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I am a full-cycle SAP Business One (SAP B1) developer working on end-to-end solutions including SDK add-ons and SAP Business One integrations with external systems. My work covers requirement analysis, development using DI-API, UI-API and Service Layer, SAP HANA / SQL Server queries, deployment, and production support. I have hands-on experience with: • SAP Business One SDK (DI-API, UI-API, Service Layer) • SAP Business One Integrations & Automation • Custom SAP B1 Add-On Development • SAP HANA & SQL Server Reporting • E-Invoicing & Compliance If this all sounds good to you, click the message button and let’s chat (I’ll respond in <30mins if I’m awake). 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀: SAP, SAP Business One, SAP B1, SAP ByDesign, SAP ByD, SAP S/4HANA, SAP ECC, SAP HANA, SAP HANA DB, SAP HANA SQL, SAP Crystal Reports, SAP Fiori, SAP Fiori UX, SAP Fiori Apps, SAP Dashboards, SAP Pervasive Analytics, Boyum B1 Usability Package, B1UP, SAP Coresuite, SAP Xcelsius, SAP B1 SDK, DI API, UI API, Server DI API, B1i, B1i Integration Framework, SAP Service Layer API, REST API, SAP Add-ons, SAP Data Migration, Data Transfer Workbench, DTW, Copy Express, Solution Packages, LSMW, SAP Print Layout Designer, PLD, SAP Reporting, SAP Customization, SAP Workflow, SAP ABAP, SAP BADI, SAP Consulting,SAP Business One Developer, SAP B1 SDK Expert, SAP B1 Addon Developer, SAP Business One Integration Specialist, SAP Service Layer API Developer, SAP Business Technology Platform (BTP) Consultant, SAP S/4HANA Developer, SAP S/4HANA Cloud Extension Specialist, SAP S/4HANA API Developer, SAP Cloud SDK Developer, SAP CAP (Cloud Application Programming) Specialist, SAP RAP Developer, SAP Fiori Developer, SAP UI5 Developer, SAP Fiori App Developer, SAP Integration Suite Expert, SAP API Management Consultant, SAP Business One Customization Expert, SAP B1 API Integration Specialist, SAP B1if Integration Specialist, SAP Workflow Automation Expert, SAP Crystal Reports Developer (SAP B1), SAP Crystal Reports Customization Expert, SAP HANA SQL Developer, SAP HANA Cloud Developer, SAP HANA Optimization Consultant, SAP B1 Database Optimization Specialist, SAP Business One REST API Developer, SAP B1 Migration Specialist,SAP Business One (SAP B1) expert in SDK, DI API, UI API, Service Layer, B1if, HANA, Crystal Reports, DTW, PLD, integrations, custom add-ons, reporting, and data migration.

With over 8 years of professional software development experience, I specialize in delivering high-impact custom applications and seamless ERP integrations that drive real business results. My core expertise includes: 🔹 Custom Software Development Built over 15+ custom web applications using .NET Core, Angular, and SQL Server Created & consulted on MVPs for 3 startups, accelerating time-to-market by 40% Modernized legacy Webforms systems to .NET Core + Angular, improving performance by 60% 🔹 SAP Business One Integrations & Consultation Completed 12+ SAP B1 Integrations across industries (Retail, Manufacturing, Wholesale) Developed 3 SAP Add-ons for inventory management, reporting automation, and finance sync Integrated SAP B1 with platforms like Shopify, Amazon, eBay, Retail Pro, Salesforce, and custom CRMs /ERP's Delivered SAP-integrated POS Inventory Systems syncing over 10,000 daily transactions Launched SAP API Gateway used for different web portals & handling the integration between SAP Business One & Retail pro, used in 100+ branches Retail Store. Key Achievements: Enabled businesses to achieve up to 30% faster operational workflows with SAP automations Helped clients scale revenues by 20%-50% through integrated, real-time systems Managed seamless API integrations processing 50K+ records daily without downtime Whether you need a robust SaaS application, a custom ERP extension, or API integrations that scale with your business, I can deliver solutions built for reliability, scalability, and future growth. 📩 Let's connect to discuss how we can bring your project to life.

