You will get REST API development or integration for your web app
Project details
I develop, fix, and integrate REST & SOAP APIs for web and mobile applications using clean architecture and business-focused logic. Whether you need a new backend endpoint, third-party API integration, authentication flow, webhook handling, or help debugging an existing API issue, I can deliver a stable solution built for production use. I work with .NET, C#, PHP, Laravel, Node.js, SQL Server, MySQL, and real-world business workflows, so I can handle both technical implementation and process logic.
Programming Languages
PHP, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$100
|
Standard
$450
|
Advanced
$1,000
|
|---|---|---|---|
| Delivery Time | 2 days | 5 days | 10 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 1 | 1 | 6 |
Design Customization | - | - | |
Content Upload | - | - | |
Responsive Design | - | - | - |
Source Code |
Frequently asked questions
15 reviews
(14)
(0)
(1)
(0)
(0)
This project doesn't have any reviews.
LA
Leyla A.
May 13, 2026
Providing training on application integration, configuration, and billing.
AV
Ashwani V.
Jan 6, 2021
SAGE 300 - Invoice Data upload thru API
Prompt and timely delivery.
SH
Souren H.
Oct 17, 2020
Sage Web API Integration with Customized e-Comm Web App
A great person to work with. Reliable, supportive, and delivered what he promised successfully, I will be working with him again.
NC
NICHOLAS C.
Mar 2, 2020
Management of .asp and .php files for website hosted on Windows server
MA
Mustafa A.
Nov 11, 2019
Medical Billing app conversion from Desktop to Web
About Fawaz
ERP & API Integration | Sage 300, QuickBooks, AI | Full Stack Dev
Lahore, Pakistan - 4:13 am local time
Specialized in Sage 300, QuickBooks integrations, AI automation, and scalable enterprise solutions.
"Dream it, and I will turn it into a fully functional application!"
A detailed Intro:
A results-driven, customer-focused, and highly motivated Senior Software Engineer with over 25 years of experience in desktop software and web development. Adept at designing, integrating, and optimizing business solutions, I specialize in building scalable applications tailored to various industries' needs.
My expertise lies in software architecture, business analysis, and cross-platform development. I have a proven track record of delivering customized management solutions across diverse sectors, including:
• Inventory Management (Purchasing & Procurement)
• Financial Accounting & Reporting
• Sales & Billing
• Payroll Management
• Trading & Point of Sale (POS) Solutions
• Donation Management Systems
• Manufacturing & Work-in-Progress (WIP) Solutions
• Scheduling Solutions for ABA Clinics (Availability, Appointment & Billing)
• Field Service Management (Work Orders, Warranty, Parts & Returns)
ERP & API Integrations:
I have successfully integrated enterprise solutions with QuickBooks and Sage ERP and developed several field service and work order add-ons for Sage ERP 300. My technical expertise includes developing extensive management applications using:
• ASP.NET / C# / MVC5
• PHP / WordPress / MySQL
• Node.js / AngularJS / JavaScript / jQuery / CSS
• RESTful & SOAP APIs (Amazon, Walmart, Best Buy, etc.)
• Sage 300 ERP & CRM (Web API, SData API, Sage SDK)
• Avalara's Avatax API integration for Sage 300 ERP and Customized apps
• QuickBooks API
• iOS & Android App Development (XCode, Android SDK)
• Microsoft SQL Server & Azure Servers
• Sage 300 Crystal Reports Customization
My hourly rate is negotiable depending on the project scope. For fully specified management solutions, I prefer fixed-price engagements. I am flexible with time zones and can align with your schedule if needed.
AI & Automation Expertise:
As AI and automation revolutionize software development, I am actively leveraging AI technologies to enhance business processes, data management, and ERP integrations. My expertise includes:
• AI-Powered Copilot for Automation – Setting up AI copilots to assist with repetitive tasks, enhancing efficiency in software development and business operations.
• Microsoft Power Automate Solutions – Automating workflows for ERP systems, QuickBooks, and Sage 300, reducing manual intervention and improving accuracy.
• Proprietary AI Chatbots – Developing intelligent chatbots that interact with users, providing instant responses based on proprietary or company-specific data.
• AI-Based Data Entry & Reconciliation – Automating data entry and reconciliation processes in QuickBooks, Sage 300, and other ERPs using AI-driven OCR and NLP models.
• Predictive Analytics & Reporting – Integrating AI to analyze financial trends, inventory levels, and sales patterns for smarter decision-making.
• Conversational AI for ERP Users – Deploying AI-driven voice and text assistants for seamless interaction with database management systems and ERPs.
• Automated Invoice Processing – Using AI to extract data from invoices and auto-post transactions into QuickBooks and Sage ERP.
• AI-Enhanced Fraud Detection – Implementing machine learning models to detect fraudulent transactions in financial management systems.
• AI-Powered Document Management – Automating document classification, search, and retrieval within ERP and CRM platforms.
• Smart Scheduling & Resource Allocation – AI-driven scheduling tools for field service management and healthcare clinics to optimize resources and appointments.
By integrating AI into ERP and database management systems, I help businesses automate workflows, improve efficiency, and drive intelligent decision-making.
I am open to collaboration on AI-driven solutions tailored to your business needs. Let's discuss how AI can revolutionize your operations!
Steps for completing your project
After purchasing the project, send requirements so Fawaz can start the project.
Delivery time starts when Fawaz receives requirements from you.
Fawaz works on your project following the steps below.
Revisions may occur after the delivery date.
Review your API requirement
I analyze your current application, API goals, architecture, and technical constraints.
Design endpoints and flow
I define the request structure, validation, auth, business logic, and data handling strategy.