Senior Intersysems CACHE Developer Develop and maintain applications using InterSystems Cache/IRIS and MUMPS. Design, develop, and support RESTful APIs and Web API integrations. Work on backend development using C# and .NET technologies. Optimize database performance, queries, and application workflows. Collaborate with business and technical teams to gather requirements and deliver solutions. Troubleshoot application issues and provide production support. Participate in code reviews, testing, d