Senior Backend Developer

JELLYFISH • Japan

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Join JELLYFISH as a Senior Backend Developer to design, develop, and maintain scalable backend systems in Japan. Collaborate with cross-functional teams to build high-performance APIs and cloud-based solutions. Requires 2+ years of backend experience and open to both Japanese and international candidates with business-level Japanese proficiency.

Key Highlights

Visa sponsorship and housing support provided for overseas applicants

Bilingual work environment (Japanese + English) with hybrid/remote options

Quick, human-centered hiring process with free interview coaching

Ready to take your backend career to the next level in Japan? We’re looking for talented Backend Developers to join exciting teams across Japan!

Whether you’re experienced with Java, Python, PHP, Ruby, Go, C#, Node.js, Kotlin, or another language, we’d love to hear from you.

Salary Range: ¥5M – ¥10M+ per year

Depending on role and experience. Senior roles may go beyond this range!

Who We’re Looking For?

* 2+ years of backend development experience * JLPT N3 or higher is preferred, but not required * Currently living in Japan * Japanese and foreign nationals are welcome!

No JLPT? No problem!

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Posted Oct 27, 2026

Employment Full-time