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Added 10 mins ago
J
Telecommunications Payload System Engineer
Jobgether
Canada
- Full-time
…satellite solutions. You will collaborate with systems, hardware, software, and integration specialists to validate subsystem performance and ensure reliability throughout the development…
Added 10 mins ago
J
Senior Orbit Dynamics & Mission Analysis Engineer
Jobgether
Canada
- Full-time
…partner is looking for a Senior Orbit Dynamics & Mission Analysis Engineer based in…
Added 10 mins ago
M
Software Engineer II
Microsoft
Vancouver, BC
- Full-time
Added 10 mins ago
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Senior Software Engineer
Microsoft
Vancouver, BC
- Full-time
As a Senior Software Engineer, you will be a hands-on technical leader working across the PowerPoint for the web stack. You will design and deliver end-to-end AI-powered features, from…
Added 24 mins ago
Q
Verification Engineer, Senior
Qualcomm
Toronto, ON
- Full-time
…create a smarter, connected future for all. As a Qualcomm ASIC Engineer, you will define, model, design (digital and/or analog), optimize, verify, validate, implement, and document IP…
Added 39 mins ago
J
Lead Product Manager, Technical
Jobgether
Canada
- Full-time
Preferred engineering background: Previous experience as a software engineer or in another technical role is an advantage.
Added 39 mins ago
J
Senior Orbit Dynamics & Mission Analysis Engineer
Jobgether
Canada
- Full-time
…partner is looking for a Senior Orbit Dynamics & Mission Analysis Engineer based in…
Added 1 hour ago
K
Civil Superintendent
Kiewit
Toronto, ON
- Full-time
…maintain positive working relationships with clients, architect/engineer, suppliers, subcontractors, and jobsite…
Added 1 hour ago
K
ECD - Superintendent - Civil/Structural (Travel Projects)
Kiewit
Halifax, NS
- Full-time
…maintain positive working relationships with clients, architect/engineer, suppliers, subcontractors, and jobsite…
Added 1 hour ago
K
ECD - Project Engineer - Travel Projects
Kiewit
Oakville, ON
- Full-time
As a Project Engineer, you will be responsible for the administrative and technical aspects of constructing a project, managing a team of field and cost engineers. Do you have strong…
Added 1 hour ago
K
ECD - Project Engineer - Travel Projects
Kiewit
Toronto, ON
- Full-time
As a Project Engineer, you will be responsible for the administrative and technical aspects of constructing a project, managing a team of field and cost engineers. Do you have strong…
Added 1 hour ago
K
ECD - Project Engineer - Travel Projects
Kiewit
Halifax, NS
- Full-time
As a Project Engineer, you will be responsible for the administrative and technical aspects of constructing a project, managing a team of field and cost engineers. Do you have strong…
Added 1 hour ago
B
Engineer II
BrandSafway
Pickering, ON
- Full-time
Performs engineering calculations as required using engineering software like RISA, TEDDS, SCIA and others.
Added 1 hour ago
B
Engineer III
BrandSafway
Pickering, ON
- Full-time
Performs engineering calculations as required using engineering software like RISA, TEDDS, SCIA and others.
Added 1 hour ago
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Principal Software Development Engineer
Workday
Vancouver, BC · Canada, BC, Vancouver
- Full-time
As a Principal Full Stack Software Engineer in Agent Factory, you’ll help build the user-facing and platform experiences that bring Workday’s AI agents to life. Working within a small,…
Added 1 hour ago
RI
AI Engineer
Remarcable, Inc.
Remote, Canada
- Full-time
- Remote
Remarcable builds the software that keeps trade contractors' crews equipped and on schedule. Our platform brings material procurement, inventory and tool tracking, prefab requisitions and…
Added 1 hour ago
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Senior AI Engineer (NVIDIA + LLM Inference) - Onsite - Toronto, Canada
FullStack
Toronto, ON
- Full-time
Offering life-changing career opportunities to talented software professionals across the Americas.
Added 2 hours ago
C
Solutions Designer, Splunk Montreal, Quebec, Canada
Cisco
Montreal, QC
- Full-time
Splunk is seeking a highly skilled and strategic Senior Solutions Engineer to join our Eastern Canada team. Splunk, a Cisco company, is building a safer and more resilient digital world…
Added 2 hours ago
D
Principal Software Engineer, Docker Hardened Images
Docker
Remote, Canada
- Full-time
- Remote
Docker Hardened Images (DHI) is Docker's catalogue of security-hardened, enterprise-grade container images and Helm charts, built to be minimal, up-to-date, and safe to deploy in regulated…
Added 2 hours ago
WI
Senior Electrical Engineer
WSP in Canada
Markham, ON
- Full-time
Join our Buildings M&E team as a Senior Electrical Engineer and help shape electrical solutions for diverse projects across Canada. Based in Thornhill/Markham (GTA), you’ll bring…
Added 2 hours ago
GG
Electrical Engineer
Giampaolo Group Inc.
Brampton, ON
- Full-time
Reporting to the Senior Director, Engineering and Maintenance, the Electrical Engineer will provide support across a variety of functional groups by providing innovative solutions that…
Added 2 hours ago
MC
EMS Engineer
MatchBox Consulting Group
Calgary, AB
- Full-time
Review of application patches and system configurations; support testing of software security updates, such as patches and anti-virus.
Added 3 hours ago
WI
Senior Electrical Engineer
WSP in Canada
Vaughan, ON
- Full-time
Join our Buildings M&E team as a Senior Electrical Engineer and help shape electrical solutions for diverse projects across Canada. Based in Thornhill/Markham (GTA), you’ll bring…
Added 3 hours ago
GI
Java Software Engineer
G-FORCE IT SERVICES INC
ON · Ontario, Canada
- Full-time
…engineers, QA, and product owners to deliver clean, reliable software that solves real business…
Added 3 hours ago
AP
Senior Data Engineer
Alpine Peak Management
Toronto, ON
- Contract
Adhere to established architecture, security, data governance and software development standards.

