1. Administer, maintain, logging and support Linux (RHEL/Suse/Ubuntu/CentOS/Solaris or any other) operating systems and exposure to the UNIX flavours (HP-UX, Solaris & AIX or any other). 2. Fixing and analyzing bottlenecks for UNIX related issues across all level and or resolve major incidents and technical escalations within agreed SLAs and quality which includes but not limited to: (a) Problem Management: Perform root cause analysis for problems and major incidents, provide workarounds to ensure business continuity and prepare RCA reports. (b) Change Management: Prepare Implementation plan, rollback plan and test plan, risk and impact analysis for critical or complex changes. Create and review the change plan and documentation 3. Participate in CAB meetings as and when needed and assist change manager in techno-operations decision process 4. Install hardware and software, maintain appropriate service levels, performance tuning and firmware upgrades across multiple hardware platforms. 5. Perform advance tasks such as, capacity planning, performance monitoring, provide recommendations for improvement and implement or oversee implementation of the recommendations. 6. Perform system software upgrades including planning / scheduling, testing, coordination, and maintaining integrity of operating system environment. 7. Harden operating system parameters in line with client / Dimension Data security policy, standards or best practices. 8. Respond to outages both during normal business hours and after-hours on a need basis (on-call support). 9. Coordinating and interfacing with outside vendors, end users, other department team members, and service providers to resolve issues. 10. Analyze data, oversee and contribute to service improvements. 11. Documentation, knowledge sharing and training of L1 & L2 members. Oversee tasks executed by L1 & L2 members and stand in for them if needed.