot, etc.
  • Other: React, Vue, Flutter, Terraform, Docker, GitHub Actions, etc.
  • Generative AI Models: GPT, Claude, Gemini, etc.
  • Cloud Generative AI Platforms: AWS Bedrock, Azure OpenAI Service
  • AI-related Tech Libraries: ADK, LangChain, etc.

 

Requirements

  • Experience with requirements definition, basic design, and detailed design.
  • 3+ years of experience in web/mobile system development using modern technologies.
  • Experience creating outputs like API, UI, and database designs.
  • Strong problem-solving and proposal skills.
  • The ability to switch between abstract and concrete thinking when designing systems.

 

Preferred Skills

  • Experience developing consumer-facing (B2C) services.
  • Experience in quality management, including test design, planning, and maintenance.

 

Ideal Candidate Profile

  • Someone who resonates with Monstarlab's mission: "Harnessing diversity to change the world with technology."
  • Someone who embodies our values: "Amplify your impact, Be borderless, Create value, Do what's right."
  • Someone interested in the latest technologies and new services.
  • Someone who is eager to contribute innovative ideas to service development.
  • Someone who wants to deliver valuable services to clients and consumers.

Monstarlab’s mission is to harness diversity and transform the world through technology.

Together with their clients, Monstarlab drives digital innovation and supports business transformation through co-creation.

Monstarlab’s services span digital product development, enterprise system development, design, strategy and operations consulting, and AI-driven development — all aimed at enabling client success and accelerating digital transformation.

The company also places great value on empowering each employee to take on new challenges. In a constantly evolving world, Monstarlab employees are encouraged to embrace change, enjoy the process of taking on challenges, and grow through cross-functional collaboration at the individual, team, and organizational levels.

View Monstarlab's company page

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Solution Architect at Monstarlab
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