Principal-led Microsoft .NET specialists
KARIM CodeCrafters engineers enterprise-grade cross-platform iOS & Android apps with .NET MAUI, modern web applications with .NET Blazor, macOS & Windows desktop software, and high-concurrency ASP.NET Core backends, architected by seasoned .NET specialists who ship to production, not to slide decks.
Core services
We design, build and operate the full product surface: native-performance mobile apps, type-safe web applications, desktop software and the cloud APIs that tie them together, all on a single, maintainable Microsoft .NET foundation.
Native-performance iPhone, iPad and Android applications built from a unified, maintainable C# and XAML codebase using Microsoft .NET MAUI, alongside platform-specific native integrations wherever the product demands them.
Rich, interactive Single-Page Applications with Blazor WebAssembly and Blazor Server/SSR that bring C# type safety, blazing speed and enterprise reliability to modern browsers, without brittle JavaScript sprawl.
High-throughput RESTful APIs, SignalR real-time pipelines, webhook processors and background workers powered by ASP.NET Core, SQL Server, PostgreSQL, Redis and Docker, deployed across Microsoft Azure and Google Cloud Platform.
High-performance desktop utilities, enterprise line-of-business software and Microsoft Office/Outlook add-ins built with .NET MAUI, WPF, WinUI and macOS native bridges, engineered for long service lives and painless upgrades.
Production Generative AI gateways on Google Vertex AI and Azure OpenAI, autonomous tool-calling agents on Semantic Kernel, Anchor & Delta context engineering, custom PyTorch/ML.NET models, and 2K computer vision pipelines.
Ship enterprise software at 3x speed with Principal Architects orchestrating Google AntiGravity, Claude Code, and Cursor under strict Onion Architecture—or rescue fragile AI-generated prototypes into production-solid systems in 2 weeks.
Microsoft .NET technology stack
We don't chase frameworks. We go deep on the Microsoft .NET ecosystem, so every layer of your product shares the same language, tooling, testing strategy and long-term support lifecycle.
Strongly typed, high-performance C# with async/await, records, source generators and native AOT where startup time matters, running on the current long-term-support .NET runtime.
Single-project apps for iOS, iPadOS, Android, macOS and Windows with MVVM, dependency injection and platform-specific handlers for camera, billing, biometrics and on-device ML.
WebAssembly, Server and static SSR render modes with shared Razor component libraries.
Minimal APIs, controllers, SignalR hubs, webhooks and hosted background workers.
SQL Server and PostgreSQL via EF Core, with Redis for caching, queues and sessions.
Containerised workloads on Azure and Google Cloud, plus offline CoreML and ONNX models.
Unified .NET architecture
Every client and service we build sits on a shared C# core, so a pricing rule, validation constraint or data contract is written, tested and fixed exactly once.
Base Class Library · async/await · Native AOT · LTS support lifecycle
One shared domain layer means one set of tests, one bug fix and one code review for every platform, instead of four parallel codebases drifting apart.
The same validation and pricing logic runs on the phone, in the browser and on the server, eliminating "works on iOS but not on web" defects.
Platform handlers drop down to StoreKit, Google Play Billing, CoreML or Win32 whenever the experience demands true native capability.
Elastic engineering teams
We maintain a dynamic team of senior remote and contract-based software engineers whose capacity scales flexibly with your project, delivering principal-level expertise exactly when it is needed without the overhead costs of full-time staff.
We review your goals, existing systems and constraints, then deliver a clear scope, a recommended .NET architecture and an honest delivery estimate before any commitment is made.
The principal architect leads; vetted senior engineers in mobile, Blazor, backend or DevOps join only for the phases where their skills move the needle.
Working builds, readable pull requests and frequent demos keep you in control, with TestFlight, Play Console tracks and staging environments from week one.
Capacity flexes with your roadmap. After launch we stay on for store updates, .NET upgrades, monitoring and new features, without retaining idle headcount.
FLAGSHIP IN-HOUSE PRODUCT • POWERED BY GEMINI 3.1 FLASH IMAGE & GOOGLE VERTEX AI
Engineered and published by KARIM CodeCrafters, VisionFlow AI (visionflowai.app) is a production cross-platform mobile and web ecosystem built on .NET MAUI 10 and ASP.NET Core 10. Unlike thin API wrappers, VisionFlow AI is a purpose-built, biometric-safe gateway that orchestrates multi-turn conversational image editing in plain English—transforming portraits, restoring decades-old photographs in 2K clarity, generating studio-lit professional ID headshots, and rendering stylized avatars with 100% facial identity preservation.
