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About the Role

We are seeking a highly experienced Senior Software Developer to design, develop, and enhance enterprise-grade applications within a complex, mission-critical environment. The role involves working closely with project teams, contributing to system integration planning, and delivering scalable solutions aligned with established standards and best practices.

Responsibilities

• Design, develop, and implement enhancements to enterprise applications
• Translate business and functional requirements into working, tested solutions
• Develop RESTful API services using ASP.NET Web API
• Support transition to modern development practices, including Agile/Scrum and DevOps tooling
• Provide technical leadership, mentorship, and guidance to team members
• Conduct analysis, design, development, testing, and deployment of applications
• Develop programming specifications, prototypes, and user interfaces
• Perform unit testing, debugging, and issue resolution
• Provide ongoing application support including break/fix and change management
• Collaborate with stakeholders to define and implement system improvements
• Produce technical documentation, diagrams, and design artifacts (e.g., use cases, class diagrams)
• Participate in system and integration testing cycles
• Develop authentication, access control, and system interface components
• Prepare deployment packages and implementation documentation
• Ensure knowledge transfer to internal teams through documentation and collaboration
• Participate in meetings related to enhancements, incidents, and project milestones
• Ensure compliance with organizational standards, policies, and best practices
• Deliver complete documentation for functional and technical specifications
• Provide ongoing knowledge transfer to team members throughout the project lifecycle

Requirements

• Minimum 10 years of experience designing and developing enterprise-level applications
• Strong expertise with ASP.NET (Web API / REST API)
• Strong expertise with .NET Framework (including 4.8.1)
• Strong expertise with C#.NET
• Strong expertise with VB.NET
• Strong expertise with SQL
• Strong expertise with JavaScript frameworks such as Vue.js and Angular
• Experience with Windows environments (Windows 10, Windows Server 2016+)
• Familiarity with API design/documentation tools (e.g., Swagger, Postman)
• Experience with .NET Core / .NET 5+
• Hands-on experience with Visual Studio
• Hands-on experience with Azure DevOps Services / Team Foundation Server
• Hands-on experience with MS SQL Server
• Hands-on experience with Web Services and middleware technologies
• Experience with frameworks and tools such as Windows Communication Foundation (WCF)
• Experience with frameworks and tools such as Windows Presentation Foundation (WPF)
• Experience with frameworks and tools such as Entity Framework
• Experience with frameworks and tools such as Enterprise Library
• Strong experience in structured development methodologies (Agile & Waterfall)
• Strong experience in application performance tuning and troubleshooting
• Strong experience in database technologies and data integration
• Strong experience in technical documentation and architecture design
• Strong analytical and problem-solving abilities
• Excellent communication (verbal and written)
• Ability to collaborate effectively with both technical and non-technical stakeholders
• Proven leadership and mentorship experience
• Strong time management and ability to meet deadlines

Skills

• ASP.NET (Web API / REST API)
• .NET Framework (4.8.1)
• C#.NET
• VB.NET
• SQL
• Vue.js
• Angular
• Windows environments (Windows 10, Windows Server 2016+)
• API design/documentation tools (Swagger, Postman)
• .NET Core / .NET 5+
• Visual Studio
• Azure DevOps Services / Team Foundation Server
• MS SQL Server
• Web Services
• Middleware technologies
• Windows Communication Foundation (WCF)
• Windows Presentation Foundation (WPF)
• Entity Framework
• Enterprise Library
• Agile
• Waterfall
• Application performance tuning
• Troubleshooting
• Database technologies
• Data integration
• Technical documentation
• Architecture design
• Analytical skills
• Problem-solving skills
• Communication skills (verbal and written)
• Collaboration
• Leadership
• Mentorship
• Time management
• Deadline management

Location

• Toronto, ON

Work Type

• Onsite
• 6 Months

Experience Level

• Senior
• Minimum 10 years

About the Company

• Symbiotic Digital provides the IT Experts you need that solve problems and get things done.
• See what the top 2% in their field can do for you.
• Symbiotic Digital is a division of Symbiotic Group Inc.
• We serve customers in two ways, we provide: Digital Experts: IT Consulting expertise. Bright Minds That Produce Proven Results, Recruitment: Find The Right People You Need
• Serving IT & Business leaders, Symbiotic Digital provides a business system that enables us to provide the Expert Technical staff needed to solve challenging business and IT problems.
• IT leaders in top organizations across Canada rely on Symbiotic Digital to staff difficult assignments with proven Experts, evaluated through our QMS - Quality Management System Staff Development Model.
• We are a 100% Indigenous-owned company.
• Learn more online at https://www.symbioticgroup.com/home-sd/.