3 System Administrator jobs

Our Linux Team ensures our trading servers work so we can trade. You will work in a highly-customized environment where proprietary tools and technology run. You will be expected to help build the pioneering tools to keep our systems best-in-class while enabling our technology evolution in a controlled way. Who we are: Optiver is a tech-driven trading firm and leading global market maker. As one of the oldest market making institutions, we are a trusted partner of 70+ exchanges across the globe. Our mission is to constantly improve the market by injecting liquidity, providing accurate pricing, increasing transparency and acting as a stabilizing force no matter the market conditions. With a focus on continuous improvement, we participate in the safeguarding of healthy and efficient markets for everyone who participates. Optiver Chicago’s culture parallels the energetic city we’re immersed in. Home to the Chicago Board of Trade, Chicago Board Options Exchange, and Chicago...

We are looking for an IT System Administrator to join our Service Management Team in Pisa or Milan. You will play an important role in delivery support and maintenance of LIST services and you will contribute to the implementation process to ensure that all aspects of operability are delivered whilst ensuring that existing service levels are maintained or improved.   Your responsibilities Provides technical support/delivery capability for LIST services. Provides trouble shooting on technical issues with the aim to reduce incident recovery time. Collaborates and acts with releases and deployment of services. Monitors LIST solutions. Participates in the analysis and design of complex solutions and requirements definition, including translating technical and business requirement into physical installations. May handle customer inquiries. Participates in activities related to IT security and cybersecurity: support recovery programs, run system analysis,...

Solaris System Administrator - Contract A Solaris System Administrator is responsible for installing, configuring, maintaining, and troubleshooting the Solaris operating system on servers within an organization, ensuring optimal performance, security, and system availability, often including tasks like patching, user management, backup operations, and disaster recovery planning specific to the Solaris platform.  Qualifications for a Solaris System Administrator: •    5+ years of experience in Solaris administration, with demonstrated expertise in managing enterprise-class environments. •    Deep expertise in Solaris operating system administration (across various versions)  •    Proficiency in shell scripting (bash, ksh) for automation and system management •    Understanding of network protocols (TCP/IP, DNS, NFS) and network configuration on Solaris  •    Knowledge of storage management solutions on Solaris systems •    Familiarity with system security best practices on...