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Added 1 min ago
EM
Senior Consultant/Manager - Data Engineer
Electric Mind
Toronto, ON
- Full-time
…via file exports and Kafka. You'll work alongside a senior engineer, writing transform code, fixing pipeline issues, and helping keep the environment healthy across…
Added 1 min ago
RE
EOS Principal Software Engineer
Rodan Energy Solutions Inc.
Mississauga, ON
- Full-time
Rodan Energy is seeking a technically versatile Senior Software Engineer to build and evolve industry-leading Energy Optimization Solutions (EOS) and help shape the future of software,…
Added 1 min ago
R&
Staff AI Builder
Robots & Pencils
Canada
- Full-time
…delivery of AI/ML systems. This role is ideal for an experienced engineer who thrives on architectural decisions, can confidently own systems end-to-end, and contributes to technical…
Added 16 mins ago
RA
Senior Azure Cloud Platform Engineer – Power BI & Informatica
Recrute Action
Toronto, ON
- Contract
…personalized approach. As part of the screening process, some applications may be reviewed using artificial intelligence tools. Only candidates who meet the hiring criteria will be…
Added 16 mins ago
Cybersecurity Analyst, Mining/Mineral Processing
Blue Moon Metals
Toronto, ON
…candidate will work closely with the Lead, IT Infrastructure Engineer and cross-functional stakeholders to implement security controls aligned to NIST CSF 2.0 and IEC 62443, and to support…
Added 16 mins ago
GP
Data Science Developer
Global Pharma Tek
ON · Ontario, Canada
- Contract
Job-Role/Title: Data Science /Data Engineer Developer
Added 17 mins ago
SS
Senior Automation Engineer- Agentic AI
Sapphire Stream Technology
Toronto, ON · Greater Toronto Area, Canada
- Full-time
SST is seeking an experienced Senior Agentic AI – Validation & Automation Engineer to join our engineering team in Markham, Ontario.
Added 17 mins ago
LD
Senior Electrical Hardware Engineer
Leonardo DRS
Halifax, NS
- Full-time
…reliability power conversion equipment for mission critical applications supporting all branches of the military in Canada, the US and many countries abroad. All products are designed and…
Added 31 mins ago
Senior Electrical Engineer Power Electronics
Leonardo DRS, Inc.
NS · Bedford, Nova
…reliability power conversion equipment for mission critical applications supporting all branches of the military in Canada, the US and many countries abroad. All products are designed and…
Added 31 mins ago
M
Systems Engineer, Missions
MDA
Richmond, BC
- Full-time
Experience or knowledge in satellites and their applications, including:
Added 31 mins ago
EA
Software Engineer III -Software Engineer III - Temporary Full Time
Electronic Arts
Vancouver, BC
- Full-time
Reporting to the Engineering Manager, we are seeking an experienced .NET Software Engineer with a strong DevOps background to join our Quality Verification and Standards (QVS) team. In this…
Added 31 mins ago
GD
Software Firmware Engineer - Bowman
General Dynamics Missions System International
Calgary, AB
- Full-time
Strong programming skills in C++, C# and C, with experience designing, developing, debugging and maintaining complex software applications.
Added 45 mins ago
Member of Technical Staff (Migrations)
Cockroach Labs
Toronto, ON
…trusted to power some of the world's most mission-critical applications. Now, as AI transforms how software is created and operated, the infrastructure behind it has to keep pace. Cockroach…
Added 45 mins ago
Quality Assurance Manager- AMO
Westerkirk
Calgary, AB
Previous experience as a Quality Assurance Manager in an Aviation Organization, or a valid AME (Aircraft Maintenance Engineer) License with a minimum of three years’ experience leading…
Added 45 mins ago
O
Senior Associate Geotechnical Engineer
Onterris
Guelph, ON · Oakville, ON · CAN-ON-Oakville-Upper Middle Rd
- Full-time
As the Senior Associate Geotechnical Engineer, you will be reporting to the Service Line VP.
Added 45 mins ago
GD
Software Firmware Engineer - Bowman
General Dynamics Mission Systems–Canada
Calgary, AB
- Full-time
Strong programming skills in C++, C# and C, with experience designing, developing, debugging and maintaining complex software applications.
Added 45 mins ago
GD
Software Firmware Engineer - Bowman
General Dynamics Mission Systems–Canada
Calgary, AB
- Full-time
Strong programming skills in C++, C# and C, with experience designing, developing, debugging and maintaining complex software applications.
Added 45 mins ago
AT
Mainframe Application Support Engineer
Aarorn Technologies Inc
Toronto, ON
- $50 CAD / hour
- Contract
We are seeking an experienced Mainframe Application Support Engineer to provide production support, incident management, and application maintenance for critical mainframe-based business…
Added 45 mins ago
QC
Quality Assurance Engineer
Quarry Consulting
Toronto, ON · Greater Toronto Area, Canada
- Full-time
Strong hands-on experience in functional and manual testing of enterprise applications, with the ability to independently own complex test areas.
Added 46 mins ago
C-
Technical Sales and Field Service Engineer
Captiveaire - Region 114 Western PA
Saskatoon, SK
- Full-time
Seeking a driven and motivated engineer to join our sales team focusing on growing business with existing customers and developing new business. This position will involve applications…
Added 46 mins ago
Y
SDET/Automation – Mobility (IOS Applications)
Yochana
Vancouver, BC
- Contract
Role: SDET/Automation – Mobility (IOS Applications)
Added 46 mins ago
P
Senior Software Engineer C# .NET
Prophix
Toronto, ON · Etobicoke, ON
- Full-time
As a Senior Software Engineer at Prophix, you'll play a central role in shaping the product that over 2,500 finance teams around the world rely on every day for budgeting, reporting, and…
Added 46 mins ago
C-
Technical Sales and Field Service Engineer
Captiveaire - Region 114 Western PA
Ottawa, ON
- Full-time
Seeking a driven and motivated engineer to join our sales team focusing on growing business with existing customers and developing new business. This position will involve applications…
Added 1 hour ago
SL
Digital Product Manager - CRM and Partnerships
Sun Life
Toronto, ON · Waterloo, ON · Sun Life Toronto One York
- Full-time
Added 1 hour ago
GT
Senior Full Stack Developer
GFT Technologies
Toronto, ON
- Contract
…customer-facing portals. The ideal candidate is a hands-on software engineer who enjoys building scalable APIs, designing robust backend services, and contributing across the full stack…

