Job Description:

Business Overview
Rakuten Group provides over 70 services across a wide range of domains both in Japan and internationally, including internet services such as e-commerce, travel, and digital content; fintech (financial) services including credit cards, banking, securities, e-money, and smartphone app payments; mobile carrier services; and professional sports.

*Our Businesses Key Figures
https://global.rakuten.com/corp/careers/services/

Department Overview

The Fraud Prevention Department is a newly established organization, launched in April 2026 under the direct supervision of the CEO, dedicated to ensuring the sound and sustainable growth of Rakuten Mobile. Our strategic mission is to collaborate with senior management to build robust governance frameworks that balance business profitability and user convenience, ensuring a secure experience for all our users. As a newly formed organization, we offer the unique opportunity to design systems and culture from the ground up, free from traditional constraints.

The department consists of 4 divisions. This role sits within either the Fraud Monitoring. While the work focuses on Rakuten Mobile, the formal employment entity will be Rakuten Group, Inc.

[Mission of the Fraud Monitoring Section]

To ensure that all Rakuten Mobile customers can use our services safely and with peace of mind, the Fraud Monitoring Section is responsible for monitoring suspicious applications and usage, analyzing past fraud cases, and planning and promoting mechanisms that prevent fraudulent orders from occurring.

Position
Why We Hire:

Headcount expansion to strengthen the Fraud Prevention Division

Position Details:

This position is responsible for preventing fraud before it happens, taking early action when fraud is detected, and preventing recurrence, in order to support the further business growth of Rakuten Mobile and to continue providing safe and secure services to all customers.

The specific duties you will be entrusted with immediately after joining are as follows.

1. Operation and improvement of fraud prevention measures (including learning to use dedicated tools)

Using the fraudulent transaction detection system and the blacklist tool of past fraudsters, you will conduct analysis, implement countermeasures, and improve operations and mechanisms to discover new types of fraud and prevent them before they occur.

2. Risk assessment and fraud pattern analysis

Based on the analysis results, you will not only take actions such as adding entries to the blacklist and suspending the use of contracted lines, but also consider and implement measures to prevent the same fraud pattern from recurring.

3. Proposing fraud prevention measures using data analysis

In addition to the tools mentioned above, you will use DOMO data, which aggregates data from the core systems that manage applications and customer information, to consider and propose countermeasures together with analysis results from multiple perspectives. You will align not only within the Fraud Prevention Division but also with the Marketing division to decide whether implementation is feasible, and then work on implementation.

After you become accustomed to the main duties above, you may also be assigned the following duties.

4. General duties related to KYC (identity verification at the time of contract) and fraud prevention

Detecting and analyzing fraudulent acts in the identity verification process, such as forged identification documents and falsified contractor information, and improving operations.

5. BPO vendor management (including escalation handling)

Coordinating the operating structure, holding regular meetings, and managing outsourcing fees with the outsourcing partner that handles routine fraud monitoring operations (currently the BPO Business Section, Solution Business Department, Rakuten Total Solutions).

A Day in the Role

- Team meeting (morning briefing): report the previous day's results and confirm the day's plan

- Fraud pattern analysis and risk assessment

- Consideration of measures to prevent fraudulent applications, and escalation handling with the BPO vendor

- Preparation of the fraud monitoring structure for the following day onward

Why Join Us?:
1. An environment where you can thrive even without prior experience

Many of our current members started out with no prior experience. Thanks to our thorough support system, you can steadily master your duties one step at a time and aim to become a professional in fraud prevention and data analysis.

2. Take charge of the strategy of a rapidly growing business directly under the COO

As an organization directly under the COO, your proposals are directly linked to management decisions. You can experience the overwhelming speed that comes from the field and management working as one.

Work Environment

Fraud Prevention Department: approx. 20 members

Fraud Monitoring Section: 5 members (mainly members in their 20s to 30s)

Mandatory Qualifications

People with 5 or more years of work experience who are interested in fraud prevention or information security operations

* Hands-on experience in fraud prevention is not required.

* We are looking for people who enjoy analyzing information and who are good at investigating a single issue in depth.

Desired Qualifications

- Experience in fraud prevention or information security operations

- Experience working in the internet services industry

- Experience participating as a member of a development project
- Conversational level Englishh

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