株式会社 UPSIDER
Open positions
B257. FullStack Engineer - 法人審査基盤(Hestia / CfC)
Full-stack TypeScript engineer at UPSIDER (Tokyo-based fintech) building its corporate credit-review/underwriting platform: customer onboarding/eKYC screens, internal review-operator admin tools, and shared backend APIs/event integrations. Stack: React 19, Node.js/Hono, Prisma/PostgreSQL, gRPC/Pub/Sub, GCP; full remote, full flex.
B302. Corporate IT (Corporate IT Architect / Engineer)
Corporate IT Architect/Engineer at UPSIDER, a Japanese fintech, who designs, deploys, and runs company-wide IT infrastructure — identity (Okta), endpoint management (Intune MDM), SaaS management, and office/remote networking — while automating IT operations via APIs, scripts, and workflows. Full-remote, full-flex role based in Tokyo.
B243. Backend Engineer - 基盤開発(Solaris)
Backend engineer (Tokyo office, full-remote/full-flex) to lead design, development, testing, and operations of a new corporate-card platform foundation for alliance partners at UPSIDER, integrating with the existing payments stack. Stack: Go, gRPC/REST, PostgreSQL, GCP, Kubernetes, Terraform.