Hire the Best W3C Widget API Specialists

Experts in API Integration and Integration Architecture for complex business systems. When business systems must exchange data reliably, simple API connections are rarely enough. We design and build production-grade API integrations connecting ERP, CRM, e-commerce platforms, and internal systems — focusing on reliability, observability, and long-term maintainability. Our work centers on custom integrations that support real business operations, not fragile scripts or quick automation hacks. 🧩 What We Do 🔹 API Integration & System Connectivity Design and implementation of reliable API integrations between ERP, CRM, e-commerce, marketing, and internal systems using REST APIs, webhooks, and secure authentication. 🔹 Integration Architecture Design of robust integration architectures including data synchronization strategies, retry logic, monitoring, error handling, and long-term maintainability. 🔹 On-premise Integration Platforms Custom API integration hubs deployed on your infrastructure (Laravel / PHP), including scheduling, logging, monitoring, and full operational control. 🔹 API Development & Consulting End-to-end API development: REST API design, OAuth authentication, webhook processing, multi-system integration strategies, system audits, and integration consulting. 🔹 Data Synchronization Reliable data pipelines between ERP, CRM, analytics, and internal systems with validation, monitoring, and recovery mechanisms. ⚙️ Our Strengths ✅ Strong focus on API integration for complex business workflows (finance, e-commerce, logistics, marketing operations) ✅ Production reliability by default — logging, retries, monitoring, and alerts included ✅ Security-first architecture suitable for on-premise and private cloud deployments ✅ End-to-end ownership — from architecture and API development to deployment and long-term support 🧠 Tech Stack Languages & Frameworks: Laravel / PHP / Node.js / Python Integration Technologies: REST APIs, Webhooks, OAuth, event-driven integrations Platforms & APIs: HubSpot, QuickBooks Online, Xero, Shopify, Acumatica, BigCommerce, Airtable, Slack, Notion, Google Workspace Infrastructure: AWS, DigitalOcean, Docker, Linux 🌟 Why Clients Choose QPMSoft 💼 $400K+ earned on Upwork | 100% Job Success | 10+ years building integration systems 🤝 Clear communication, fast response times, and realistic expectations 🚀 Flexible engagement models — from focused API integrations to long-term integration platforms Whether you need API Integration, custom API Development, or reliable system integrations between ERP, CRM, and e-commerce platforms, we focus on building systems that are stable, maintainable, and production-ready.

Most developers finish the task, ship it, and move on to the next contract. I don't work that way, I stay on the problem until the solution actually satisfies what you set out to build, not just the version that technically closes the ticket, but the one you're still running next year without a rebuild. 6+ years working in PHP and Laravel across SaaS platforms, e-commerce systems, and custom WordPress backends. I've shipped 450+ projects and I maintain open-source Laravel packages actively used by other developers... that's not a line on a resume, you can read the code on GitHub before you hire me. What I actually work on... ✓ Laravel SaaS backends... multi-tenant architecture, billing integrations (Stripe, PayPal), job queues, real-time features with Reverb or Pusher ✓ RESTful and headless API development... versioning, authentication (Sanctum, Passport, JWT), third-party integrations, and passive contract monitoring so integrations don't silently break ✓ WordPress... custom plugins, hook architecture, WooCommerce extensions, REST API bridges between WP and Laravel systems ✓ Performance and refactoring... I regularly take over legacy Laravel codebases, add test coverage, resolve N+1 issues, and modernize to current standards without breaking production ✓ E-commerce... order pipelines, multi-channel inventory (Shopify, WooCommerce, Amazon, Etsy), payment gateway integrations A few things I've shipped publicly.. Built a multi-channel notification engine for Laravel 12 with parallel dispatching and smart routing. A static analysis tool that catches dangerous migrations before they hit production. A passive API contract monitor that detects breaking changes in third-party REST APIs using probabilistic inference. These aren't portfolio pieces.. they're tools other developers use. On working with AI... Yes, I use AI tools in my workflow. The difference between a developer who uses AI well and one who doesn't is knowing what to verify, what to question, and what to never let near production without review. My open-source work exists partly because I kept running into problems that AI-generated boilerplate can't solve. Who I work well with.. Founders and technical leads who know what they want to build but need someone who can own the backend without constant hand-holding. If you have a spec, I'll ask the right questions and deliver clean, documented code. If you have a problem, I'll figure out the architecture. Available for fixed-price projects and ongoing contracts. Response time is fast.. usually within 10 minutes

