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I need a small middleware service that can pull live inventory levels from a third-party POS platform (it’s not Shopify, Square, or Lightspeed—so please be comfortable discovering or reverse-engineering a different API or database schema). The single purpose is to keep my own server in sync with whatever is on the POS in real time. Here’s what the job looks like from my side: • Goal Every sale or stock adjustment in the store should trigger, or at least very quickly reflect, a quantity update on my server so the numbers stay accurate across all of my channels. • Flow I’m picturing 1. Authenticate to the POS (REST, GraphQL, WebSocket, direct DB—whatever the platform offers). 2. Detect inventory changes continuously—ideally through a webhook or streaming endpoint; polling is acceptable if you can keep the lag minimal. 3. Transform the payload into a clean JSON object. 4. POST that JSON to a simple endpoint I’ll provide. • Deliverable : Script which identify the available inventory after each sale - create a pull with live stock - give me that in excel or push that to my server. POS SETUP FILE: [login to view URL]
Projekt-ID: 40219626
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23 freelancere byder i gennemsnit ₹25.548 INR på dette job

As an established web development agency with over a decade of working experience, our team is well-equipped to transform your vision into reality. We are proficient in a vast range of programming languages including JavaScript and MySQL, making us experts in building the type of middleware services you're looking for. Our deep comprehension of various eCommerce platforms will prove valuable in tackling the challenges associated with reverse-engineering and integrating distinct POS systems. Even though your platform isn't on the list provided, we pride ourselves on our ability to adapt to various APIs and databases whenever required. Furthermore, our commitment to attaining accurate and real-time data synchronization holds immense value in this project. We'll exhaust all possibilities, be it webhooks or polling, to ensure minimal latency between stock adjustments on the POS and updates on your server. Our deliverable would be a secure script that fetches and consolidates data conveniently for you- whether it be as Excel sheets or directly pushing it to your server.
₹7.000 INR på 7 dage
6,4
6,4

Hello Mohammed! I’m excited about the opportunity to help with your project. Based on your requirements, I believe my expertise in JavaScript, MySQL aligns perfectly with your needs. How I Will Build It: I will approach your project with a structured, goal-oriented method. Using my experience in JavaScript, Software Architecture, Inventory Management, MySQL, JSON, Database Management, API Development, REST API, I’ll deliver a solution that not only meets your expectations but is also scalable, efficient, and cleanly coded. I ensure seamless integration, full responsiveness, and a strong focus on performance and user experience. Why Choose Me: - 10 years of experience delivering high-quality web and software projects - Deep understanding of JavaScript, MySQL and related technologies - Strong communication and collaboration skills - A proven track record — check out my freelancer portfolio. - I’m available for a call to discuss your project in more detail - Committed to delivering results on time, every time Availability: I can start immediately and complete this task within the expected timeframe. Looking forward to working with you, Mohammed! Best regards, Ali Zahid India
₹1.500 INR på 7 dage
5,6
5,6

I can develop a middleware service to pull live inventory levels from the third-party POS platform, keeping my server in sync with the POS in real time, by authenticating to the POS, detecting inventory changes, transforming the payload into a clean JSON object, and POSTing it to a provided endpoint, adapting to the proposed budget and delivering a script to identify available inventory after each sale. Waiting for your response in chat! Best Regards.
₹19.102 INR på 3 dage
4,7
4,7

I can build a lightweight middleware service that authenticates to your POS (API/WebSocket/DB as available), detects inventory changes in near real time (webhook/streaming or low-lag polling), normalizes them to clean JSON, and either pushes updates to your server endpoint or exports live stock snapshots to Excel/CSV with clear logging and error handling.
₹2.000 INR på 3 dage
4,4
4,4

As a seasoned full-stack developer with a specialization in mobile app development, I bring a unique edge to this project. My extensive experience working with backend services and optimizing databases over the last 8+ years aligns perfectly with the job description you've provided. I've successfully created numerous solutions that require pulling live data from various platforms and transforming them into clean, user-friendly formats. Apart from JavaScript, I'm proficient in handling multiple databases including MySQL which is perfect for creating a seamless, real-time inventory sync between your server and the POS platform. My familiarity with different API schemas ensures that my adaptability and problem-solving skills are well-suited to discovering or reverse-engineering new APIs effectively and efficiently. Moreover, my proficiency in other relevant programming languages such as PHP, Java, HTML, CSS, alongside my expertise in Figma, React and Node.js further strengthen my suitability for this project. Let's collaborate to create a reliable and robust application that will keep your inventory 'anywhere to anytime' up-to-date.
₹7.999 INR på 5 dage
4,1
4,1

