Senior Staff Software Engineer — Real-Time Distributed Systems (C#,.NET, gRPC)2Bridge Partners has been engaged in the search for a direct-hire Senior Staff Software Engineer with a strong background building real-time, message-based B2B or trading applications in C#,.NET, and gRPC.Our client is an established technology firm developing high-throughput, multi-tenant platforms used by institutional customers. The engineering environment is centered around real-time data distribution, low-latency messaging, high concurrency, and event-driven architectures. This role is ideal for engineers who want to influence platform design while remaining hands-on with complex distributed systems.Compensation: $200K–$300K base plus a significant discretionary performance-based bonus.What You'll Do:Architect, design, and deliver components of a highly scalable, distributed, real-time computing platform.Build and refine low-latency, message-driven services using gRPC and modern.NET.Develop reusable patterns, shared libraries, and framework-level abstractions.Lead performance tuning across messaging, compute, network, and storage layers.Own critical platform services supporting high-volume API and UI workloads.Collaborate with engineering leadership to shape architectural direction.Required Experience:10–15+ years of professional experience with extensive work in C# and.NET.Strong experience with gRPC and cloud-based service architectures.Expertise with distributed messaging and event-streaming technologies including Kafka, RabbitMQ, and Redis.Strong understanding of backend fundamentals including high-volume message processing, interprocess communication patterns, and database performance.Experience building multi-tenant, event-driven B2B systems requiring millisecond-level updates.Experience building frameworks or shared service layers.Strong interest in clean architecture and high engineering standards.Non-Technical Requirements:Strong analytical and architectural reasoning.High ownership mindset with strong follow-through and initiative.Ability to work independently and collaborate effectively.Strong communication skills.Education:Bachelor's degree or higher in Computer Science, Engineering, or related technical discipline preferred.Nice to Have:NYC metro candidates preferred for hybrid collaboration (flexible for exceptional candidates).Benefits:Medical, Dental, and Vision coverageRetirement plan (401k or IRA)Paid vacation, sick time, and holidaysLife insurance optionsShort- and long-term disability coverage