Senior UNIX System Administrator - Operations

Citi is one of the top global financial institutions. By Joining Citi, you will become part of a global compute and operations organization whose mission is to serve as a trusted technical partner to our clients by responsibly maintaining servers to the latest security standards, implementing new technologies that enable our client growth and overall economic progress.

Team/Role Overview

We are part of global compute and operations team, we support about 24K Dev/UAT/Prod/COB UNIX/Linux servers across three regions (APAC/EMEA/NAM) following Sun support model ensuring work-life balance. Server estate that we support includes mostly RedHat Linux with a mix of VCS clusters/standalone and physical/virtual servers. Team is of subject matter experts who maintains server integrity, security, and stability. We extend ourselves as a trusted partner to our clients and drive various infrastructure projects and automations.

What you’ll do

We are looking for an experienced and skilled Unix administrator to join our team. The Unix Admin is responsible for the installation, configuration, and maintenance of our Unix systems. The day-to-day responsibilities include troubleshooting server errors, responding to user issues, coordinate and implement changes among various infra teams, understand and maintain servers to latest security standards and drive infra projects. A successful candidate should be able to quickly recognize trends and issues, identify existing risks, foresee upcoming risks, and take the necessary steps to eliminate them.

• Applicant would be the face to application partners from UNIX operations perspective & acts as an interface between stakeholders such as Application, Prod support, Database, Middleware, and Datacenter teams.

• Provide Architecture and design reviews for the client app teams , troubleshoot and fix issues reported by user, system, or wellness reports.

• Perform OS checkout post build/upgrade & ensure application health status by coordinating with respective application/ Prod Support team.

• Remediate compliance KRI issues, maintain servers to the Citi security standards, and maintain stability of servers.

• Responsible for capacity monitoring, analysis & forecasting of resources and ensure to have adequate resources for infra/ application stability.

• Design COB architecture, its implementation, and maintain COB Test procedure including automation. Supporting high availability, fail-over, fallback using Cluster Server using native & third-party tools.

• Participating Major Incident calls on time & ensure timely recovery of the services to clients. Perform Root Cause Analysis from SA perspective for all issues and third-party vendor co-ordination where applicable.

• Perform change reviews, approvals and participate in Change advisory meetings when required.

What we’ll need from you

• 5 years’ experience in RedHat Linux administration is recommended, but not required if candidates prove strong technical skill and right attitude.

• Applicant should possess knowledge of server support, Veritas Clustering, GPFS, shell/perl scripting and Ansible automations.

• We are looking for a self-motivated experienced professional with good communication and technical skills.

• Applicant should be willing to take up challenging tasks, collaborate with the team and builds partnership with our clients.

What we can offer you

This is a role that'll offer you the opportunity to build an in-depth knowledge of financial services operations. Every day you will be interacting with various clients, solution architects, Engineering and other infra teams that will help you develop new technical skills that can drive your career”. By joining Citi Compute and Operations Poland, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed) and enjoy a whole host of additional benefits such as:

· Private Medical Care Program

· Life Insurance Program

· Pension Plan contribution (PPE Program)

· Employee Assistance Program

· Paid Parental Leave Program (maternity and paternity leave)

· Sport Card

· Holidays Allowance

· Sport and team recreation activities

· Special offers and discounts for employees

· Access to an array of learning and development resources

· A discretional annual performance related bonus

· A chance to make a difference with various affinity networks and charity initiatives

Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self every day. We want the best talent around the world to be energized to join us, motivated to stay, and empowered to thrive.

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Citi is an equal opportunity and affirmative action employer.

Qualified applicants will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

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