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Added 1 month ago
FR
Senior Service Reliability Engineer
Fitch Ratings
Toronto, ON
- Full-time
Fitch Group is currently seeking a Senior Service Reliability Engineer to embed with Fitch Ratings development squads in Toronto and to partner with developers across Chicago, London,…
Added 1 month ago
AI
AI Platform Engineering Lead
AGF Investments
Toronto, ON
- Full-time
The AI Platform Engineering Lead is the senior technical authority for how AI is built at AGF. Reporting to the VP, Technology Services, the role defines the blueprints that AI solutions…
Added 1 month ago
C
Lead Mobile Application Engineer (.NET MAUI / Xamarin)
Clario
Canada
- Full-time
Clario, part of Thermo Fisher Scientific is seeking a Lead Mobile Application Engineer (.NET MAUI / Xamarin) to provide technical leadership in the design, development, and evolution of the…
Added 1 month ago
Senior Service Reliability Engineer
Fitch Group
Toronto, ON
Fitch Group is currently seeking a Senior Service Reliability Engineer to embed with Fitch Ratings development squads in Toronto and to partner with developers across Chicago, London,…
Added 1 month ago
B
Lead Android Engineer
Bankjoy
Remote, Canada
- Full-time
- Remote
As Android Tech Lead at Bankjoy, you will own the technical direction, architecture, and delivery of our Android banking platform while leading a team of three Android engineers embedded…
Added 1 month ago
C
Staff Software Engineer - Tools & Infrastructure / DevOps
Cerebras
Toronto, ON
- Full-time
Identify systemic bottlenecks across developer workflows and lead architectural improvements to developer infrastructure.
Added 1 month ago
KM
Senior Data Engineer – Ingénieur des données
KPI Mining Solutions
Montréal-Ouest, QC
- Full-time
Provide consulting services to our customers as the KPI Digital Lead Data Engineer
Added 1 month ago
KM
AI Engineer/Ingénieur(e) en intelligence artificielle
KPI Mining Solutions
Montréal-Ouest, QC
- Full-time
We are seeking an AI Engineer with deep technical expertise and a passion for cutting-edge innovation in artificial intelligence and machine learning. As part of our AI & Advanced Analytics…
Added 1 month ago
Staff Cloud Platform Engineer
Scotiabank
Toronto, ON
The Staff Platform Cloud Engineer role will be responsible for the building, tuning, managing infrastructure, monitoring and troubleshooting on Enterprise Security Google Kubernetes Engine…
Added 1 month ago
AM
AI Platform Engineering Lead
AGF Management
Toronto, ON
- Full-time
The AI Platform Engineering Lead is the senior technical authority for how AI is built at AGF. Reporting to the VP, Technology Services, the role defines the blueprints that AI solutions…
Added 1 month ago
T
Senior Software Development Engineer in Test
Trackforce
Montreal, QC
- Full-time
Trackforce is seeking an experienced and driven Senior Software Development Engineer in Test (Sr. SDET) to join our Engineering team. In this senior individual contributor role, you will be…
Added 1 month ago
Staff DevOps Developer
Visier Solutions Inc
Vancouver, BC
…organizations across the globe. Our mission is to help businesses lead with insight at scale as they continuously…
Added 1 month ago
C
Java Playwright Automation Engineer (Retirement/Pension Domain)
Cognizant
Toronto, ON
- $80,000 to $110,000 CAD / year
- Full-time
We are seeking a Java Playwright Automation Engineer with strong experience in Group Retirement and Wealth Management platforms. In this role, you will build and own the automated…
Added 1 month ago
ST
Senior Systems Engineer I
STEMCELL Technologies
Burnaby, BC · Canada - BC, Burnaby, Production Court, Onsite
- Full-time
We’re looking for a Senior Systems Engineer to lead the design, implementation, operation, and continuous improvement of business-critical systems and infrastructure that enable STEMCELL’s…
Added 1 month ago
I
Lead Java Developer
INFOYA
Toronto, ON
