Intermediate .NET Backend Developer

Job summary

Develop and maintain ASP.NET Core backend services, improve an established codebase, and support APIs, data pipelines, reporting, and database performance. Participate in testing, code reviews, deployments, and service integrations while helping maintain production systems.

Job details

Home › Careers › Intermediate .NET Backend Developer Toronto Intermediate .NET Backend Developer Posted on February 12, 2026 RX Music is a leader in custom music programming and background music services, delivering curated soundtracks for global hospitality, retail, and lifestyle brands. We believe music is more than background noise, it’s a core part of a space’s identity and customer experience. Our systems handle high volume API traffic, ingest content from multiple external providers, support multi platform media playback products and a proprietary media content management solution. This is not a greenfield environment. You will work within a mature production system that processes real commercial data where reliability, accuracy, and performance matter. The Junior Software Developer will be involved in all areas of development from design to development to testing and product documentation. Core Responsibilities Develop and maintain backend services using ASP.NET Core Extend and improve functionality within a large existing codebase Write and optimize SQL Server queries, stored procedures, and data migrations Work with message-based architecture for inter-service communication Support content ingestion pipelines from external providers Assist with royalty reporting logic and provider specific rules Participate in code reviews, testing, and deployment of backend services Assist with database maintenance, performance tuning, and infrastructure support Collaborate with the development team on cross-component features and integrations Required Skills 3+ years of professional experience with C# and .NET (Core/.NET 6+) Experience building and consuming RESTful APIs with ASP.NET Core Solid relational database skills (MSSQL and/or PGSQL) writing queries, understanding execution plans, working with stored procedures, relational database design and data modeling Familiarity with dependency injection, middleware, and common .NET patterns Comfortable working with Git and standard development workflows Ability to read and work within a large existing codebase Ability to debug issues across services and trace data through pipelines Nice To Have Background in media processing, content management, or digital audio/video platforms Experience with distributed actor frameworks (Akka, Orleans, or similar) Experience with CI/CD pipelines and automated build systems Experience with background job processing frameworks Familiarity with Docker and containerized deployments Familiarity with message brokers and pub/sub patterns Exposure to micro-ORMs (Dapper or similar) Technology Stack Languages: C#, SQL Backend: ASP.NET Core Data: Relational Databases Infrastructure: Docker, CI/CD pipelines, Git Messaging: Message brokers Protocols: REST, industry-standard content formats What To Expect You will be joining a small, experienced team maintaining a large, mature codebase The work spans API services, data processing, report generation, database work, and service maintenance You will work closely with the Director of Development for guidance and code review during onboarding Over time, the role is expected to take ownership of specific services or subsystems What This Role Is Not Not a senior or staff-level position Not focused on buzzwords or experimental technology Not a short-term contract role Apply via Email Tweet Share Pin Share

What you’ll do

Develop and maintain ASP.NET Core backend services, improve an established codebase, and support APIs, data pipelines, reporting, and database performance. Participate in testing, code reviews, deployments, and service integrations while helping maintain production systems.

Requirements

Requires at least three years of professional C# and .NET experience, experience building and consuming RESTful APIs, and strong relational database skills. Candidates should be comfortable with Git, common .NET patterns, large codebases, and debugging issues across services and data pipelines.

Listed skills

• CI/CD · Preferred
• PostgreSQL · Preferred
• Docker · Preferred
• .NET · Preferred
• C++ · Preferred
• Git · Preferred

Other relevant skills

Identified from the job description. Confirm important requirements above.

• C#
• .NET
• ASP.NET Core
• RESTful APIs
• SQL Server
• PostgreSQL
• Relational Database Design
• SQL Query Optimization
• Dependency Injection
• Git
• Message-Based Architecture
• Content Ingestion
• Debugging
• Code Reviews
• Docker
• CI/CD

Job areas

• Software
• Technology
• Creative & Media

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