Open to opportunities

Zubair Mehmood

@zubairmehmood1

I build high-throughput .NET microservices and FinTech payment platforms for millions of users.

I've built high-scale .NET services for Constell Business Solutions' Piqla ride-hailing ecosystem, including User Management, Ride Booking, Wallet, and Notification modules. My event-driven microservices support live driver-passenger tracking workflows in Madagascar.

At Systems Limited, I architected Azure Functions and secure EDI and non-EDI pipelines for Castolin Visionet's global supply-chain ecosystem, earning Star of the Quarter in Q1 2024. Previously, I developed JazzQR payment functionality at AKSA-SDS, integrating MasterCard APIs and Pakistan's Raast Instant Payment Gateway for millions of nationwide transactions.

I focus on C#, .NET, scalable backend architecture, enterprise integrations, and production performance. I've improved database-pipeline performance by 30% through Entity Framework Core query restructuring and distributed caching, while delivering compliant payment modules and reliable cloud services.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Constell Business Solutions

Apr 2024 - Present (2 years 4 months)

Designed and engineered high-scale, event-driven microservices using .NET 8, MassTransit, and RabbitMQ for a ride-hailing ecosystem. Optimized database pipelines and introduced caching, achieving a 30% performance boost.

C#.NET 8+ASP.NET Core Microservices Event Driven Architecture Mass Transit RabbitMQ SQL Server MongoDB Azure Fintech Payment Integration

Consultant Products

Systems Limited

May 2023 - May 2024 (1 year)

Architected serverless workflows and cloud services using Azure Functions and .NET 8. Developed complex EDI and non-EDI pipelines for a global supply chain ecosystem, ensuring secure document transfers and zero-loss message queues.

C#.NET 8+Azure Functions Serverless EDI Supply Chain Management Cloud Services

Software Engineer

AKSA-SDS

Sep 2021 - Apr 2023 (1 year 7 months)

Programmed core functionality and integrations for JazzQR, a real-time digital payment platform. Integrated MasterCard APIs and Pakistan's Raast Instant Payment Gateway, and engineered backend logic for multi-tenant campaigns and automated transactions.

C#.NET ASP.NET Core Microservices Payment Integration SQL Server Financial Compliance

Software Engineer

Technocation (Pvt) Limited

Jan 2018 - Jul 2021 (3 years 6 months)

Managed full software development lifecycle responsibilities, translating business constraints into technical solutions for a live trading portal. Contributed feature-level optimizations to a management platform and built multi-tier commercial platforms.

C#.NET ASP.NET MVC SQL Server Stripe Integration SDLC