LinuxONE Hypervisor (zVM) Infrastructure Solutions Engineer- VP

The z/VM Systems Programmer on the LinuxONE mainframe platform is responsible for installing, configuring, securing, and maintaining z/VM environments to ensure high availability, performance, and reliability for enterprise workloads. This role includes managing virtualization resources, automating system operations, troubleshooting complex incidents, and collaborating with infrastructure, security, and application teams to support scalable Linux-based services.

By Joining Citi, you will become part of a global organisation whose mission is to serve as a trusted partner to our clients by responsibly providing financial services that enable growth and economic progress.

Team/Role Overview

The team provides end-to-end engineering support for LinuxONE environments, combining core platform work on z/VM, Red Hat Enterprise Linux (RHEL), and integrated infrastructure services from IBM and Velocity vendors. The organization manages z/VM across more than 200 LPARs and supports over 8,000 hosted Linux instances, delivering secure, resilient, and high-performing enterprise operations.

What you’ll do

• Operate and optimize z/VM environments on LinuxONE by handling daily system health checks, capacity trends, performance tuning, and incident prevention.
• Manage lifecycle activities for z/VM, RHEL, and supporting IBM/Velocity software, including installs, upgrades, patching, and configuration hardening.
• Administer large-scale virtualization estates (200+ LPARs and 8,000+ Linux guests) with a focus on availability, stability, and efficient resource utilization.
• Troubleshoot complex platform, network, storage, and guest-level issues, then drive root-cause analysis and permanent fixes.
• Automate repetitive operational tasks using scripts and tooling to improve consistency, reduce risk, and increase delivery speed.
• Serve the core purpose of the role: ensure secure, resilient, and high-performing LinuxONE services that enable critical business applications.
• Partner day-to-day with global, regional, and local engineering, operations, security, and application teams to coordinate changes and resolve cross-team dependencies.
• Contribute to governance and continuous improvement through documentation, standards compliance, change management, and knowledge sharing with colleagues and clients.

What we’ll need from you

• 6-10 years of hands-on experience in infrastructure engineering or service delivery, with a strong record of improving operational processes, reliability, and service outcomes.
• Proven expertise in enterprise hosting platforms, ideally including z/VM and Linux (RHEL), with solid understanding of virtualization, performance, availability, and capacity management.
• Ability to design and implement meaningful operational metrics, analytics, benchmarking frameworks, and continuous-improvement practices.
• Strong understanding of how infrastructure services support business priorities, including awareness of market trends, vendor capabilities, and competitive solutions.
• Demonstrated success working across global teams (virtual and in-person), managing competing priorities, and delivering to tight deadlines in high-pressure environments.
• Experience in Financial Services or another large, complex, highly regulated enterprise environment is strongly preferred.
• Excellent written and verbal communication skills, with strong analytical and diagnostic problem-solving capabilities.
• Ability to translate complex technical concepts into clear, actionable language for non-technical stakeholders and senior management.

What we can offer you

This z/VM Systems Programmer position offers strong career growth by building deep expertise in enterprise virtualization, LinuxONE infrastructure, automation, and large-scale platform engineering across complex production environments. It also creates opportunities to expand into technical leadership, architecture, and cross-functional global collaboration with IBM and vendor technologies, positioning you for advanced roles in mission-critical infrastructure strategy and operations.

By joining Citi Solutions Center Poland, you will not only be part of a business casual workplace with a hybrid working model (currently up to 2 days working at home per week), but also (potentially, subject to final offer) receive a competitive base salary and enjoy a whole host of additional benefits which can include:

• Employer paid Defined Contribution Pension Plan contribution of 6% of employee’s pensionable earnings (PPE Program)
• Employer paid Private Medical Care Package for employees and Private Medical Care Packages for certain family members available at preferential rates
• Employer paid Life Insurance Program for employees and Life Insurance for certain family members available at preferential rates
• Employee Assistance Program financed by Employer
• Paid Parental Leave Program (maternity and paternity leave; statutory and 2 weeks additional paid paternity leave)
• Sport Card for employees subsidised via Social Benefits Fund and Sport Cards for certain family members available at preferential rates
• Additional benefits from Company’s Social Benefit Fund, in particular: Holidays Allowance, support for sport and cultural activities, team building events.
• Additional day off for volunteering
• Cafeteria/ flex benefit - a company benefits system which enables employees to select and purchase benefits offered by a provider and available for employees on the platform.
• Opportunity to receive an annual discretionary incentive award
• Special offers and discounts for employees
• Copy and paste the URL below into a new tab on your web browser to view the Remuneration Regulations extract: https://tbcdn.talentbrew.com/company/287/cms/v3/docs/policies/RemunerationRegulations-KeyProvisions-CitibankEurope_plc_05012025_A.pdf

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.

Sounds like Citi has everything you need? Then apply to discover the true extent of your capabilities.

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Job Family Group

Technology------------------------------------------------------

Job Family

Systems & Engineering------------------------------------------------------

Time Type

Full time------------------------------------------------------

Primary Location Full Time Salary Range

241 750,00 zł - 411 650,00 zł------------------------------------------------------

Most Relevant Skills

Please see the requirements listed above.------------------------------------------------------

Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.------------------------------------------------------

Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

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