Jobs in Canada

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Added 6 days ago
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IT Quality Engineer - AVP
Citi
Mississauga, ON
- Full-time
This role focuses on post-trade processing, clearing systems, back-office product processors, accounting, and regulatory reporting platforms. The Senior QA Analyst will drive end-to-end…
Added 6 days ago
Co-op Java Developer - Winter 2027
Global Relay
Vancouver, BC
We believe great businesses thrive on diversity, inclusion, and the contributions of all employees. To that end, we recruit candidates from different backgrounds and foster a work…
Added 6 days ago
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Senior Java Software Engineer
Altis
Ottawa, ON
- $80 to $85 CAD / hour
- Contract
Build and integrate back-end services and APIs using Java, Python, and GraphQL.
Added 6 days ago
GR
Co-op Java Developer - Winter 2027
Global Relay
Vancouver, BC
- Full-time
We believe great businesses thrive on diversity, inclusion, and the contributions of all employees. To that end, we recruit candidates from different backgrounds and foster a work…
Added 6 days ago
M
Full Stack Engineer
Manulife
Toronto, ON · Waterloo, ON
- Full-time
Develop and maintain user interfaces, databases, APIs, server-side logic, and other front-end and back-end components.
Added 6 days ago
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Software Developer - Cloud Platform
Nakisa
Montreal, QC
- Full-time
Strong problem-solving skills, with the ability to debug both front-end and back-end issues.
Added 6 days ago
JG
Sr .Net developer
J&M Group
Montreal, QC
- Contract
Experience developing and supporting front-end, back-end, desktop, Windows-hosted, and cloud/container-hosted application components, including OpenShift environments.
Added 6 days ago
AC
Back-end Developer – Proactive Hiring
Air Canada
Toronto, ON · Dorval, QC
- Full-time
We’re seeking a creative and detail-oriented Back-end developer to play a critical role in ensuring our systems operate seamlessly behind the scenes by designing, building, and maintaining…
Added 6 days ago
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Staff Back End Engineer (Data Platform)
Forma.ai
Toronto, ON
- Full-time
Expertise in at least one production-grade backend language (e.g., Python, Java, Kotlin, Go, C#, etc.).
Added 6 days ago
Senior Java Developer
Localcoin
Canada
…technologies to join our growing Engineering team as our Senior Java Back End…
Added 6 days ago
AS
Full Stack Developer
AgileGrid Solutions
Canada
- Full-time
…web applications. In this role, you will work across front-end and back-end systems, using React.js, Material-UI, Node.js, and Java to deliver dependable, user-focused software. You will…
Added 6 days ago
AC
Development Lead (Back-end Systems)
Air Canada
Toronto, ON
- Full-time
Actively design, develop, modify, integrate, maintain, and troubleshoot applications and services across front-end, back-end, cloud, and DevOps; lead complex or high-risk implementations…
Added 7 days ago
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Senior Staff Software Developer
Intuit
Toronto, ON
- Full-time
This is a hybrid role with the expectation of working from our Toronto office 3 days per week
Added 7 days ago
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Senior AI Developer
UniSysTech Consulting
Toronto, ON · Greater Toronto and Hamilton Area, ON
- Other
Hybrid Model: Requirement to work 2 days per week in-office at our Downtown Toronto office, with up to 3 days remote flexibility.
Added 7 days ago
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Lead Full Stack Engineer
Manulife
Toronto, ON · Waterloo, ON
- Full-time
Back-end frameworks: Spring Boot, Spring Security, Spring Data JPA/Hibernate, and NestJS or Express.js.
Added 7 days ago
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Lead Full Stack Engineer
Manulife
Waterloo, ON
- Full-time
Back-end frameworks: Spring Boot, Spring Security, Spring Data JPA/Hibernate, and NestJS or Express.js.
Added 7 days ago
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Consultant, Java Back End Development
CIBC
Toronto, ON
- Full-time
You need to be legally eligible to work at the location(s) specified above and, where applicable, must have a valid work or study permit
Added 7 days ago
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Forward Deployed Engineer Intern (FDE)
GeoComply
Vancouver, BC
- Internship
Our forward deployed teams own a set of customers end to end. Engineers, solutions consultants, and technical support sit in the same pod, working the same accounts, with the people who use…
Added 7 days ago
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[VO2 Canada] - Développeuse.eur Java – Missions Ponctuelles
VO2 GROUP
Montreal, QC
- Full-time
Expérience : Vous développez des applications back-end en Java depuis au moins 4 ans, dont une bonne
Added 7 days ago
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Senior Backend SDET
TechDoQuest
Canada
- Full-time
Back-end asynchronous testing experience: Kafka.
Added 7 days ago
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Consultant, Application Development (Payments)
CIBC
Toronto, ON
- Full-time
You need to be legally eligible to work at the location(s) specified above and, where applicable, must have a valid work or study permit
Added 7 days ago
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Senior Full Stack Engineer
Manulife
Toronto, ON · Waterloo, ON
- Full-time
Design end-user interfaces, databases, APIs and server-side logic while maintaining front-end and back-end components.
Added 7 days ago
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Staff Software Engineer - II (KeyCite)
Thomson Reuters
Toronto, ON · Canada, Toronto, Ontario
- Full-time
Lead complex engineering initiatives, designing and delivering end-to-end solutions for large-scale, business-critical systems.
Added 7 days ago
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Senior Full Stack Developer (.Net Technology Stack)
BDO
Toronto, ON
- Full-time
Implement and integrate front-end, back-end, and database components, ensuring optimal performance and security.
Added 7 days ago
[VO2 Canada] - Développeuse.eur Angular– Missions Ponctuelles
VO2 Group
Montreal, QC
Développeuse Front-end Angular – Missions Ponctuelles & Défis Clients