Subtly refine posture, proportions, and silhouette using identity-preserving AI. Zero manual sliders—describe the adjustment in natural English for natural realism.
Deep AI restoration of old, noisy, torn, blurred, or faded vintage photographs with full 2K clarity and scratch repair.
Transform casual selfies into LinkedIn-ready, interview-perfect 2K studio headshots and official 2x2 passport/visa formats without a photographer.
Reimagine portraits into Anime, Cyberpunk, Oil Painting, Watercolor, and 3D Render styles while strictly locking facial identity.
Built on .NET MAUI 10 for native iOS and Android performance from a single C# codebase, plus a native macOS Desktop Wrapper (.dmg) with Retina & drag-and-drop support.
Hardened ASP.NET Core 10 Web API, PostgreSQL, and Polly Resilience pipelines hosted on Google Cloud.
Every editing session maintains an immutable Identity Anchor (original photo) and a live Delta (current edit state) to guarantee 100% biometric facial consistency across chained conversational edits.
Authenticated with Google Vertex AI (gemini-3.1-flash-image) strictly via Google Cloud Application Default Credentials (ADC), paired with JWT dual-layer authentication and ECDsa-signed Apple secrets (Sign in with Apple & Google)—ensuring zero static API keys are ever exposed on client devices.
Verified client testimonials
From enterprise Outlook add-ins to mobile apps and production infrastructure, here is what clients say about working with Zeeshan.
“Zeeshan was an Excellent contractor. Available, Reliable and Knowledgeable. No hesitation in recommending.”
“Zeeshan Dad Khan has been an absolute pleasure to work with; patient, kind, informative, creative and efficient. He is truly an expert in his field. I continue to work with him and recommend him with the utmost confidence.”
“Zeeshan produced quality results for our Windows Phone 8 application. He was able to understand what was needed, make the correct assumptions and also recommend other solutions. Will hopefully get the opportunity to engage him again on future projects.”
Frequently asked questions
What CTOs, founders and product owners most often ask us before kicking off a .NET project.
Because one language, one toolchain and one shared domain layer can power every surface you ship. .NET MAUI compiles C# and XAML into genuinely native iOS, Android, macOS and Windows applications with full access to platform APIs, while Blazor brings the same C# models, validation rules and services to the browser through WebAssembly or server-side rendering. The result is less duplicated logic, fewer platform-specific defects, one team that can work across the entire stack, and long-term support backed by Microsoft's .NET release cadence.
You work directly with Principal Architect Zeeshan Dad Khan, who owns architecture, code quality and delivery. Around that core we scale a dynamic team of senior remote and contract-based .NET engineers up or down to match your workload, adding mobile, Blazor, backend or DevOps specialists during peak delivery and stepping back during stabilisation. You get principal-level expertise exactly when it is needed, without the recruiting time, payroll overhead or long-term commitments of full-time staff.
Yes. Legacy modernization is a core specialism. We audit your .NET Framework, WPF, WinForms or Xamarin.Forms codebase, map dependencies and third-party libraries, and plan an incremental migration to modern .NET 8 LTS or .NET 9+ and .NET MAUI. Because Xamarin reached end of support in May 2024, we prioritise moving mobile apps first, extracting business logic into shared, testable libraries, replacing custom renderers with MAUI handlers and moving backends to ASP.NET Core, so your product keeps shipping throughout the migration.
Yes. We manage the full release pipeline: Apple Developer and Google Play Console setup, code signing and provisioning, StoreKit and Google Play Billing integration for subscriptions and consumable credits, privacy nutrition labels and Data safety forms, in-app account deletion, restore-purchase flows and review submissions. We publish and monetize our own VisionFlow AI app (built on .NET MAUI 10, ASP.NET Core 10 and Google Vertex AI) on Google Play, with iOS and macOS launching soon, so we know these compliance requirements first-hand.
Send us a short brief using the contact form on this page, email info@kcodecrafters.com, or call or message +92-3142003065 on WhatsApp. We answer all client and technical inquiries within 24 hours on business days and schedule a no-obligation technical discovery call to review your goals, existing systems and constraints. You then receive a clear scope, recommended architecture and delivery estimate before any commitment is made.
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