🛠 Tech Stack

💼 About This Role

You'll develop and maintain core card payment systems processing hundreds of thousands of daily transactions. You'll design new functionalities, integrate with external services, and ensure high performance and security. This role offers a remote-first model with only 2 days per month onsite in Warsaw.

🎯 What You'll Do

• Develop and maintain .NET applications in card payment domain
• Design and implement new functionalities according to business and regulatory requirements
• Integrate systems with external services via REST, SOAP, messaging queues
• Optimize performance, availability and security of applications
• Participate in SIT/UAT testing, code reviews, and technical documentation

📋 Requirements

• C# and .NET (Framework / Core) commercial experience
• ASP.NET Core, Angular and WebAPI experience
• SQL Server (T-SQL) and query optimization experience
• Unit testing with xUnit / NUnit
• System integrations (REST, SOAP, JSON, XML)

✨ Nice to Have

• Experience in card payments / payment processing domain
• Knowledge of Docker / Kubernetes
• Experience with high-availability or complex distributed systems