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 qualified 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 [email protected] OR here

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

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📌 Back End Developer (Ontario)
🏢 Appfabs Incorporation
📍 Ontario