You will get a Scalable Offline-First POS, CRM, or ERP Web & Desktop Application
Rising Talent
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.
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, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$599
|
Standard
$1,500
|
Advanced
$3,200
|
|---|---|---|---|
| Delivery Time | 12 days | 21 days | 30 days |
Number of Revisions | 1 | 2 | 2 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code | - | - | - |
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Denise M.
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.
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.
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.
About Usama
MERN Full-Stack Developer | Next.js, React Native | SaaS, ERP & AI
100%
Job Success
Faisalabad, Pakistan - 5:40 pm local time
🚀 5+ Years Building Production SaaS, ERP, AI & Mobile Applications
I help startups and growing businesses turn rough ideas into production-ready SaaS platforms, ERP systems, AI products, and MVPs.
As a Full Stack Developer specializing in React, Next.js, React Native, Node.js, MERN, and AI integrations, I handle the complete product from architecture, database, and APIs to web/mobile frontends, AI workflows, third-party integrations, and deployment.
I spend most of my attention: data models that hold up as usage grows, clean APIs, multi-tenant architecture, role-based access, offline-first workflows, audit logging, backups that are actually secure. I've worked on SaaS and business apps where the architecture and data flow mattered a lot more than how polished the UI looked. What I'm going for every time is the same thing - reliable for users, easy for whoever inherits the codebase, and built so it doesn't need a rewrite to scale.
What I can build for you:
âś” AI Applications & Integrations
OpenAI API integrations, AI assistants, RAG chatbots, AI voice agents with Vapi and Twilio, appointment booking, customer support, and AI-powered workflows.
âś” SaaS & ERP Systems
Multi-tenant SaaS platforms, custom ERP systems, role-based access, subscription systems, dashboards, CRM, inventory, POS, and business management platforms.
âś” Offline-First Applications
Web, desktop, and React Native mobile app that continue working with unreliable or no internet, including local data storage, background synchronization, conflict handling, and reliable cloud sync.
âś” Full-Stack Mobile Applications
React Native & Expo apps for iOS and Android with scalable Node.js APIs, authentication, payments, notifications, real-time features, and AI integrations. I also convert existing React/web apps into iOS & Android applications using Capacitor, allowing businesses to extend their existing web products to mobile without rebuilding from scratch.
âś” Business & Sales Automation
n8n and Zapier workflows for lead routing, notifications, appointment scheduling, CRM updates, job alerts, data synchronization, and repetitive business processes.
âś” Custom Industry Solutions
Healthcare and pharmacy systems, patient workflows, real estate platforms, booking and scheduling systems, CRM, inventory management, and other industry-specific applications.
âś” Performance & SaaS Optimization
Next.js optimization, API and backend improvements, database optimization, application migrations, and architecture improvements for products growing under real-world traffic.
Why clients work with me:
âś… Full stack ownership Frontend, backend, database, APIs, integrations, and deployment. I look at the entire system, not just individual tickets.
âś… Strong architecture decisions I design systems with scalability, security, maintainability, and future growth in mind.
âś… Production-ready development Role-based permissions, audit logs, secure backups, error handling, and reliable data synchronization when your product needs them.
âś… Clear communication I keep technical decisions simple and transparent, so you always know what is being built and why.
đź’¬ 100% Client Success Score and a 5.0 rating from completed contracts. One client noted:
"Usama handled our ERP development as Full Stack Developer/MERN Stack developer in a very organized way. Communication was consistent, deadlines were respected, and he managed changes without making the process complicated. A reliable experience overall."
Let's jump on a free consultation call. Share your idea and I'll provide a free architecture blueprint and roadmap for your SaaS, ERP, or AI product, even if we don't end up working together.
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.