Staff Systems Engineer, z/OS & Network

Company Description

Visa is a world leader in payments and technology, with over 259 billion payments transactions flowing safely between consumers, merchants, financial institutions, and government entities in more than 200 countries and territories each year. Our mission is to connect the world through the most innovative, convenient, reliable, and secure payments network, enabling individuals, businesses, and economies to thrive while driven by a common purpose – to uplift everyone, everywhere by being the best way to pay and be paid.

Make an impact with a purpose-driven industry leader. Join us today and experience Life at Visa.

Job Description

We are seeking a talented Staff Systems Engineer to join our z-OS Core Systems Engineering team with a focus on z-OS Network and specialization in z-OS systems engineering. This is an individual contributor role responsible for identifying and resolving issues of high complexity and delivering system solutions to support Visa’s global infrastructure. The ideal candidate will have strong z-OS Network systems engineering skills, experience with z-OS is highly preferred.                                                               

Responsibilities

Install, maintain, and upgrade z-OS Network components and subsystems.

Configure, install, and support z-OS operating environments, including implementing and maintaining network resources and related subsystems.

Provide 24x7 production support for Visa operations, including second-level z-OS Network and z-OS system support, with on-call rotational coverage for geographically dispersed data centers.

Apply working knowledge of SMP-E for software installation and maintenance.

Utilize and maintain z-OS Network tools and subsystems, with a basic understanding of major z-OS subsystems (such as JES2, RACF, VTAM, and TCP-IP).

Perform system and application monitoring and proactively address operational issues.

Troubleshoot and resolve complex system problems for both z-OS Network and z-OS environments.

Manage workload independently, escalating as necessary to senior engineers and management.

Collaborate with other support, development, and user groups to manage infrastructure requirements from design through implementation.

Work with vendors on software upgrades, maintenance, and support for both z-OS Network and z-OS platforms.

Document processes and changes using tools such as Microsoft Project, Excel, and PowerPoint.

Assist application teams with problem determination and requests for new functionality on both z-OS Network and z-OS.

Support user requirements for software functionality and features.

Maintain knowledge of ISV software tools and related mainframe utilities.

This is a hybrid position. Expectation of days in office will be confirmed by your hiring manager.

Visa will accept applications for this role until at least November 7, 2025.

Qualifications

Basic Qualifications
-5+ years of relevant work experience with a Bachelor’s Degree or at least 2 years of work experience with an Advanced degree (e.g. Masters, MBA, JD, MD) or 0 years of work experience with a PhD, OR 8+ years of relevant work experience.

Preferred Qualifications
-6 or more years of work experience with a Bachelors Degree or 4 or more years of relevant experience with an Advanced Degree (e.g. Masters, MBA, JD, MD) or up to 3 years of relevant experience with a PhD
-Experience with installation, configuration, and maintenance of z-OS Network software and subsystems.
-Strong problem determination and troubleshooting skills in z-OS Network environments.
-Working knowledge of z-OS operating systems and experience managing network resources (highly preferred).
-Experience with SMP-E and ISV software installation and support.
-Basic understanding of z-OS security, including RACF, networking, and storage management.
-Ability to work with all levels of management and users with varying levels of technical knowledge.
-Excellent verbal and written communication skills.
-Willingness to participate in on-call rotation and provide off-hours support as needed.
Preferred Skills
-Hands-on experience with z-OS installation, maintenance, and administration.
-Experience with z-OS systems programming, directory management, and user provisioning.
-Familiarity with IBM mainframe server hardware, I-O configuration, and HMC operations.
-Experience supporting mixed z-OS Network and z-OS environments.

Note: Both z-OS Network and z-OS systems engineering skills are highly desirable for this position, however, at a minimum, strong z-OS systems engineering experience is required. Candidates with expertise in both are preferred.

Additional Information

Work Hours: Varies upon the needs of the department.