Senior Backend Engineer – C# / .NET (Capital Markets)
📍 Location: Toronto (Hybrid)
💼 Experience: 10+ Years
💻 Technology: C#, .NET Core, Distributed Systems
🚀 Role Overview
We are looking for a Senior Backend Engineer with deep expertise in C# and modern .NET to design, build, and support high-performance distributed systems in a Capital Markets / FinTech environment.
This is a senior-level, hands-on role for someone who understands backend architecture, scalable systems, and financial market data, and is passionate about delivering robust, production-grade solutions.
🧠 Key Responsibilities
• Design, develop, and maintain resilient, distributed backend systems using C# and modern .NET
• Own backend architecture and system design, applying industry-standard design patterns and architectural patterns
• Build scalable services handling large volumes of financial and market data
• Ensure high-quality, maintainable, and well-tested code
• Collaborate closely with business, trading, and risk teams to support mission-critical systems
• Participate in performance tuning, troubleshooting, and production support as needed
• Support business priorities and deliver consistently under tight deadlines
✅ Must-Have Qualifications
• 10+ years of professional software development experience
• Strong expertise in C# and .NET (.NET Core / .NET 5 / .NET 6) with solid .NET Framework background
• Deep understanding of multithreading, concurrency, and asynchronous programming
• Proven experience designing and implementing distributed systems
• Strong knowledge of backend system design and architecture
• Experience working with large datasets and high-throughput systems
• Undergraduate degree (or higher) in Computer Science, Engineering, Finance, or a related field
• Strong problem-solving skills and a delivery-focused mindset
🌟 Nice-to-Have Skills
• Functional knowledge of Python
• Experience in Capital Markets or FinTech
• Exposure to Risk Systems and Pricing Model Integration
• Strong interpersonal and collaboration skills
• Passion for technology and large-scale system design
⭐ Major Plus / Preferred Experience
• Capital Markets domain experience (strongly preferred)
• Knowledge of Equity Derivatives, including pricing and risk
• Hands-on experience integrating with market data vendors such as:
• Bloomberg
• Markit
• Ultumus
• Totem (or similar)
• Understanding of market data concepts:
• ETF & Index composition
• Volatility surfaces
• Dividends
• Correlations
• Practical experience with:
• Distributed messaging platforms
• Unix/Linux and Windows servers
• Docker and Kubernetes
