Cyber Security Engineer

Job Type
10,000,000 JPY - 15,000,000 JPY per year + WFH + Company Benefits + Bonus
Japanese Level
English Level
Advanced (TOEIC 860)
Start Date


A growing FinTech company is looking for a talented Cyber Security Engineer (Mobile) to work in their Security Team. You will be reporting to the CISO and work with senior management directly. 


- Although cybersecurity is everyone’s responsibility, the security team is primarily responsible for solving some of the most challenging and exciting problems to mitigate cyber threats that are common organization-wide and industry-wide.

- As the digital world moves exponentially, the company is constantly aligning its cybersecurity strategy, especially in today’s dynamic environment.  



- Plan and implement solutions to business challenges, working directly with other engineers and product management on mobile security

- Develop features, maintain and improve existing SDK/applications to support products

- Create security tooling and automation to make teams more efficient

- Participate in all phases of the Software Development Life Cycle, implementing features and addressing issues

- Enjoy a wide scope of responsibility and lots of flexibility in selecting the appropriate technical solutions to business challenges and opportunities

- Own and lead mobile app security strategy.

- Partner with product owners, developers, QA, and architecture in ensuring that security is embedded throughout the SDLC.

- Provides guidance to staff on insights in changing security standards

- Develop strategies to assess 3rd party libraries for mobile

- Perform dynamic and static scans for all mobile products

- An active advocate of mobile development platforms (iOS and Android Native) through both internal and external developer communities

- Remain an active learner in all technologies related to iOS, Android development (Java, Kotlin, Swift, swift migrations, iOS SDK, Xcode, 3rd party libraries, iOS developments, etc.)


【Company Details】
A successful Fintech Company, provides a payment platform that lets online merchants accept payments in real-time from consumers without credit cards.


【Working Hours】

9:00 - 18:00 (Mon - Fri) (Optional Work-From-Home)


Saturday, Sunday, and National Holidays, Year-end and New Year Holidays, Paid Holidays, Special leave, etc.


【Services / Benefits】
Social insurance, Transportation Fee, No Smoking Indoors (Designated Smoking Area) etc.

Required Skills

- Experience with mobile security in finance, ideally in a large multinational environment

- Experience in threat hunting, pen-testing, or threat analysis with a focus on mobile applications

- Experience identifying, investigating, and responding to complex attacks on mobile and API technologies

- Strong understanding of threat landscape in terms of the tools, tactics, and techniques of threats employing both commodity and custom malware

- Extensive experience with attack emulation tools

- Experience in developing attack Tactics, Techniques and Procedures (TTPs) using the MITRE ATT&CK Framework construct

- Solid understanding of cybersecurity training needs and operations (tools, processes and techniques in cyber)

- Familiar with Atlassian products, Git, and CI/CD pipelines

- Required Certifications: GIAC Mobile Device Security Analyst (GMOB) (or ability to acquire within probation period)

- Desired certifications: OSCP, or CISSP, or CCSP, or AWS Certified Security