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I will build electron desktop apps for pos, erp, or CRM with offline sync
Usama R
About this gig
Most web apps fail the moment the internet cuts out. Staff get stuck. Transactions get lost. Operations stop. I build desktop applications for POS, ERP, and CRM systems that keep running whether there's a connection or not and sync automatically when it comes back.
What I Build
Using Electron, I develop Windows desktop software (delivered as a full .exe) for real business use: point of sale systems, inventory and ERP platforms, and CRM tools for managing customers and pipelines. Each app runs locally on the machine, connects to your server or cloud backend when online, and falls back to local SQLite storage when it can't. No connection? No problem the app keeps going and pushes the queued data the moment it reconnects.
The frontend is built with React or Vue, so the interface feels fast and professional, not like something duct-taped together. You get a proper packaged installer, not a zip file you have to explain to your team.
Why Work With Me
I build software for how businesses actually work, not how they look in demos. That means thinking through edge cases: what happens when two users edit the same record while offline? How do you resolve a sync conflict without losing data? Th
Get to know Usama R
Usama R
Full stack Web and Mobile App Developer
- FromPakistan
- Member sinceFeb 2026
- Avg. response time1 hour
Languages
English
I’m a Full-Stack Developer specializing in MERN, Next.js, React Native, SaaS, ERP/POS systems, and AI solutions. I build scalable, production-ready web & mobile applications with secure APIs, modern UI, cloud integrations, AI agents, LLMs, RAG, and workflow automation. From MVP development to complex business platforms, I handle frontend, backend, database, integrations, deployment, and optimization turning your idea into a reliable product that’s built to scale.
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Other Software Development Services I Offer
FAQ
What exactly do you deliver — is it a full working app or just source code?
Both. You get a fully packaged .exe installer that runs on Windows right out of the box, plus the complete source code. Nothing is hidden, locked, or dependent on me after delivery.
What does "offline mode" actually mean? How does the sync work?
The app stores all data locally using SQLite when there's no internet connection. The moment a connection is detected, it pushes the queued changes to your server or cloud database automatically. If two users edited the same record while offline, the app handles the conflict — it doesn't just overwr
Can this run on multiple computers in the same business?
Yes. The Standard and Premium packages support multi-user access. Each machine runs the desktop app, and all data syncs through a shared server. This works for single-location businesses on a local network and multi-branch setups over the internet.
How to run on multiple computers in oflline mode?
I have successfully implemented this via local network you can access the software through the local network although you can also access it on your phone via mobile application
