About The Position

As a Senior Mainframe Application Support Engineer, you will support Fidelity's Participant Recordkeeping platform, a critical system for 401(k) and retirement recordkeeping operations. As part of the WI Mainframe Batch Support organization, you will help ensure the stability, availability, and reliability of business-critical applications processing high volumes of participant transactions and daily batch workloads. The role combines production support and application engineering, with approximately 70% focused on production support, incident troubleshooting, and batch processing operations, and 30% on application enhancements and development. You will investigate complex issues, resolve production incidents, improve system performance, and support platform enhancements. The WI Mainframe Batch Support team provides operational support for critical retirement recordkeeping systems and partners with engineering, product, and business stakeholders to ensure accurate and reliable processing. It is a collaborative global organization providing 24x7 support coverage. The U.S.-based team consists of five associates and focuses on platform stability, production issue resolution, daily batch operations, and enhancements to improve the reliability and performance of core recordkeeping applications. Fidelity will not provide immigration sponsorship for this position. Fidelity is transitioning to a full-time onsite working model through a phased rollout across regions and roles. Onsite expectations vary by role and location and may evolve as the rollout continues; the transition does not apply to fully remote roles. Fidelity’s business is subject to securities, investment, retirement, and other laws and regulations that may restrict hiring or association with individuals with certain criminal histories.

Requirements

  • 4–6 years of experience supporting, developing, or maintaining enterprise mainframe applications.
  • Hands-on experience with COBOL, JCL, and DB2.
  • Experience supporting production environments and troubleshooting complex application issues.
  • Strong analytical and problem-solving skills, including the ability to diagnose issues and identify root causes.
  • Experience supporting batch processing environments and high-volume transaction systems.
  • Ability to analyze application flows, job streams, and production failures within a mainframe environment.
  • Strong communication and collaboration skills to work effectively across technical and business teams.
  • Ability to manage multiple priorities in a fast-paced production support environment.

Responsibilities

  • Provide production and non-production support for applications supporting Fidelity's Participant Recordkeeping platform.
  • Monitor, analyze, and troubleshoot batch processing issues, application failures, and production incidents.
  • Perform root cause analysis and partner with technology and business teams to drive issues through resolution.
  • Support high-volume daily batch processing in a large-scale mainframe environment.
  • Develop, test, implement, and maintain application enhancements using COBOL and related mainframe technologies.
  • Analyze JCL, DB2, application code, and batch workflows to identify and resolve processing issues.
  • Participate in system maintenance, application upgrades, and continuous improvement initiatives.
  • Collaborate with distributed global support teams to ensure 24x7 operational coverage.
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