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May 19, 2026

Senior Software Engineer C# (AI-driven systems) | Senior Rust Engineer (AI-driven systems)

Senior • Hybrid

35,000 - 45,000 PLN

Warsaw, Poland

Senior Software Engineer C# (AI-driven systems)

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.


Key Responsibilities

  • 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

  • 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



2. Senior Rust Engineer (AI-driven systems)

We are looking for an experienced Rust Engineer who combines strong systems engineering skills with a modern, AI-supported development approach, and is open to working in a multi-language environment that includes C#/.NET.

This role focuses on building and scaling a high-performance trade management platform processing large volumes of data in distributed, event-driven architectures. The environment is highly performance-focused, with strong requirements around scalability, reliability, and low-latency processing.


Key Responsibilities

  • Develop and optimize high-performance backend systems in Rust

  • Design and maintain scalable distributed services

  • Collaborate with C# engineers and contribute to cross-stack system design

  • Use AI tools to accelerate development, testing, and debugging

  • Own solutions end-to-end, from architecture to production

  • Improve system performance, reliability, and cloud efficiency


Requirements

  • 5+ years of experience in software engineering

  • Strong Rust experience in production systems

  • Strong fundamentals in system design, concurrency, and performance

  • Willingness to work with C#/.NET in a hybrid 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 

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