Hi. I am ready to write your project Write apps on your demand in many languages (Visual Basic, VBA, VBS, .NET, C#, JS, Python, Java, PowerShell) Write database apps including many db formats: MS Access, MS SQL, SQL Server, MySQL, SQLite, PostgreSQL, Firebird Write Automation apps including: * Automation Desktop apps. Some examples: Automation Playing Games, Automation Start/Stop/Click 3rd party apps * Automation Web apps. Some examples: Automation Web Scraping apps, Automation Web Crawling apps * Automation Data Processing apps: Automation formatting data to a specified template * Automation Data, Document Converting apps * Automation Macro, VBA for all apps in MS Office (Excel, Word, Outlook), OpenOffice, GoogleSheet * Automation Installers/Setups * Convert your Manual tasks to Automation solutions Write Web Service, Web API, Desktop API apps. Some examples: Google API, Bing API, Facebook API, MS API Fix/Solve any errors in your OS, apps

Build a WooCommerce Store That Grows Your Business, Not Your Problems As a Top Rated Plus developer with a 100% Job Success Score, over $100k+ earned on Upwork, and 8+ years of dedicated WordPress/WooCommerce experience, I build scalable eCommerce solutions that are clean, reliable, and easy to maintain. With 8+ years of experience in WordPress and WooCommerce development, I build scalable eCommerce solutions that are clean, reliable, and easy to maintain. 𝐖𝐡𝐚𝐭 𝐈 𝐜𝐚𝐧 𝐡𝐞𝐥𝐩 𝐲𝐨𝐮 𝐰𝐢𝐭𝐡: ✅ Custom WooCommerce Development ✅ Custom Plugin Development ✅ WordPress Theme Development ✅ Payment Gateway Integration ✅ REST API & Third-Party API Integration ✅ WooCommerce Checkout Customization ✅ Store Performance & Core Web Vitals Optimization ✅ Bug Fixes & Troubleshooting ✅ Store Migration & Upgrades ✅ Subscription & Membership Websites ✅ Multivendor Stores ✅ Custom Shipping & Tax Logic ✅ Security & Maintenance I focus on writing clean, maintainable code and delivering solutions that work reliably as your business grows. My goal isn't just to complete tasks. it's to build long-term relationships by providing dependable development and clear communication. If you're looking for a WooCommerce developer who understands both the technical side and the business goals behind an online store, I'd be happy to discuss your project. Let's build something great together.

I am a full-stack PHP web developer with more than 14 years of experience in web development and API integration.I develop web applications using PHP, MySQL, WordPress, and Laravel.My goal has always been to create websites that are not only highly functional but also completely focused on the needs of the client . I have successfully integrated over 300 APIs globally, which has equipped me with expert skills in API integration.Here are some of the API integrations I have successfully completed. Api Development : Housecall Api integration , Jot Form api , Jobs api Avionté API , Redtail Api , lovable ai , Infusionsoft Api , Ebay Api , Cj Api  , Linkshare Api  . Adbutler Api  . Shopping Api , twitter Api , Instagrame Api , Quickbook Api  , Quickbase  Api  ,Small2invoice Api  , Zoho Api  , whereismypartnersApi  , Shopify Api ,Saasu Api , Xero Api ,Facebook Api , Linkedin Api , Zoho Crm and Zoho Api , Odoo Api , HubSpot Api , OntraPort  Api ,Contact Contact APi , Insighlty Api  , Constant Contact Api , Discogs Api , MyobApi , Infusionsoft Api , Shipit Api , Unleashed Api , paymeapi Api , OneSignalApi , Qualtricsapi ,  Yodlee  Api , Discogs API ,Qualtrics api ,webtickets Api, RunSignUp  API , spotifyApi , Spyfuapi ,  Active Campaign Api , Teamleader Api,  Litmos API , Billing orchard Api , Zapier  Api, Woocommerce Api , ActiveCampaign Api Freshdesk api , Api Developer , ChargeBee Api , Magento api , zapierapi , garminapi , GoHighLevel CRM , Fitbitapi , securionpayapi , Parcel Pro API , trybookingApi Booqable api , Commcare Api , Angaza API , escrow, Commcare Api , Angaza Api . ProcoreApi , totalexpert Api , filevine Api , bamboohrapi , bisweb api , data cityofnewyork, hubstaffapi , Phone Wagon API ,Go Highlevel API , payleadrApi ,  Quickbooks Api, Xero api , MyOb api ,spyfuapi , Reckon api debitsuccess Api  , activecampaign automation , fieldroutesapi , Capsule CRM Api , Inventory Planner API , SKUSavvy Api , Capsule CRM , GoHighLevel ,Hubspot api , FieldRoutes , klaviyo , bookeo api , Elevenlabs Api , GoHighLevel api , GHL api , Usps , Ups , Fedex shipengine, Parcel Pro Api ,Google Sheets Automation , GoHighLevel Automation , Google Apps Script integration with Api. Specialist in the following domains:     - Front End development , Back-end development, Full Stack PHP, Laravel, CodeIgniter, Cakephp.     - Shopify, WordPress, Webflow, Custom Wordpress Plugin , Custom Wordpress Theme. - Wordpress widget development, Created Leaderboard by using the 3rd party api data     - Wordpress Custom plugin and Wordpress themes development , Wordpress Api integration       - Wordpress Woocommerce orders and customer synch with 3rd party site   - n8n Workflow automation , SuiteDash customization ,Website development in the Lovable Reasons to select my services: - I possess a demonstrated history of producing high-quality work. - I offer clients continuous support following the project's completion. Should we collaborate, I am dedicated to delivering high-quality work efficiently. After completing a project, I offer continuous support to ensure the applications are error-free and highly adaptable for end users. Feel free to reach out with any inquiries, and I will respond promptly..

