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Added 4 days ago
BS
Senior Java Developer (FinTech & Payment Technologies)
Brainhunter Systems Ltd
ON · Ontario, Canada
- Contract
Job Role/Title: Senior Java Developer (Banking Applications Development)
Added 4 days ago
S
Java/ React Developer
Synechron
Calgary, AB
- Full-time
We are looking for a Java developer to join our team and help deliver key initiatives. The candidate should be a solid Java programmer, with strong design and implementation fundamentals.…
Added 4 days ago
MC
Senior QA Engineer III – Automation | Banking | API | Kafka | ETL (35729)
Myticas Consulting
Ottawa, ON
- Full-time
Automate API workflows, backend validations, and data-processing scenarios using Java or Python.
Added 4 days ago
BP
Senior Java Developer
BNP Paribas
Montreal, QC
- Full-time
Prime Services Technology is seeking a Senior Java Engineer in Montreal to design and deliver reliable, scalable distributed systems. This is a hands-on senior individual contributor role…
Added 4 days ago
C
Java/Spring Boot Developer - Vice President
Citi
Mississauga, ON
- Full-time
Join the Equities Middle Office Technology team as a Senior Java/Spring Boot Developer, where you will be a key contributor for managing complex BAU deliverables while driving strategic…
Added 4 days ago
TI
Full Stack Engineer
Tekgence Inc
Montreal, QC
- Contract
We are seeking an experienced Java Full Stack Developer with strong expertise in Java, Spring Boot, and Angular to develop, maintain, and troubleshoot scalable enterprise applications.
Added 4 days ago
ST
Multiple Automation Tester Role
Silverlink Technologies
Brampton, ON
- Contract
2. Automation Developer (Python & Cross-Platform SDET)
Added 4 days ago
JA
Murex Consultant
Jay Analytix
Remote, Canada
- Full-time
- Remote
We are looking for a Senior Java & Murex Developer who has worked hands-on inside the Murex platform (MX.3), not only on systems that feed trades into it. You will build and support Murex…
Added 4 days ago
B
Data Platform Engineer
BRP
Montreal, QC
- Full-time
Added 4 days ago
SS
Senior Java Software Engineer
Soho Square Solutions
Toronto, ON
- Contract
Hands-on Senior Full Stack Developer responsible for contributing to the design, development, testing, and maintenance of scalable backend services and REST APIs using Java and Spring Boot;
Added 4 days ago
H
Software Applications Engineer 4
HP
Vancouver, BC · Mississauga, ON
- Full-time
Added 4 days ago
MP
IT Director, Application Development & Support
Michael Page
Markham, ON
- $140,000 to $180,000 CAD / year
- Full-time
Experience with React, Next.js, Java, Spring Boot, REST APIs, Microservices, and BFF architecture.
Added 4 days ago
Senior Application Developer (Computer Services Officer 4)
The Government of Nova Scotia
Halifax, NS
As a Senior Application Developer within the Citizen and Business Services team, you will lead the design, development, modernization, and support of enterprise-grade applications and…
Added 4 days ago
G
Senior Developer (React, Next.js & TypeScript)
GlobalVariable
Toronto, ON
- Contract
Technology stack : Microsoft Dynamics CRM (backoffice), MuleSoft (middleware) and Java/React (public facing portal)
Added 4 days ago
ZS
Technical Business Analyst
Zodiac Solutions, Inc
Montreal, QC
- Full-time
Should have prior experience in Java development, microservices. API understanding
Added 4 days ago
C
Capital Management Technology Engineering Lead - SVP
Citi
Mississauga, ON
- Full-time
…designing and delivering front to back business solution in Java, Angular & Database…
Added 4 days ago
AS
Full Stack Developer
Axelon Services Corporation
Montreal, QC
- $77.93 CAD / hour
- Other
Design, develop, and maintain scalable, secure, and efficient backend services using Java, including RESTful APIs and microservices.
Added 4 days ago
TI
Software Developer
Teckhorizon Inc
Toronto, ON
- Contract
Our Client is seeking an experienced Senior Software Developer with strong expertise in Next.js, React, TypeScript, JavaScript, and modern web application development to design and develop…
Added 4 days ago
I-
Devops Engineer
I8IS - Infiniti Software Solutions
Mississauga, ON
- Full-time
Candidate needs to be a self-reliant resource and well versed in doing basic java/ config fixes instead of depending on dev team for everything
Added 4 days ago
SI
Software Engineer - Strong Java, Python and Linux experience
Smart IT Frame LLC
Toronto, ON
- Contract
Job Title: Software Engineer - Strong Java, Python and Linux experience
Added 4 days ago
V
Full Stack Engineer
VySystems
Toronto, ON
- Full-time
Strong hands-on experience with Java, Spring Boot, Angular, React, REST APIs, and microservices architecture.
Added 4 days ago
PG
Full Stack Java Developer
Pacer Group
Toronto, ON
- $50 to $60 CAD / hour
- Contract
Hands-on expertise in Angular, Java, Spring Boot, Node.js, TypeScript, and JavaScript.
Added 4 days ago
AI
Senior Dotnet Developer
Aptino, Inc.
Montreal, QC
- $45 to $50 CAD / hour
- Contract
We are looking for an experienced Senior .NET Developer to design, develop, maintain, and modernize enterprise applications. The ideal candidate will have strong hands-on experience with…
Added 4 days ago
V
Full Stack Engineer
VySystems
Toronto, ON
- Full-time
Strong hands-on experience with Java, Spring Boot, Angular, React, REST APIs, and microservices architecture.
Added 4 days ago
M
Senior Full Stack Java Engineer
Miratech
ON · Ontario, CANADA
- Full-time
…Experience (CX), and operational business processes. You will use Java and Spring Boot to develop scalable backend services, React with TypeScript to create responsive user experiences, and…

