Senior C#/.NET Developer

Galent; Toronto; Hybrid; CAD 90,000 - 130,000; Full time

Job summary

Galent in Toronto, ON is seeking an experienced .NET engineer to design, develop, and maintain server-side components, RESTful APIs, and integrations in a hybrid work model (3–4 days onsite).

You will implement secure authentication, middleware, and observability, write tests, support CI/CD pipelines, and produce runbooks and API documentation while collaborating with product owners, architects, and QA to deliver features within sprints.

Qualifications

• 6+ years of hands-on experience in the listed skills.
• Proficient in C# / .NET and RESTful API design.
• Strong understanding of middleware, integrations, and observability.

Responsibilities

• Design, develop, and maintain server-side components with C# and .NET.
• Build RESTful APIs with secure authentication and versioning.
• Develop middleware to connect internal services with external systems.
• Implement integrations using synchronous and asynchronous patterns with resiliency.
• Write unit/integration tests and support CI/CD pipelines.
• Troubleshoot production issues and deliver performance improvements.
• Create and maintain API docs, configuration guides, and runbooks.
• Collaborate with product owners, architects, and QA to refine requirements.

Skills

C# / .NET

API design & development

Testing & CI/CD

Troubleshooting & performance

Collaboration & documentation

Tools

Relational databases

MongoDB

Redis

Job description

Location: Toronto, ON (Hybrid- 3/4 days onsite)

Required Qualifications:

• Overall 6+ years of hands on experience in below skills
• Nice To have Skills- Relational databases, MongoDB, Redis.
• Design, develop, and maintain server-side components using C# and .NET (Core/Framework) following clean architecture and SOLID principles.
• Build and maintain RESTful APIs (design, versioning, pagination, error handling, and documentation) and ensure secure authentication/authorization.
• Develop middleware and integration components to connect internal services with external systems (message formats, adapters, routing, transformation, and orchestration).
• Implement and consume integrations using common patterns (sync/async), ensuring resiliency (timeouts, retries, circuit breakers) and observability (logging, tracing, metrics).
• Write unit/integration tests and support automated CI/CD pipelines; ensure code quality through reviews and static analysis.
• Troubleshoot production issues, perform root-cause analysis, and deliver performance/reliability improvements.
• Collaborate with product owners, architects, and QA to refine requirements, estimate work, and deliver features within sprint timelines.
• Produce and maintain technical documentation for APIs, integrations, configuration, and runbooks.

We are an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, sexual orientation, or gender identity), national origin, citizenship status, age, disability, genetic information, protected veteran status, or any other characteristic protected by applicable law. https://www.e-verify.gov/sites/default/files/everify/posters/IER_RighttoWorkPoster.pdf