DevOps Systems Administrator

【企業概要】
アメリカに本社を構える世界最大規模のゲームソフト販売会社。日本のモバイル・ソーシャルゲームマーケットの急拡大に呼応して、2011年に日本市場に参入。
The world’s largest game software company, developing entertainment content for all types of platforms including consoles, hand-held devices, PCs and mobile phones, and distributing content all over the world. 
【概要】
We’re looking for candidates with experience in both network and Unix/Linux administration, with high energy, dedication, and passion for technology. 
The candidate should be able to partner with the Operations Development Director and Technical Lead to estimate and execute projects and deliver excellent results. He or she should have demonstrated ability to work effectively with large-scale systems and possess proven ability to multi-task and prioritize tasks. This position requires excellent troubleshooting skills, strong attention to detail, with strong focus on uptime and predictability. This role will also involve some on-call support duties.


Primary Responsibilities: 
• Directly supports game server environments, from development to production.
• Performs OS configuration and management. 
• Troubleshoots application, network, and server-level problems.
• Implements productivity enhancing tools and 3rd party/Open Source tools for systems administration activities. 
• Assists with set up of infrastructure for load and stress testing and analysis of systems behaviours under load. 
• Sets up and maintains monitoring systems. (OpenNMS, Splunk, Cacti, Nagios, Orion, etc) 
• Designs and develops extensive scripting and other automation tasks. 
• Reviews log files and other server monitoring data for problems and perform proactive maintenance.
• Maintains documentation of systems configurations and procedures, including runbooks for live support. 
• Assists users with problem resolution and answer system usage questions.
 • Partners with Development teams, QA, DBAs and other SysAdmins to develop and implement process improvements.
• Partners with other operations teams, IT, and external hosting providers to implement and maintain secure and scalable infrastructure.
• Mentors other operations team members and provide training/leadership when appropriate. 


Qualifications: 
• BS in Computer Science preferred
• 4-5 years’ relevant experience in Linux/Unix Systems administration (especially CentOS/RedHat), including design, implementation, ongoing administration, and support of critical systems 
• Hands-on experience working with various network technologies – NLB, VPN, Firewall, Ethernet Switches & Routers, Sniffers, TCP/IP, Network Subnetting, VLANs, etc 
• Demonstrated expertise in OS security fundamentals for publicly accessible Linux servers 
•Demonstrated experience of common scripting languages (Perl, Shell, Python, PHP, the more the better)
•Experience with LDAP, DNS, DHCP, NIS, NFS, NAS. 
•Experience with automation systems such as BuildForge, Jenkins
•Experience with setting up data warehousing and OLAP type solutions/systems. 
•Experience with setting up and maintaining virtual environments using ESX, XEN, etc. 
•Working knowledge of SQL database services (Oracle, MySQL, MS SQL Server) 
•Working knowledge of backup and restore solutions in a Linux environment
•Familiarity maintaining routing protocols (OSPF/BGP)
•Strong communication skills, to partner with people and problem solve to reach common goals.
Good to have:
•Windows Server 2008 administration experience a plus
•Experience with Java JDK configurations for highly scalable server systems. 
•Experience with Cloud based server deployments (EC2, OpenStack, etc) 
•Working knowledge of Confluence

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