Senior .NET / Mobile Application Developer

Job Title: Senior .NET / Mobile Application Developer
Location: Toronto, ON
Work Arrangement: Onsite – 5 Days a Week
Contract Duration: 16 Months

Job Description

We are looking for an experienced Senior Software Developer to design, develop, implement, and maintain complex applications in a multi-platform environment.

The ideal candidate will have strong experience in cross-platform mobile application development, along with expertise in technologies such as Ionic, Cordova, Flutter, .NET, C#, JEE, Microsoft SQL Server, JavaScript frameworks, and Azure Cloud services.

The candidate will be responsible for developing scalable applications, enhancing existing features, integrating APIs, troubleshooting technical issues, and ensuring high-quality software delivery throughout the Software Development Life Cycle (SDLC).

Must-Have Skills

1. Cross-Platform Mobile App Development

• 5+ years of experience with cross-platform mobile application development.

• Hands-on experience with Ionic Framework, Cordova plugins, Google Flutter, or equivalent technologies.

2. Application Development

• 5+ years of experience designing, developing, and implementing complex interactive applications in a multi-platform environment.

• Experience with .NET, C#, JEE, Microsoft SQL Server, and JavaScript frameworks.

• Strong understanding of SOAP and REST web services.

Technical Skills & Requirements

Development Skills

• Experience with Azure Cloud services, including:

  • Azure SQL

  • Azure Functions

  • API Management

  • Streaming Analytics

  • Event Hub

  • Data Factory / Databricks

• Experience with XHTML, HTML5, JavaScript, jQuery, and AngularJS.

• Ability to develop web applications, web services (SOAP and REST), and Windows client applications.

• Experience developing and integrating APIs.

• Familiarity with Swagger, OpenAPI, Postman, and Apigee.

• Experience with multithreaded applications, Dependency Injection (IoC) frameworks, and concurrency patterns.

• Experience with code refactoring and optimization.

• Strong knowledge of object-oriented programming, design patterns, and architectural patterns.

• Ability to develop scalable applications using software design best practices.

Technical Skills

• Experience across the Software Development Life Cycle (SDLC) and Application Lifecycle Management.

• Experience with unit, performance, and load testing.

• Ability to translate business requirements into technical solutions.

• Knowledge of CI/CD pipelines and DevOps practices.

• Understanding of UI/UX design principles.

• Knowledge of security concepts, including authentication, authorization, encryption, digital signatures, PKI, and SSL.

• Experience with OAuth, JWT, SAML, OIDC, and Mutual TLS.

• Experience with version control systems such as Git.

• Troubleshooting, incident resolution, and post-implementation support experience.

Key Responsibilities

• Review existing application code and architecture and implement improvements to ensure modularity and scalability.

• Develop enhancements to existing features and build new features based on approved requirements.

• Translate technical specifications into functional and tested applications.

• Develop detailed programming specifications and write, maintain, and test code.

• Provide realistic development estimates to support project planning.

• Capture business requirements and update business rules accordingly.

• Follow structured development methodologies and software design best practices.

• Create custom reports using Microsoft technologies.

• Conduct application testing, integration, and deployment.

• Identify, analyze, and recommend solutions for production defects.

• Troubleshoot technical issues related to software implementation, conversion, and migration.

• Maintain clear technical documentation.

• Support the transition of developed applications to full-time resources.

General Skills

• Strong programming, analytical, and problem-solving skills.

• Experience working throughout the complete SDLC.

• Knowledge of Agile methodologies.

• Experience with object-oriented analysis and design.

• Strong communication and interpersonal skills.

• Ability to collaborate with technical teams and business stakeholders.

• Ability to manage multiple projects and meet deadlines.

• Experience working in large and complex environments.

Additional / Desirable Skills

• Experience developing internet-ready applications.

• Knowledge of Rapid Application Development (RAD) methodologies.

• Understanding of Information Management principles and practices.

• Experience with middleware and gateways.

• Experience reviewing and modifying product installation scripts.

• Ability to provide post-implementation support.

• Experience conducting design walkthrough sessions.

• Knowledge of Accessibility for Ontarians with Disabilities Act (AODA) and related standards.

• Ability to prepare user and system documentation.