Prakash S.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

If your IBM i (AS400) or Mainframe system runs mission‑critical operations, you need modernization without risk I help organizations stabilize, modernize, and integrate legacy IBM i / Mainframe applications while preserving uptime, performance, and business logic. My approach focuses on incremental, low‑risk modernization—extending system life while enabling web, API, cloud, and AI‑driven innovation. With deep hands‑on experience across RPG, COBOL, Mainframe technologies, EDI integrations, and modern web stacks, I provide senior‑level ownership from assessment through production support. What I Bring IBM i / AS400: IBM i (AS400), iSeries, IBM Power Systems (V5R3–V7R5) — system modernization, application migration, performance optimization, and production stability. RPG & ILE: RPG Free, RPGLE, SQLRPGLE, RPG II–IV, CLLE, ILE — legacy refactoring, modularization, DB2 optimization, DDS‑to‑SQL migration. COBOL & Mainframe: COBOL, NetCOBOL, Fujitsu COBOL, CICS, JCL, DB2, VSAM — mainframe modernization, batch migration, performance tuning, controlled legacy transformation. Integration & Modernization: AS400 green‑screen to web (Profound UI, LANSA, SYNON, Rocket Aldon), APIs, EDI (ANSI X12, EDIFACT), ERP & Manhattan WMS integration, ESB, JSON, hybrid/cloud modernization, Angular & React frontends. AI‑Assisted Modernization: AI‑based code analysis, documentation, refactoring, anomaly detection, and batch/workflow automatio Services AS400 & Mainframe Modernization | RPG & COBOL Migration Green Screen to Web Conversion | EDI & API Integration DB2 & Data Migration | Production Support & Maintenance Skills & Technologies Languages: RPG, RPGLE, RPG Free, COBOL, NetCOBOL, JCL, SQL, Python, Java, PHP Databases: DB2/400, IBM Db2, VSAM, PostgreSQL, MS SQL Tools: Profound UI, LANSA, SYNON, Presto, Rocket Aldon, RDz, Eclipse Source Control: Aldon, Turnover, Implementer, Endevor, Git, SVN Platforms: OS/400, IBM i, AS400, IBM Power Systems Infor & JDE Integration: Experience integrating IBM i / AS400 systems with Infor (LN, M3) and JD Edwards (JDE)—supporting data migration, interface development, batch jobs, APIs, and EDI‑driven business workflows. Domains- Banking | Retail | Manufacturing | Insurance | Healthcare | Life Sciences | E‑Commerce | Defense If your IBM i / AS400 or Mainframe environment is critical to revenue, let’s modernize it strategically, with stability and measurable ROI. Click “Hire Me” or send an invite to discuss your project. Keywords IBM i Modernization | AS400 Modernization | RPG Modernization | RPG Free | RPGLE | COBOL Modernization | NetCOBOL | Fujitsu COBOL | Mainframe Modernization | Green Screen Modernization | IBM i Web Enablement | RPG to Java | RPG to .NET | DB2 Migration | ERP Integration | Manhattan WMS | EDI Integration | AI Legacy Modernization | IBM Power Systems | API Integration | Legacy System Transformation