I build the custom interactive logic that off-the-shelf WordPress and page builders cannot: calculators, quote and pricing configurators, multi-step wizards, and persona-routing tools, backed by clean full-stack code. It is my highest-converting work and the reason clients come back with the next project. I'm Chris, a senior full-stack developer based in South Africa (GMT+2), with strong overlap on EU and US hours. I think through architecture, edge cases, and long-term maintainability. Clients have called me "a thinking developer who anticipates needs" and described my work as "exceptional precision and judgment". Verticals I work in most often: SMB payments and checkout, NGO and purpose-driven platforms, sport-performance and education tools, and small-business sites that need to actually convert. What I do, ranked by revenue and fit: • Custom JavaScript logic, calculators, and interactive tools. A $2,000 custom financial platform with persona routing, JS calculators, and LiteSpeed tuning (5.0 stars, "restructuring site architecture, committed to quality"). You can click and try three live demos from my portfolio: a real-time pricing engine, a multi-step loan eligibility calculator, and a subscription pass with QR redemption built on Stripe. This is my highest-converting lane. • Full-stack feature work in existing codebases. A 152-hour senior full-stack engagement on a vanilla PHP, JavaScript, and PostgreSQL codebase ($5,320): features, experiment plumbing, and integrations. I own problems inside custom themes and frameworkless stacks, not just configure plugins. • WordPress plus custom JS and Elementor builds. Brochure, form, and subscription sites with real checkout (5.0 stars), site architecture restructuring, and CMS-editable custom logic so the client can manage values themselves. • WordPress rescue: theme migrations, PHP upgrades, bug fixes. Migrated a site off a discontinued theme onto a maintained one with a PHP 7.4 to 8.2 upgrade, delivered in under a week (5.0 stars, "excellent from start to finish... delivered on a tight timeline"). Staging first on WP Engine or Flywheel, full backup, automated browser tests before go-live, honest about tradeoffs. • Stripe payment integrations and GA4 conversion tracking. Stripe discount-code logic on a live payments page (5.0 stars, "fast and effective, most efficient solution") and server-side GA4 conversion tracking for Stripe on WordPress. The pattern: webhooks, signature verification, server-side reconciliation, documented handover. • New product builds beyond WordPress: Supabase, Vue 3, and Next.js. I work in Vue 3 daily, React transfers directly, and I build Next.js apps with modern tooling and Claude Code. For clients who need a real product, not a brochure. Deployed on Vercel with clean TypeScript. • Carrd microsites and UX fixes. Dynamic microsite plus scroll and anchor fixes across two phases for the same client (5.0 stars both, "operates with exceptional precision and judgment", "delivered beyond expectations"). A niche specialty, on request. • Fixes, refactors, and audits. WordPress and Divi work (5.0 stars, "He was fantastic"), Supabase and Vercel restore, SEO redirects, and AI-assisted code review. How I work: • Day 1 to 2: read the brief twice, ask the sharp questions, write a short scope doc with milestones and a flat estimate. • Week 1: first working increment deployed to staging or a preview URL. Never silence. • Ongoing: short async updates with screenshots, blockers flagged within a working day, clean Git history. • At handover: a README that another developer can pick up cold. Not a fit if you need a same-day patch on a site you cannot grant access to, 24/7 chat-style support, a 6-month framework build in Laravel or Symfony, or someone to manage offshore subcontractors. I work hands-on, solo, on bounded scopes. If you need someone who reads the brief carefully, owns the problem, and leaves the codebase in a better state, that is the work I do best.