Save Job Back to Search Job Description Summary Similar JobsLead core system design for a major digital transaction platformDrive modernization and feature expansion in a fast‑scaling environmentAbout Our ClientA leading digital services provider operating a large‑scale online sports entertainment platform and associated electronic payment solution. The organization manages both its own consumer services and provides OEM offerings to partner brands across Japan.Job DescriptionLead investigation, design, implementation, and testing for system enhancements, migrations, and new feature developmentCollaborate with cross‑functional members to maintain platform stability and performanceContribute to architecture discussions and improvement initiatives across PHP and Java/Kotlin servicesEnsure high reliability and security for customer‑facing, transaction‑heavy systemsThe Successful ApplicantMust‑have:Professional experience designing and developing applications using PHPHands‑on development experience with Java or KotlinStrong understanding of RDBMS design and implementationAbility to communicate in daily conversational JapaneseNice‑to‑have:Experience developing or operating large‑scale online servicesExperience in multinational development teamsWhat's on OfferOpportunity to influence core system architecture for a widely used digital platformExposure to both consumer‑facing service development and OEM project workCollaborative, multicultural engineering environmentCareer growth through complex, large‑scale technical challengesContactSerena WuQuote job refJN-032026-6977331Phone number+81 3 6627 6137Job summaryFunctionITSpecialisationProgramming / DevelopmentSpecialisationRetailLocationTokyo 23 WardsJob TypeTemporaryConsultant nameSerena WuConsultant phone+81 3 6627 6137Job ReferenceJN-032026-6977331Company TypeForeign Multinational
