You will get Build a Custom POS System for Retail/Restaurants - Mobile & Web
Top Rated
Project details
1. Omnichannel Sales Integration
Syncs in-store, online, and mobile orders in one dashboard. Real-time inventory updates across all channels.
2. Customizable Checkout UI
Branded interface with quick item search, modifiers (e.g., "no onion"), and split bills.
3. Inventory Auto-Replenishment
AI predicts stock needs and generates purchase orders. Alerts for low stock or expiry dates.
4. Offline Mode & Data Sync
Process sales without internet, auto-syncs when connection resumes. Critical for pop-up stores.
5. Multi-Location Management
Central control for chain stores with location-specific menus/pricing. Role-based staff access.
6. Customer Profiles & Loyalty
Track purchase history, offer discounts, and integrate membership programs.
7. Kitchen/Bar Display System
Instant order routing to preparation stations with timers and priority flags.
8. Advanced Reporting
Daily sales trends, employee performance, and profit margins. Export to QuickBooks/Xero.
9. Hardware Compatibility
Works with barcode scanners, receipt printers, cash drawers, and payment terminals.
10. API for 3rd-Party Apps
Connect to delivery platforms (Uber Eats), accounting software, or custom apps.
Syncs in-store, online, and mobile orders in one dashboard. Real-time inventory updates across all channels.
2. Customizable Checkout UI
Branded interface with quick item search, modifiers (e.g., "no onion"), and split bills.
3. Inventory Auto-Replenishment
AI predicts stock needs and generates purchase orders. Alerts for low stock or expiry dates.
4. Offline Mode & Data Sync
Process sales without internet, auto-syncs when connection resumes. Critical for pop-up stores.
5. Multi-Location Management
Central control for chain stores with location-specific menus/pricing. Role-based staff access.
6. Customer Profiles & Loyalty
Track purchase history, offer discounts, and integrate membership programs.
7. Kitchen/Bar Display System
Instant order routing to preparation stations with timers and priority flags.
8. Advanced Reporting
Daily sales trends, employee performance, and profit margins. Export to QuickBooks/Xero.
9. Hardware Compatibility
Works with barcode scanners, receipt printers, cash drawers, and payment terminals.
10. API for 3rd-Party Apps
Connect to delivery platforms (Uber Eats), accounting software, or custom apps.
Programming Languages
HTML & CSS, JavaScript, JavaCoding Expertise
Localization, Performance Optimization, DesignWhat's included
| Service Tiers |
Starter
$5,000
|
Standard
$10,000
|
Advanced
$15,000
|
|---|---|---|---|
| Delivery Time | 10 days | 20 days | 30 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 8 | 15 | 20 |
Design Customization | |||
Content Upload | - | - | |
Responsive Design | |||
Source Code |
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AE
Amr E.
Jun 18, 2026
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Excellent freelancer! He delivered the work professionally, on time, and with very good quality. Communication was smooth, and he understood the requirements clearly. He was responsive to feedback and made the needed adjustments quickly. I’m very satisfied with the final result and would definitely recommend him for similar projects. Looking forward to working with him again.
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About Wasim
Senior Backend & Cloud | AWS Serverless | Java | Node.js | SaaS | MVP
100%
Job Success
Dushanbe, Tajikistan - 2:42 am local time
I optimize backend architecture, infrastructure cost, database performance, and cloud security for high-growth SaaS platforms. Previously Senior Engineer at JustEat, Staples, and Finzly. 9+ years building production systems at scale, supporting 100k+ active users.
I design systems that directly improve business margins through performance, reliability, and cost efficiency.
Impact: -42% Cloud Spend | 94% Faster Data Pipelines | $2B+ processed on systems I helped design and operate.
𝐈𝐍-𝐇𝐎𝐔𝐒𝐄 𝐒𝐀𝐀𝐒 𝐌𝐈𝐍𝐃𝐒𝐄𝐓 & 𝐓𝐎𝐓𝐀𝐋 𝐎𝐖𝐍𝐄𝐑𝐒𝐇𝐈𝐏
I operate like a technical co-founder, not a ticket-based freelancer. I take end-to-end ownership of architecture, scalability, and delivery.
You define the business goal, and I design and implement the backend system to achieve it with minimal operational overhead and long-term scalability.
From MVP to millions of users, I make architecture decisions based on performance, cost efficiency, and maintainability.
