Senior .NET Developer

Symbiotic Group; Toronto; On-site; CAD 110,000 - 150,000; Full time

Job summary

Symbiotic Digital, a division of Symbiotic Group, is seeking a Senior .NET Developer in Toronto to lead modernisation initiatives. You’ll design, implement, and integrate secure SaaS solutions while ensuring quality and operational readiness.

You will collaborate with stakeholders, vendors, and technical teams to deliver scalable, compliant software with strong data management and CI/CD practices.

Qualifications

• 10+ years of experience building and maintaining secure, scalable web and desktop applications using Microsoft Azure and .NET technologies.
• 5+ years of experience designing, building, modelling, and configuring database management solutions.
• Experience with C#, MVC, Entity Framework, ReactJS, HTML5, CSS.
• Experience with DevOps CI/CD pipelines.
• Experience in Agile software development environments.
• Experience collaborating with cross-functional teams, vendors, business stakeholders, and technology partners.

Responsibilities

• Support the implementation and configuration of a SaaS-based solution.
• Develop and maintain integrations between enterprise systems and the SaaS platform.
• Translate business requirements, functional specifications, integration requirements, and technical designs into tested solution components.
• Support deployment activities and post-implementation stabilization.
• Collaborate with technical teams, infrastructure, security, and vendor resources.
• Design, build, model, and configure database management solutions.
• Establish best practices for development, testing, QA, and deployments.

Skills

C#

MVC

Entity Framework

ReactJS

HTML5

CSS

DevOps CI/CD

Azure

Agile

SDLC

Cross-functional teams

Job description

We are seeking a Senior .NET Developer to support a large-scale modernization initiative involving the implementation and integration of a Software-as-a-Service (SaaS) solution. This role will focus on system integration, application development, testing, deployment, and operational readiness activities while ensuring compliance with security, privacy, and accessibility standards.

The successful candidate will collaborate with business stakeholders, technical teams, and vendor partners to design, develop, integrate, test, and support secure, scalable, and sustainable technology solutions.

Key Responsibilities

Solution Development & Integration

• Support the implementation and configuration of a SaaS-based solution.
  
• Develop and maintain integrations between enterprise systems and the SaaS platform.
  
• Translate business requirements, functional specifications, integration requirements, and technical designs into tested solution components.
  
• Support deployment activities and post-implementation stabilization.
  

Testing & Quality Assurance

• Support System Integration Testing (SIT), User Acceptance Testing (UAT), performance testing, and deployment readiness assessments.
  
• Analyze defects, perform troubleshooting, and implement remediation activities.
  
• Ensure solution quality and operational readiness before production deployment.
  

Technical Collaboration

• Collaborate with technical teams, infrastructure specialists, security teams, business stakeholders, and vendor resources.
  
• Resolve technical issues and manage dependencies impacting project milestones.
  
• Support knowledge transfer activities and documentation efforts.
  

Database & Data Management

• Design, build, model, and configure database management solutions.
  
• Develop backup and restoration procedures.
  
• Perform database tuning, performance monitoring, capacity planning, forecasting, and data migration activities.
  
• Support development teams with database design activities.
  

Development Best Practices

• Establish best practices for development, testing, quality assurance, and deployments.
  
• Participate in code reviews and quality assurance activities.
  
• Support CI/CD pipeline development and automation.
  
• Apply industry-standard accessibility, security, and architectural best practices.
  

Required Qualifications

Mandatory Skills

• 10+ years of experience building and maintaining secure, scalable web and desktop applications using Microsoft Azure and .NET technologies.
  
• Demonstrated experience with full software development life cycle implementation using:
  
• C#
  
• MVC
  
• Entity Framework
  
• ReactJS
  
• HTML5
  
• CSS
  
• Experience with DevOps CI/CD pipelines.
  
• 5+ years of experience designing, building, modelling, and configuring database management solutions.
  
• Experience in data modelling, reporting, and dashboard development.
  
• Experience working within Agile software development environments.
  
• Experience collaborating with cross-functional teams, vendors, business stakeholders, and technology partners.
  

Technical Experience

• Code Review and Quality Assurance
  
• Performance Monitoring and Database Optimization
  
• Backup and Recovery Procedures
  
• Data Migration Activities
  
• Accessibility Standards
  
• Security Best Practices
  

Additional Skills

• Strong analytical and problem-solving capabilities.
  
• Experience diagnosing and resolving complex system issues.
  
• Ability to assess business needs and develop effective technology solutions.
  
• Strong communication and interpersonal skills.
  
• Ability to research and adopt emerging technologies and development practices.
  

Preferred Experience

• Experience working within large enterprise environments.
  
• Experience collaborating across multiple business and technology stakeholder groups.
  

Knowledge Transfer

• Participate in knowledge transfer activities throughout the assignment.
  
• Ensure all design artifacts, documentation, and source code are maintained in approved repositories.
  
• Support transition and handover activities to permanent support teams.
  

About Symbiotic Digital.

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 enable us to provide the Expert Technical staff needed to solve challenging business and IT problems. IT leaders in the most reputable organizations in Canada have relied on Symbiotic Digital to help them staff difficult assignments with proven Experts uniquely evaluated by our proven QMS- Quality Management System Staff Development Model. We are a 100% Indigenous owned company.