• Part-time

Publication date： 2026.11.06

[SHIFT] IR Threat Expert / Security & Network Service Department

  • System Engineers / Infrastructure Engineers / Web Engineers / Game Developers
  • Tokyo
  • Salary： JPY 9,000,000 - 15,000,000
【SHIFT】IRスレットエキスパート/セキュリティ・ネットワークサービス部
職種Position System Engineers / Infrastructure Engineers / Web Engineers / Game Developers
会社概要Company profile [Company] SHIFT

They are a company that specializes in quality assurance and testing, which are essential for software development. In order to deliver safe and secure products to a world filled with software products that cannot exist without them, they have developed a unique business model that provides cross-sectional quality assurance services, from consulting in the upstream process of development projects, development work that focuses on quality, and testing work just before product release.

They are involved in a wide range of products and services, including enterprise fields such as finance and distribution, and entertainment fields such as web and games, and participate in projects as a primary contractor through direct transactions with user companies.

In a blue ocean market with no competitors, they are a company that has continued to grow sales by more than 150% annually, creating a virtuous cycle in which employees are rewarded with rewarding work and results.
仕事内容Job description You will lead the work from initial response to cyber incidents occurring at client companies through root cause investigation to the development of recurrence prevention measures.
- Initial response (triage), digital forensics, incident investigation and analysis reporting
- Team leadership and client negotiation as the final decision-maker for technical judgments
※Looking ahead to future organizational growth, depending on your aspirations, we expect you to lead both technical and organizational management as a playing manager.
Appeal of the Work
【Rewarding experience in being involved in "building the team" as a core member】
This recruitment is for the phase in which we are going to fully establish our IR specialist team and services. In addition to day-to-day incident response and forensics, you will also take part in considering matters to be decided going forward, such as service content, response processes, and role allocation within the team.
Being able to contribute to building the team's foundation while making use of your experience and knowledge is an appeal unique to this phase.
【Not ending with investigation. Going beyond to solve clients' issues starting from IR】
SHIFT is not a specialized security company; it has departments with a variety of expertise.
Therefore, rather than ending with clarifying the causes and damage through incident response, we can connect follow-up actions within SHIFT, such as improving systems and security based on investigation results.
Beyond leveraging IR expertise to clarify the full picture of an incident, we link the results to the client's specific measures and improvements. Being able to take part in solving issues beyond the investigation, as an IR specialist, is an appeal unique to SHIFT, which has diverse areas of expertise.
応募資格Requirement ・DFIR practical experience of 3 years or more
・Experience in disk forensics and Windows event log analysis
・Experience reporting to and negotiating with key decision-makers at clients (executives, heads of information systems departments, etc.)

[Preferred requirements]
・Experience in malware analysis and EDR/SOC operations
・Experience in cloud log analysis (M365/AWS)
・Holders of SANS GIAC certifications (GCFA, GCFE, GCIH, GREM, etc.), or those who are willing to obtain them
・Ability to read English-language academic papers
・Ability to give logical explanations based on business impact and coordinate smoothly with relevant parties
・A sense of ethics and mission to make decisions that prioritize the safety and trust of clients under any circumstances during incident response
・Agreement with SHIFT's business content and vision
・Ability to work with aspiration, motivation, and a sense of responsibility
・Interest in organization building and new business development
・Interest in new technologies and enjoyment of thinking about how to utilize them
・Ability to accept things openly and honestly
・Attitude of enjoying work
Salary
Expected annual salary: approx. 9,000,000 yen to 15,000,000 yen
Monthly salary: 750,000 yen to 1,250,000 yen
日本語力Japanese level Business
雇用形態Employment type Part-time
勤務エリアLocation Tokyo
勤務時間Working hours Discretionary work (9:00-18:15)
想定年収Salary JPY 9,000,000 - 15,000,000
条件・待遇Condition Fully weekly two days off system
Insurance
Fully provided
Contract period
No fixed term
Probation period
Yes, 3 months
Overtime work
Yes (average of approximately 7.2 hours per month *Actual results for the period ending August 2025)
Smoking prevention measures
Indoor smoking prohibited (smoking room available)
Salary revision
Twice a year
・Maternity, childcare, and nursing care leave system
・Comprehensive social insurance (employment insurance, workers' accident compensation insurance, health insurance, employees' pension insurance)
・Commuting allowance (with upper limit)
・Skill-up support (qualification acquisition support) system
・Internal job posting system
・SHIFT partner nursery system
・Employee stock ownership plan (ESOP) trust system
・Available use of facilities partnered with the health insurance society (Tokyo Information Service Industry Health Insurance Society)
・Bicycle commuting system
・Club activities
・Various in-house events (employee general meetings, awards), etc.
Other initiatives

[Employment type]
Regular employee
Posting date
2026/6/8
[Working hours]
9:00–18:15 (breaks 12:00–13:00, 15:00–15:15) Actual working hours 8 hours
*Employees under the specialized discretionary work system: deemed working hours of 8 hours per day
Break time
12:00–13:00, 15:00–15:15
[Holidays and leave]
・Fully weekly two days off (Saturday and Sunday)
・Public holidays
[Leave]
・Sick leave / nursing care leave
・Year-end and New Year holidays
・Paid leave (10 to 20 days)
・Bereavement and celebration leave
(Wedding leave, child's wedding leave, spouse's childbirth leave, etc.)
選考についてProcess Document screening
↓
1st Round Selection (Head of the Assigned Group)
↓
Final Selection (Head of the Assigned Department)
↓
Job offer
↓
Joining the company
※The number of selection rounds may change depending on the situation.
※Interview dates and start dates are negotiable.
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