RQ00788 - Software Developer - Full Stack - Senior

RQ00788 - Software Developer - Full Stack - Senior

Job Information

Term 250 Days

Work Experience 10+ Years

City Toronto

State/Province Ontario

M4C

Technology

Job Description

Responsibilities:

• Develop and integrate secure REST APIs and modernize legacy .NET Framework, WCF, Windows Services, and Windows Forms applications.
• Build responsive web user interfaces and implement secure authentication using JWT/OAuth2.
• Develop high-performance, multithreaded, and asynchronous applications.
• Develop, configure, and support Azure cloud services, including App Services, Azure SQL, Storage, Event Hub, ADX, Key Vault, and monitoring solutions.
• Develop and optimize SQL Server databases, including complex queries, stored procedures, indexing, execution plans, and performance tuning.
• Perform application testing, production troubleshooting, root-cause analysis, and performance optimization across application, database, cloud, and infrastructure layers.
• Support DevOps and CI/CD processes using Azure DevOps and Git-based source control.
• Conduct code reviews and ensure high-quality, maintainable, secure, and well-documented software.
• Collaborate with architects, analysts, QA, infrastructure teams, and business stakeholders on technical design and solution delivery.
• Contribute to application modernization and migration of legacy systems to modern Azure-based platforms.

Required Skills:

• 10+ years of hands-on experience developing enterprise applications using C#, .NET Core/ASP.NET Core, and ASP.NET Framework 3.5/4.x, including modernization of legacy .NET applications.
• REST API Development & Security
• Strong experience designing, developing, integrating, and troubleshooting RESTful APIs, including JWT, OAuth2, authentication, and authorization.
• Angular / Front-End Development
• Microsoft SQL Server & Database Development
• Strong T-SQL development skills, including stored procedures, views, triggers, indexing, query optimization, execution plans, and database performance tuning.
• Hands-on experience with Azure App Service, Azure SQL Managed Instance, Azure Storage, Event Hub, Azure Data Explorer (ADX), Key Vault, Application Insights, and Azure Monitor.
• Experience with Azure DevOps, CI/CD pipelines, automated deployments, release management, GitHub, and/or Azure Repos.
• Performance, Multithreading & Scalability
• Strong experience with multithreaded and asynchronous programming, parallel processing, application performance optimization, and scalability across application and database layers.
• Production Troubleshooting & Testing
• Strong troubleshooting and root-cause analysis skills using KQL, Postman, SoapUI, Swagger/OpenAPI, IIS, application logs, monitoring tools, and database diagnostics.
• Legacy Application Modernization
• Experience maintaining and modernizing ASP.NET Framework, Windows Services, WCF/Web Services, Windows Forms, and IIS-hosted applications; Tomcat troubleshooting is an asset.
• Software Engineering & Architecture
• Strong knowledge of object-oriented programming, design patterns, software architecture, SDLC, Agile/Scrum, code reviews, clean code, and secure/maintainable software development practices.

Desired Skills:

• Healthcare System Integration: Experience developing and supporting integrations between healthcare applications and systems.
• HL7: Familiarity with HL7 standards and healthcare messaging, including experience troubleshooting HL7 interfaces.
• FHIR: Knowledge of FHIR standards, resources, APIs, and modern healthcare interoperability.
• Mirth Connect: Hands-on experience developing, configuring, monitoring, and troubleshooting Mirth Connect channels and integrations.

Rated Criteria:

• Modernization & Legacy Transformation Experience: Demonstrated experience decomposing monolithic applications into modular services, APIs, or microservices. Experience developing modernization roadmaps and executing phased migrations with minimal business disruption. 20 Points
• .NET Core / Backend Engineering Expertise: Advanced expertise in ASP.NET Core, REST API development, dependency injection, authentication/authorization, performance optimization, and enterprise application architecture. 20 Points
• Angular Front-End Development Expertise: Experience designing and developing Angular applications, component-based architecture, state management, responsive UI design, and integration with REST services. 15 Points
• Solution Architecture & Design Skills: Ability to design scalable, maintainable, secure, and loosely coupled solutions. Experience with DDD, API-first design, event-driven architecture, integration patterns, and modular architecture. 15 Points
• Cloud, DevOps & CI/CD Experience: Experience deploying applications in Azure, implementing CI/CD pipelines, Infrastructure as Code, containerization, automated testing, and application monitoring. 10 Points
• Quality Engineering & Secure Development: Demonstrated use of automated testing, code quality tools, security best practices, threat mitigation, and technical debt reduction strategies. 10 Points
• Communication & Team Collaboration Ability to work with architects, product owners, business analysts, and development teams. Experience mentoring developers and clearly communicating technical decisions. 10 Points

Requirements

• Develop functionalities per business requirements.
• Migrate applications from .NET Framework 4.x to .NET Core/.NET.
• Design, develop, and implement secure RESTful APIs.
• Develop modern Angular web front-ends and migrate existing AngularJS applications to Angular.
• Develop and optimize data access and database operations, including query and performance optimization.
• Conduct performance testing and tuning to improve application scalability, responsiveness, and reliability.
• Implement and enhance application security, including authentication, authorization, and secure API practices.

Must Haves

• Modernization & Legacy Transformation Experience: Demonstrated experience decomposing monolithic applications into modular services, APIs, or microservices. Experience developing modernization roadmaps and executing phased migrations with minimal business disruption.
• .NET Core / Backend Engineering Expertise: Advanced expertise in ASP.NET Core, REST API development, dependency injection, authentication/authorization, performance optimization, and enterprise application architecture.
• Angular Front-End Development Expertise: Experience designing and developing Angular applications, component-based architecture, state management, responsive UI design, and integration with REST services.
• Solution Architecture & Design Skills: Ability to design scalable, maintainable, secure, and loosely coupled solutions. Experience with DDD, API-first design, event-driven architecture, integration patterns, and modular architecture.