Lead Software Engineer – C# .NET, WARSZAWA

• 5+ years of professional software engineering experience with proven technical leadership.
• Strong expertise in C#/.NET and distributed, service-oriented architectures.
• Good understanding of concurrent and high-performance programming.
• Experience designing scalable, resilient, and high-volume systems.
• Willingness and openness to working with Rust as part of the platform's ongoing technology evolution.
• Experience with AI-assisted software development and modern engineering practices.
• Knowledge of DevOps practices and tools such as Git, Jenkins, JIRA, or similar.
• Strong communication and stakeholder management skills.
• Experience mentoring developers or providing technical leadership.

Nice to Have

• Previous experience with Rust.
• Knowledge of AWS, Kafka, serverless, or cloud-native architectures.
• Experience with React or Angular.
• Familiarity with event-driven architectures.
• Experience in financial markets

About the Role

We are looking for an experienced Lead Software Engineer with strong expertise in C#/.NET to take technical ownership of high-volume, distributed systems supporting critical processes.

This is a hands-on leadership role combining software architecture and development with technical guidance and mentoring of a small engineering team. You will work closely with global technology and operations teams to expand and modernize the platform, while contributing to its ongoing evolution towards Rust.

,[Design and develop scalable, reliable, and high-performance distributed systems using C#/.NET., Remain hands-on with software development, technical design, and code reviews., Contribute to the modernization of the platform and migration from C#/.NET to Rust., Support the integration of new products and capabilities into the platform., Define technical standards, architecture principles, and development best practices., Leverage AI-assisted development tools to improve engineering productivity and delivery., Mentor engineers and provide technical guidance to a small team., Translate business requirements into effective technical solutions., Drive technical roadmaps, balancing short-term delivery with long-term platform scalability and reliability.] Requirements: C#, .NET, Rust, DevOps, Git, Jenkins, Jira, AWS, Kafka, React, Angular