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Added 6 days ago
CL
Senior Group Insurance Underwriter
Canada Life
Toronto, ON
- Full-time
The Senior Group Insurance Underwriter is directly responsible for assessing the risk and making decisions associated with the sale, amendment and renewal of assigned cases. And, at times,…
Added 6 days ago
CL
Senior Group Insurance Underwriter
Canada Life
London, ON
- Full-time
The Senior Group Insurance Underwriter is directly responsible for assessing the risk and making decisions associated with the sale, amendment and renewal of assigned cases. And, at times,…
Added 6 days ago
CL
Senior Group Insurance Underwriter
Canada Life
Winnipeg, MB
- Full-time
The Senior Group Insurance Underwriter is directly responsible for assessing the risk and making decisions associated with the sale, amendment and renewal of assigned cases. And, at times,…
Added 6 days ago
TT
Senior Java / J2EE Developer
Tamanna Technology
Toronto, ON · Greater Toronto Area, Canada
- Contract
We are seeking an experienced and detail-oriented Java / J2EE Developer to join our development team. In this role, you will design, develop, and maintain high-performance enterprise…
Added 8 days ago
SM
RQ11685 – Software Developer – Back End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Back-End Software Developer with extensive experience in IBM mainframe technologies, PL/I programming, IMS databases, DB2 for z/OS, XML processing, and…
Added 8 days ago
SM
RQ11685 – Software Developer – Back End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Back-End Software Developer with extensive experience in IBM mainframe technologies, PL/I programming, IMS databases, DB2 for z/OS, XML processing, and…
Added 8 days ago
SM
RQ11685 – Software Developer – Back End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Back-End Software Developer with extensive experience in IBM mainframe technologies, PL/I programming, IMS databases, DB2 for z/OS, XML processing, and…
Added 8 days ago
SM
RQ11685 – Software Developer – Back End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Back-End Software Developer with extensive experience in IBM mainframe technologies, PL/I programming, IMS databases, DB2 for z/OS, XML processing, and…
Added 8 days ago
SM
RQ11685 – Software Developer – Back End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Back-End Software Developer with extensive experience in IBM mainframe technologies, PL/I programming, IMS databases, DB2 for z/OS, XML processing, and…
Added 8 days ago
SM
RQ11685 – Software Developer – Back End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Back-End Software Developer with extensive experience in IBM mainframe technologies, PL/I programming, IMS databases, DB2 for z/OS, XML processing, and…
Added 9 days ago
SM
RQ11685 – Software Developer – Back End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Back-End Software Developer with extensive experience in IBM mainframe technologies, PL/I programming, IMS databases, DB2 for z/OS, XML processing, and…
Added 9 days ago
SM
RQ11685 – Software Developer – Back End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Back-End Software Developer with extensive experience in IBM mainframe technologies, PL/I programming, IMS databases, DB2 for z/OS, XML processing, and…
Added 9 days ago
SM
RQ11685 – Software Developer – Back End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Back-End Software Developer with extensive experience in IBM mainframe technologies, PL/I programming, IMS databases, DB2 for z/OS, XML processing, and…
Added 9 days ago
SM
RQ11685 – Software Developer – Back End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Back-End Software Developer with extensive experience in IBM mainframe technologies, PL/I programming, IMS databases, DB2 for z/OS, XML processing, and…
Added 10 days ago
SM
RQ11685 – Software Developer – Back End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Back-End Software Developer with extensive experience in IBM mainframe technologies, PL/I programming, IMS databases, DB2 for z/OS, XML processing, and…
Added 10 days ago
Bilingual Manager, Cloud Infrastructure (Paas)
CMHC - SCHL
Ottawa, ON · Montreal, QC
Operating within an integrated infrastructure portfolio and reporting to the Senior Manager, IT Infrastructure, you will collaborate closely with leaders responsible for Infrastructure as a…
Added 10 days ago
SM
RQ11685 – Software Developer – Back End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Back-End Software Developer with extensive experience in IBM mainframe technologies, PL/I programming, IMS databases, DB2 for z/OS, XML processing, and…
Added 10 days ago
SM
RQ11685 – Software Developer – Back End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Back-End Software Developer with extensive experience in IBM mainframe technologies, PL/I programming, IMS databases, DB2 for z/OS, XML processing, and…
Added 11 days ago
SM
RQ11685 – Software Developer – Back End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Back-End Software Developer with extensive experience in IBM mainframe technologies, PL/I programming, IMS databases, DB2 for z/OS, XML processing, and…
Added 11 days ago
SM
RQ11685 – Software Developer – Back End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Back-End Software Developer with extensive experience in IBM mainframe technologies, PL/I programming, IMS databases, DB2 for z/OS, XML processing, and…
Added 11 days ago
S
Senior Business Analyst
SereneAid
St. John's, NL
- Full-time
The project involves transitioning legacy Motor Registration Division (MRD) and Ticket Management System (TMS) applications and business operations from mainframe technology to a unified…
Added 11 days ago
TI
Back End Developer - Mainframe
Teckhorizon Inc
Toronto, ON
- Contract
The client is seeking a Senior Software Developer Back End (Mainframe) to support the analysis, design, development, testing, and maintenance of mainframe applications within the Labour and…
Added 11 days ago
M
RQ11685 - Software Developer - Back End - Senior
Maarut
Toronto, ON
- Contract
Skill Set Requirements for Mainframe Developers:
Added 11 days ago
M
Ingénieur Support Mainframe / Mainframe Support Engineer
mthree
Montreal, QC
- Full-time
Nous recherchons un(e) Ingénieur(e) Support Mainframe pour rejoindre une équipe dynamique chez l'un de nos clients. Ce poste consiste à assurer le support des applications mainframe…
Added 11 days ago
UT
Business Analyst # 26-25798
US Tech Solutions
St. John's, NL · Greater St. John's Metropolitan Area
- $70 to $75 USD / hour
- Contract
We are seeking an experienced Senior Business Analyst to support a large-scale application modernization initiative within a public-sector environment. The role involves transitioning…

