Senior Software Engineer
- Tokyo
- Remote OK - Anywhere in Japan
- Full-time
- September 3, 2026
Description
Solafune is a technology company that tackles social challenges faced by government agencies, corporations, and international organizations using AI and data analysis. As our business grows, the scope of our technology projects is rapidly expanding, including government-related projects, joint projects with large corporations, and our own products and R&D.
In these projects, the technical requirements and solutions are not always clearly defined from the outset. As the project materializes, it's necessary to organize the challenges, identify the required technologies, and consider the optimal approach from multiple options such as AI, Software, Data, Cloud, and Security.
Therefore, we are currently seeking a Senior Software Engineer with a strong foundation in Software Engineering/Computer Science and expertise in their respective fields, who can organize ambiguous technical challenges and autonomously lead from technology selection to design and implementation. You don't need to be proficient in all technologies. We are looking for someone who can quickly grasp the necessary areas while leveraging their expertise to advance projects from a technical standpoint.
Job Description
Depending on the project, experience, and expertise, you will be responsible for the following tasks:
- Technical lead for government agencies, public institutions, and large corporations
- Clarification of technical challenges and requirements through dialogue with clients and business sides
- Architecture design, technology selection, and development
- System and application development combining AI, Software, Data, Cloud, etc.
- Leading from PoC and technical verification to production implementation and operation
- Research, verification, and introduction of new technological areas
- Collaboration with engineers, research teams, and business sides
Attractiveness of this position
- Involvement from the stage where the technical solution is not yet determined: Instead of simply implementing predetermined specifications, you can be involved from the stage of "how to solve this problem with technology," and consistently lead from technology selection, design, verification, and implementation.
- Expand your technical domain based on your expertise: You will work on different technical challenges depending on the project, such as AI, Software, Data, Cloud, and Security. You can leverage your strengths while continuously challenging yourself in new areas.
- Lead projects with significant social impact: Through projects with government agencies, public institutions, large corporations, and international organizations, you can connect technology to solving real-world social problems.
Requirements
- At least 5 years of practical experience in software development
- Experience leading development from design and technology selection to implementation
- Experience independently devising solutions to uncertain technical challenges and moving projects forward
- Comfortable reading and writing technical information in English, using translation tools, etc.
Preferred Experiences
- AI / Machine Learning / LLM
- Backend / Web Application
- Data Engineering / Data Analysis
- Cloud / Infrastructure
- Security
- Development using AI Coding Tools
- Experience with client projects for government agencies and large corporations
- Experience as a technical leader in a team or project
- English communication skills
We are looking for
- Individuals with high technical skills and expertise in their respective fields
- Individuals who can clarify issues from ambiguous problems and devise technical solutions
- Individuals who can quickly grasp new technologies, going beyond their own area of expertise as needed
- Individuals who can move projects forward while understanding not only the technology but also the business and customer objectives
About Solafune
Solafune integrates multi-domain intelligence across space, cyber, and physical environments to build actionable, sovereign decision systems.
HACK THE PLANET
Solafune is a global team of innovators and trailblazers leveraging geospatial technology and advanced data to address complex social, environmental, and industrial challenges. By connecting intelligence across domains, they transform data into actionable insights that enable better decisions and create meaningful impact.
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