UPSIDER

Fintech · Corporate Payments · Business Lending · Minato, Tokyo

UPSIDER is a Tokyo-based fintech group (UPSIDER Holdings, Inc.) providing corporate payments and financing. Its products include the UPSIDER and PRESIDENT CARD corporate cards, Shiharai.com for card-based invoice payments, growth-debt funds, online lending and card infrastructure for financial institutions.

Its card software gives finance teams real-time transaction data, spending controls, receipt management and accounting integrations. Revenue comes from card, payment, lending and fund services. Its company outline lists Mizuho Bank among its main shareholders, its history records joining Mizuho Financial Group in 2025, and its Cash Boost online lending service launched in June 2026.

Salary range
¥7M – ¥25M
Median
¥9M – ¥12.8M
Remote or hybrid
70%
Most requested
Common areas
  • Operations 3
  • Backend engineering 2
  • Security 2
  • Business development 1

Measured from the 10 listings Ranked has live for UPSIDER. Japanese level, visa signal and skills are AI-graded from each posting and can be wrong — confirm against the employer's original posting before applying.

10

2

Full-time

Japanese?

Remote

Cybersec

Compliance

Security

Drive security governance and risk management for a financial platform, covering risk assessment, ISMS and PCI DSS operations, audits, remediation, incident response, and management reporting.

Full-time

Japanese?

Remote

Security

Fintech

Python

Designs and operates corporate security across architecture, SecOps, and incident response, improving IAM, endpoints, networks, SaaS, and cloud controls.

Full-time

Japanese?

Remote

Go

GCP

K8s

Leads design and delivery of a new Go-based corporate card platform, covering public APIs, multi-tenant architecture, performance, security, testing, and operations.

Full-time

Japanese?

Remote

Operations

JavaScript

Python

Designs, operates, and improves company-wide IT foundations spanning identity, endpoints, SaaS, networks, device management, and automation, supporting a growing financial platform.

Internship

Japanese?

Legal

Operations

Payments

Startup

Supports the Legal team’s receivables-recovery operations by gathering evidence, preparing documents, managing cases and contracts, and improving workflows through automation and AI.

Full-time

Japanese?

Operations

Fintech

Payments

Compliance

Design and improve operations for a platform business providing card, credit, and financial operations to partners. Standardize workflows, coordinate stakeholders, and build KPI monitoring.

Full-time

Japanese?

Project Mgr

Fintech

Payments

GenAI

Lead PMO operations for large partner projects in finance and payments. Coordinate schedules, risks, quality processes, stakeholder decisions, technical discussions, and AI-enabled improvements across multiple projects.

Internship

Residents only

Japanese?

Remote

Inside Sales

Payments

Contact interested corporate customers, understand their needs, guide applications, support card activation and continued use, analyze call data, and improve sales operations.

Full-time

Japanese?

Remote

Fintech

Legal

Compliance

Support new B2B payments and fintech ventures through legal and compliance work, including financial regulations, partnership and licensing agreements, negotiations, and internal-control design.

Full-time

Japanese?

Remote

GenAI

Python

GCP

Design and operate AI-first systems for Legal, Compliance, Risk, HR and Accounting, building data foundations, LLM workflows, evaluation, audit trails and access controls. Full remote and flex.