mthree

Ingénieur Support Mainframe / Mainframe Support Engineer

Montreal, QC, Canada

Full-time

Apply About employer

Applications open in a new tab.

Job details

Job type: Full-time
Apply by: Nov 13, 2026
Posting language: English · French
Posted: Oct 14, 2026

Original job description

English section of this bilingual listing.

Want to work in technology at an investment bank?

We are looking for someone to be a part of a dynamic team as a Mainframe Support Engineer for one of our clients to support critical production mainframe applications, maintain operational reliability, troubleshoot incidents, and minimize downtime across our client's technology environment.

About mthree:

Since 2010, mthree has been helping clients solve their business and technological challenges. We are a technology and business consultancy with a global workforce delivering significant business and IT projects in some of the largest financial services organizations worldwide.

Core Services

Consulting and Advisory
Managed Services
Alumni Graduate Program
Alumni Pro Program

We have a global presence and are experts in delivering exceptional quality to our client base, providing consulting services across Risk, Regulation & Compliance; Vendor Products; Application Support; Application Development; Cyber & Information Security; Data Science and DevOps areas.

Our Expert program offers experienced professionals access to top roles in tech, finance, aviation and insurance. Join us to work on groundbreaking technology projects, from international trading platforms to critical applications for leading airlines. We recruit professionals who are eager to fast-track their careers in technology or operations within prestigious global organizations.

Responsibilities:

Monitor and manage production technology through alerts, incident resolution, problem management and user escalations.
Troubleshoot issues across applications, software, hardware and networks.
Respond to production tickets, system alerts and job failures.
Lead incident calls with technology and infrastructure teams.
Collaborate with developers and end users to resolve production issues.
Provide real-time recovery/status updates to senior stakeholders.
Identify process improvements in code and data workflows.
Work within a global follow-the-sun support model across Asia, EMEA and North America.
Participate in an on-call rotation, including possible weekend coverage.

