Software Developer - Senior

Toronto, ON
On-site
Posted Oct 29, 2026
1 position

Opens LinkedIn

Employment type: Contract
Experience level: Senior · 5+ years
Posting language: English
Working hours: 40 hours per week
Seniority: Not Applicable

Job summary

Design, develop, test, and maintain enterprise applications using .NET technologies, Azure, and SQL Server, including APIs, databases, and system integrations. Conduct code reviews and testing, support deployments and production issues, collaborate with stakeholders, and ensure applications meet security, performance, and accessibility standards.

Job details

We are seeking an experienced Software Developer to design, develop, test, and maintain enterprise applications using Microsoft .NET technologies, SQL Server, and Microsoft Azure. WORK ARRANGEMENT: 100% ONSITE - 5 DAYS PER WEEK, MONDAY TO FRIDAY. Key Responsibilities Design, develop, test, and maintain applications using C#, ASP.NET, .NET Core, and Web APIs. Develop and support cloud-based solutions using Microsoft Azure. Design and optimize SQL Server databases, stored procedures, queries, and data models. Develop REST APIs, web services, and system integrations. Perform code reviews, unit testing, debugging, and technical troubleshooting. Support deployments, upgrades, data migrations, and production issues. Collaborate with technical teams and business stakeholders to translate requirements into solutions. Ensure applications meet security, performance, and accessibility standards. Required Skills Strong experience with C#, ASP.NET, .NET Core, and Web APIs. Hands-on experience with Microsoft Azure and Azure DevOps. Strong SQL Server skills, including database design, stored procedures, and query optimization. Experience across the full Software Development Life Cycle (SDLC). Knowledge of object-oriented programming, design patterns, and application architecture. Experience with RESTful services, Entity Framework, and application integrations. Experience with HTML, CSS, JavaScript, and responsive web development. Experience deploying applications using Windows Server and IIS. Strong analytical, problem-solving, communication, and documentation skills. Preferred Skills Experience with CI/CD pipelines and DevOps practices. Knowledge of application security, performance monitoring, and cloud-native development. Experience with server and network troubleshooting. Knowledge of accessibility standards, including AODA and WCAG. Experience with technical design reviews and production support. Desired Skills and Experience We are seeking an experienced Software Developer to design, develop, test, and maintain enterprise applications using Microsoft .NET technologies, SQL Server, and Microsoft Azure. WORK ARRANGEMENT: 100% ONSITE - 5 DAYS PER WEEK, MONDAY TO FRIDAY. Key Responsibilities Design, develop, test, and maintain applications using C#, ASP.NET, .NET Core, and Web APIs. Develop and support cloud-based solutions using Microsoft Azure. Design and optimize SQL Server databases, stored procedures, queries, and data models. Develop REST APIs, web services, and system integrations. Perform code reviews, unit testing, debugging, and technical troubleshooting. Support deployments, upgrades, data migrations, and production issues. Collaborate with technical teams and business stakeholders to translate requirements into solutions. Ensure applications meet security, performance, and accessibility standards. Required Skills Strong experience with C#, ASP.NET, .NET Core, and Web APIs. Hands-on experience with Microsoft Azure and Azure DevOps. Strong SQL Server skills, including database design, stored procedures, and query optimization. Experience across the full Software Development Life Cycle (SDLC). Knowledge of object-oriented programming, design patterns, and application architecture. Experience with RESTful services, Entity Framework, and application integrations. Experience with HTML, CSS, JavaScript, and responsive web development. Experience deploying applications using Windows Server and IIS. Strong analytical, problem-solving, communication, and documentation skills. Preferred Skills Experience with CI/CD pipelines and DevOps practices. Knowledge of application security, performance monitoring, and cloud-native development. Experience with server and network troubleshooting. Knowledge of accessibility standards, including AODA and WCAG. Experience with technical design reviews and production support.

What you’ll do

Requirements

Requires strong experience with C#, ASP.NET, .NET Core, Web APIs, Azure, Azure DevOps, and SQL Server, along with full SDLC experience and knowledge of application architecture and object-oriented design. Candidates should also have experience with RESTful services, Entity Framework, responsive web development, and Windows Server/IIS deployments, plus strong analytical, communication, and documentation skills.