Flexkube Lab Inc.

Senior Software Engineer - .NET, C# & APIs

Toronto, ON, Canada
Greater Toronto Area, Canada, Canada

Contract

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Job details

Job type: Contract
Apply by: Nov 25, 2026
Experience: 8+ years of professional software engineering experience, with strong hands-on development expertise in C# and .NET.
Posting language: English
Posted: Oct 26, 2026

Original job description

In this role, you will design, develop, modernize, and maintain enterprise applications and APIs that support business-critical solutions for our clients.

We are looking for an experienced, hands-on engineer who brings strong backend development capabilities, an understanding of modern frontend frameworks, and experience delivering secure, scalable, and reliable software.

You will collaborate with cross-functional engineering teams, contribute to technical design decisions, and leverage modern development practices, including AI-assisted engineering tools, to improve software quality and delivery efficiency.

Why This Role Is Open

We are currently hiring for this role due to an existing or newly created vacancy within our organization. This position is open as part of our ongoing business needs, and we are actively reviewing applications to fill this role with a qualified candidate who can make an immediate impact.

What You’ll Do

Design, develop, and maintain scalable backend services and enterprise applications using C#, .NET, ASP.NET Core, and SQL Server.
Build, enhance, and integrate secure RESTful APIs, including authentication, authorization, data validation, and error handling.
Contribute to the modernization of existing applications, including refactoring legacy code, improving performance, and enhancing system reliability.
Work across the application stack, collaborating on frontend development using React, Angular, or similar JavaScript/TypeScript frameworks.
Apply secure coding principles and API security practices, including OAuth2, JWT, and common application security standards.
Participate in technical design discussions, code reviews, automated testing, troubleshooting, and performance optimization.
Support CI/CD pipelines, containerized deployments, and development workflows using tools such as Docker.
Collaborate with engineers, product teams, and quality specialists to deliver high-quality solutions in Agile environments.
Leverage AI-assisted development tools responsibly to support coding, testing, debugging, and documentation while maintaining security and engineering standards.
Share technical knowledge and contribute to continuous improvements in development practices and software quality.

What We’re Looking For

8+ years of professional software engineering experience, with strong hands-on development expertise in C# and .NET.
Solid experience building and maintaining applications using ASP.NET Core, Web API, and RESTful services.
Strong understanding of backend architecture, API design, system integrations, and object-oriented programming principles.
Experience working with SQL Server or comparable relational databases, including data access technologies such as Entity Framework Core or Dapper.
Experience with modern frontend development using React, Angular, or similar JavaScript/TypeScript frameworks.
Understanding of application security principles, including authentication, authorization, OAuth2, JWT, and secure coding practices.
Experience working with Git, code reviews, automated testing, CI/CD pipelines, and Agile software delivery.
Strong problem-solving and troubleshooting skills, with the ability to investigate and resolve complex technical issues.
Ability to collaborate effectively with cross-functional teams and communicate technical concepts clearly.

Bonus Points For

Experience modernizing legacy .NET applications or migrating enterprise systems to modern architectures.
Exposure to Azure or AWS cloud environments, Docker, Kubernetes, or cloud deployment troubleshooting.
Experience with performance optimization, application monitoring, and production support.
Familiarity with accessibility standards such as WCAG or AODA.
Experience with Snowflake, data warehouses, or enterprise data integrations.
Experience with Tailwind CSS, shadcn/ui, or other modern frontend component libraries.
Experience using AI-assisted software development tools such as GitHub Copilot, ChatGPT, or other AI-powered coding and testing solutions.
Experience mentoring developers, contributing to technical documentation, or improving engineering standards.

Apply About employer

More about this job

Responsibilities

Design, develop, modernize, and maintain enterprise applications and secure, scalable APIs using C#, .NET, ASP.NET Core, and SQL Server. Collaborate across engineering and product teams on frontend work, security, testing, CI/CD, troubleshooting, performance improvements, and responsible use of AI-assisted development tools.

Requirements

Requires 8+ years of software engineering experience and strong hands-on expertise in C# and .NET, including ASP.NET Core, Web API, RESTful services, backend architecture, and relational databases. Candidates should also have frontend framework experience, knowledge of application security, and experience with Git, code reviews, automated testing, CI/CD, and Agile delivery.

Skills

C#
.NET
ASP.NET Core
RESTful APIs
SQL Server
Entity Framework Core
Dapper
React
Angular
OAuth2
JWT
Docker
CI/CD
Automated Testing
Agile
Application Security

Visa sponsorship

Not detected in the job text

Keywords

C#
.NET
ASP.NET Core
Web API
RESTful APIs
SQL Server
Entity Framework Core
Dapper
React
Angular
JavaScript
TypeScript
OAuth2
JWT
Git
Code Reviews
Automated Testing
CI/CD
Docker
Kubernetes
Azure
AWS
Agile
Legacy Application Modernization
Performance Optimization
Application Monitoring
Snowflake
WCAG
Tailwind CSS
GitHub Copilot

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