Open to opportunities

Umair Sarfraz

@umairsarfraz

.NET Developer | Expert in C#, ASP.NET Core, Angular, and Clean Architecture | Professional Experience With International Clients

Pakistan

Message

What I'm looking for

I seek roles where I can build secure, scalable full stack or backend systems using .NET Core and cloud platforms, with opportunities for architectural impact and team collaboration.

I am a results oriented .NET developer with 4+ years of experience building full-stack web applications, microservices, and cloud-native systems. I specialize in .NET Core, Angular, SignalR and delivering secure, scalable enterprise and SaaS solutions.

I've led backend services for an e-wallet platform, implemented robust authentication and transaction security layers, and integrated payment gateways and virtual card APIs. My work prioritizes data protection and seamless user experiences.

I have hands on experience delivering ERP, hospital management, booking platforms, and internal communication systems, often improving operational efficiency and user engagement through targeted feature development.

I thrive in collaborative engineering teams and as an independent contributor, focusing on clean architecture, SOLID principles, microservices, and cloud deployment (Azure/AWS) to produce reliable, maintainable software.

Experience

Work history, roles, and key accomplishments

Current

Senior .NET Developer

Current

Chip Curacao

May 2024 - Present (2 years 1 month)

Built backend services for Curaçao's first e-wallet, implemented secure authentication and transaction protections, integrated Virtual MasterCard via Girasol API and First Atlantic Commerce for wallet top-ups, and developed an agent top-up system.

C .NET Core Azure REST APIs SignalR Microservices SQL Server

Full Stack Developer

BarqBytes

Jan 2024 - Apr 2025 (1 year 3 months)

Independently developed a complete internal communication system using Angular, .NET Core, and SignalR, delivering real-time messaging to improve organizational communication.

SignalR TypeScript C HTML5 CSS3 SQL Server REST APIs Angular .NET Core

.NET Developer

JSS Devs

Aug 2023 - Dec 2023 (4 months)

Contributed to ASP.NET Core development and code audits for a shopping cart system, implemented authentication/authorization and user management, driving a 20% increase in user engagement.

ASP.NET Core Angular C Authentication Authorization SQL Server Code Review REST APIs

Full Stack Developer

ISOLS

Aug 2021 - Jul 2023 (1 year 11 months)

Led ERP development as part of a five-person team, implemented an enhanced payroll module reducing processing time by 20% and completed full ERP rollout, improving operational efficiency by 15%.