SeniorSoftwareEngineer,Backend(Payments)

## Accountabilities Design, build, test, deploy, and monitor scalable backend services supporting core payment and financial infrastructure in production environments. Contribute to the evolution and maintenance of a large-scale payments platform serving millions of users across multiple markets. Develop and maintain Ruby-based backend systems, ensuring performance, reliability, and scalability of core services. Translate product and business requirements into robust, scalable, and maintainable technical solutions. Lead end-to-end technical initiatives, from design and architecture discussions through to implementation and production delivery. Improve system reliability, observability, security, and performance across distributed payment services. Collaborate with Product, Engineering, and cross-functional teams to solve complex business and technical challenges. Participate in code reviews, promote engineering best practices, and mentor other engineers to elevate team capability. Drive alignment and communication across distributed international engineering teams. Requirements Strong experience building and operating backend systems in production at scale. Solid expertise in software design, distributed systems, and scalable backend architectures. Hands-on experience with Ruby or similar backend languages in production environments. Experience working with relational and non-relational databases in high-availability systems. Familiarity with event-driven architectures and messaging systems (e.g., Kafka, RabbitMQ, or equivalent). Ability to take ownership of complex technical problems from discovery through delivery. Strong analytical thinking, problem-solving skills, and attention to system reliability and performance. Product mindset with the ability to connect technical decisions to business impact. Excellent communication skills and ability to collaborate in a global, distributed environment. Advanced English proficiency (C1–C2 level) required. Experience in fin