Senior / Middle .NET Developer (E-commerce Marketplace)

Join a team building a large-scale marketplace platform used by millions of customers worldwide. The customer is a leading international marketplace specializing in pet products, operating a large-scale digital commerce ecosystem with millions of users and extensive product catalogs. The project focuses on development and optimization of a high-load e-commerce marketplace platform supporting catalogs, pricing, inventory, suppliers, and operational services. Technologies include .NET Framework 4.8, C#, MSMQ, WCF, SQL Server, NCache, distributed systems, and event-driven architecture.

• 4+ years of commercial software development experience with .NET and C#
• Familiarity with .NET Framework 4.8
• Solid understanding of OOP principles, system design, and software architecture
• Hands-on experience with MSMQ and WCF or similar technologies
• Good SQL Server knowledge including relational database design, query optimization, indexing, and T-SQL
• Experience working with distributed caching solutions such as NCache or similar tools
• Understanding of distributed systems and event-driven architecture principles
• Experience with unit, integration, and performance testing
• Familiarity with non-functional requirements including scalability, security, high availability, and performance optimization
• At least Upper-Intermediate English level

• Design, develop, and maintain robust backend solutions using .NET Framework 4.8 and C#
• Take ownership of features throughout the full development lifecycle, from requirements analysis to production deployment
• Develop clean, maintainable, scalable, and well-tested code following engineering best practices
• Support, optimize, and troubleshoot distributed messaging and service-oriented systems built with MSMQ and WCF
• Design and optimize SQL Server database structures, queries, indexes, and stored procedures
• Implement and maintain distributed caching solutions using NCache or similar technologies
• Participate in architectural discussions focused on scalability, reliability, and system performance
• Collaborate closely with developers, QA engineers, DevOps specialists, and product stakeholders
• Contribute to system monitoring, troubleshooting, and production issue resolution
• Ensure high standards of application performance, security, and maintainability