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You will get a Scalable Offline-First POS, CRM, or ERP Web & Desktop Application

Usama R.Status: Offline
Usama R. Usama R.
5.0
Rising Talent
Preview imagePreview imagePreview imagePreview imagePreview image

Let a pro handle the details

Buy Web Application Programming services from Usama, priced and ready to go.
Usama R.Status: Offline
Usama R. Usama R.
5.0
Rising Talent
Preview imagePreview imagePreview imagePreview imagePreview image

Let a pro handle the details

Buy Web Application Programming services from Usama, priced and ready to go.

Project details

Your business operations can't afford to stop just because the internet drops. I build high-velocity, hybrid (Web & Desktop) offline-first POS, CRM, and custom ERP applications using React, Node.js/TypeScript, and PostgreSQL, specifically tailored for retail, hospitality, and medical enterprises.

By leveraging Progressive Web App (PWA) capabilities alongside native desktop wrappers like Electron.js and local SQLite caching, your system remains fully functional 100% of the time.

What This Hybrid System Delivers:
True Offline Autonomy: Transactions, inventory updates, and customer data log locally and sync seamlessly via smart outbound mutation queues when connection returns.

Deterministic Conflict Resolution: Advanced syncing patterns (like CRDTs or Last-Write-Wins) prevent data overwrites across multiple branches.

Enterprise-Grade Control: Robust financial ledgers, automated multi-branch inventory tracking, and cryptographic role-based access control (RBAC).

Get reliable, enterprise-grade control over your business operations, completely optimized for both web browsers and desktop environments—whether you are online or off.
Programming Languages
JavaScript, Python, TypeScript
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Security
What's included
Service Tiers Starter
$1,800
Standard
$4,400
Advanced
$6,000
Delivery Time 12 days 21 days 30 days
Number of Revisions
122
Design Customization
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Content Upload
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Responsive Design
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Source Code
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5.0
3 reviews
100% Complete
(3)
1% Complete
(0)
1% Complete
(0)
1% Complete
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1% Complete
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DM

Denise M.
5.00
Jun 3, 2026
Full-Stack SaaS Developer (MERN + Cloud Architecture) Usama handled our ERP-related MERN development work in a very organized way. He stayed consistent with communication, provided updates at the right time, and didn’t leave things unclear during development. Deadlines were respected, and he managed changes without making the process complicated. A reliable experience overall.

CW

Connir W.
5.00
May 27, 2026
Senior MERN Engineer – SaaS & ERP Platform Lead We worked together on an ERP development project where Ammar contributed as a full-stack MERN developer. He managed dashboard features, backend integrations, and several UI improvements with attention to detail. Tasks were completed properly, and he adapted well to feedback and changing requirements.

CW

Connir W.
5.00
May 27, 2026
Senior Full-Stack MERN Developer – Multi-Tenant SaaS Platform Usama worked on our MERN-based SaaS platform and handled both frontend and backend tasks efficiently. He helped implement multi-tenant functionality, improved API performance, and maintained clean communication during the development process. Good understanding of scalable web applications and project structure.
Usama R.Status: Offline

About Usama

Usama R.Status: Offline
Senior Full-Stack MERN Developer | Multi-Tenant SaaS & ERP
100% Job Success
5.0  (3 reviews)
Faisalabad, Pakistan - 4:53 am local time
Building a resilient, offline-first ERP or an AI-powered SaaS? I engineer highly scalable MERN stack applications designed to handle complex business logic, eliminate downtime, and automate workflows. I specialize in React.js, Next.js, Node.js, Express.js, MongoDB, PostgreSQL, TypeScript, and modern cloud-based ,offline-first architectures, saas and MVP.

I help startups, SaaS companies, and growing businesses build fast, scalable, and maintainable applications with clean frontend experiences and robust backend systems.

Core Skills & Technologies:
• React.js / Next.js
• Node.js / Express.js
• MongoDB / PostgreSQL
• TypeScript / JavaScript
• REST APIs / GraphQL APIs
• Offline-First Architecture / PWA Development
• Multi Tenant Architecture
• Tailwind CSS / Material UI
• Redux / Zustand
• Prisma ORM / Drizzle ORM
• AWS / Docker / CI-CD Pipelines
• Microservices Architecture
• SaaS Development
• ERP & POS Systems
• AI Integrations & Automation
• OpenAI API / n8n / Zapier / Make
• Authentication & Role-Based Access
• Stripe Payment Integration
• Lovable/Replit
• Performance Optimization

Projects & Experience:

**Rx-Pulse (Offline-First Pharmacy ERP & POS)**
Built a resilient, multi-branch cloud ERP and POS platform utilizing an Offline-First architecture (PWA/IndexedDB sync) to ensure zero-downtime retail billing during internet outages. Features real-time inventory management, keyboard-first workflows, and complex data-merging conflict resolution across branches..

**SocialTip (SaaS Platform)**
Worked on scalable backend services, Stripe payment integration, API development, and microservice architecture for a high-traffic social tipping platform.

**CRM & Custom ERP Dashboards**
Developed enterprise-level dashboards and management systems with complex workflows, analytics, reporting, project tracking, and multi-role management for service businesses.

**AI & Workflow Automation**
Built AI-powered automation systems using OpenAI, n8n, Zapier, and Make to reduce manual work and improve operational efficiency.

One solution included an AI voice receptionist capable of handling calls, scheduling appointments, and automating customer interactions.

What You Can Expect:
• Clean, scalable, maintainable code
• Strong frontend + backend architecture
• Responsive and modern UI/UX
• Clear communication and regular updates
• Reliable delivery and long-term support
• Business-focused problem solving

I’m available for:
• Full-Stack MERN Development
• SaaS Application Development
• ERP / POS Systems
• Offline-First ERP / POS Systems
• Custom Dashboards & Admin Panels
• API Development & Integrations
• AI-Powered Applications
• Lovable/Replit/Cursor/Claude code fix
• Automation Systems
• Long-Term Product Development

If you’re looking for a developer who understands both technology and business requirements, feel free to send me a message and discuss your project.

Steps for completing your project

After purchasing the project, send requirements so Usama can start the project.

Delivery time starts when Usama receives requirements from you.

Usama works on your project following the steps below.

Revisions may occur after the delivery date.

Operational Blueprinting

Systemic mapping of the business operations, regional tax calculations, discount rules, and the central PostgreSQL relational schema design

Core API and Database Construction

Engineering the central Node.js/TypeScript REST/GraphQL APIs and implementing cryptographic RBAC to secure mutation endpoints.

Review the work, release payment, and leave feedback to Usama.