Valentin Kosyanenko

Designed, developed, and supported enterprise financial applications with a focus on scalability and performance. Modernized legacy systems (Classic ASP, C++) to .NET Framework and Angular, established CI/CD pipelines. Implemented and maintained Web Services, WCF, and REST APIs to enable reliable integrations. Optimized SQL databases with stored procedures and functions to support high-volume data operations. Developed and customized financial and operational reports using Crystal Reports and XML/XSLT. Built APIs and services using .NET and NestJS, and delivered responsive Angular front-end components. Migrated applications to containerized environments with Docker to ensure high availability. Collaborated closely with business, support, QA teams to evolve solutions with changing requirements.

Designed, developed, and supported enterprise financial applications with a focus on scalability, performance, and maintainability. Modernized legacy systems (Classic ASP, C++) into .NET Framework and Angular, improving reliability and reducing technical debt. Built and maintained REST APIs, Web Services, and WCF services for internal and third-party integrations. Designed and optimized SQL Server databases, stored procedures, and functions to support high-volume financial operations. Developed financial and operational reports using Crystal Reports and XML/XSLT. Built backend services using .NET and NestJS and developed responsive Angular UI components. Migrated applications to containerized environments using Docker, improving deployment speed and system availability. Collaborated with product managers, QA, and support teams to deliver enhancements aligned with business requirements. Utilized GitHub, TFS, Jenkins, and CI/CD pipelines to streamline development and deployment processes

Supported and enhanced applications used for data exchange with NASA and the Canadian Space Agency. Migrated MS Access databases to SQL Server, improving performance and scalability. Developed C# applications using ADO.NET, LINQ, ASP.NET Web Services, and WCF. Designed SQL Server schemas, stored procedures, and reporting solutions. Collaborated with engineering teams to translate technical requirements into software solutions.