C# Senior Backend Engineer for advanced Fintech product

Pinnakl is a SaaS company disrupting hedge fund software for 8 years with 100+ Wall Street clients. We're hiring a C# Senior Backend Engineer to build next-generation stock trading platform backend services. You'll work on real-time trading systems for sophisticated funds, focusing on schema design, API endpoints, and production support.

• Build and maintain backend services powering a large, data-heavy enterprise platform
• Implement personalized news notifications feature with subscription management and data provider connectivity
• Optimize performance of stock trading services through profiling and advanced caching techniques
• Enhance system observability across infrastructure with logging, tracing, and monitoring frameworks
• Integrate AI technologies for risk calculation and compliance control
• Modernize CRM system using microservice architecture based on Clean Architecture principles
• Write API endpoints, schemas, and data-handling functions
• Advise on product roadmap feasibility and implementation timelines
• Optimize applications for performance, accessibility, and security

• 5+ years backend experience in C# / .NET
• Strong ASP.NET Core experience
• Unit testing in .NET
• SQL knowledge
• SOLID principles understanding
• Microservice architecture experience
• Nice to have: Clean Architecture principles, message buses (Kafka, Azure Service Bus), caching (Redis)

Schedule: Full-time, 45-50 hours per week, most work wrapping by 7 PM local time, no side-freelancing

Benefits: Work with senior engineers, ship meaningful production systems used daily by Wall Street, direct impact on financial infrastructure, compensation grows with company, long-term team member stability

Expectations: Ownership over tickets, delivery-focused culture, AI-assisted development expected, critical thinking and proactive problem-solving required