𝐏𝐄𝐑𝐅𝐎𝐑𝐌𝐀𝐍𝐂𝐄 & 𝐃𝐀𝐓𝐀 𝐄𝐍𝐆𝐈𝐍𝐄𝐄𝐑𝐈𝐍𝐆
If your system is slow or your cloud bill is increasing, I refactor architecture for both performance and cost efficiency.
◆ At Staples, reduced a core data pipeline from 90 minutes to 5 minutes (94% improvement)
◆ Optimized backend systems using caching, indexing, Kafka, and Redis to achieve millisecond-level latency
◆ Refactored legacy systems into scalable event-driven architectures where needed
𝐑𝐀𝐏𝐈𝐃 𝐌𝐕𝐏 𝐃𝐄𝐕𝐄𝐋𝐎𝐏𝐌𝐄𝐍𝐓 (𝐀𝐈 𝐀𝐂𝐂𝐄𝐋𝐄𝐑𝐀𝐓𝐄𝐃)
Need to launch fast? I combine AI-assisted frontend generation with production-grade backend architecture.
Using tools like Lovable, Bolt.new, v0, Supabase, and Cursor to accelerate UI development, while I design and implement secure, scalable AWS backends underneath.
𝐈𝐍𝐕𝐄𝐒𝐓𝐎𝐑-𝐑𝐄𝐀𝐃𝐘 𝐀𝐑𝐂𝐇𝐈𝐓𝐄𝐂𝐓𝐔𝐑𝐄 & 𝐂𝐎𝐌𝐏𝐋𝐈𝐀𝐍𝐂𝐄
Preparing for funding rounds or enterprise clients:
◆ Architecture audits to identify risks, bottlenecks, and cost inefficiencies
◆ Compliance-ready systems aligned with HIPAA, GDPR, SOC2, and PCI-DSS
◆ Clear technical documentation for investor and enterprise due diligence
𝐖𝐇𝐀𝐓 𝐈 𝐃𝐄𝐋𝐈𝐕𝐄𝐑
◆ Cost-efficient backend systems optimized for real production workloads
◆ Scalable architectures designed for long-term product growth
◆ High-availability systems built for peak load reliability
◆ AI-integrated backend systems using OpenAI and AWS Bedrock
𝐑𝐄𝐂𝐄𝐍𝐓 𝐂𝐀𝐒𝐄 𝐒𝐓𝐔𝐃𝐘
A fintech platform was failing during traffic spikes, causing failed transactions and rising infrastructure costs.
I re-architected their backend into a scalable event-driven system, optimized APIs, and removed database bottlenecks.
Result: handled a 300% traffic surge with zero downtime and reduced AWS costs by 42% within one month.
𝐓𝐄𝐂𝐇 𝐒𝐓𝐀𝐂𝐊 𝐀𝐓 𝐀 𝐆𝐋𝐀𝐍𝐂𝐄
Languages: Java (Spring Boot), Node.js (NestJS), Python
Cloud/Infra: AWS (Lambda, ECS/Fargate, DynamoDB, RDS, EventBridge, S3), Terraform, CDK etc...
AI: OpenAI, AWS Bedrock, LangChain etc...
Data: Redis, Kafka, Supabase etc...
Tools: Lovable, Bolt.new, v0, Cursor base44, claude etc..
𝐂𝐋𝐎𝐔𝐃𝐅𝐋𝐀𝐑𝐄 𝐄𝐃𝐆𝐄 & 𝐒𝐄𝐑𝐕𝐄𝐑𝐋𝐄𝐒𝐒
Cloudflare Workers (APIs), R2 (storage), D1/KV (data), Queues/Durable Objects (async), CDN/WAF etc...
𝐈𝐍𝐃𝐔𝐒𝐓𝐑𝐈𝐄𝐒
Fintech (PCI/GDPR), Healthcare (HIPAA), E-commerce, Logistics, Marketplaces
𝐑𝐄𝐀𝐃𝐘 𝐓𝐎 𝐓𝐀𝐊𝐄 𝐘𝐎𝐔𝐑 𝐀𝐑𝐂𝐇𝐈𝐓𝐄𝐂𝐓𝐔𝐑𝐄 𝐒𝐄𝐑𝐈𝐎𝐔𝐒𝐋𝐘?
If you're building a serious SaaS product, you don’t just need code, You need architecture that scales, performs, and stays cost-efficient under real production load.
Send 2–3 time slots, and I’ll review your system and suggest an architecture approach.
Steps for completing your project
After purchasing the project, send requirements so Wasim can start the project.
Delivery time starts when Wasim receives requirements from you.
Wasim works on your project following the steps below.
Revisions may occur after the delivery date.
Please provide requirements