Full-Time Principal Application Support Engineer (IBM z/OS)

As a Principal Application Support Engineer (IBM z/OS Platform) at ATPCO, you will be responsible for the implementation, enhancement, and maintenance of a wide range of ATPCO applications and services. You will collaborate with cross-functional teams to design and develop software solutions that align with business objectives, ensuring high performance, scalability, and reliability. You'll also play a critical role in improving existing applications, integrating new features, and maintaining system functionality to meet evolving business needs.

• Provide 24x7 Tier 2 support for all ATPCO applications and systems during both day and night oncall rotations, including weekends and holidays
• Serve as the technical lead for diagnosing and resolving critical production incidents in mainframe and distributed applications.
• Proactively resolve complex technical issues, managing multiple tasks while ensuring timely and quality results.
• Act as a technical mentor and resource for engineering teams, providing guidance on best practices and fostering team collaboration.
• Stay current with emerging technologies, driving continuous improvements in development processes and application delivery.
• Collaborate cross-functionally to meet business objectives, ensuring smooth communication between teams and stakeholders
• Share knowledge with peers and the wider organization, contributing to a culture of continuous learning and improvement.
• Develop proactive monitoring, alerting, and self-healing capabilities for applications and APIs.
• Analyze operational trends, volume surges and application logs to anticipate issues before they impact customers.
• Manage Severity 1 and 2 incidents and outages—from initial troubleshooting, vendor engagement, and outage communication to escalation and bridge management—ensuring effective internal and external communication and customer satisfaction.
• Provide support during business hours for non-production environments.
• Perform application and database maintenance activities such as MPM data uploads, historical data migrations, back-door data fixes, and addressing customer subscription data processing issues.
• Maintain and update COBOL programs and JCL.
• Maintain a deep understanding of the ATPCO enterprise environment to quickly diagnose and resolve issues, while staying informed about changes to ATPCO applications and technologies
• Collaborate with PSS Tier 1 to maintain and optimize Control-M/EM batch processing jobs.
• Monitor systems such as ServiceNow, Splunk On-Call, application alerts, and group emails, and respond to issues in a timely manner.
• Monitor scheduled Applications performance metrics and prepare ad hoc reports for IT management using DB2 SQL and other tools as needed.

Technical Skills Requirements: IBM DB2 skills (SQL queries, stored procedures, performance tuning), Redis, Neo4J, MySQL, MongoDB, IBM Job Control Language (JCL), Shell scripting, COBOL, CICS, J2EE, Java batch, Control-M/EM Enterprise Scheduler, Linux, z/OS (TSO/ISPF), VMware, MQ Series, WebSphere, J2EE Applications structure familiarity, ServiceNow, Monitoring Tools: (Grafana, Splunk, Dynatrace, site24x7, SolarWinds, AWS CloudWatch), XML, JDBC, experience in parsing Linux logs, $AVRS, BMC MainView, Professional Skills and experience: Minimum of 8+ years of IBM mainframe and distributed web/cloud-based application support experience in a 24x7 environment

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