Nasir K.
Full Stack .NET Engineer | AI Integration | Legacy Modernization | LLM
Hey — I'm Nasir. I've spent the last 𝟭𝟮+ 𝘆𝗲𝗮𝗿𝘀 building full stack web applications with C#, .NET Core, Angular, React, and SQL Server. Not side projects — real production systems used by millions of people, Fortune 500 law firms, US government agencies, and healthcare providers. Right now, I'm the Technical Lead on a US government project for the 𝗢𝗳𝗳𝗶𝗰𝗲 𝗼𝗳 𝗦𝘂𝗽𝗲𝗿𝗶𝗻𝘁𝗲𝗻𝗱𝗲𝗻𝘁 𝗼𝗳 𝗣𝘂𝗯𝗹𝗶𝗰 𝗜𝗻𝘀𝘁𝗿𝘂𝗰𝘁𝗶𝗼𝗻 (𝗢𝗦𝗣𝗜) in Washington State. I'm rebuilding their statewide 𝗧𝗲𝗮𝗰𝗵𝗲𝗿 𝗮𝗻𝗱 𝗣𝗿𝗶𝗻𝗰𝗶𝗽𝗮𝗹 𝗘𝘃𝗮𝗹𝘂𝗮𝘁𝗶𝗼𝗻 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺 (𝗧𝗣𝗘𝗣) — a system that serves 295 school districts and over one million students. I 𝗮𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁 .𝗡𝗘𝗧 𝗖𝗼𝗿𝗲 𝗪𝗲𝗯 𝗔𝗣𝗜𝘀, build React-based front-end modules for educator dashboards, optimize SQL Server queries for district-level reporting, and manage Docker + AWS deployments with full CI/CD pipelines. Before OSPI, I spent a year building 𝗛𝗜𝗣𝗔𝗔-𝗰𝗼𝗺𝗽𝗹𝗶𝗮𝗻𝘁 𝗵𝗲𝗮𝗹𝘁𝗵𝗰𝗮𝗿𝗲 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 at Providertech — real-time two-way patient messaging, multi-tenant appointment management, survey systems, and test result dissemination. I built a modular UI Components Library with WAI-ARIA accessibility standards, worked with Azure for secure data storage and CDN integration, and implemented FHIR and HL7 healthcare interoperability standards using SignalR for real-time communication. I also worked as a Software Engineering Consultant at Vinson & Elkins LLP — one of the largest and most 𝗽𝗿𝗲𝘀𝘁𝗶𝗴𝗶𝗼𝘂𝘀 𝗹𝗮𝘄 𝗳𝗶𝗿𝗺𝘀 in the world. I built and modernized multiple applications across their tech stack, working with Angular, Vue.js, ASP.NET Core, Classic VB, and SQL Server. I enhanced legacy systems, built new project modules with Angular Graph for data visualization, and delivered across both modern and legacy codebases. At Namfus in Berlin, Germany, I served as Team Lead — managing a team of 3 developers building 𝗮𝗻 𝗔𝗜-𝗽𝗼𝘄𝗲𝗿𝗲𝗱 𝗲𝗱𝘂𝗰𝗮𝘁𝗶𝗼𝗻 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺 for the German school system. I designed the architecture using CQRS and Mediatr patterns, integrated the ChatGPT API to enable AI-driven Socratic learning interactions, and delivered the entire Namfus Education System on time while working remotely with the German client. As Project Lead at Excellence Delivered, I managed a team of 6 developers building Zorbis — a 𝗰𝗼𝗺𝗽𝗿𝗲𝗵𝗲𝗻𝘀𝗶𝘃𝗲 𝘀𝗼𝗹𝗮𝗿 𝗲𝗻𝗲𝗿𝗴𝘆 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺 automating residential solar panel installation across the US, from lead generation to financing. I integrated Facebook API for lead sourcing, Salesforce for CRM, and built the full stack with Angular 8, ASP.NET Core 3.1, Dapper, and SQL Server. On Upwork alone, I've logged 8,300+ hours across 16 completed jobs — every single one rated 5.0 stars. My longest engagement was 3+ years full-time (2,165 hours) with one client. I don't do quick gigs and vanish. I embed into your team, learn your business, and stay as long as you need me. Here's what I work with daily: → 𝗕𝗮𝗰𝗸𝗲𝗻𝗱: C# · ASP.NET Core Web API · ASP.NET MVC · Entity Framework Core · Dapper · ADO.NET · REST APIs · Microservices · Identity Server · SignalR · FHIR · HL7 → 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱: Angular 17+ · React · TypeScript · JavaScript · Vue.js · Tailwind CSS · Bootstrap · HTML5 · CSS3 · Angular Material · DevExtreme · Responsive Web Design → 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲: SQL Server · PostgreSQL · Database Design · Query Performance Tuning · Stored Procedures · Database Optimization → 𝗖𝗹𝗼𝘂𝗱 & 𝗗𝗲𝘃𝗢𝗽𝘀: Docker · Docker Compose · AWS (EC2, S3, RDS, Lambda, CloudFront) · Azure (App Service, Blob Storage, Azure SQL, CDN) · CI/CD Pipelines · GitHub Actions · Azure DevOps → 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲: Clean Architecture · CQRS · Mediator Pattern · Repository Pattern · SOLID Principles · Domain-Driven Design · Dependency Injection · Onion Architecture → 𝗔𝗜 & 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀: ChatGPT API · OpenAI · Salesforce Integration · Facebook API · Third-Party API Integration → 𝗧𝗲𝘀𝘁𝗶𝗻𝗴: xUnit · NUnit · Jest · Unit Testing · Integration Testing · Code Reviews · SonarQube 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 𝗜'𝘃𝗲 𝘀𝗵𝗶𝗽𝗽𝗲𝗱 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻 𝗰𝗼𝗱𝗲 𝗶𝗻: US Government, Healthcare (HIPAA/FHIR/HL7), Legal (Am Law 100), EdTech & E-Learning, Finance & Leasing, Solar Energy & CleanTech, and Enterprise SaaS. I've led teams of up to 15 developers as Project Lead — handling architecture decisions, sprint planning, code reviews, mentoring, and direct client communication. Whether you need a hands-on senior full stack developer, a technical lead to own your product, or someone to modernize a legacy system — I've done all three, multiple times. 100% Job Success Score · Top Rated Plus · $100K+ Earned · 8,300+ Hours · All 5.0 Stars I respond within hours, write clean and maintainable code, and communicate clearly without you having to chase me. Available 30+ hrs/week. Open to contract-to-hire. Flexible with US and European time zones.
Earnings and projects
An estimate from an earlier read
Last 6 months: $6.1k
Billed in all: $198,992$199k
$1.2k in the last 6 months
Across 23 contracts
Earnings, last 30 days
No reading in this range. Dotted: longer than usual between two readings. Hatched: over two weeks without one.
Skill rankings: Top 12% in Angular
Ranked by MRR among everyone on Upwork with the skill.
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