Development of Production ERP + Barcode Scanning System (Web + Android + Label Printing)

@Microlent

TRACEABILITY Hi, this is a full-scale ERP + traceability system—key risks here are duplicate scans, FIFO enforcement, and offline sync if not designed properly. I’ve built similar systems with inventory tracking and automation, and can deliver: Web ERP + Android scanning (Zebra/Honeywell compatible) End-to-end traceability (batch tracking, scan logs) Reliable offline sync + conflict handling Approach: Duplicate scans → DB constraints + validation FIFO → enforced at service + DB level Offline sync → queued sync with reconciliation Similar work: https://www.freelancer.com/u/Microlent Stack: React + Node/.NET + PostgreSQL + Android (Kotlin) Timeline: ~10–14 weeks Quick question: do you already have scanner + label format specs? Best, Rajesh

@rohitpatidar001

TRACEABILITY: With nearly a decade of experience developing comprehensive web and enterprise applications, I believe I am the ideal candidate for your Smart Production, Dispatch, and Traceability System. My strong suit lies in designing scalable, secure backends with .NET and Node.js. Moreover, my proficiency in deploying this system in SQL Server or PostgreSQL databases and on cloud platforms like AWS will ensure real-time and offlinexycchronization and enhance traceability. My experience successfully implementing barcode or QR scanning functionalities will prove particularly valuable－I have worked with Android handheld scanners such as Zebra and Honeywell to effectively integrate mobile scanning into production and logistics processes. Additionally, I'm adept at creating Master Data Management systems similar to your requirement that handles item masters' bulk imports via Excel (SAP format), manages diverse locations for traceability purposes, and enables stock-in-and-out validations based on scanning. Lastly, as an active supporter of API-based architectures, my capacity to deliver sophisticatedly interconnected systems will be instrumental during the development of your ERP for Production planning process alongside Sales Order Handling, Stock Transfer Module, Reporting system and most importantly the system's ability for unique tracking for each item/batch plus scan history

@Srashtasoft

TRACEABILITY Hi there, I have read your project requirement. You need a full-scale Smart Production, Dispatch & Traceability System with ERP (web), Android scanning app, cloud database, and optional desktop/label module, including production, inventory, sales order, stock transfer, reporting, and end-to-end traceability with offline sync and SAP-compatible exports. We can build this using a scalable architecture with React (frontend), Node.js or .NET (backend), PostgreSQL/SQL Server (database), and Kotlin-based Android app for handheld scanners. The system will be API-driven, support real-time + offline sync, barcode/QR workflows, and include strong validation logic (FIFO, duplicate scan prevention) with audit logs and secure role-based access. A few quick questions to proceed: ============================ Which SAP format/version should exports strictly follow (ECC / S4 HANA)? Do you already use specific scanner devices (Zebra/Honeywell models)? Should label printing be handled via web (PDF/thermal printers) or dedicated desktop module? What is the expected daily scan volume (approx.) for performance planning? Best Regards, Srashtasoft Team

@kamran2012

TRACEABILITY This looks like a great fit, I will build your Production ERP — web dashboard, Android scanning app, and label printing module — with real-time and offline sync, FIFO validation, and full lifecycle traceability per item and batch. For offline sync on handheld scanners, I will implement a local SQLite queue on the Android device that timestamps each scan, enforces duplicate prevention locally, then reconciles with the server via a conflict-resolution API once connectivity returns. This ensures warehouse staff never stall waiting for a network response — and no scan data is lost. Questions: 1) Which handheld devices will be used — Zebra, Honeywell, or another model — and do they have built-in barcode SDKs? Send me a message and we can go over the details. Best regards, Kamran

@b0b90

TRACEABILITY I’ve built and deployed production-grade ERP + warehouse systems with barcode/QR traceability, including Android handheld scanner integrations (Zebra/Honeywell), so this requirement aligns closely with my experience. For your system, I recommend a scalable API-first architecture using .NET Core (backend), React (web), Kotlin (Android app), and PostgreSQL (DB) hosted on AWS (RDS + EC2 + S3)—this ensures performance, flexibility, and long-term maintainability. For your key technical concerns: Duplicate scan prevention will be handled using a unique constraint + server-side validation + local device cache, ensuring scans are checked both offline and synced without duplication conflicts. FIFO validation will be enforced via batch-level inventory tracking with timestamp/GRN logic, and controlled bypass via role-based authentication (e.g., supervisor PIN/OTP logging). Offline sync will use a local SQLite DB on the Android device, with a queue-based sync engine that pushes data when connectivity is restored, resolving conflicts using timestamps and server rules. I estimate 10–14 weeks timeline (within your 8–16 week range), structured across milestones: planning → UI/UX → core ERP → mobile integration → testing → deployment. I’ll deliver full source code, API docs, DB schema, deployment setup, and admin panel, along with 2–3 months of support. .

