Back End Developer

Appfabs Incorporation; Toronto; On-site; CAD 90,000 - 120,000; Full time

Job summary

A technology solutions company is seeking a Senior Backend Developer to join their team in Toronto, Ontario. This role involves designing and maintaining microservices-based backend systems using .NET in a cloud-native Azure environment. The successful candidate will have at least 5 years of backend experience with C# and a strong understanding of Azure services, including SQL Server and Kubernetes. The position requires an independent engineer capable of taking full ownership of complex projects, collaborating cross-team, and leading technical discussions.

Qualifications

• 5+ years of experience in backend development with C# and .NET Core/.NET 6+.
• Strong hands-on frontend expertise in Angular.
• Proven experience with Azure SQL Server and T-SQL.

Responsibilities

• Design, develop, and maintain microservices-based backend systems.
• Implement complex business logic for CRM functionalities.
• Take full ownership of services end-to-end.

Skills

Backend development experience with C#

Frontend expertise in Angular

GraphQL and RESTful API design

Experience with Azure SQL Server

Knowledge of Microsoft Azure cloud services

Containerized applications with Docker and Kubernetes

Azure DevOps for CI/CD

Microservices architecture understanding

Tools

Azure DevOps

Docker

Kubernetes

Job description

We are seeking an experienced Senior Backend Developer to join our engineering team ASAP, who is responsible for the cloud-native backbone powering InterAction+, CRM solution for law firms and professional services organizations.

This role requires a self-driven engineer who can take full ownership of complex backend services, collaborate across multiple product teams, and drive technical excellence in a distributed microservices environment.

Key Responsibilities

Technical Ownership & Development

• Design, develop, and maintain microservices-based backend systems using .NET 6/8 and C# in a cloud-native Azure environment
• Build and optimize GraphQL APIs (HotChocolate) and RESTful services for high-performance, multi-tenant applications
• Develop and maintain API Gateway and Proxy services that handle millions of requests across global deployments
• Implement complex business logic for CRM functionalities including contact management, relationship mapping, and business intelligence
• Work with Azure SQL Server databases using the Yeti.SQL multi-tenant platform with elastic pools and cross-region replication
• Design and implement event-driven architectures using Azure Service Bus, Event Grid, and the EventBroker system
• Architect and deploy scalable solutions on Azure Kubernetes Service (AKS) with container orchestration
• Leverage Azure PaaS services: Azure Functions, Application Gateway, Front Door, Key Vault, and App Configuration
• Implement Infrastructure as Code using ARM Templates, PowerShell, and Azure DevOps pipelines
• Design multi-region deployment strategies with automated failover and disaster recovery capabilities
• Ensure security best practices with Azure AD B2C, OAuth 2.0, RBAC, and encryption at rest/in transit
• Work independently across multiple product teams (Web, Office, Sync, Intelligence services) to deliver integrated solutions
• Take full ownership of services end-to-end - from architecture and development to deployment and production support
• Lead technical discussions and architectural decision-making with ADRs (Architecture Decision Records)
• Mentor other developers and promote best practices across the engineering organization
• Collaborate with Product Owners, DevOps engineers, and QA teams in an agile environment

Required Qualifications

Technical Skills

• 5+ years of backend development experience with C# and .NET Core/.NET 6+
• Strong hands-on frontend expertise in Angular for full-stack contribution
• Strong expertise in GraphQL (HotChocolate preferred) and RESTful API design
• Proven experience with Azure SQL Server, T-SQL, and database optimization techniques
• Deep knowledge of Microsoft Azure cloud services, particularly AKS, Azure Functions, Service Bus, and SQL Database
• Experience building and deploying containerized applications with Docker and Kubernetes
• Proficiency in Azure DevOps for CI/CD pipelines and Git-based workflows
• Strong understanding of microservices architecture, event-driven systems, and distributed computing patterns

Soft Skills & Work Style

• Proven ability to work independently with minimal supervision and take full ownership of complex projects
• Self-starter mentality with strong problem-solving skills and technical curiosity
• Excellent communication skills for collaborating with multiple stakeholders across different teams
• Comfortable with ambiguity - able to gather requirements and make technical decisions autonomously
• Accountability mindset - takes responsibility for quality, performance, and production stability
• Experience mentoring junior developers and leading technical initiatives

Nice to Have

• Background in CRM systems, SaaS multi-tenancy, or enterprise software
• Previous work with hybrid cloud architectures connecting on-premises and cloud systems

About the Tech Stack

• APIs: GraphQL , REST, OData
• Frontend: Angular 15+ (for full-stack opportunities)

If you have the required skillset and is ready to start soon, please share your resume to [e-mail] OR here

Please note to include the specific position you are applying for in the subject.