Hire the Best POS Terminal Development Specialists

Integrated systems rarely break on the first successful API call. They break three weeks later: a failed Shopify webhook, an ERP order that never synced, a CRM contact missing from the pipeline, or POS inventory that no longer matches the store. I build and fix the middleware/API layer behind those systems. My strongest work is around Shopify, ERP, CRM, POS, and Laravel-based backend systems where product data, orders, inventory, customers, payments, and reporting all need to stay aligned. What I usually handle: - Shopify / Shopify Plus integrations and custom commerce workflows - ERP and CRM syncs: Acumatica, Salesforce, Zoho, HubSpot, SAP-style systems - POS and inventory workflows: Clover, store operations, loyalty, order flows - Laravel/PHP middleware, APIs, webhooks, queues, cron jobs, retries, and logs - Admin dashboards, reporting panels, and operational data models - Production debugging where the issue is hidden across multiple systems Relevant background: - Built and supported systems handling 24k+ products, 3M+ users, and 2,000+ locations - Led technical delivery across teams of 20+ - Worked across Shopify, Shopify Plus, Magento, BigCommerce, Acumatica, Salesforce, Zoho, Clover POS, Laravel, REST/GraphQL APIs, PostgreSQL, MySQL, AWS, Firebase, and payment systems I also take on SaaS MVPs and React Native app work when the project depends on backend architecture, integrations, subscriptions, analytics, or production stability. If your store, ERP, CRM, POS, or internal dashboard is held together by fragile syncs and unclear data flow, I can help trace where it breaks and make the system reliable.

Senior Software Architect specializing in secure systems and IoT Sec solutions with 15+ years of experience. I architect and deliver end-to-end nfc solutions, from embedded firmware to cloud-based backend systems. 🎯 CORE EXPERTISE IOT Systems - NFC Solutions: Reader/Writer, HCE, Digital Wallets (Android/iOS) - Smart Cards: JavaCard, MIFARE, DESFire, NTAG,Global Platform,GP,JCOP,Secure Element - Security: PKI, FIDO, Secure Element,HSM, PCI-DSS Compliance - RFID Systems: Asset Tracking, Access Control - EMV Payment: L1/L2/L3 Kernel Development & Certification - Microcontrollers: ESP32, STM32 (WiFi/BLE, RTOS) - Firmware: Secure Bootloader, OTA Updates, Real-time Systems - Industrial Applications: POS Terminals, Vending Machines, Access Control - IoT Architecture: Sensor Integration, Remote Management Full-Stack Development - Backend: Node.js, REST APIs, Database Design (SQL/NoSQL) - Cloud Services: Firebase, AWS/Azure/GCP Deployment - Mobile: Android (NFC APIs), iOS (CoreNFC), React Native - Desktop: Qt, .NET, Cross-platform Applications - Languages: C/C++, JavaScript/TypeScript, Java, C# 💼 SIGNATURE PROJECTS ✅ ESP32 IoT Systems - Created NFC-enabled payment solution with cloud integration - Built secure firmware with OTA update capabilities - Integrated Firebase for real-time data synchronization ✅ Cross-Platform Digital Wallet - Developed mobile wallet supporting EMV contactless payments - Implemented HCE and Secure Element integration - Built Node.js backend with Firebase authentication ✅ Enterprise RFID Solutions - Designed asset tracking systems for industrial clients - Implemented access control with NFC/RFID readers - Deployed cloud-based management platform ✅ EMV Payment Terminal Solutions - Developed EMV L2 & L3 kernel for contact/contactless terminals - Achieved EMVCo certification for payment applications - Implemented secure key management and transaction processing 🔧 TECHNICAL STACK Hardware: ESP32, STM32, NFC Readers, RFID Systems Backend: Node.js, Express, Firebase, REST APIs Database: MongoDB, PostgreSQL, MySQL, Firestore Cloud: Firebase, AWS, Azure, Docker deployment Mobile: Android, iOS, React Native Desktop: Qt, .NET, Windows/Linux Security: PKI, FIDO, PCI-DSS, Secure Boot 📋 CERTIFICATIONS & STANDARDS EMVCo, PCI-DSS, PBOC, Global Platform, ISO 14443 I deliver production-ready solutions with clean code, comprehensive documentation, and ongoing support. Available for both fixed-price projects and long-term contracts.

