Waqar Qasim

As part of a staff augmentation program, I was outsourced to a Payment Gateway company, where I contributed to the integration and optimization of financial systems. My responsibilities included:

• PayPal Integration: Spearheaded the integration of PayPal into existing systems, improving transaction efficiency and reliability.
• Blazor Development: Designed and optimized web applications using Blazor, enhancing UI responsiveness and user experience.
• Process Automation: Automated workflows using Azure Queue Storage and Azure Functions to reduce manual intervention and streamline operations.
• Application Performance Monitoring: Implemented Azure Application Insights for performance monitoring and diagnostics, ensuring system reliability.
• Identity & Access Management: Configured Azure Entra ID for secure authentication and identity management.
• Database Optimization: Worked with Azure Database Storage and Azure PostgreSQL, optimizing queries and ensuring robust data performance.
• Financial Reporting Application: Developed a reporting platform to provide clients with detailed transaction insights, enhancing financial transparency.
• System Upgrades: Migrated multiple applications to .NET 8, leveraging the latest framework capabilities for improved performance.
• Database Efficiency Improvements: Optimized SQL queries and transitioned from EF Core to Dapper for better data processing.
• Unit Testing & Mocking: Configured xUnit unit tests, using Moq to simulate database transactions and objects, ensuring reliability.
• CI/CD Implementation: Set up and maintained Azure DevOps CI/CD pipelines, automating deployments and improving development workflows.
• Code Reviews & Collaboration: Actively participated in code reviews, ensuring high-quality, maintainable code and fostering team collaboration.

As part of employee augmentation program, I contributed to the development and optimization of key enterprise applications, including a Learning Management System (LMS) designed to facilitate employee up skilling and career progression. My key responsibilities included:

• Learning Management System Development: Designed and implemented an in-house LMS, enabling role-based promotions and skill tracking to support employee growth.
• Technology Stack: Developed the back-end using .NET Core and front-end with React, leveraging Azure App Services for deployment and Azure DevOps for CI/CD automation.
• Secure Authentication & Access Management: Configured Azure Active Directory to ensure secure access and user management within the system.
• Payment Gateway Application Support: Assisted in supporting and optimizing payment gateway applications as part of the employee augmentation program.
• System Upgrades & Enhancements: Migrated multiple applications to .NET 8, enhancing performance and reliability.
• Deployment & Framework Optimization: Managed application deployments using Octopus and MVC.NET, integrating advanced functionality with Knockout JS.
• Front-End Innovation: Led a React-based proof-of-concept (POC) to modernize UI design and enhance user experience.

I contributed to the development of cutting-edge fin-tech solutions by designing and optimizing high-performance systems and applications. Key responsibilities included:

• Data Pipeline Development: Built high-performance data pipelines using Scala and Apache Spark on AWS Data bricks to support fin-tech solutions.
• Serverless Computing: Created .NET-based AWS Lambda functions integrated with SQS and S3, enhancing cloud processing and scalability.
• Desktop and Web Applications: Improved and added features to WPF desktop applications and Angular-based web applications.
• Package Management: Developed and maintained NuGet packages to optimize internal services and streamline AWS Lambda function integration.
• SQL Optimization: Designed and implemented optimized SQL scripts to backfill and aggregate data, ensuring data integrity and performance.
• Team Collaboration: Worked with cross-functional teams to coordinate and execute multiple production rollouts successfully.
• Coordinated with other engineers to evaluate and improve software and hardware interfaces.

• Developed and maintained a Retail Management System using MVC5 and Entity Framework, ensuring efficient inventory tracking and sales processing.
• Built a multi-tenant accounting application compliant with UK HMRC, using microservices architecture and Angular 7 for front-end.
• Implemented Identity Server for authentication, supporting external sign-ins across multiple tenants.
• Designed scalable Web APIs in .NET Core 3, leveraging Ocelot Gateway for microservice routing.
• Automated invoice processing using Google OCR, enabling dynamic invoice generation post-upload.
• Optimized SQL queries, ensuring efficient data aggregation and backfilling.
• Managed deployments using IIS, maintaining stability across multi-tenant environments.
• Integrated NLog for logging, NUnit for unit testing, and Fluent API Validation for data integrity.
• Generated reports and invoices using Rotativa, and documented APIs via Swagger for streamlined integration.

• Contributed to the billing module of a health network system by integrating a new web portal with an existing desktop application, streamlining billing workflows.
• Designed the front-end using jQuery and Bootstrap, ensuring a responsive and user-friendly interface.
• Utilized MVC4, Entity Framework, Unit of Work, and Repository Pattern to implement scalable and maintainable back-end solutions.
• Created Windows Services to automate data updates and aggregate information for comprehensive reporting.