You will get Custom CRM | Sales Automation & Lead Management Scalable System
Top Rated
Project details
As an Experienced Full Stack Developer, I build custom CRM systems tailored to your exact business workflows not generic, one-size-fits-all tools.
👉 I handle the complete development cycle:
Discovery → System Design → Development → Testing → Deployment → Ongoing Support
You’ll get a production-ready CRM solution that helps you manage leads, automate processes, and improve team productivity.
👉 Your CRM will include:
✔ Lead & Customer Management
✔ Sales Pipeline & Deal Tracking
✔ Role-Based Access Control (Admin/Staff/Managers)
✔ Task & Activity Management
✔ Automation (Emails, Follow-ups, Notifications)
✔ Reports & Analytics Dashboard
✔ Third-party integrations (Email, Payment, APIs)
💼 Ideal for: Startups, Agencies, Sales Teams, Enterprises
👉 Programming Languages
HTML & CSS, JavaScript, TypeScript
👉 Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Scalable Architecture, Security, API Development
CRM Development, Custom CRM, Sales Automation, Lead Management, SaaS CRM, Business Automation, Full Stack Developer, Node.js, React, Next.js, PostgreSQL, Supabase, API Integration, Dashboard, RBAC
👉 I handle the complete development cycle:
Discovery → System Design → Development → Testing → Deployment → Ongoing Support
You’ll get a production-ready CRM solution that helps you manage leads, automate processes, and improve team productivity.
👉 Your CRM will include:
✔ Lead & Customer Management
✔ Sales Pipeline & Deal Tracking
✔ Role-Based Access Control (Admin/Staff/Managers)
✔ Task & Activity Management
✔ Automation (Emails, Follow-ups, Notifications)
✔ Reports & Analytics Dashboard
✔ Third-party integrations (Email, Payment, APIs)
💼 Ideal for: Startups, Agencies, Sales Teams, Enterprises
👉 Programming Languages
HTML & CSS, JavaScript, TypeScript
👉 Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Scalable Architecture, Security, API Development
CRM Development, Custom CRM, Sales Automation, Lead Management, SaaS CRM, Business Automation, Full Stack Developer, Node.js, React, Next.js, PostgreSQL, Supabase, API Integration, Dashboard, RBAC
Web Programming Project
API Development, API Integration, Data DashboardProgramming Languages
JavaScript, ASP.NET, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$2,200
|
Standard
$4,000
|
Advanced
$5,800
|
|---|---|---|---|
| Delivery Time | 20 days | 35 days | 60 days |
Number of Revisions | 1 | 2 | 3 |
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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Idan b.
Feb 22, 2026
SaaS Developer Needed for PayPal Integration and QA
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Prince R.
Feb 12, 2026
Full-stack dev to complete and optimize auditing app
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Nahar G.
Nov 18, 2025
Mobile app redesign
About Karan
SaaS Development Expert | Next.js, React, Node.js | MVP to Enterprise
93%
Job Success
Surat, India - 8:08 am local time
𝐈 𝐡𝐞𝐥𝐩 𝐬𝐭𝐚𝐫𝐭𝐮𝐩𝐬 𝐚𝐧𝐝 𝐛𝐮𝐬𝐢𝐧𝐞𝐬𝐬𝐞𝐬 𝐛𝐮𝐢𝐥𝐝 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞 𝐒𝐚𝐚𝐒 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐬, 𝐫𝐨𝐛𝐮𝐬𝐭 𝐌𝐕𝐏𝐬, 𝐚𝐧𝐝 𝐜𝐮𝐬𝐭𝐨𝐦 𝐰𝐞𝐛 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 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 Analysis
Understanding your business needs, workflows, and goals
Planning & Wireframing
Designing system architecture and UI flow