Skills Required:

Background in Computer Science equivalent to a B.Sc. Equivalent practical experience is a reasonable substitute.
3-5 years of production support or similar experience.
UNIX/Linux
Shell, Python, Perl or JavaScript
Relational databases such as DB2, SQL, Sybase or PostgreSQL
Mainframe technologies: COBOL, JCL, VSAM, DB2
Debugging and coding production COBOL/DB2 applications.
Incident management and application troubleshooting.
Strong communication and analytical/problem-solving skills.

At mthree, our values support courageous teammates, needle movers, and learning champions all while striving to support the health and well-being of all employees. We take great pride in celebrating the diversity of each individual who contributes to making mthree the company it is today and will be in the future. We value diversity both within mthree and with our partner companies, and we're proud to provide an environment where all our colleagues can flourish. That means promoting a strong culture of equality but, most importantly, inclusion.

Applicants must be currently authorized to work in Canada on a full-time basis. The Company will not sponsor applicants for work visas.

Read the full bilingual original

**English version below**

Doit être local à Montréal

Vous souhaitez travailler dans le domaine de la technologie au sein d'une banque d'investissement?

Nous recherchons un(e) Ingénieur(e) Support Mainframe pour rejoindre une équipe dynamique chez l'un de nos clients. Ce poste consiste à assurer le support des applications mainframe critiques en production, à garantir la fiabilité opérationnelle des systèmes, à diagnostiquer et résoudre les incidents, ainsi qu'à minimiser les temps d'interruption au sein de l'environnement technologique de notre client.

À propos de mtrois :

Depuis 2010, mtrois aide ses clients à résoudre leurs défis commerciaux et technologiques. Nous sommes une société de conseil en technologie et en affaires avec une main-d'œuvre mondiale qui réalise des projets commerciaux et informatiques significatifs dans certaines des plus grandes organisations de services financiers du monde.

Services principaux

Consulting et Conseil
Services gérés
Programme de diplômés Alumni
Programme Alumni Pro

Nous avons une présence mondiale et sommes experts dans la fourniture d'une qualité exceptionnelle à notre base de clients, offrant des services de conseil dans les domaines du risque, de la réglementation et de la conformité ; Produits des fournisseurs ; Support d'application ; Développement d'application ; Cyber et sécurité de l'information ; Science des données et DevOps.

Notre programme Expert offre aux professionnels expérimentés l'accès à des rôles de premier plan dans la technologie, la finance, l'aviation et l'assurance. Rejoignez-nous pour travailler sur des projets technologiques révolutionnaires, des plateformes de trading internationales aux applications critiques pour les principales compagnies aériennes. Nous recrutons des professionnels désireux de faire progresser rapidement leur carrière dans la technologie ou les opérations au sein d'organisations mondiales prestigieuses.

Responsabilités :

Surveiller et gérer les environnements de production technologiques à l'aide d'alertes, de la résolution d'incidents, de la gestion des problèmes et de l'escalade des demandes utilisateurs.
Diagnostiquer et résoudre les incidents liés aux applications, aux logiciels, au matériel informatique et aux réseaux.
Traiter les tickets de production, les alertes système et les échecs de traitements automatisés (jobs).
Animer et coordonner les cellules de crise (incident calls) avec les équipes technologiques et d'infrastructure.
Collaborer avec les développeurs et les utilisateurs finaux afin de résoudre les incidents de production.
Fournir aux parties prenantes et aux responsables seniors des mises à jour en temps réel sur l'état des systèmes et les actions de rétablissement.
Identifier des opportunités d'amélioration des processus dans les flux de données et les développements applicatifs.
Travailler dans un modèle de support mondial « Follow the Sun » couvrant l'Asie, la région EMEA (Europe, Moyen-Orient et Afrique) et l'Amérique du Nord.
Participer à une rotation d'astreinte, pouvant inclure une couverture le week-end.
Ce poste requiert actuellement une présence sur site d'au moins trois jours par semaine

Compétences requises

Formation en informatique de niveau Licence (Bac+3) ou équivalent. Une expérience pratique significative pourra être considérée en remplacement du diplôme.
3 à 5 ans d'expérience en support de production ou dans un poste similaire.
Bonne maîtrise des environnements UNIX/Linux.
Connaissances en scripting et développement : Shell, Python, Perl ou JavaScript.
Expérience des bases de données relationnelles telles que DB2, SQL, Sybase ou PostgreSQL.
Connaissance des technologies Mainframe : COBOL, JCL, VSAM et DB2.
Expérience du débogage, de la maintenance et du développement d'applications de production COBOL/DB2.
Solide expérience en gestion d'incidents et en diagnostic d'applications.
Excellentes compétences en communication, en analyse et en résolution de problèmes.