- $110,000 to $115,000 CAD / year
- Full-time
Developer, Technical Lead, or senior engineer with ownership of design
Added 1 month ago
T
Software Engineer (Application Platform/Tech Lead)
TrustFlight
Vancouver, BC
- Full-time
As a Software Engineer – Application Platform, you’ll help build secure, scalable platform foundations, especially around identity, authentication, and core system design. Beyond your…
Added 1 month ago
EI
Principal Engineer
Enercare Inc.
Markham, ON
- Full-time
…building things that make a difference? As a Principal Software Engineer, you’ll be a key player in creating technology that transforms how our customers experience their homes. This role…
Added 1 month ago
VS
Senior Site Reliability Developer
Vena Solutions
Remote, Canada
- Full-time
- Remote
You will own and lead projects as part of the STO team’s delivery strategy.
Added 1 month ago
Principal Engineer
Enercare
Markham, ON
…building things that make a difference? As a Principal Software Engineer, you’ll be a key player in creating technology that transforms how our customers experience their homes. This role…
Added 1 month ago
Senior Cloud Platform Engineer, DevOps
ProCogia
Vancouver, BC
ProCogia is looking for a Senior Cloud Platform Engineer with strong hands-on DevOps and cloud engineering experience who can design, build, operate, and improve modern enterprise…
Added 1 month ago
P
Senior Cloud Platform Engineer, DevOps
ProCogia
Vancouver, BC
- Full-time
ProCogia is looking for a Senior Cloud Platform Engineer with strong hands-on DevOps and cloud engineering experience who can design, build, operate, and improve modern enterprise…
Added 1 month ago
L
Senior Manager - Program & Project Management
LTM
ON · Ontario, Canada
- $81,215 to $133,000 USD / year
- Full-time
We are seeking a strategic and execution focused Senior Technical Program Manager to lead our AIML initiatives You will act as the operational backbone of our Artificial Intelligence…
Added 1 month ago
ST
Senior Systems Engineer I
STEMCELL Technologies
Burnaby, BC
- Full-time
We’re looking for a Senior Systems Engineer to lead the design, implementation, operation, and continuous improvement of business-critical systems and infrastructure that enable STEMCELL’s…
Added 1 month ago
M
Ingénieur Support Mainframe / Mainframe Support Engineer
mthree
Montreal, QC
- Full-time
…Cyber et sécurité de l'information ; Science des données et…
Added 1 month ago
Ingénieur Support Mainframe / Mainframe Support Engineer
mthree
Montreal, QC
…Cyber et sécurité de l'information ; Science des données et…

mthree

Ingénieur Support Mainframe / Mainframe Support Engineer

Montreal, QC, Canada

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Job details

Posting language: English · French
Posted: Sep 22, 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 manage critical production mainframe applications while troubleshooting incidents and coordinating with infrastructure teams. Provide real-time status updates to stakeholders and identify opportunities for process improvements in data and application workflows.

Requirements

Requires a bachelor degree in computer science or equivalent practical experience with 3-5 years in production support. Candidates must possess strong knowledge of mainframe technologies, UNIX/Linux environments, and scripting languages.

Skills

Mainframe
COBOL
JCL
VSAM
DB2
UNIX
Linux
Shell
Python
Perl
JavaScript
SQL
Sybase
PostgreSQL
Incident management
Production support

Benefits

Health and well-being support
Professional development opportunities

Visa sponsorship

Not detected in the job text

Keywords

Mainframe
Production support
COBOL
JCL
VSAM
DB2
UNIX
Linux
Shell
Python
Perl
JavaScript
SQL
Sybase
PostgreSQL
Incident management
Troubleshooting
Investment banking
Follow-the-sun
Application support
Data workflows
System alerts
Infrastructure
Debugging
Maintenance

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