Senior Software Engineer C# AI-driven systems, WARSZAWA

• 5+ years of experience in software engineering
• Strong C#/.NET development experience (production systems)
• Strong fundamentals in system design, concurrency, and performance
• Willingness to work with Rust in a production environment
• Experience with distributed systems and cloud platforms (preferably AWS)
• Practical use of AI tools in development workflows

Nice to have

• Experience with messaging systems (Kafka, RabbitMQ, etc.)
• Exposure to financial systems or trading environments

We are looking for an experienced Software Engineer with strong expertise in C#/.NET and a solid understanding of system design, who is open to working in a modern, multi-language environment that includes Rust.

This role focuses on building and scaling a high-performance trade management platform processing large volumes of data in distributed, event-driven systems. You will work in a highly performance-driven environment with a strong emphasis on scalability, reliability, and engineering excellence.

,[Develop and optimize high-performance backend systems in C#/.NET, Design and maintain scalable distributed services, Collaborate with Rust engineers and contribute to cross-language system development, Use AI tools to accelerate development, testing, and debugging, Own solutions end-to-end, from design through to production, Improve system performance, reliability, and cloud efficiency] Requirements: C#, .NET, System design, Rust, AI, Kafka, RabbitMQ, Financial systems, Trading environments Additionally: Private healthcare, Sport subscription, Foreign languages classes, Life Insurance, Cafeteria system.