Senior Mainframe Operator
JPMorganChase
Buenos Aires, Argentina
Posted on Mar 14, 2026
As a Senior Systems Operations in our Mainframe Compute Site Reliability and Engineering (SRE) team, we look first and foremost for people who are passionate to solving business problems through innovation and modern engineering practices. You'll be required to apply your depth of knowledge and expertise to all aspects of Infrastructure Support and Software Development Lifecycle, as well as partner continuously with your many stakeholders daily to stay focused on common goals. We embrace a culture of experimentation and constantly strive for improvement and learning. You’ll work in a collaborative, trusting, thought-provoking environment - one that encourages diversity of thought and creative solutions that are in the best interests of our customers, globally.
This role requires a wide variety of strengths and capabilities, including:
- Bachelor’s degree or equivalent experience
- 5-7 years’ experience in operating and managing the operations of IBM z-Series environments
- Demonstrated leadership of Operational and SRE Teams in a 24X7 support environment including all aspects of people management
- Understanding of infrastructure architecture including servers, storage, network, database, and application components.
- Extensive knowledge in administering, troubleshooting Mainframe related components.
- Extensive knowledge “Replication” technologies’ such as IBM CSM and GDPS
- Expertise in administering z-Series and Hardware Management Console (HMC) including Firmware/Microcode upgrades.
- Demonstrated understanding of security standards including a working knowledge of SSH protocol.
- Demonstrated working knowledge of transaction-based systems, IMS, CICS, DB2 and WebSphere
- Experience in managing external Vendors such as IBM to coordinate Hardware Replacements and to troubleshoot hardware and software issues.
- Experience in managing ServiceNow including workflow/ticket/resolution management across a global environment 24X7.
- Demonstrated expertise in Incident/Problem/Change management process and procedures.
- Able to troubleshoot priority incidents, facilitate blameless post-mortems and ensure permanent closure of incidents.
- Ability to host/participate in bridge calls and communicate effectively to large group of individuals at all levels.
- Knowledge of industry-wide technology trends, automation tools and best practices
- Ability to work in large, collaborative teams to achieve organizational goals.
- Demonstrate ability to work independently with strong ownership & communication skills.
- Knowledge in Site Reliability Engineering - Design, code, test and deliver software to automate manual operational work.
- Knowledge of multiple Batch Scheduling tools, notably CA-7, Control-M and Zeke. Exhibit a good working knowledge of JCL (Job Control Language)
- Passionate about building an innovative culture.
- Excellent debugging and troubleshooting skills.
- Conversant with Netcool support in a large-scale environment.
- Demonstrated ability to engage with IBM z-Series Engineering L3/L4/Build Teams on Architecture, Development, Stability & Continuous Improvement of Environment to advance the product’s vision and strategy to satisfy customer needs.
Please submit your resume in English
J.P. Morgan is a global leader in financial services, providing strategic advice and products to the world’s most prominent corporations, governments, wealthy individuals and institutional investors. Our first-class business in a first-class way approach to serving clients drives everything we do. We strive to build trusted, long-term partnerships to help our clients achieve their business objectives.
We recognize that our people are our strength and the diverse talents they bring to our global workforce are directly linked to our success. We are an equal opportunity employer and place a high value on diversity and inclusion at our company. We do not discriminate on the basis of any protected attribute, including race, religion, color, national origin, gender, sexual orientation, gender identity, gender expression, age, marital or veteran status, pregnancy or disability, or any other basis protected under applicable law. We also make reasonable accommodations for applicants’ and employees’ religious practices and beliefs, as well as mental health or physical disability needs. Visit our FAQs for more information about requesting an accommodation.
Our professionals in our Corporate Functions cover a diverse range of areas from finance and risk to human resources and marketing. Our corporate teams are an essential part of our company, ensuring that we’re setting our businesses, clients, customers and employees up for success.
Ensure operational excellence in a large-scale technology environment to enable successful business outcomes.