Senior Full Stack Software Engineer (Billing)

Extensive experience with .NET Core and C# for backend services Strong proficiency with Angular, TypeScript, and RxJS for front-end development Deep understanding of relational database design, optimization, and SQL Server Experience integrating with payment processors like Stripe, PayPal (Braintree), and Bitpay, and implementing their corresponding webhook handlers Knowledge of security best practices for handling sensitive payment information Demonstrated ability to design and implement RESTful APIs Collaborative and adaptable mindset Openness and authenticity combined with excellent communication skills Excitement and enthusiasm for open source and for better internet security

Design, develop, and maintain scalable billing and subscription management systems that process transactions for millions of global users Architect and implement secure payment processing flows across web applications, APIs, and database systems Lead the integration of multiple payment provider APIs and webhooks to support global payment methods Troubleshoot and resolve complex billing-related customer issues that require deep technical knowledge of our systems Optimize database queries and application performance to handle large transaction volumes