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Jobs→シェルフィー株式会社→In-house Development / Flex Time | Challenge a Huge Market Worth 63 Trillion Yen | Full-stack Engineers Wanted to Support the Transformation Phase of Vertical SaaS with Over 330,000 Registered Companies

In-house Development / Flex Time | Challenge a Huge Market Worth 63 Trillion Yen | Full-stack Engineers Wanted to Support the Transformation Phase of Vertical SaaS with Over 330,000 Registered CompaniesEnglish summary from Japanese

シェルフィー株式会社

✓ Detailed
Salary
660万円 〜 816万円
Apply on FINDY

Role summaryEnglish summary from Japanese

English summary for screening — check the original posting before applying.

Shellfy is seeking Full-stack Engineers to support the transformation phase of their vertical SaaS product, Greenfile.work, which digitizes complex construction site operations. You will contribute to new feature development, technical debt reduction, and improving the development process for a platform used by over 330,000 companies.

Must-haves

  • 3+ years of experience in developing and operating commercial web applications (language not specified)
  • Must be able to work onsite (3-4 days/week recommended for team building)

Nice-to-haves

  • Experience developing B2B business systems
  • Practical experience with Python, Kotlin, React
  • Experience and improvements with a focus on UX
  • Experience as a development lead
  • Project management experience
  • Product management experience

Tech stack

JavaScriptTypeScriptPythonKotlinReactDjango REST frameworkSpringBootAWS (EKS, ECS, Aurora Postgres, DynamoDB, OpenSearch, S3, Lambda)CodePipelineCodeBuildCDKDatadogCloudWatchGitHub

Work style

Hybrid work is possible, with a recommendation of 3-4 days onsite per week in Tokyo (Meguro-ku). Core hours are 11:00-17:00 with flexible start/end times.

Other notes

Annual salary: ¥6,600,000 - ¥8,160,000. No bonus. Relocation support (commute allowance up to ¥24,000/month, proximity allowance for living within 3km or 1.5km of the office).

About the Company

シェルフィー株式会社

Headquarters
東京都目黒区大橋2-22-42 No.R池尻大橋 B1F
Visit Website
Posted7/23/2026
Sourcefindy