OPEN POSITION

Lead Software Engineer

Lead Software Engineer

Responsibilities

  • Design and implement new features across the company's products and services

  • Lead technical decision-making and drive architectural improvements

  • Collaborate cross-functionally with the R&D team, Business Development team, and external partners to define requirements and deliver product features end-to-end

Required Skills

  • Experience leading engineering teams or projects

  • 3-5+ years of work experience in software development

    • TypeScript, JavaScript, React

    • Python (Python-based frameworks)

    • AWS

    • Docker

  • Experience using GitHub

  • Experience with CI/CD

  • Familiarity with AI tools used in development

  • Business-level English

Preferred skills and experience (Nice to have)

  • Knowledge and skills in machine learning techniques

  • Experience in using satellite data, geospatial data, GIS tools, etc.

  • Experience running or participating in data science competitions (e.g., Solafune, Kaggle)

  • Experience in working outside of your area of expertise (UI / UX design, PM)

Tools

  • Cloud service platform: AWS, GCP, Azure

  • Development languages: Python, TypeScript, JavaScript, React

  • Development frameworks: Python-based, js/ts-based

  • Container management: Docker, Docker Compose

  • Database: PostgreSQL

  • Project management: Github, Notion

  • Internal communication: Slack, Discord, Notion

  • AI tools: Github Copilot, ChatGPT / Codex, Claude

Benefits

Hiring Process

  1. Resume Screening
    • Submit your resume including relevant experience, education, skills, and accomplishments

    • Highlight any experience in engineering leadership, project management, or technical mentorship

  2. Case Study or Problem-solving Exercise

    • Complete a case study or problem-solving exercise to demonstrate your strategic thinking and decision-making abilities

    • Present your findings and recommendations to the hiring team

  3. Initial Interview

    • Discuss your background, skills, and experiences related to the Lead Software Engineer role

    • Assess your understanding of organizational dynamics and ability to work closely with senior leadership

  4. Panel Interview

    • Engage in a panel interview with key stakeholders, including the CEO and other members of the leadership team

    • Discuss your fit for the role, leadership style, and approach to driving organizational success

  5. Reference Check and Background Verification

    • Provide references from previous employers or colleagues who can speak to your qualifications and performance

    • Undergo background verification checks as required by company policy

  6. Offer and Onboarding

Work Conditions

Job Type

Full-time (after 3-month trial period) Outsourcing contracts are acceptable (for freelancers)

Work Type

Operate remotely or from the office

Location

Flexible (Remote or Tokyo Office-based)

Salary

8,000,000 JPY / year or more (May vary depending on your location)

Work Hours

9:00 - 18:00 (including 1 hour break) Five-day work week

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We’re moving to a new address 📦

Starting July 1, Solafune corporate website will move from https://company.solafune.com/ to solafune.com. Your account, data, and services will remain exactly the same. Only the website URL is changing. Please update your bookmarks to the new address. Visits to the old domain will continue to redirect automatically. Please contact us here for any questions.

We’re moving to a new address 📦

Starting July 1, Solafune corporate website will move from https://company.solafune.com/ to solafune.com. Your account, data, and services will remain exactly the same. Only the website URL is changing. Please update your bookmarks to the new address. Visits to the old domain will continue to redirect automatically. Please contact us here for any questions.

We’re moving to a new address 📦

Starting July 1, Solafune corporate website will move from https://company.solafune.com/ to solafune.com. Your account, data, and services will remain exactly the same. Only the website URL is changing. Please update your bookmarks to the new address. Visits to the old domain will continue to redirect automatically. Please contact us here for any questions.

Got a question? We’d love to hear from you.

Got a question? We’d love to hear from you.

Got a question? We’d love to hear from you.

Company Name

Solafune, Inc.

Representative

Ren Uechi

Address

Marunouchi Building 28F, 2-4-1 Marunouchi, Chiyoda City, Tokyo, 100-6390

© 2026 Solafune.Inc. All rights reserved

Company Name

Solafune, Inc.

Representative

Ren Uechi

Address

Marunouchi Building 28F, 2-4-1 Marunouchi, Chiyoda City, Tokyo, 100-6390

© 2026 Solafune.Inc. All rights reserved

Company Name

Solafune, Inc.

Representative

Ren Uechi

Address

Marunouchi Building 28F, 2-4-1 Marunouchi, Chiyoda City, Tokyo, 100-6390

© 2026 Solafune.Inc. All rights reserved