Aptino, Inc.

Senior Dotnet Developer

Montreal, QC, Canada

$45 to $50 CAD / hour · Contract

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Job details

Pay: $45 to $50 CAD / hour
Job type: Contract
Apply by: Dec 4, 2026
Experience: 5+ years of hands-on experience in Microsoft .NET technologies.
Posting language: English
Posted: Nov 4, 2026

Original job description

We are looking for an experienced Senior .NET Developer to design, develop, maintain, and modernize enterprise applications. The ideal candidate will have strong hands-on experience with C#, .NET Core, API development, Windows applications, application troubleshooting, and enterprise integrations.

Key Responsibilities

Design, develop, implement, and maintain enterprise applications using C# and .NET/.NET Core.
Support and modernize legacy applications while improving performance, stability, and maintainability.
Develop and integrate REST APIs, SOAP web services, HTTP services, and XML-based integrations.
Troubleshoot application issues, perform root cause analysis, and resolve security vulnerabilities.
Support applications running on Windows 10/11, Windows Server, cloud, and container platforms.
Work with OpenShift and containerized application environments.
Participate in code reviews, testing, deployment, CI/CD, and production support.
Collaborate with Agile teams, infrastructure, SRE, and business stakeholders.

Required Skills

5+ years of hands-on experience in Microsoft .NET technologies.
Strong expertise in C#, .NET, and .NET Core.
Experience with front-end, back-end, desktop, and Windows-based applications.
Strong knowledge of REST APIs, SOAP, HTTP services, and XML.
Experience with OAuth, Active Directory, application certificates, and authentication mechanisms.
Experience in application debugging, troubleshooting, root cause analysis, and legacy code refactoring.
Knowledge of CI/CD, source control, and deployment processes.
Exposure to OpenShift, Kubernetes, or containerized environments.
Strong communication, analytical, and problem-solving skills.

Nice to Have

Experience with Java, Spring Boot, and Spring MVC.
Knowledge of Maven/Gradle, JUnit, and Hibernate/JPA.
Experience with microservices and cloud platforms.
Banking or financial services industry experience.

Important Requirement

Candidates must be willing to work onsite in Montreal 4 days per week. This requirement is non-negotiable.

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More about this job

Responsibilities

Design, develop, maintain, and modernize enterprise applications using C# and .NET, and build integrations through REST APIs, SOAP services, HTTP services, and XML. Troubleshoot and secure applications, support Windows and containerized environments, and contribute to code reviews, testing, CI/CD, deployments, and production support.

Requirements

Candidates need at least five years of hands-on Microsoft .NET experience, strong C# and .NET Core expertise, and experience with application development, integrations, authentication, debugging, and legacy code. The role also calls for CI/CD and deployment knowledge, exposure to container platforms, strong communication and problem-solving skills, and willingness to work onsite in Montreal four days per week.

Skills

C#
.NET
.NET Core
REST APIs
SOAP
HTTP Services
XML
OAuth
Active Directory
Application Certificates
Application Troubleshooting
Root Cause Analysis
CI/CD
OpenShift
Kubernetes
Legacy Code Refactoring

Visa sponsorship

Not detected in the job text

Keywords

C#
.NET
.NET Core
Enterprise Applications
REST APIs
SOAP Web Services
HTTP Services
XML
OAuth
Active Directory
Application Certificates
Windows 10
Windows 11
Windows Server
OpenShift
Kubernetes
Containers
CI/CD
Source Control
Code Reviews
Agile
Application Security
Legacy Modernization
Java
Spring Boot
Spring MVC
Maven
Gradle
JUnit
Hibernate/JPA

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