I’m Ahsan Hafeez, a Senior SAP B1 (SAP Business One) Technical Consultant & C# .NET Developer with over 8 years of experience helping global companies streamline operations, integrate ERP with e-commerce, and automate complex business processes. My focus is always on delivering measurable results, cutting costs, improving efficiency, and enabling growth. I specialize in SAP Business One customizations, ERP integrations, API development, and full-stack .NET solutions that empower businesses across retail, e-commerce, logistics, manufacturing, and healthcare. 🔧 Core Expertise ⚡ SAP B1 (SAP Business One) Development SDK Programming (.NET / C# / DI-API / Service Layer) Custom SAP BusinessOne Add-Ons & UI Enhancements Integrations: SAP Business One ↔ Shopify, WooCommerce, Amazon, Odoo, Salesforce, HubSpot SAP S/4HANA & HANA Cloud Connectivity 🔗 API Development & Automation RESTful API Design & Integration (ASP.NET Core / MVC) ERP, CRM & WMS Connectivity Middleware & Real-Time Data Sync End-to-End Business Process Automation 📊 Business Intelligence & Reporting SAP Crystal Reports (Dashboards, KPIs, Advanced Analytics) SQL Optimization & HANA Queries Power BI Data Visualization Automated Insight-Driven Reporting 💻 Full-Stack Development Web Apps: ASP.NET Core, MVC, C#, PHP, JavaScript, jQuery Frontend: HTML5, CSS3, Bootstrap Databases: MSSQL, SAP HANA, PostgreSQL, MongoDB ⚡ WooCommerce Development Custom Store Design & Development Theme Customization (Elementor, Divi, WPBakery, etc.) Plugin Development & Customization Secure Payment Gateway Integration (PayPal, Stripe, Authorize.net) ERP & API Integrations (SAP B1, Dynamics 365, Odoo, Salesforce, HubSpot) Maintenance, Security & Performance Optimization ⚡ E-Commerce Management End-to-End Store Setup & Configuration (WooCommerce, Shopify) Product Catalog Management (Bulk Uploads, Variations, Categorization) Order Processing & Inventory Synchronization Customer Accounts & Subscription Handling Shipping & Logistics Integration (DHL, FedEx, UPS, Royal Mail Click & Drop) Store Audits, Maintenance & Growth Strategy ☁️ Cloud & DevOps AWS (Lambda, EC2, S3) & Microsoft Azure Git, CI/CD Pipelines & Deployment Automation 💡 Why Clients Work With Me ✔️ Top Rated Plus – Among the top 3% of talent on Upwork ✔️ ERP Specialist – SAP B1, Integrations & Automation focus ✔️ Proven Track Record – 100% Job Success & consistent ⭐⭐⭐⭐⭐ reviews ✔️ Business Impact – I deliver solutions that cut costs, improve efficiency & scale operations 🚀 What You’ll Gain ✅ Streamlined ERP workflows & processes ✅ Secure, future-ready integrations ✅ Real-time insights with dashboards & reporting ✅ Scalable solutions designed for growth 📩 Let’s Connect! If you’re looking for an SAP Business One (SAP B1) Consultant, ERP Integration Expert, or Full-Stack .NET Developer, I’d love to help. I also offer a FREE 30-minute consultation to understand your goals and suggest the best solution. Best regards, Ahsan Hafeez SAP Business One | ERP Integrations | API Development | .NET C# Developer 🔑 Keywords: SAP Business One, SAP B1, SAP B1 SDK, SAP DI API, SAP Service Layer, SAP B1 Integration, SAP Crystal Reports, SAP HANA, SAP HANA Cloud, SAP S/4HANA, SAP ERP, ERP Automation, API Development, Middleware, Custom Add-On