Hi there! I'm Robert, a Senior Full-Stack & AI Engineer with over 10 years of experience architecting and delivering SaaS platforms, automation systems, and intelligent applications, specializing in API development, database management, and real-time data synchronization. I recently developed a middleware solution for a client that involved integrating a bespoke POS system to update inventory in real-time, ensuring seamless data flow and accuracy. My deep technical knowledge in API development and database architecture aligns well with your need for a robust system that reacts instantly to sales and stock adjustments. I can complete this project perfectly and deliver scalable, production-ready results. I adhere to best practices, ensuring clean architecture and thorough documentation, while also implementing secure data handling protocols. Let’s connect to refine your requirements and begin building a solution that exceeds expectations. What specific POS platform are you using, and do you have access to its API documentation?
₹12.500 INR på 10 dage
3,2
3,2

With over 20 years of experience in the web, I am confident that I am the right person to create a small middleware service to keep your inventory in sync with your POS platform. My strong skills in JavaScript and MySQL give me the ability to dig deep and figure out unknown platforms' API or database schema, which is particularly relevant for your project. My vision for this project aligns perfectly with yours - to have an efficient system that detects inventory changes in real-time and keeps them updated across all channels. I can build this system to continuously and quickly reflect any quantity updates from your POS on your own server. Lastly, I assure you that I maintain clean code quality while delivering. In this case, it means that I will create a script that identifies the available inventory post-sale, creates a pull with live stock, and delivers it in Excel or pushes it directly to your server as needed. Let's get accurate real-time inventory syncing done together!
₹7.000 INR på 7 dage
3,0
3,0

Hello, I can build a lightweight middleware script to pull live inventory from your POS (API, webhook, or DB), normalize it, and push updates to your server or Excel in near real time. Comfortable with reverse-engineering non-standard POS systems.
₹7.000 INR på 7 dage
1,6
1,6

Hii, I’ve thoroughly reviewed your project and I’m confident I can deliver it smoothly and professionally using Inventory Management, MySQL, Database Management, JavaScript, REST API, API Development, JSON and Software Architecture. I’ve successfully completed numerous projects with similar requirements, where quality, performance, and precision were the top priorities, and my portfolio reflects that track record. For Real-Time POS Inventory Sync, I’d love to know: is there a particular outcome or milestone you’d like to prioritize first, or shall I follow a structured approach from start to final delivery? Feel free to explore my profile to see my recent work and the results I’ve achieved for clients. If it resonates with your vision, let’s connect in chat to discuss the next steps and make this project a success together! Looking forward to collaborating, Ahtisham Malik
₹1.500 INR på 6 dage
1,0
1,0

Hi there, I can build a lightweight middleware service that keeps your server in near–real-time sync with inventory changes from your POS system—even if it’s a lesser-known or undocumented platform. Approach & Flow POS Access & Discovery I’ll analyze the POS to identify the best available integration method (REST, GraphQL, WebSocket, webhook, or direct database access). If documentation is limited, I’m comfortable reverse-engineering request flows and schemas safely. Live Inventory Detection Preferred: webhooks or streaming endpoints for instant updates Fallback: optimized polling with minimal latency Data Normalization Inventory changes (sales, adjustments, returns) are transformed into a clean, consistent JSON structure. Sync & Export POST real-time inventory updates to your provided endpoint Optional Excel output (auto-generated or scheduled) showing live available stock after each sale Deliverables Middleware script/service that tracks inventory after every sale Live stock pull with near–real-time accuracy JSON push to your server and/or Excel export Clear setup and usage documentation The solution will be lightweight, secure, and designed to run continuously with minimal maintenance. If you can share the POS name or access details, I can confirm the optimal integration path immediately. Best regards, Arun
₹12.000 INR på 7 dage
0,0
0,0

Hi, I understand your goal clearly: keep your server in near real-time sync with a third-party POS system by detecting every sale or inventory adjustment and pushing clean inventory data to your endpoint or exporting it to Excel. I’m comfortable working with non-standard POS platforms and discovering undocumented or poorly documented systems. If the POS provides REST, GraphQL, WebSockets, webhooks, or even direct database access, I can analyze and use the most reliable method available. If none exist, I can implement efficient polling with minimal lag. What I will do: Authenticate securely with the POS (API, token, session, or DB access). Identify how inventory changes are exposed (webhooks/streams if available, otherwise optimized polling). Track stock changes after each sale or manual adjustment. Normalize the data into a clean JSON structure.
₹7.000 INR på 7 dage
0,0
0,0

