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Faseeh Ullah Jafar
Open to opportunitiesSenior Software Engineer
Senior full-stack engineer modernizing high-load systems with .NET event-driven microservices and performance-focused architecture.
PakistanSenior Software Engineer at Horizon IT Solutions
About
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
Senior Software Engineer
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 CoreAzure Service BusDynatraceAzure DevOpsPerformance Optimization
Software Engineer II
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+MicroservicesCQRSRedis
Education
National University of Computer and Emerging Sciences (FAST-NUCES)
Earned a Bachelor of Science in Computer Science from National University of Computer and Emerging Sciences (FAST-NUCES).
National University of Computer and Emerging Sciences (FAST-NUCES)
Earned a Bachelor of Science in Computer Science from National University of Computer and Emerging Sciences (FAST-NUCES).