Open to opportunities

Faseeh Ullah Jafar

@faseehullahjafar

Senior full-stack engineer modernizing high-load systems with .NET event-driven microservices and performance-focused architecture.

Pakistan

Message

What I'm looking for

I’m looking for a role where I can own end-to-end features and modernize high-load .NET systems—using event-driven microservices, strong observability, and performance tuning—while leading teams and mentoring others. I’m open to remote and relocation.

I’m a Senior Full-Stack Engineer with 5+ years modernizing legacy architectures and recovering performance in complex, high-load systems across healthcare, EMR, fintech, and retail. I specialize in .NET8, event-driven microservices, and distributed patterns including Saga (Choreography & Orchestration).

Recently, I led a .NET8 enterprise portal with deep query optimization, Redis caching, and observability improvements—dramatically reducing response times and deployment friction. I own end-to-end features, translate fuzzy requirements into estimable, shippable work, and mentor engineers through code reviews and pair programming.

Across my roles, I’ve optimized databases with SolarWinds DPA and improved system visibility with Dynatrace, while building scalable solutions on Azure services like Service Bus, Functions, App Service, CosmosDB, and Key Vault. I’ve also driven modernization through CQRS, CQRS/microservices, CQRS-aligned design, and test-first practices to strengthen stability during production growth.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Horizon IT Solutions

Oct 2025 - Present (8 months)

Architected and owned a .NET 8 review-and-approval portal consolidating data from 5+ upstream systems, streamlining workflows for 17+ reviewers across 5+ teams. Built event-driven pricing/invoicing/approval processing with Azure Service Bus, cutting worst-case retailer screen response times from 3+ minutes to 40 seconds under load and reducing deployment friction (27 to 15 minutes).

.NET 8+ASP.NET Core Azure Service Bus Dynatrace Azure DevOps Performance Optimization

Software Engineer II

Devsinc

Jul 2023 - Oct 2025 (2 years 3 months)

Led full migration of a legacy Java application to .NET 8 with a React frontend for a fintech client, introducing CQRS and microservices to improve scalability and security. Integrated major EMR systems (Redox, Athena, Epic, eCW), secured healthcare data with Azure Key Vault and ADB2C, and improved performance by reducing worst-screen response times from 4 seconds to 300 ms and cutting manual port

.NET 8+Microservices CQRS Redis Angular

Full Stack Developer

Zentech Solutions

Jan 2021 - Jun 2023 (2 years 5 months)

Built an Order Management System from scratch using Angular 14+ and .NET 6 on Azure, replacing manual PDF/email workflows and improving operational throughput by ~25%. Delivered an admin portal unifying inventory/repairs/customer history, implemented a .NET 6 JSON merge tool to prevent configuration overwrites (reducing incidents by ~15%), and established unit/integration testing with xUnit/NUnit.

Angular .NET 5 6 ASP.NET Core Azure DevOps SQL Server xUnit Razor Pages API Development