Development, RESTful APIs, SQL Server, Database Optimization, Shopify Integration, WooCommerce Integration, Amazon Vendor Central, Salesforce Integration, Odoo Integration, HubSpot Integration, Business Intelligence, Power BI Reporting, SAP Troubleshooting, Workflow Automation, SAP, SAP ByDesign, SAP ByD, SAP ECC, SAP HANA DB, SAP HANA SQL, SAP Fiori, SAP Fiori UX, SAP Fiori Apps, SAP Dashboards, SAP Pervasive Analytics, Boyum B1 Usability Package, B1UP, SAP Coresuite, SAP Xcelsius, UI API, Server DI API, B1i, B1i Integration Framework, SAP Service Layer API, REST API, SAP Add-ons, SAP Data Migration, Data Transfer Workbench, DTW, Copy Express, Solution Packages, LSMW, SAP Print Layout Designer, PLD, SAP Reporting, SAP Customization, SAP Workflow, SAP ABAP, SAP BADI, SAP Consulting, SAP Business One Developer, SAP B1 SDK Expert, SAP B1 Addon Developer, SAP Business One Integration Specialist, SAP Service Layer API Developer, SAP Business Technology Platform (BTP) Consultant, SAP S/4HANA Developer, SAP S/4HANA Cloud Extension Specialist, SAP S/4HANA API Developer, SAP Cloud SDK Developer, SAP CAP (Cloud Application Programming) Specialist, SAP RAP Developer, SAP Fiori Developer, SAP UI5 Developer, SAP Fiori App Developer, SAP Integration Suite Expert, SAP API Management Consultant, SAP Business One Customization Expert, SAP B1 API Integration Specialist, SAP B1if Integration Specialist, SAP Workflow Automation Expert, SAP Crystal Reports Developer (SAP B1), SAP Crystal Reports Customization Expert, SAP HANA SQL Developer, SAP HANA Cloud Developer, SAP HANA Optimization Consultant, SAP B1 Database , SAP Business One REST API Developer

✅ Successfully delivered 80 SAP projects across the globe, ✅ Over 6000+ hours of SAP Consultancy on Upwork ✅ Successfully Integrated more than 30 B2B SaaS based Startups with SAP in last one year 🏆 TOP RATED PLUS I am a Techno-Functional certified SAP professional with overall 20 years of experience in ERPs and more than 15 years of all-round functional and technical expertise in SAP HCM, SAP MM, SAP FICO, SAP SD, SAP BTP and SAP ABAP.. I am PMP Certified and have 6 years of Project Management Experience.  - More than 30 SAP to Non SAP Integration Projects using BTP, CPI, REST APIs and RFC.  - Three end-to-end S4HANA Implementations and the overall completed 4-life cycle of SAP  - Four end-to-end SAP S4HANA S4HANA Migration projects  - 8 Years of Project Management Experience (PMP Certified) My track record speaks for itself, having successfully implemented/Integrated SAP ERP solutions for ✅Fresh DelMonte in USA ✅Seplat Energyi in Nigeria ✅Vic.ai in USA ✅Procore in USA ✅CloudSolutionIT in Australia ✅DaasLabs in UK ✅SuperNova in Singapore ✅Midge Medical in Germany ✅CashFlo in India ✅Xceleon in USA ✅TruSaic in USA ✅TechGier in UK ✅Holocene in USA ✅Remydne in Germany ✅Nsight in USA ✅iMocha in India ✅Elevatus in Jordon ✅LINK4 in Australia ✅Bayne Law in USA ✅AccessOneBR in Brazil ✅DawaTech in Jordon No project is too big or too small for me, and I am committed to treating each project with fairness and seriousness. Don't let SAP ERP implementation and integration challenges hold your business back. Contact me today to share my skills, enthusiasm, and experience, and let's drive your business to success!