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As an Experienced Full Stack Developer, I will build a custom CRM system tailored to your business workflows—designed to improve sales efficiency, automate processes, and centralize customer data.
👉 I handle the complete development cycle:
discovery → system architecture → UI/UX → backend/API → testing → deployment.
You will get a production-ready CRM system you can actually use to scale your business: lead management, sales pipeline tracking, customer database, role-based access, reporting dashboards, and automation tools.
Whether you are a startup or an established business, I build CRM systems that are flexible, scalable, and easy to use.
👉 Core features include:
• Lead & Contact Management
• Sales Pipeline & Deal Tracking
• Task & Activity Management
• Role-Based Access Control (Admin / Team)
• Reports & Analytics Dashboard
• Workflow Automation (Follow-ups, Notifications)
• Third-party Integrations (Email, APIs, Payment if needed)
👉 Tech Stack:
React / Next.js, Node.js / NestJS, TypeScript, PostgreSQL / MongoDB
(Optional: AI features, Chatbots, Automation tools)
👉 I handle the complete development cycle:
discovery → system architecture → UI/UX → backend/API → testing → deployment.
You will get a production-ready CRM system you can actually use to scale your business: lead management, sales pipeline tracking, customer database, role-based access, reporting dashboards, and automation tools.
Whether you are a startup or an established business, I build CRM systems that are flexible, scalable, and easy to use.
👉 Core features include:
• Lead & Contact Management
• Sales Pipeline & Deal Tracking
• Task & Activity Management
• Role-Based Access Control (Admin / Team)
• Reports & Analytics Dashboard
• Workflow Automation (Follow-ups, Notifications)
• Third-party Integrations (Email, APIs, Payment if needed)
👉 Tech Stack:
React / Next.js, Node.js / NestJS, TypeScript, PostgreSQL / MongoDB
(Optional: AI features, Chatbots, Automation tools)
Programming Languages
JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, DesignWhat's included
| Service Tiers |
Starter
$1,500
|
Standard
$3,000
|
Advanced
$5,000
|
|---|---|---|---|
| Delivery Time | 18 days | 35 days | 55 days |
Number of Revisions | 0 | 1 | 2 |
Number of Pages | 5 | 9 | 15 |
Design Customization | |||
Content Upload | - | ||
Responsive Design | - | - | |
Source Code |
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NU
Nat U.
Jun 5, 2026
Xamarin developer to maintain and update existing app, payment integration work, conversion to MAUI
I had an excellent experience working with Karan.
He successfully upgraded our mobile application from Xamarin.Forms to .NET MAUI and handled both the mobile app and the associated .NET backend services. The project involved a number of technical challenges, but he consistently demonstrated strong problem-solving skills, attention to detail, and a deep understanding of the mobile and backend ecosystems.
Throughout the engagement, he was responsive, professional, and proactive in identifying issues before they became problems. The migration was completed smoothly, performance improved, and the application remained stable throughout the process. He also communicated clearly, provided thoughtful recommendations, and was easy to work with from start to finish.
If you're looking for a developer with strong expertise in .NET, MAUI, mobile development, and backend services, I would not hesitate to recommend him. I look forward to working with him again on future projects.
He successfully upgraded our mobile application from Xamarin.Forms to .NET MAUI and handled both the mobile app and the associated .NET backend services. The project involved a number of technical challenges, but he consistently demonstrated strong problem-solving skills, attention to detail, and a deep understanding of the mobile and backend ecosystems.
Throughout the engagement, he was responsive, professional, and proactive in identifying issues before they became problems. The migration was completed smoothly, performance improved, and the application remained stable throughout the process. He also communicated clearly, provided thoughtful recommendations, and was easy to work with from start to finish.
If you're looking for a developer with strong expertise in .NET, MAUI, mobile development, and backend services, I would not hesitate to recommend him. I look forward to working with him again on future projects.
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Jeremy W.
Apr 17, 2026
.NET MAUI Mobile Developer Needed for iOS/Android App
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About Karan
SaaS Development Expert | Next.js, React, Node.js | MVP to Enterprise
93%
Job Success
Surat, India - 2:58 am local time
I help startups and businesses build scalable SaaS products, MVPs and custom web applications that are designed for long-term growth, performance and maintainability.
✅ Services
• SaaS Product Development
• MVP Development for Startups
• Custom Web Applications
• Admin Dashboards & Internal Tools
• Subscription & Payment Systems (Stripe)
• API Development & Integrations
• Performance & Scalability Optimization
• Ongoing Product Development
💻 Tech Stack
React.js • Next.js • TypeScript
Node.js • .NET Core • Xamarin
PostgreSQL • MongoDB
AWS • Docker • Vercel
📈 Recent Results
• Built and launched multi-tenant SaaS platforms
• Developed subscription-based products with Stripe
• Created scalable APIs and backend systems
• Delivered startup MVPs in weeks, not months
• Built admin portals, dashboards, and business platforms
Why clients hire me:
✔ Top-Rated Upwork Freelancer
✔ 13+ Years of Full Stack Development Experience
✔ Clean, Scalable, Production-Ready Code
✔ Fast Communication & Reliable Delivery
✔ Strong Focus on Business Goals and User Experience
If you're looking for a developer who can understand both the technical and business side of your product, let's talk.
📩 Send me an invitation and let's discuss your project.
Steps for completing your project
After purchasing the project, send requirements so Karan can start the project.
Delivery time starts when Karan receives requirements from you.
Karan works on your project following the steps below.
Revisions may occur after the delivery date.
Requirement Gathering
Understand your vision, features, and goals
Planning & Architecture
Define structure, tech stack, and workflow