• Secured the product using Oauth2 and Authorization Code flow to obtain authorizedaccess to protected resources like web APIs.• Designed and implemented KYC API (Know Your Customer) for the product based on adecentralized identity server on the blockchain network.• Refactored and redesigned ORM and implemented Repository and Unit of Work patternsin the project using EF for Write and Dapper for Read operations.• Refactored and separated Read/Write connections of the database to increase andimprove performance.• Designed and implemented a Two Factor Authentication service for the operations suchas money withdrawal, etc on a decentralized identity server on the blockchain network.• Optimized integration tests environment to increase CI/CD performance.

• Designed and implemented a Dynamic Data Model module for a BPM application tosupport UML standards such as Aggregation, Association, and Composition (including thehierarchical self-relations) relations.• Designed and implemented a C# block using Blockly.js for a BPM application in whichcustomers be able to write custom methods and business rules of their needs. Createdynamic assemblies from C# blocks using Roslyn and execute the business rules usingMulti-Application Domain programming.• Optimized dependency injection library and software initialization operations anddecreased the startup time of the application from 10 minutes to around 20 seconds.• Unified software installation and update packages; Redesigned and refactored theinstallation/patches operation of the company and decreased the installation time from 4hours to around 20 minutes.

• Implemented a central monitoring service to monitor server resources, databaseperformance and software indexes for over thousand servers around the country fromthe company.• Designed and implemented CI operation using a Windows Service to build .NET C#,Database and Front-End projects parallelly from various TFS team projects and decreessoftware installation and update packages from 6 hours to 1 hour.• Implemented an ORM library for Neo4j graph database to simplify Read/Write withCypher queries in C#.• Developed and debugged the Electronic Letter module (ECE) in an automation systemwhich helped to decreasing bureaucracy in companies and organizations.

• Debugged and fixed reported bugs and issues.• Tuned SQL queries performance to store, retrieve and manipulate vast amounts of data.• Fixed data corruptions.• Converted data from legacy software for the new customers.