[Skip to main content](#main-content) [OpenNash Jobs](https://jobs.opennash.com/) [Hiring report](/reports/hiring/) · [All Tata Consultancy Services jobs](https://jobs.opennash.com/companies/tata-consultancy-services/) · [Search jobs](/search/) Tata Consultancy Services · Visakhapatnam # AS400 Visakhapatnam IT & Infrastructure Last seen on Tata Consultancy Services’s official careers site on August 1, 2026; it may have closed since. [Apply on Tata Consultancy Services’s careers site →](https://ibegin.tcsapps.com/candidate/next/en-IN/jobs/418277J) [OpenNash Jobs](https://jobs.opennash.com/) / [Tata Consultancy Services](https://jobs.opennash.com/companies/tata-consultancy-services/) / AS400 ## Job description ### Application Development Build and maintain batch programs, interactive screens, APIs, and service programs. ### Requirement Analysis & Design Collaborate with business analysts and telecom domain experts to understand requirements and convert functional requirements into technical specifications. ### System Maintenance & Support Debug and troubleshoot production issues, perform root cause analysis, and implement permanent solutions. ### Database & Performance Optimization Work extensively with DB2/400 queries, indexing, performance tuning, and optimize end-to-end batch processes and program performance. ### Collaboration & Documentation Coordinate with QA, support teams, and cross-functional telecom teams, prepare technical documents, test scenarios, and deployment artifacts. The ideal candidate should have hands-on experience in RPG programming, CL, DB2/400, and application enhancements within enterprise environments. A Bachelor's degree in Engineering, Computer Science, Information Technology, or equivalent is preferre d