Aarorn Technologies Inc

Mainframe Application Support Engineer

Toronto, ON, Canada

$50 CAD / hour · Contract

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Job details

Pay: $50 CAD / hour
Job type: Contract
Apply by: May 4, 2027
Posting language: English
Posted: Nov 5, 2026

Original job description

Job Title: Mainframe Application Support Engineer

Location: Toronto, ON (4x onsite a week)

Employment Type: Contract

Pay Rate: CAD$50/HR INC

Interview Type: Face 2 Face (Onsite Interview Only)

Job Description

We are seeking an experienced Mainframe Application Support Engineer to provide production support, incident management, and application maintenance for critical mainframe-based business applications. The ideal candidate will have strong expertise in IBM Mainframe technologies involving IBM z/OS, COBOL, JCL, DB2, VSAM and CICS, troubleshooting production issues, ensuring application stability, and driving continuous service improvements.

The role requires close collaboration with development, infrastructure, business, and operations teams to support mission-critical applications while maintaining agreed service levels.

Key Responsibilities

Production Support & Incident Management

Provide L2/L3 support for mainframe applications in production environments.

Investigate, analyze, and resolve production incidents within SLA timelines.

Perform root cause analysis (RCA) and implement preventive measures.

Support critical business events, release deployments, and production changes.

Application Maintenance

Analyze application failures and identify corrective actions.

Coordinate with development teams for defect fixes and enhancements.

Validate fixes and support deployment activities.

Ensure application availability, reliability, and performance.

Disclaimer: AI tools may assist in the recruitment process; however, all hiring decisions are made by the recruitment team based on a comprehensive evaluation of candidates.

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More about this job

Responsibilities

Provide L2/L3 production support for critical mainframe applications, investigate and resolve incidents within SLA timelines, and perform root cause analysis with preventive follow-up. Maintain application availability and performance by coordinating defect fixes, validating changes, and supporting releases and critical business events.

Requirements

The role calls for an experienced mainframe application support professional with expertise in IBM z/OS, COBOL, JCL, DB2, VSAM, and CICS. Candidates should be able to troubleshoot production issues, manage incidents, maintain application stability, and collaborate with development, infrastructure, business, and operations teams.

Skills

IBM z/OS
COBOL
JCL
DB2
VSAM
CICS
Production Support
Incident Management
Troubleshooting
Root Cause Analysis
Application Maintenance
Release Deployment
Defect Resolution
Service Improvement
Performance Management

Visa sponsorship

Not detected in the job text

Keywords

Mainframe
IBM z/OS
COBOL
JCL
DB2
VSAM
CICS
Production Support
L2 Support
L3 Support
Incident Management
SLA
Root Cause Analysis
Application Maintenance
Troubleshooting
Preventive Measures
Release Deployment
Production Changes
Defect Fixes
Enhancements
Application Availability
Application Reliability
Performance
Service Improvement
Critical Business Applications
IT Services
IT Consulting

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