Software Engineer .NET Developer /Tango

Who We Are At Kyndryl, we run and reimagine the mission-critical technology systems that drive advantage for the world's leading businesses. We are at the heart of progress; with proven expertise and a continuous flow of AI-powered insight, enabling smarter decisions, faster innovation, and a lasting competitive edge. For our people-Kyndryls-that means doing purposeful work that powers human progress. Join us and experience a flexible, supportive environment where your well-being is prioritized and your potential can thrive. The Role The Software Engineer will support, maintain and enhance business-critical applications within the Tango application portfolio. The role combines hands-on .NET development with production support, technical troubleshooting and continuous improvement in a managed application services environment. KEY RESPONSIBILITIES • Provide L3 support for Tango-related applications and associated .NET components in production environments. • Analyze and resolve incidents, defects and performance issues; complete root cause analysis and implement sustainable corrective actions. • Develop, enhance, test and maintain applications using C#, .NET Framework, .NET Core and .NET 6+. • Build and maintain ASP.NET MVC, ASP.NET Core and RESTful Web API services. • Support Windows Services, background processing and scheduled application components. • Develop and optimize SQL Server queries, stored procedures, views and database objects. • Participate in BAU support, application enhancements, release activities and change implementation. • Follow ITSM processes for incident, problem and change management using ServiceNow or an equivalent platform. • Maintain technical documentation, support procedures and knowledge articles, and collaborate with cross-functional and global delivery teams. Who You Are REQUIRED TECHNICAL AND FUNCTIONAL SKILLS • Strong proficiency in C# and the Microsoft .NET ecosystem, including Visual Studio and/or Visual Studio Code. • Hands-on experience with .NET Framework, .NET Core and .NET 6+. • Experience developing ASP.NET MVC, ASP.NET Core and RESTful Web APIs. • Solid understanding of object-oriented programming and software design principles. • Experience with Microsoft SQL Server, T-SQL, stored procedures, views, relational databases and performance tuning. • Working knowledge of XML and JSON data formats. • Strong production support, troubleshooting and root cause analysis skills. • Experience working with ITSM tools such as ServiceNow or equivalent. PREFERRED SKILLS • Experience with HTML5, CSS3, JavaScript and JavaScript/TypeScript frameworks such as Angular or React. • Exposure to ETL and reporting tools, including SSIS and SSRS. • Familiarity with CI/CD pipelines, for example Jenkins or Azure DevOps, and source-control practices. • Exposure to Docker, containerized deployments and IIS configuration/troubleshooting. • Basic knowledge of cloud platforms, including Azure, AWS or GCP. • Experience supporting the Tango application ecosystem or comparable enterprise application portfolios EXPERIENCE AND QUALIFICATIONS • Bachelor's degree in Computer Science, Information Technology, Engineering or a related discipline, or equivalent relevant experience. • Demonstrated experience in .NET software development and application support within a BAU and enhancement delivery model. • Ability to manage priorities, communicate clearly with technical and business stakeholders, and work effectively in a global delivery environment. LANGUAGES • Professional working proficiency in English, written and spoken. • Fluent Spanish, written and spoke Being You The "Kyn" in Kyndryl means kinship, which represents the strong bonds we have with each other, our customers and our communities. We focus on ensuring all Kyndryls feel included and we welcome people of all cultures, backgrounds, and experiences. Even if you don't meet every requirement, we encourage you to apply. We believe in growth, and we're excited to see w