Main Job Responsibilities

Your responsibilities will include infrastructure engineering tasks such as infrastructure design, construction, and operation and maintenance.

• Design, build, and operate staging network infrastructure.
• Design, build, and operate network and server operation systems and tools.
• Vulnerability assessment of customer environments, security product implementation, construction to operation and maintenance.
• Investigation support, early resolution, and report generation during security incidents.
• SOC and CSIRT construction support.
• IT security architecture design support.
• Vendor control.

We maintain stable relationships with various leading companies in the web industry, including Recruit Group, Rakuten Group, and CyberAgent Group. As members of a production company, our employees participate in client projects, allowing them to acquire diverse skills and expertise that would be difficult to achieve by staying with one company for many years!

What kind of company is Extreme?

Since its establishment in 2005, Extreme has consistently developed diverse businesses where digital talents such as creators and engineers can thrive. Our business areas are continuously expanding, including game development and operation, application development, web service development, and cloud platforms.

The total number of employees in the group is over 600.

Members from a wide range of professions, including engineers, designers, directors, planners, and PMs, are part of our team.

Creators and engineers form a single team for each client project to solve challenges. The advantage is that you can participate in various projects, allowing you to constantly acquire new skills without specializing.

Extreme ensures that employees share technologies and know-how, constantly updating them, enabling creators and engineers to adapt to changing times.

Working Environment

Work Style Reform

Extreme aims to be a company where it is easy to work, establishing various systems such as holidays, vacations, and various welfare benefits to create a work-life balanced environment. We also support employees in taking and returning from maternity and childcare leave! This environment is suitable for those who want to work long-term with peace of mind.

• 127 annual holidays
• Average overtime 9.5 hours
• 100% childcare leave acquisition rate (May 2017 - March 2025)
• Toshima Ward Work-Life Balance Promotion Certified Company (13th term)

Commuting System

While it varies depending on the project, 70% of all employees work remotely at least once a week.

Skill Up Support

We have extensive systems to help you increase your skills and knowledge.

• Qualification acquisition support system (e.g., Information Technology Engineer Examination, Nissho Bookkeeping Test)
• Business etiquette training
• Employee capability improvement training
• OJT training
• Creator/Engineer & Engineer training
• President's award system
• Book purchase system
• eaTech (theme-based technical training system) and others.

Employee Interaction and Discount System

• Club activity subsidies (e.g., game club, darts club, basketball club, light music club)
• Employee Super Meeting (a festival event held with all employees participating!)
• C&E Appreciation Gathering (held once a month, gathering creators & engineers who joined in that month for a networking party)
• Discounts at 40 nationwide resorts, restaurants, and sports facilities
• Club Off system (significant discounts on movie and theater tickets, travel, and restaurants)

For more details on welfare benefits and the working environment, please visit our website.

Application Requirements

Required Skills

• Experience with either Linux/Unix server operation or Windows server operation
• Experience with server command operations
• Server construction experience
• Experience with L2-L3 switch configuration and operation
• Knowledge of firewall (F/W) configuration

Desired Skills

• Experience as a network engineer at a telecommunications carrier
• Experience with router/switch design, construction, and operation using BGP
• Knowledge/experience with load balancers
• Experience with service application development/operation, Linux utilization skills, and server operation
• Flexible communication skills
• Cooperative personality

Clients

Extreme leverages its reputation and credibility as a listed company to conduct business with many companies in Tokyo, including major IT firms. You can participate in various projects such as web service and application development, leading to skill improvement!

Client Examples

• Asahi Shimbun Company
• AbemaTV, Inc.
• AlphaPolis Co., Ltd.
• M3, Inc.
• Gurunavi, Inc.
• J-Stream Inc.
• ZUU Co., Ltd.
• Zenrin Co., Ltd.
• tenso Co., Ltd.
• Nomura Research Institute, Ltd.
• Persol Cross Technology Co., Ltd.
• MISUMI Group Inc.
• U-NEXT Co., Ltd.
• Rakuten Securities, Inc.
• Recruit Co., Ltd.