Proposal I can build a lightweight middleware service that keeps your server inventory in sync with the third-party POS in near real time. The focus will be reliability, low latency, and clean data transformation. Approach - Analyze the POS setup file and available integration options - Authenticate with the POS (REST / WebSocket / polling, depending on what’s supported) - Detect inventory changes after each sale or stock adjustment - Normalize the data into a clean JSON structure - Push updates to your server via the provided endpoint - Optional export of inventory snapshots to Excel if required Technical Implementation - JavaScript-based service (Node.js) - REST API integration and JSON handling - MySQL support if direct database access is required - Efficient polling or event-based handling to minimize sync delay - Clear error handling and logging for failed syncs Deliverables - Working middleware script/service - Verified live inventory sync after sales - JSON payload structure documentation - Optional Excel output or server push as requested I focus on building simple, reliable integration services that keep systems in sync without unnecessary complexity.
₹11.999 INR på 7 dage
0,0
0,0

I specialize in building data-driven web applications and middleware services focused on recording, syncing, and retrieving structured data. I’m comfortable working with undocumented or partially documented systems and designing fallback strategies when real-time hooks are unavailable. I prioritize clean architecture, accurate data handling, and practical solutions that work in real production environments rather than theoretical setups
₹7.000 INR på 7 dage
0,0
0,0

Hey! Quick question, what's the toughest part of this Flavours POS inventory sync for you: discovering undocumented endpoints without API docs, keeping polling lag under 10s during peak sales, or securing the token/auth flow against leaks? I've built similar middleware for obscure POS platforms, like a real-time sync pulling with zero public docs, reverse engineered their REST schema and got <5s updates via smart polling. If this aligns, I can show you the exact Node.js snippet I used for instant stock pulls + Excel dumps. Video call work? We can finalize scope today and I'll start immediately!
₹12.500 INR på 14 dage
0,0
0,0

Hello, I can build a reliable middleware service to keep your server inventory perfectly synced with the POS in near real-time. I’m comfortable working with non-standard POS systems, including: Discovering undocumented APIs Reverse-engineering request flows Direct database (MySQL) inspection if allowed REST / WebSocket / polling-based solutions depending on feasibility How I’ll handle your flow POS Authentication – Secure login via API, token, session, or DB access Live Inventory Detection Webhooks or streaming if available Optimized polling with very low lag if not Data Transformation – Clean, structured JSON output Sync Delivery POST inventory updates to your endpoint Optional Excel/CSV export for reporting Deliverables Script/service that detects inventory after each sale or adjustment Live stock pull mechanism JSON payload sync to your server Optional Excel output Well-structured, documented code Tech Stack JavaScript (Node.js) REST API / JSON MySQL & database mapping Middleware architecture Inventory sync logic I’ll first analyze the POS setup file you shared, identify the best integration method, and then implement a stable solution focused on accuracy and speed. Looking forward to working with you. Let’s discuss access details and sync frequency. Thanks!
₹7.000 INR på 7 dage
0,0
0,0

Hi, This middleware task is very close to what I’ve already worked on, and I’d be glad to help you build it. I’ve been working on inventory sync logic in production systems, where stock updates from one platform must reflect accurately on another in near real time. I’ve handled inventory reconciliation, webhook listeners, polling fallbacks, payload transformation, and safe data pushes between systems — so your use case is something I’m very comfortable with. How I’d approach this • Authenticate securely with the POS (REST, GraphQL, WebSocket, or DB depending on what’s available) • Detect inventory changes using webhooks or lightweight polling if required • Normalize and transform the payload into clean JSON • Push updates to your endpoint or export structured Excel reports if needed I understand that the POS isn’t one of the common platforms, so I’m comfortable exploring undocumented APIs, reverse-engineering schemas if needed, and designing a stable sync layer around it. My recent work includes building custom inventory sync systems where stock levels must stay consistent across multiple systems after every sale or adjustment. Because of that, I believe I’m a strong fit for your case. I focus on reliability, minimal lag, and clean, maintainable code. Happy to discuss the POS details and design the sync architecture with you.
₹10.000 INR på 15 dage
0,0
0,0

Hyderabad, India
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