I help businesses build reliable, scalable communication systems and web applications by combining deep expertise in VoIP (3CX & Yeastar) with full-stack development and API integrations. With 6+ years of experience in 3CX, hands-on expertise in Yeastar Cloud PBX, and 3+ years in full-stack development, I specialize in delivering end-to-end solutions — from telephony infrastructure to CRM integrations and custom dashboards. 🔥 What I Can Do For You ☎️ VoIP & PBX Solutions (3CX + Yeastar) 3CX setup, configuration & troubleshooting (V18/V20) Yeastar Cloud PBX deployment & management SIP Trunk integration (Twilio, Telnyx, Flowroute, etc.) IVR, Call Queues, Ring Groups, Call Routing Predictive / Progressive Dialer setup Call recording, reporting & analytics Multi-tenant PBX architecture DID management & call flow optimization 💻 Full Stack Development Backend: PHP, Node.js, Golang Frontend: JavaScript, HTML, CSS, Bootstrap, Tailwind Database: MySQL, PostgreSQL Build scalable CRM systems & dashboards WebRTC / SIP dialer development Real-time systems & automation workflows 🔗 API Development & Integrations (Swagger/OpenAPI) REST API design & development Swagger/OpenAPI documentation CRM integrations (Zoho, Salesforce, Monday, etc.) Webhooks, automation, and data sync systems 🌐 WordPress Development Custom theme & plugin development Website optimization & speed improvements API integrations with WordPress Business websites & landing pages 💡 Why Clients Choose Me ✔ 6+ years in VoIP & telephony systems ✔ Strong backend + infrastructure understanding ✔ Fast troubleshooting & problem-solving ✔ Clean, scalable, production-ready solutions ✔ Excellent communication & long-term support 📌 Recent Work Highlights Built multi-company 3CX dialer system with CRM integration Deployed Yeastar Cloud PBX for international clients Developed VoIP analytics dashboards & call tracking systems Integrated Twilio / Telnyx with custom applications Created API-driven automation workflows using webhooks 🎯 Let’s Work Together If you need help with: Setting up or fixing your 3CX / Yeastar PBX Building a custom dialer or VoIP system Integrating APIs or CRM systems Developing a scalable web application 👉 Send me a message — I’ll provide a clear solution quickly.

Hi I’m Usman, a 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗲𝗱 𝗢𝗱𝗼𝗼 𝗘𝘅𝗽𝗲𝗿𝘁, Integration and Customization 𝗦𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘀𝘁 and 𝗢𝗳𝗳𝗶𝗰𝗶𝗮𝗹 𝗢𝗱𝗼𝗼 𝗣𝗮𝗿𝘁𝗻𝗲𝗿. With over 8 years of hands-on experience i help businesses streamline, scale and automate their operations using Odoo ERP (Community & Enterprise). I’ve successfully delivered 140+ Odoo implementations across industries including manufacturing, logistics, retail, healthcare, construction, food and beverage, agriculture, automotive, technology, mining and finance and tax. Core expertise but not limited to: = Odoo setup, customisation and module development = Functional consulting across Sales, CRM, Accounting, HR, Inventory, POS, Fleet, and Manufacturing and MUCH MORE = Third-party integrations (payment gateways, CRMs, eCommerce platforms, APIs) = Migration, optimization and long-term maintenance of Odoo environments = Clean, scalable architecture built for growth and reliability From Odoo setup and module development to third-party integrations and ongoing system optimization, I provide comprehensive solutions that drive efficiency, improve workflows, and ensure long-term success. My focus is on building scalable, reliable Odoo systems that are tailored to specific business needs, helping large companies and small startup to achieve growth and operational excellence. My go-to approach: - I focus on delivering complete, business-ready Odoo systems, not just modules. - Every solution is designed to improve efficiency, visibility and scalability, ensuring your workflows and data stay connected across departments. Lets connect to discuss more over a quick call

GIS Data Specialist | Mapping Results-driven GIS Professional with over 8 years of experience delivering high-accuracy spatial solutions across private and public sectors. Expert in the end-to-end GIS lifecycle, from raw data capture and LiDAR processing to the management of complex geodatabases. Proven track record in streamlining data workflows and producing high-quality cartographic outputs for large-scale infrastructure and mapping projects. Core Technical Expertise GIS Systems: Advanced proficiency in ArcGIS Pro/Desktop, QGIS, and Google Earth. Data Management: Expert in database construction, normalization, and validation to ensure "single source of truth" integrity. Remote Sensing: Specialized experience in Point Cloud operations and processing raw LiDAR data. Production: Skilled in rapid map production, data migration, and cross-platform formatting.

I help fintech startups, neobanks, and payment companies build secure, scalable products, from digital banking platforms and core banking systems to POS terminal software and payment gateway integrations. With strong experience across the full stack, I deliver end-to-end fintech solutions that are compliant, reliable, and built to scale. What I build: • Digital Banking & Neobank SaaS platforms (onboarding, KYC/AML, wallets, ledgers) • POS Terminal Solutions (Android POS, payment terminal apps, card processing) • Payment Gateway & API Integrations (Stripe, PayPal, ACH, card networks) • Core Banking Systems & financial dashboards • Secure REST APIs, microservices, and cloud-native architecture • B2B Sales outreach AI SAAS Platform just like Instantly • Food Delivery Platform Tech stack: Frontend: React, Next.js, TypeScript Backend: Node.js, Python, Java Database: PostgreSQL, MySQL, MongoDB Cloud/DevOps: AWS, Docker, Kubernetes, CI/CD I focus on security, PCI-DSS-aware development, and clean architecture so your fintech product is ready for real users and real transactions. Let’s discuss how I can help bring your digital banking or POS terminal project to life. Message me to get started.