J&M Group

Sr .Net developer

Montreal, QC, Canada

Contract

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Job details

Job type: Contract
Apply by: May 2, 2027
Posting language: English
Posted: Nov 3, 2026

Original job description

We are looking for a Senior .NET Developer with strong C#, .NET/.NET Core, REST/SOAP APIs, application support, and OpenShift experience.

What will you do?

Design, develop, implement, and maintain technical solutions supporting legacy and modern .NET applications hosted on Windows 10/11, Windows Server, and cloud/container platforms, including desktop application components.
Analyze existing applications and recommend opportunities for modernization, technical debt reduction, code optimization, and increased automation.
Troubleshoot application issues, perform root cause analysis, remediate vulnerabilities, and refactor legacy code to improve application stability and maintainability.
Develop and support integrations between applications using REST/SOAP APIs, HTTP-based services, XML, and other enterprise integration mechanisms.
Document application design, technical changes, configurations, troubleshooting procedures, and implementation updates.
Work cross-functionally with business partners, Agile squads, infrastructure teams, and Site Reliability Engineering (SRE) teams to prioritize and successfully deliver project and operational work.
Participate in code reviews, testing, deployment, production support, and continuous improvement activities.
Communicate and interact frequently with business and technology partners located across Canada and globally.

What do you need to succeed?

Must-have

Minimum 5+ years of hands-on software development experience using the Microsoft .NET technology stack, including development, implementation, maintenance, and support of enterprise applications.
Strong experience with C#, .NET / .NET Core, and Microsoft development technologies.
Experience developing and supporting front-end, back-end, desktop, Windows-hosted, and cloud/container-hosted application components, including OpenShift environments.
Strong understanding of object-oriented programming, application design principles, and enterprise software development practices.
Experience with security authentication and authorization mechanisms, including OAuth, Active Directory, application certificates, and related security technologies.
Strong experience with HTTP, SOAP, REST APIs, and web services supporting rich-client and cloud-based applications.
Understanding of XML structures and data layouts to facilitate data exchange and integration between platforms.
Hands-on experience in application troubleshooting, debugging, root cause analysis, vulnerability remediation, and refactoring of legacy code.
Experience working with source control, build/deployment processes, and CI/CD practices.
Ability to work effectively across Agile development teams, business stakeholders, SRE, and other technology teams.
Strong analytical, problem-solving, documentation, and communication skills.

Nice-to-have / Secondary Skills

Experience or working knowledge of Java and the Spring ecosystem is an asset.
Familiarity with Java, Spring Boot, Spring MVC, and Java-based REST APIs/microservices.
Experience troubleshooting, supporting, or making enhancements to Java/Spring Boot applications is preferred.
Familiarity with Java development tools and frameworks such as Maven/Gradle, JUnit, JPA/Hibernate, or equivalent technologies would be beneficial.
Experience working within an enterprise application landscape containing a combination of .NET and Java-based applications.
Exposure to microservices and containerized applications using OpenShift/Kubernetes would be an asset.
Experience within banking, financial services, or another large enterprise technology environment would be beneficial.

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More about this job

Responsibilities

Design, develop, maintain, and support legacy and modern .NET applications across Windows, cloud, and container platforms, including desktop components. Troubleshoot and modernize applications, support API integrations, document technical work, and collaborate with business, Agile, infrastructure, and SRE teams through delivery and production support.

Requirements

Requires at least five years of hands-on Microsoft .NET development experience, including strong C# and .NET/.NET Core skills, application support, APIs, and OpenShift or other cloud/container environments. Candidates should also have experience with authentication and authorization, XML, CI/CD, troubleshooting, and cross-functional collaboration; Java and Spring experience are assets.

Skills

C#
.NET
.NET Core
REST APIs
SOAP APIs
OpenShift
Application Support
Object-Oriented Programming
OAuth
Active Directory
XML
Application Troubleshooting
Root Cause Analysis
CI/CD
Agile
Java

Visa sponsorship

Not detected in the job text

Keywords

C#
.NET
.NET Core
REST APIs
SOAP APIs
HTTP
Web Services
OpenShift
Kubernetes
Windows Server
Windows 10/11
Desktop Applications
Cloud Applications
Containerized Applications
OAuth
Active Directory
Application Certificates
XML
Object-Oriented Programming
Application Modernization
Technical Debt Reduction
Vulnerability Remediation
Source Control
CI/CD
Agile
Site Reliability Engineering
Java
Spring Boot
Spring MVC
Microservices

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Work requirements

Jobs in Canada