Senior Mainframe z/OS Engineer- New Jersey- Hybrid(Initially Remote )

Job Title: Principal Mainframe z/OS Engineer - Lead / Architect / Principal level

Job Type: Contract

Duration: Long Term

Exp: 18+ years

Location: New Jersey

Industry: Capital Markets, Asset Servicing, Investment Management

Handled:

o   Production issues
o   Batch failures
o   Data discrepancies
o   Financial accuracy

Role Overview

This role is for Principal-level Mainframe z/OS Engineer to take end-to-end ownership of critical trading, valuation, and fund accounting platforms. These systems directly support portfolio valuation, financial reporting, and regulatory obligations where accuracy and reliability are non-negotiable.

This role involves designing and managing core financial processing logic across:

• End-to-end trade lifecycle (capture through settlement)
• Fund accounting and investment book of record
• Daily/monthly NAV computation and financial close
• Audit replay, historical restatement, and regulatory correction workflows

The ideal candidate brings deep domain expertise in capital markets, strong batch engineering capabilities, and a track record of delivering highly accurate, high-volume financial systems under strict regulatory oversight.

Required Skills & Experience

• 18+ years of hands-on mainframe application development
• Advanced expertise in:
• Enterprise COBOL (high-precision financial calculations, packed decimal handling)
• DB2 for z/OS (complex SQL tuning, performance engineering)
• CICS TS and/or IMS TM transaction processing
• JCL, PROCs, and enterprise batch processing frameworks
• Strong experience across:
• Trading and post-trade processing systems
• Investment accounting and fund administration platforms
• NAV calculation and valuation engines
• Demonstrated ownership of production-critical financial applications
• Expertise in:
• Accounting close cycles and NAV processing
• Reconciliation workflows and break resolution
• Corporate actions lifecycle management
• Multi-currency valuation and FX rate application
• Experience with scheduling and deployment tools:
• Control-M, CA-7, or Tivoli Workload Scheduler
• Endevor, Changeman (or similar SCM tools)
• Hands-on exposure to:
• Audit replay and historical data restatement frameworks
• Large-scale asset manager or custodian environments

Key Responsibilities

• Lead the architecture and development of Enterprise COBOL applications supporting:
• Trade capture, settlement, and lifecycle processing
• Position, holdings, and cash accounting systems
• Daily, monthly, and ad-hoc NAV calculations
• Take full ownership of financial accuracy and data integrity across systems
• Design and implement restartable, checkpoint-driven batch frameworks for financial close processes, including:
• Multi-currency valuation and FX conversions
• Income accruals, amortization, and distribution calculations
• Corporate actions such as dividends, splits, and mergers
• Build systems capable of reprocessing historical data for audit, reconciliation, and regulatory corrections
• Troubleshoot and resolve NAV breaks and accounting discrepancies within strict reporting deadlines
• Design and optimize DB2 data models for:
• High-volume trade, position, and pricing datasets
• Historical valuation and reporting data
• Perform advanced performance engineering:
• EXPLAIN plan analysis
• Access path tuning
• Index strategy optimization
• Address production challenges including locking issues, batch overruns, and data skew
• Develop scalable batch processing solutions with parallel execution capabilities for EOD/EOM cycles
• Optimize COBOL programs for performance, focusing on CPU utilization, I/O efficiency, and consistent processing windows
• Build and maintain integration layers using IBM MQ for:
• Trade and pricing feeds
• Market data ingestion
• Downstream accounting and reporting systems
• Deliver data feeds for risk management systems and regulatory reporting platforms
• Support API enablement initiatives via z/OS Connect EE
• Act as the technical owner for high-impact financial components and lead root-cause investigations for:
• Financial inconsistencies
• Reconciliation breaks
• Batch and online processing failures

Support SOX, SEC, and internal audits by ensuring complete traceability and replay capability of financial processing logic