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Added 19 mins ago
Junior Full stack Developer (Front End Focus)
Scotiabank
Toronto, ON
Technical understanding – as a standard Software Engineer there will be expectations that you are able to lead technical discussions, challenge design and strategy
Added 33 mins ago
WT
.NET Engineer
Wissen Technology
Calgary, AB
- Full-time
We are seeking a highly skilled .NET Engineer with strong Python development experience to join our engineering team. The ideal candidate will be responsible for designing, developing, and…
Added 1 hour ago
HS
Senior Java Software Engineer
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- Full-time
We are looking for a Senior Software Engineer to join our True North team and help build and evolve Dentrix Ascend for the US market.
Added 1 hour ago
FL
Senior Software Engineer - .NET, C# & APIs
Flexkube Lab Inc.
Toronto, ON · Greater Toronto Area, Canada
- Contract
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,…
Added 1 hour ago
CI
Principal Architect
Camis Inc
Guelph, ON
- Full-time
…role (e.g., Software Architect, Technical Architect, Staff Engineer, Principal Engineer, or…
Added 1 hour ago
G
Senior Quality Assurance Automation Engineer
GryphTech
Mississauga, ON
- Full-time
We are looking for a QA Engineer to join our quality assurance team and help us validate high-quality, reliable web applications.
Added 2 hours ago
CC
Specialist, Provisioning
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- Full-time
…Each employee is a part of what makes us unique on the market: agile and…
Added 2 hours ago
RB
Data Engineer, RBC Amplify 2027, Halifax
Royal Bank of Canada
Halifax, NS
- Full-time
As a Data Engineer you will collaborate, innovate, ideate and build in a flexible, start-up environment.
Added 2 hours ago
RB
Data Engineer, RBC Amplify 2027, Calgary
Royal Bank of Canada
Calgary, AB
- Full-time
As a Data Engineer you will collaborate, innovate, ideate and build in a flexible, start-up environment.
Added 3 hours ago
WT
Python & Database Engineer
Wissen Technology
Montreal, QC
- Full-time
We are seeking a Python & Database Engineer with 3–5 years of experience in developing scalable applications, building data pipelines, and optimizing database solutions. The ideal candidate…
Added 3 hours ago
FN
Software Test Engineer II
First National Financial LP
Toronto, ON · East York, ON
- Contract
The IT Software Test Engineer II role will report directly to the Manager and Team Lead, IT Quality Assurance. The IT Software Test Engineer II role is responsible for building robust,…
Added 3 hours ago
MS
Jr. Software Engineer - Java, Angular, JavaScript
Motorola Solutions
ON · Gatineau, QC · Quebec, QC
- Full-time
…utilize development talent across multiple design centers using Agile scrum…
Added 3 hours ago
C
Specialist, Provisioning
Cogeco
Burlington, ON
- Full-time
…Each employee is a part of what makes us unique on the market: agile and…
Added 3 hours ago
RA
Quality Engineer – API & Test Automation
Recrute Action
Toronto, ON
- Contract
…automation of integrated digital solutions. Take part in an Agile environment where you will support reliable digital experiences through automated testing, data validation, and continuous…
Added 3 hours ago
Senior Frontend Engineer, Conversions (f/m/x)
HelloFresh
Toronto, ON
As a Frontend Engineer in Conversions, you will build personalized web experiences that help users find the right path through our funnels. You will focus on tailoring our user journeys…
Added 3 hours ago
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Platform Engineer
Experis Canada
Toronto, ON
- Contract
Job Title: Senior Microsoft Power Platform Engineer
Added 3 hours ago
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Data Engineer, RBC Amplify 2027, Vancouver
Royal Bank of Canada
Vancouver, BC
- Full-time
As a Data Engineer you will collaborate, innovate, ideate and build in a flexible, start-up environment.
Added 3 hours ago
RB
Data Engineer, RBC Amplify 2027, Toronto
Royal Bank of Canada
Toronto, ON
- Full-time
As a Data Engineer you will collaborate, innovate, ideate and build in a flexible, start-up environment.
Added 3 hours ago
RB
Lead AI Engineer
Royal Bank of Canada
Toronto, ON
- Full-time
We are seeking an accomplished Lead AI Engineer to design, develop, and implement AI-driven solutions within our software development lifecycle. You will lead enterprise-scale AI…
Added 4 hours ago
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Data Engineer, RBC Amplify 2027, Toronto
RBC
Toronto, ON
- Full-time
As a Data Engineer you will collaborate, innovate, ideate and build in a flexible, start-up environment.
Added 4 hours ago
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Lead AI Engineer
RBC
Toronto, ON
- Full-time
We are seeking an accomplished Lead AI Engineer to design, develop, and implement AI-driven solutions within our software development lifecycle. You will lead enterprise-scale AI…
Added 4 hours ago
CS
Senior Software Developer
CQ Search Group Ltd.
Toronto, ON
- $100 to $105 CAD / hour
- Contract
…downtown has a 12 month renewable contract for a Senior Software Engineer. If you are available, please send me your resume and I will call you back with more…
Added 4 hours ago
G
Senior Software Engineer
GryphTech
Mississauga, ON
- Full-time
Senior Software Engineer (AI-First Engineering)Position Summary
Added 4 hours ago
LI
Java Application Developer
LanceSoft, Inc.
Montreal, QC
- Contract
This role is suited to a strong, hands-on software engineer who can contribute across the full application lifecycle, from requirements gathering and solution design through development,…
Added 4 hours ago
R
Data Engineer, RBC Amplify 2027, Toronto
RBC
Toronto, ON
- Full-time
As a Data Engineer you will collaborate, innovate, ideate and build in a flexible, start-up environment.

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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