Web, App & Software Development

Top Rated on Upwork · 100% Job Success Freelance WordPress Developer for Hire Custom themes, plugins, WooCommerce stores, and multi-vendor marketplaces —…

Fast, SEO-ready web apps built with React and Next.js — SaaS platforms, admin dashboards, eCommerce storefronts, and API-connected — Mehdi Haider.

Custom Laravel applications, REST APIs, and CRMs — built clean enough that nobody has to rebuild them in two years. 17+ years…

Custom PHP development without unnecessary framework overhead: legacy codebase modernization, PHP 8+ migration, security hardening, and performance tuning.

CodeIgniter development and CI3-to-CI4 migration — lightweight PHP applications and APIs built without the overhead of a full-stack framework you don

SaaS development built for scale: multi-tenant architecture with real data isolation, subscription billing, role-based access, and admin tooling.

MVP development for startups: ruthless scope prioritization, a lean tech stack chosen for speed to market, and built-in analytics.

Custom online stores, multi-vendor marketplaces, and headless storefronts — built on WooCommerce or custom Laravel. Every detail from — Mehdi Haider.

Multi-vendor marketplace development with automated commission splitting, vendor onboarding and KYC, per-vendor storefronts, and dispute resolution.

Custom WordPress plugin development for functionality no off-the-shelf plugin covers — payment gateways, HIPAA-compliant forms, LMS logic, WhatsApp API, and custom REST…

Headless WordPress development — WordPress as a content API behind a Next.js or React frontend, using WPGraphQL or the REST API. Keep…

API integrations, custom code, CMS automation, and full Webflow-to-Laravel or Webflow-to-WordPress migrations. One developer who speaks — Mehdi Haider.

AI builders are incredible for prototyping. But when you need real authentication, payment processing, a backend that scales, or logic — Mehdi…

Your AI-built design, rebuilt in Divi WordPress — full CMS control for your team, WooCommerce ready, and no ongoing Lovable — Mehdi…

Custom CRM development for teams outgrowing generic tools: your fields, your pipeline stages, your integrations (Close, HubSpot, Stripe) — owned outright, not…

Internal tools and admin panels operators actually enjoy — roles, reports, filters, and bulk actions.

Custom booking and appointment scheduling systems with real-time availability, double-booking prevention, payment collection, and automated reminders.

Custom LMS and membership platform development: tiered access, drip content scheduling, video hosting, progress tracking, and payment integration.

Custom school management system development — enrollment, attendance, grading, fee management, and timetables, with admin, teacher, student, and parent portals that each…

Build your iOS app, Android app, and web app simultaneously — from a single Flutter codebase. No compromises on performance, no —…

Native-feeling iOS & Android app development — Flutter-first delivery, backend API included, and full App Store & Google Play submission handled.

Progressive Web App development: installable, offline-capable, app-like experiences with real caching strategy and push notifications.

Checkout flows, subscription billing, Stripe Connect for marketplaces, and rock-solid webhook handling. Built on Laravel, React — Mehdi Haider.

Hosted checkout, recurring billing, Payment Profiles tokenization, and PCI-compliant payment flows — integrated directly into your — Mehdi Haider.

Checkout flows, recurring billing, and tokenized payment storage — integrated correctly the first time, into Laravel — Mehdi Haider.

Payment gateway integration built for reliability and PCI-DSS compliance: Stripe, Bambora, and Moneris, with tokenized checkout and 3D Secure.

Bidirectional lead sync, webhook automation, custom reporting dashboards, and full close.com API integration — built into Laravel — Mehdi Haider.

HubSpot integration for WordPress, WooCommerce, and custom apps — contacts, deals, pipelines, custom objects, and workflow triggers synced in real time, with…

Order notifications, appointment reminders, lead follow-ups, and AI-powered support — sent to your customers on WhatsApp automatically — Mehdi Haider.

I build n8n and Make.com workflows that connect your tools, automate your repetitive tasks, and keep your data in sync — so…

I connect OpenAI, Claude, and Gemini APIs to the software you've already built — adding AI chat, document analysis, smart search, and…

Custom REST API development for SaaS, mobile apps, and integrations. Contract-first design, OpenAPI docs, auth, rate limiting, and production monitoring — built…

Custom third-party API integration — Stripe, Twilio, Shopify, QuickBooks, and more — built to handle auth, webhooks, and failures properly, instead of…

// SCRUT · HIPAA · SOC2 · Compliance Automation HIPAA & SOC2ComplianceDone. Audited. Passed. I took a real company from 15% to…

Custom healthcare software development: HIPAA-compliant patient portals, telehealth platforms, EHR integrations and scheduling systems, built and audited by a senior full-stack developer.

Convert an Elementor-built WordPress site into a lightweight custom theme — same design, same content and URLs, without the page-builder markup, plugin…

Every second of load time costs you conversions, rankings, and revenue. I audit your site, find exactly what's slow, and fix it…

Technical SEO for sites where crawl errors, slow Core Web Vitals, or bad indexation are capping organic growth — crawl audits, fixes,…

AIO and GEO optimization: structured data, llms.txt, content built to be extracted and cited by ChatGPT, Perplexity, and Google AI Overviews —…

Database optimization that finds the actual slow queries via EXPLAIN plan analysis, strategic indexing, N+1 elimination, and caching.

Cloud migration with a staged, zero-downtime cutover: infrastructure assessment, the right migration strategy, and a tested rollback plan.

DevOps and CI/CD pipeline setup for teams shipping without manual deploys. GitHub Actions/GitLab CI pipelines, Docker, infrastructure as code, and zero-downtime deployments…

Code audits and refactoring for slow, fragile, or hard-to-change codebases. Complexity analysis, dependency cleanup, test coverage gaps, and a prioritized refactor plan…

Ongoing website maintenance and support — core and plugin updates, security scanning, off-site backups, uptime monitoring, and priority bug fixes, so nothing…

Hiring Freelance Developer vs Agency — services and delivery by Mehdi Haider, full-stack developer.