@malviyamanish

Hello, My name is Manish, and I lead a team with strong experience in building ERP, inventory, and traceability systems with barcode/QR-based workflows. We can deliver your end-to-end platform covering web ERP, Android scanning app (Zebra/Honeywell compatible), and cloud backend with real-time and offline sync. Our approach focuses on a modular, API-first architecture for scalability and long-term maintainability. Proposed Stack Backend: Node.js (or .NET) Frontend: React Mobile: Android (Kotlin) Database: PostgreSQL / SQL Server Cloud: AWS / Azure Key Implementation Approach Duplicate Scan Prevention: unique batch IDs with server validation and local checks in offline mode FIFO Logic: batch-level tracking with rule engine and controlled override via role-based access Offline Sync: local storage with queued sync and conflict handling We’ve worked on similar systems involving production tracking, warehouse management, and handheld scanning devices, and can share demos during discussion. We will ensure secure delivery with full source code, documentation, NDA compliance, and post-launch support. Thank you, Manish

@OutsourceMan

TRACEABILITY As an accomplished developer with hands-on experience in ERP, Inventory, and Warehouse systems, I feel well-positioned to meet your requirements for a Smart Production, Dispatch & Traceability System. My team and I have successfully built similar systems in the past across widely-used technologies such as .NET, Node.js, React, Angular, and Android (Kotlin/Java). We have also worked extensively with handheld scanners that include Zebra and Honeywell in industrial environments. What sets us apart is our focus on scalability and security. Your system must support real-time and offline scanning sync and have an API-based architecture for adaptability. My team's completed projects bear testimony to our capabilities to meet these technical demands whilst delivering production-level functionality. You can count on us for designing a scalable and secure architecture that'll ensure 100% traceability for each item/batch throughout its lifecycle. Our long-standing experience doesn't end with just building the software, our support extends post-deployment too. In addition to expert testing based on my thorough understanding of your ERP needs or project administration and workflow, we also offer two to three months of free support after delivery along with long-term maintenance options that suit your enterprise's preferences. Looking forward to discussing how CnELIndia can make a difference in your industrial operations!

@vishal1145

TRACEABILITY Your FIFO validation logic will fail in real-world scenarios if you're not tracking batch timestamps at the millisecond level. I've seen production systems grind to a halt when two batches arrive within the same second and the database can't determine priority order. Before architecting this, I need clarity on two things: What's your expected transaction volume during peak shift hours - are we talking 50 scans per minute or 500? And does your current SAP instance support real-time API calls, or are we limited to batch file imports every few hours? Here's the architectural approach: - .NET CORE + POSTGRESQL: Build a multi-tenant ERP backend with row-level security that handles 10K concurrent scans without lock contention. Implement event sourcing for full audit trails. - ANDROID KOTLIN + ZEBRA SDK: Develop offline-first scanning with SQLite local cache that syncs via background workers. Handle network failures gracefully so production never stops. - AZURE SERVICE BUS: Queue all SAP exports through a message broker to prevent data loss during integration failures. Implement retry logic with exponential backoff. - DUPLICATE SCAN PREVENTION: Use Redis distributed locks with 30-second TTL plus database unique constraints on barcode + timestamp combinations. - FIFO VALIDATION: Implement a materialized view that pre-calculates batch age rankings, updated via triggers. Sub-200ms query response even with 100K active batches. I've built 3 warehouse management systems that processed 2M+ scans monthly. One handled pharmaceutical traceability under FDA 21 CFR Part 11 compliance. I don't take on projects where offline sync isn't bulletproof - let's discuss your network reliability and failover requirements before committing to a timeline.

@espsofttech

Hi there, TRACEABILITY We have recently delivered an ERP system for managing bank assets inventory where IT assets are tracked using barcode scanning, stock is maintained across multiple locations, and the full lifecycle of each asset is recorded — we can also show you the live demo. We also have experience with Android handheld scanning apps along with real-time and offline sync, so delivering your full-fledged production, dispatch and traceability system with web + mobile won’t be an issue. Since in this type of system the architecture plays a very important role, we will start with structuring the master data, production flow, and stock movement logic properly so everything (production → scanning → dispatch → reporting → traceability) stays consistent and scalable. Then we will move step by step into mobile scanning (with offline sync), FIFO validation, duplicate scan prevention using unique identifiers, and full traceability logs so each item/batch can be tracked end-to-end. We have delivered the bank asset system using React + Node with a scalable API-based architecture, which is running smoothly, so we would recommend a similar approach. We are comfortable with NDA, Git-based delivery, and milestone-based payments, and can also provide 2–3 months support post delivery. Would request to connect once so we can show you the live demo and then discuss your exact flow in detail, followed by proper BRD/FRD from our side. Thanks, Rahul A.

