At , we’re redefining how people use credit. We are the first interest-free and no-annual-fee credit card in Mexico, designed to simplify personal finances and give users complete control - all from a mobile app. With NOVACARD, users can access up to $200,000 MXN in credit, only pay when they use it, and manage everything digitally in under 5 minutes. Our mission is to empower people to make smarter financial decisions by offering flexibility, transparency, and the freedom they need to reach their goals. Simple finances, big goals. About the Role We're looking for a Senior .NET Developer to join our team working on enterprise CRM systems. You will be responsible for developing APIs, integrating with external and internal systems, designing databases, and optimizing system performance. This is a hands-on role with a strong focus on backend architecture, system scalability, and clean code. Key Responsibilities Develop and maintain APIs for integration with external and internal systems Support and enhance existing CRM solutions Design and optimize relational database structures Analyze software performance and optimize both backend code and database queries Contribute to software architecture and system design What you will get Opportunity to design scalable services and solutions Remote flexibility and a collaborative, innovation-driven environment Work with high-performing, cross-functional global teams fluent Russian, English – B2 level or higher Strong commercial experience with distributed systems in C# using Core Deep understanding of distributed systems patterns Experience with generic programming and writing reusable components Solid SQL skills — ability to write complex queries Hands-on experience integrating with external APIs (JSON-based) Commercial experience with Docker Solid grasp of SOLID principles, event delivery guarantees, and EDA (Event-Driven Architecture) Understanding of basic information security principles (network security, web app security) Experience in collaborative development using Git Nice-to-Have Skills Experience with Kubernetes (K8s) in production Experience with CI/CD pipeline configuration using Ansible, Terraform, etc. Exposure to DevOps practices and infrastructure as code Top 3 Core Technical Strengths We Expect Expertise in distributed system design patterns Hands-on experience with generic programming in C# Foundational understanding of information security principles