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Mainframe Developer

Square Hiring

 

North Quincy, Quincy, MA, USA

Posted On: 2 days ago
Experience: 5+ years
Availability: Onsite
Openings: 1
Category: Mainframe Developer
Tenure: Contract - Corp-to-Corp
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Description

Own end-to-end mainframe application development, delivery, and project coordination for financial services initiatives.

This role is on-site.

Responsibilities

  • Plan and deliver projects from requirements through design, testing, cutover, and hypercare.
  • Develop and optimize mainframe applications using PL/I, COBOL, DB2, JCL, and SQL.
  • Coordinate UAT and production readiness while ensuring stable post-go-live performance.
  • Manage RAID logs, budget planning, and monthly status reporting via Clarity.
  • Align deliverables with risk, compliance, and audit standards.

Required Skills

  • Strong knowledge of PL/I, COBOL, DB2, JCL, and SQL.
  • Experience with RTC/IDZ tools, JIRA, and online CICS/MQ.
  • Proficiency in SPUFI, FILE-AID, and batch processing support tools.
  • Excellent debugging and optimization skills for mainframe environments.
  • IT project management experience, preferably in Financial Services or Custody.
  • Experience with SDLC (Agile/Hybrid/Waterfall) and Jira/Confluence.
  • Bachelor's degree in Computer Science or related field.
  • 5+ years of relevant experience.

Preferred Skills

  • Knowledge of custody operations: corporate actions, income processing, settlements (DTC/Euroclear/Clearstream), and SWIFT messaging.
  • Experience with cash management and end-of-day processes.
  • Strong analytical, problem-solving, and communication skills.

Education

Bachelor's degree

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