Senior C# Back-end Developer

Were looking for an expert-level C# back-end developer to join a delivery team in Montreal. This is a pure back-end role focused on server-side and standalone desktop application development - candidates with primary experience in web frontend or full stack development are not the right fit for this position.

What youll do

• Develop refactor and optimize back-end server-side and standalone desktop application components
• Identify and resolve underperforming code to improve application efficiency and performance
• Write robust well-structured code with strong attention to multithreading data structures and algorithms
• Perform code reviews and contribute to cross-team tasks release management and regression checking
• Participate in testing efforts including applying TDD and BDD methodologies to new and existing codebases

What you bring

• 8 years of professional C# development experience in a back-end or standalone desktop application context
• Expert-level proficiency in C# and the Visual Studio environment
• Strong skills in multithreaded programming data structures algorithms SQL and application optimization
• Proven experience identifying detecting and refactoring underperforming code
• Hands-on exposure to technologies including SQL Server gRPC Hibernate WinForms WCF REST APIs and Swagger
• Deep understanding of programming concepts and genuine curiosity about how APIs and architectural choices work internally
• Eligibility for a mandatory background check

Nice to have

• Prior experience in finance trading or domain knowledge across asset classes rates FX fixed income or structured products
• Familiarity with TDD and BDD concepts and practical application in existing codebases
• French language proficiency

Work setup

• Montreal QC with up to 2 days remote per week after 3 months subject to manager discretion
• 6 month contract
• English required; French is a plus
• Quebec statutory holidays apply