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Added 11 mins ago
Architectural Technologist
WF Group Inc.
Edmonton, AB
Develop and coordinate architectural systems and technical details, including high performance building envelope assemblies.
Added 11 mins ago
Senior Plant Process Engineer
ERCO Worldwide
Saskatoon, SK
ERCO Worldwide is looking for a Senior Plant Process Engineer to join our Saskatoon team! Under supervision of the Plant Manager, the Senior Plant Process Engineer monitors processes within…
Added 11 mins ago
TG
Senior Manager, AI and Data
TMX Group
Toronto, ON
- $165,000 to $175,000 CAD / year
- Full-time
…operating model, we're powering some of the nation's most critical systems, fueling capital formation and innovation, bringing increased opportunity to business visionaries, product…
Added 11 mins ago
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Specialized Market Risk Associate (5375)
TD
Toronto, ON
- Full-time
…classes. This individual will provide critical insights to senior management, helping shape strategic decisions and ensuring the firm is well-positioned to manage market volatility and…
Added 11 mins ago
Security Manager
PACT
ON · Mississauga, Ontario
…measures across construction activities. Working closely with Senior Project Manager -Logistics & Security, Logistics Manager, Central Logistics Hub Manager, Sub-Program Leads, Site…
Added 11 mins ago
S
Environmental Engineer
SMARTFOX
ON · Ontario, Canada
- $60,000 to $100,000 CAD / year
- Full-time
Design and evaluate water and wastewater treatment systems, stormwater management, and erosion and sediment control
Added 11 mins ago
BI
Programming Manager
BOS Innovations Inc.
London, ON
- Full-time
…energy to advanced industries -providing intelligent automation systems built on precision, reliability, and…
Added 11 mins ago
PI
Senior RF Engineer – Electromagnetic Design & Simulation
Photonic Inc.
Coquitlam, BC
- $117,000 to $161,000 CAD / year
- Full-time
We are looking for a Senior RF Engineer to join our hardware team and own the electromagnetic design, simulation, and validation of on-chip and chip-scale RF structures that deliver control…
Added 11 mins ago
CR
Acheteur projet/Acheteuse projet
CAD Railway Industries Ltd.
Montreal, QC
- Full-time
Added 11 mins ago
AE
Maintenance Manager
Agrocrop Exports Ltd.
Bolton, ON
- Full-time
…standard for preventive and predictive maintenance, reliability engineering, and CMMS governance. You'll operate as a strategic partner to senior leadership, translating asset performance…
Added 11 mins ago
J(
EMS Engineer/Software Developer
JSG (Johnson Service Group, Inc.)
Calgary, AB
- Full-time
In consultation and collaboration with the senior engineers, provides technical solutions and design recommendations to the EMS Systems Manager.
Added 27 mins ago
S
Civil Engineer - EIT
Stantec
Calgary, AB
- Full-time
Our Calgary office has an opportunity for a Civil EIT. You should be able to evaluate, select, specify, and engineer systems or products for a project. You will perform a variety of tasks…
Added 27 mins ago
GT
Operations and Project Coordinator
GeoSpectrum Technologies, Inc
Port Coquitlam, BC
- Full-time
…projects and initiatives running smoothly. Working closely with senior leaders and cross-functional teams, the Operations and Project Coordinator ensures smooth day-to-day office…
Added 27 mins ago
A
Senior SDET
Air-tek
Toronto, ON
- Full-time
We’re looking for a Senior Software Development Engineer in Test (SDET) to build and improve the infrastructure that makes reliable, scalable testing possible.
Added 42 mins ago
I
Directeur adjoint, Architecture de solutions d’IA/ Associate Principal, AI Solution Architecture
IQVIA
Ottawa, ON
- Full-time
…validation, and solution delivery to help clients deploy AI systems that are technically effective, operationally scalable, and demonstrably trustworthy. Working across business…
Added 42 mins ago
Senior Analyst, Fraud Strategy
Momentum Financial Services Group
Toronto, ON
…get anywhere else. Whether you're solving problems, building systems, or shaping strategy, your work fuels real support for real…
Added 42 mins ago
A
Senior Document Controller
Arcadis
Vancouver, BC
- Full-time
Arcadis is seeking a highly experienced Senior Document Controller to provide dedicated support to the Engineering Services During Construction (ESDC) team. This is not a developmental…
Added 42 mins ago
A
Assistant Cost Manager
Arcadis
Toronto, ON
- Full-time
…within a small team in preparing detailed cost reports for senior management, provides expert advice on budget variances, and delivers reliable estimates for costs to complete. Close…
Added 42 mins ago
A
Instrumentation & Monitoring Quality Assurance Lead
Arcadis
Vancouver, BC
- Full-time
Arcadis is seeking a Senior Instrumentation and Monitoring (I&M) Quality Assurance Lead to establish and lead the independent I&M QA function supporting construction. The role is…
Added 42 mins ago
TW
Senior Manager, Planning
The Warrington Group Inc.
St. Stephen, NB
- Full-time
On behalf of our client, Ganong Bros Ltd, we are looking for an experienced Senior Manager, Planning to join their team, supporting the continued growth and evolution of their supply chain…
Added 42 mins ago
S
Manager, Program Controls
Seaspan
North Vancouver, BC
- Full-time
The position is responsible for the administration and enhancement of Earned Value Management Systems (EVMS), maintenance of program baselines, forecasting, performance reporting, and…
Added 42 mins ago
E
Senior Product Manager, Ad Audiences
eBay
Toronto, ON
- Full-time
As the Senior Product Manager, Ad Audiences you will lead key advertising technologies within our stack and make them outstanding in delivering speed for advertisers. You will identify and…
Added 42 mins ago
Planner
Hatch
Mississauga, ON
…best-in-class team leverages methodologies, governance and systems that are unparalleled in the engineering space. Are you looking for an opportunity to join a diverse group of…
Added 42 mins ago
Cyber/Technology Risk Senior IT Business Systems Analyst
The Canada Life Assurance Company
Winnipeg, MB · London, ON · Toronto, ON
We are seeking a Senior IT Business Systems Analyst to join our high-performing team within the Information Security and Technology Risk portfolio. This role is pivotal in delivering…
Added 42 mins ago
M
RQ11255 - Systems Testing/QA Specialist - Senior
Maarut
Toronto, ON
- Contract
Plans and organizes testing efforts for large systems in

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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