@kishanbwts

TRACEABILITY I’ve developed production and warehouse systems with barcode scanning and traceability features, including mobile scanning on Zebra devices and web-based ERP modules. One project involved handling FIFO rules, offline sync, and full batch lifecycle visibility, which improved accuracy and reduced delays. For your system, I suggest using Node.js backend with React frontend and an Android Kotlin app for the handheld scanners. PostgreSQL fits well for scalable, cloud-hosted data with AWS as the cloud provider. To prevent duplicate scans, I recommend a transaction log with scan timestamps and device/session IDs to detect repeats before committing data. For FIFO, we can enforce a location-based stock queue with auth override for exceptions, logged for audit. Offline sync can use local storage on devices, syncing in the background once connected, resolving conflicts by timestamps or user prompts. A rough timeline is 12 weeks: 2 weeks for requirements/UI, 6 weeks core development (ERP + mobile), 2 weeks testing/integration, and 2 weeks deployment/documentation. Could you clarify the scale: number of plants and daily scan volumes? This will help to size the backend and offline sync needs. Ready to start mapping out the details and assemble a solid project plan with you.

@ashinnd84

Hello there, we are a team of Full Stack Web Developers, Mobile App Developers and Data Scientist. Please, send me a message to discuss the work. Thanks Ashish Kumar.

@mahig47

Hello! TRACEABILITY As per your project post, you are looking to build a Smart Production, Dispatch, and Traceability ERP system with a web platform, Android scanning app, and barcode based lifecycle tracking for industrial operations. The goal is to create a reliable, scalable system that manages production, inventory, sales orders, stock transfers, and full traceability while integrating smoothly with SAP workflows. My focus will be on delivering a complete system including web based ERP for production planning, inventory, and reporting, Android app for barcode and QR scanning with real time validation, label generation with weight integration, sales order and stock transfer modules with FIFO logic, and a centralized cloud database. The system will also include full traceability with scan logs, duplicate prevention, lifecycle tracking, and SAP compatible import export features to ensure smooth enterprise integration. I specialize in building industrial ERP and traceability systems with barcode scanning and real time data processing, using scalable architectures and mobile integrations for warehouse and production environments. My focus will be on delivering a stable, efficient system that handles complex workflows without operational friction. Let’s connect to review your production flow, SAP format requirements, and hardware setup so we can define a clear architecture and phased implementation plan. Best regards, Nikita Gupta.

@belotefreelancer

TRACEABILITY" I have gone through your description. I'm a full-stack developer to take charge of backend, frontend, and deployment: database design, business logic, REST API, interface in React/Vue or equivalent technology, and implementation on a cloud provider with CI/CD pipelines "This is my area of specialization, i can get it done 100 % perfectly well. Please ping me in person. I can help you to complete all tasks. I have hands-on experience in this field. We have already done similar types of projects. Connect with us for more details. Rest assured your satisfaction is guaranteed." Looking forward to your response." Thank you for your time and I am confident that we will be a great fit for this project. Best,

@murtuza90

After carefully reading your full requirement, I’m confident we can deliver your Smart Production, Dispatch & Traceability System within the planned timeline. With 13+ years of experience, I will personally manage your project with my expert team. We understand you need a complete Web ERP + Android scanning app + cloud system covering production, inventory, dispatch, reporting, FIFO validation, duplicate scan prevention, offline sync, and full batch lifecycle traceability. Our expertise includes React, Angular, Node.js, .NET, Java, Kotlin, PostgreSQL, SQL Server, AWS, Azure, Barcode/QR systems, API architecture. Estimated timeline: 10–14 weeks. I’ve prepared a blueprint with scalable improvements for efficiency and future expansion. Can we connect?

@KarthikTechCon

Hi, I’m Karthik from Resonite Technologies with 15+ yrs building **ERP, WMS, barcode/QR systems, and industrial traceability platforms**. We’ve delivered production-grade solutions with **handheld scanners (Zebra/Honeywell), FIFO logic, offline sync, and SAP integrations**—aligned with your scope. **Proposed Stack** • Backend: .NET Core / Node.js (scalable APIs) • Frontend: React (ERP dashboards) • Mobile: Android (Kotlin) optimized for scanner devices • DB: PostgreSQL / SQL Server • Cloud: AWS/Azure **Key Approach** • **Duplicate scan prevention**: unique hash + server-side validation + local cache checks • **FIFO validation**: rule engine with override + audit trail • **Offline sync**: local SQLite + queue-based sync + conflict resolution • **Traceability**: batch-level lifecycle logs + scan history **Modules** ✔ Production + label/QR generation (weight integration) ✔ Sales orders + scan validation + delivery challan ✔ Stock transfer (scan-based in/out) ✔ Inventory + reporting + SAP export ✔ Full traceability with audit logs **Experience** Built ERP/WMS systems with **real-time + offline scanning**, inventory tracking, and industrial workflows. **Timeline** 10–14 weeks (aligned with milestones) **Deliverables** ✔ Web ERP + Android app + optional label module ✔ Full source code (Git), DB schema, APIs ✔ Deployment + documentation + 2–3 months support Happy to share demos/screenshots of similar systems. Best regards, Karthik Resonite Technologies

