ARUN K

• Multi-tenant SaaS Security & Data Architecture
  Implemented multi-tenant security architecture using Oracle VPD for large-scale SaaS ERP and POS systems, ensuring secure tenant isolation, regulatory compliance, and scalable data access.
• Compliance-Driven Enterprise Web Applications
  Architected and built E-Invoice Plus, a Blazor Server–based .NET application, integrating ZATCA e-invoicing APIs to automate B2B/B2C invoice validation, submission, and compliance tracking.
• ERP Modernization & Data Migration
  Developed a custom ERP migration Web API implementing ETL workflows to migrate and normalize legacy ERP data into a modern ERP schema, ensuring data integrity and extensibility.
• High-Volume Transaction & Platform Integrations
  Implemented DT One recharge and bill payment integrations, building secure, fault-tolerant backend workflows and enabling reliable client-side API consumption for high-volume transaction platforms.
• Enterprise Product & Platform Development
  Designed and developed enterprise-grade platforms, including a cross-platform POS system (.NET MAUI), real-time token management system with analytics, and secure Windows applications, focusing on scalability, performance, and reliability.

• Designed and developed an Inventory ERP system (Akrivis) using C# and Windows Forms, supporting core inventory and operational workflows.
• Managed and optimized MS SQL Server databases, ensuring reliable data storage, query performance, and transactional integrity.
• Delivered feature enhancements, bug fixes, and system updates, improving application stability and usability.
• Collaborated with business stakeholders to translate requirements into functional ERP features aligned with operational needs.

Technologies:
C#, Windows Forms, MS SQL Server