Mainframe Data Masking Specialist

Toronto, ON
Hybrid
Posted Oct 17, 2026
1 position

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Employment type: Contract
Experience level: Senior · 5+ years
Minimum education: Bachelor’s degree
Posting language: English
Working hours: 40 hours per week
Office presence: 2 days per week
Seniority: Mid-Senior level
Application method: Direct apply is available

Job summary

Analyze, transform, and mask sensitive data in mainframe environments while preserving data integrity and application functionality. Support data privacy and masking initiatives using z/OS, COBOL, JCL, DB2, VSAM datasets, and mainframe utilities.

Job details

Mainframe Data Masking Specialist* Toronto, ON Hybrid (2 days per week in-person at Toronto office preferred) Skills: Compliance : Data Privacy~Mainframe DB2 - Application Development~Data Architecture and Modeling Experience Required: 8-10 Role Descriptions: Detailed Job Description: We are looking for an experienced Mainframe Data Masking Specialist to support data privacy and masking initiatives within Mainframe environments. The candidate will work extensively with z/OS, COBOL, JCL, DB2, VSAM datasets, and Mainframe utilities to analyze, transform, and mask sensitive information while preserving data integrity and application functionality. The ideal candidate should have strong expertise in Mainframe file structures, COBOL copybooks, record layouts, EBCDIC data formats, batch processing, and automation utilities. Experience with data masking projects is an added advantage. Top 3 Required Skills: 1. Strong Mainframe experience with z/OS, COBOL, JCL, and DB2. 2. Hands-on experience with Mainframe datasets, VSAM, file formats, COBOL copybooks, and record layouts. 3. Strong troubleshooting experience with batch jobs, JCL execution, and Mainframe data processing. Top 3 Preferred Skills: 1. Experience with REXX, DFSORT, ICETOOL, or similar Mainframe automation utilities. 2. Knowledge of EBCDIC, fixed/variable length records, and COMP-3 data structures. 3. Experience supporting data masking, data privacy, or data transformation initiatives. Education Requirements: Bachelor's degree in Computer Science, Information Technology, Engineering, or equivalent experience. Thanks & regards, Lakshmi Bhavani , Apptoza Inc. Phone: 678-392-3978 Ext 4640 Phone: 437-291-3224 Ext 1105 Mail id : Lakshmi.bhavani@apptoza.com

What you’ll do

Requirements

Requires 8–10 years of experience and strong expertise in z/OS, COBOL, JCL, DB2, mainframe datasets, VSAM, file formats, copybooks, and record layouts. A bachelor's degree in Computer Science, Information Technology, Engineering, or equivalent experience is required; experience with mainframe automation utilities and data masking or privacy initiatives is preferred.