@UzeeTech

As a full-stack developer with over 7 years of experience, I have built end-to-end solutions for complex projects similar to what you are expecting for your industrial ERP and Traceability System. My expertise includes the use of AngularJS on the frontend, Node.js on the backend, PostgreSQL for database management, and, importantly, Android platforms. These technical skills align perfectly with your preferred technology stack, and I am confident in my ability to deliver a scalable, secure, and high-performing system. Importantly, I possess concrete experience in building ERP and Barcode systems specifically in Warehouse with traceability functionalities. This includes managing master data through bulk import/export of information such as item details, locations (with sub-location tracking), as well as handling stock transfer orders all while ensuring FIFO validation logic alongside unique tracking per batch/item. I understand that quality matters when it comes to robust systems, considering project duration might stretch up to 16 weeks; that's why my applications are always accompanied by a minimum of 2-3 months of post-delivery support should any issues arise. What sets me apart from other freelancers is not just an expertise in technologies you seek but also my zest for clean, documented and testable code- your next deve

@techsty2014

TRACEABILITY This looks like a great fit, I will deliver the web ERP (production, inventory, reporting) on .NET + React, Android scanner for Zebra/Honeywell with offline sync, label printing, SAP Excel import/export, and PostgreSQL on AWS. On the three asks: scans persist to SQLite with a client-generated UUID per event, then a batch API replays them in order when online. Duplicate prevention runs server-side on (item_serial, target_state). FIFO is validated at sync, conflicts flagged for auth-bypass override. Questions: 1) Handheld model (Zebra TC22, Honeywell CT40)? 2) SAP version for Excel format? 3) Self-hosted on your AWS, or our deployment? Looking forward to your response. Best regards, Faizan

@jagratip3

TRACEABILITY I have read the full requirement and understand you are looking for a production-grade Smart Production, Dispatch & Traceability System covering ERP web, Android scanning, and SAP-compatible exports with strict FIFO, batch traceability, and offline sync requirements. I have experience building similar industrial systems involving inventory management, barcode/QR scanning workflows, warehouse stock movement, and API-driven ERP modules with real-time synchronization. Proposed approach: • Backend: .NET Core or Node.js (microservice-ready API architecture) • Frontend: React for ERP dashboard with role-based access control • Mobile: Native Android (Kotlin) optimized for handheld scanners (Zebra/Honeywell support) • Database: PostgreSQL or SQL Server with indexed batch/trace tables • Cloud: AWS or Azure with containerized deployment Key implementation strategy: • Duplicate scan prevention: enforce unique constraint on batch + scan event table with server-side validation + device timestamp hashing • FIFO validation: implement queue-based stock allocation logic at database level using transaction locks to ensure strict order fulfillment • Offline sync: local SQLite cache on device with queued scan events, synced via retry-safe API with conflict resolution based on server sequence ID Estimated timeline: 8 weeks depending on final scope and UI approval. I can also share architecture examples and similar warehouse/traceability modules I’ve delivered upon request.

@TeamGTW

TRACEABILITY Hello! Based on your project description, you are looking to build a comprehensive production ERP and traceability system that includes a web-based platform, Android barcode/QR scanning app for handheld devices, and optional label printing integration, all connected to a scalable cloud backend with real-time and offline capabilities for industrial operations. I will focus on delivering a clean and scalable system using React for the web frontend, Node.js/.NET for backend APIs, and a robust Android app for handheld scanners with offline sync and real-time validation. The solution will include modules for production planning, inventory, sales orders, stock transfer, and full lifecycle traceability with duplicate scan prevention and FIFO validation logic. I will ensure seamless SAP-compatible imports/exports, secure authentication layers, and optimized database design (PostgreSQL/SQL Server) for performance. The architecture will be API-driven, cloud-deployed, and structured for long-term scalability, along with proper documentation, admin controls, and user-friendly workflows. I specialize in building enterprise-grade ERP and inventory systems with barcode scanning, real-time data processing, and production-level deployments. Please contact us to discuss your preferred workflow, hardware environment, and timeline so we can define the best approach. Best regards, Nikita Gupta