Chez mtrois, nos valeurs soutiennent des coéquipiers courageux, des moteurs d'aiguilles et des champions de l'apprentissage tout en s'efforçant de soutenir la santé et le bien-être de tous les employés. Nous sommes très fiers de célébrer la diversité de chaque individu qui contribue à faire de mtrois l'entreprise qu'elle est aujourd'hui et sera à l'avenir. Nous valorisons la diversité tant au sein de mtrois qu'avec nos entreprises partenaires, et nous sommes fiers de fournir un environnement où tous nos collègues peuvent s'épanouir. Cela signifie promouvoir une forte culture d'égalité mais, surtout, d'inclusion.

Les candidats doivent être actuellement autorisés à travailler au Canada à temps plein. L'entreprise ne parrainera pas les candidats pour des visas de travail

**English Translation**

**Must be local to Montreal**

Want to work in technology at an investment bank?

About mthree:

Core Services

Consulting and Advisory
Managed Services
Alumni Graduate Program
Alumni Pro Program

Responsibilities:

Monitor and manage production technology through alerts, incident resolution, problem management and user escalations.
Troubleshoot issues across applications, software, hardware and networks.
Respond to production tickets, system alerts and job failures.
Lead incident calls with technology and infrastructure teams.
Collaborate with developers and end users to resolve production issues.
Provide real-time recovery/status updates to senior stakeholders.
Identify process improvements in code and data workflows.
Work within a global follow-the-sun support model across Asia, EMEA and North America.
Participate in an on-call rotation, including possible weekend coverage.
Current posting specifies at least 3 days per week onsite.

Skills Required:

Background in Computer Science equivalent to a B.Sc. Equivalent practical experience is a reasonable substitute.
3-5 years of production support or similar experience.
UNIX/Linux
Shell, Python, Perl or JavaScript
Relational databases such as DB2, SQL, Sybase or PostgreSQL
Mainframe technologies: COBOL, JCL, VSAM, DB2
Debugging and coding production COBOL/DB2 applications.
Incident management and application troubleshooting.
Strong communication and analytical/problem-solving skills.

Applicants must be currently authorized to work in Canada on a full-time basis. The Company will not sponsor applicants for work visas.

Apply About employer

More about this job

Responsibilities

Monitor and support critical production mainframe applications by responding to alerts, tickets, job failures, and incidents, and troubleshoot issues across applications, software, hardware, and networks. Coordinate incident calls, communicate recovery updates to stakeholders, collaborate with developers and users, and identify process improvements while participating in global follow-the-sun and on-call support.

Requirements

Requires 3–5 years of production support experience and a computer science bachelor's degree or equivalent practical experience. Candidates should have UNIX/Linux and scripting skills, relational database and mainframe experience including COBOL/DB2, and strong incident management, troubleshooting, communication, and analytical skills.

Skills

UNIX/Linux
Shell Scripting
Python
Perl
JavaScript
Relational Databases
DB2
SQL
Sybase
PostgreSQL
COBOL
JCL
VSAM
Production Support
Incident Management
Application Troubleshooting

Visa sponsorship

Not detected in the job text

Keywords

Mainframe Support
Production Support
Incident Management
Problem Management
Application Troubleshooting
UNIX/Linux
Shell Scripting
Python
Perl
JavaScript
Relational Databases
DB2
SQL
Sybase
PostgreSQL
COBOL
JCL
VSAM
Job Scheduling
Production Applications
System Monitoring
Hardware Troubleshooting
Network Troubleshooting
On-Call Support
Follow-the-Sun Support
Investment Banking
Financial Services

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