Hire the Best Payment Gateway Integration Specialists in Yerevan, AM

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Oleg H.

Yerevan, Armenia

$55/hr
5.0
34 jobs

🟢 𝗣𝗮𝗿𝘁 𝗼𝗳 𝘁𝗵𝗲 𝗧𝗼𝗽 𝟭% 𝗘𝘅𝗽𝗲𝗿𝘁-𝗩𝗲𝘁𝘁𝗲𝗱 Full-Stack Developers on Upwork 🚀 Specializing in 𝗔𝗻𝗴𝘂𝗹𝗮𝗿 (𝟭𝟴+), 𝗝𝗮𝘃𝗮 (𝟭𝟳+), 𝗦𝗽𝗿𝗶𝗻𝗴 𝗕𝗼𝗼𝘁, 𝗔𝗜 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻, 𝗔𝗣𝗜 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁, 𝗙𝗶𝗻𝘁𝗲𝗰𝗵, and Scalable Web Applications. With 𝟭𝟬+ 𝘆𝗲𝗮𝗿𝘀 delivering robust, maintainable, and scalable software solutions, I combine front-end expertise in Angular and back-end mastery with 𝗝𝗮𝘃𝗮 𝗮𝗻𝗱 𝗦𝗽𝗿𝗶𝗻𝗴 𝗕𝗼𝗼𝘁 𝘄𝗶𝘁𝗵 𝗔𝗜 𝗶𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻 𝘀𝗸𝗶𝗹𝗹𝘀 including 𝗚𝗣𝗧-𝟰, 𝗟𝗮𝗻𝗴𝗖𝗵𝗮𝗶𝗻, 𝗖𝘂𝗿𝘀𝗼𝗿 𝗔𝗜, 𝗣𝘆𝘁𝗵𝗼𝗻, 𝗮𝗻𝗱 𝗡𝗼𝗱𝗲.𝗷𝘀. I build powerful AI-driven automation, chatbots, and API workflows. 𝗪𝗵𝘆 𝘄𝗼𝗿𝗸 𝘄𝗶𝘁𝗵 𝗺𝗲? ✅ 𝗗𝗲𝗲𝗽 𝗲𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 𝗶𝗻 𝗔𝗻𝗴𝘂𝗹𝗮𝗿 & 𝗝𝗮𝘃𝗮 – clean, scalable code optimized for performance ✅ 𝗔𝗜 & 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 𝘀𝗸𝗶𝗹𝗹𝘀 – GPT-4, LangChain, Cursor AI, OpenAI API, Python, Node.js ✅ 𝗖𝗹𝗼𝘂𝗱 & 𝗗𝗲𝘃𝗢𝗽𝘀 – AWS, Kubernetes, Docker, CI/CD pipelines ✅ 𝗧𝗲𝘀𝘁𝗶𝗻𝗴 & 𝗤𝘂𝗮𝗹𝗶𝘁𝘆 𝗔𝘀𝘀𝘂𝗿𝗮𝗻𝗰𝗲 – unit & integration testing with Jest, JUnit, Selenium ✅ 𝗣𝗮𝘆𝗺𝗲𝗻𝘁 & 𝗔𝗣𝗜 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀 – Stripe, Braintree, PayPal, Sendinblue, plus fintech platforms ✅ 𝗧𝗿𝘂𝘀𝘁𝗲𝗱 𝗯𝘆 𝘀𝘁𝗮𝗿𝘁𝘂𝗽𝘀 & 𝗲𝗻𝘁𝗲𝗿𝗽𝗿𝗶𝘀𝗲𝘀 – 50+ projects delivered successfully ✅ 𝗙𝗮𝘀𝘁, 𝗰𝗹𝗲𝗮𝗿 𝗰𝗼𝗺𝗺𝘂𝗻𝗶𝗰𝗮𝘁𝗶𝗼𝗻 & 𝗿𝗲𝗹𝗶𝗮𝗯𝗹𝗲 𝗱𝗲𝗹𝗶𝘃𝗲𝗿𝘆 𝘁𝗼 𝗸𝗲𝗲𝗽 𝘆𝗼𝘂𝗿 𝗽𝗿𝗼𝗷𝗲𝗰𝘁 𝗼𝗻 𝘁𝗿𝗮𝗰𝗸 𝗖𝗿𝗲𝗱𝗲𝗻𝘁𝗶𝗮𝗹𝘀 & 𝗕𝗮𝗰𝗸𝗴𝗿𝗼𝘂𝗻𝗱 ⭐ Oracle Certified Java Professional ⭐ Neural Networks and Deep Learning (DeepLearning.AI) ⭐ Lecturer at Russian-Armenian University (RAU) ⭐ Computer Science graduate, American University of Armenia 𝗖𝗹𝗶𝗲𝗻𝘁 𝗣𝗿𝗮𝗶𝘀𝗲: "Oleg integrated GPT-4 APIs seamlessly, creating a chatbot that boosted our customer engagement by 40%." – AllAboutCustomers "Delivered LangChain automation ahead of schedule, saving us thousands in manual work." – BobbyTech 🚀 Ready to build your next AI or fintech solution with a trusted expert? Message me today and let’s create something amazing!

  • Payment Gateway Integration
  • Payment Gateway
  • Java
  • JavaScript
  • Spring Framework
  • Software Architecture & Design
  • Web Service
  • Angular 10
  • AWS Lambda
  • Python
  • Cloud Architecture
  • Node.js
  • Performance Optimization
  • Cloud Computing
  • Web Scraping
Andrey A.

Yerevan, Armenia

$50/hr
5.0
371 jobs

"He reduced our API response time by 80%" — SaaS founder after Laravel optimization Senior Laravel developer who transforms complex business ideas into profitable, scalable platforms. With 300+ completed projects and $1M+ in delivered value, I specialize in the challenging stuff that makes or breaks businesses. What I actually deliver: - Multi-tenant SaaS platforms serving thousands of users - AI-powered Laravel applications with ChatGPT integration - Performance optimization delivering 3-5x speed improvements - "Unfixable" Laravel rescue projects brought back to life - Enterprise APIs processing millions of requests daily Recent client wins: → Scaled startup's Laravel app from 100 to 10,000+ concurrent users → Reduced server costs by 60% through database optimization → Built SaaS platform generating $50K+ monthly recurring revenue → Migrated legacy system to modern Laravel 11 architecture My TALL Stack expertise: Laravel 11 (any version) • Livewire 3 • Alpine.js • Tailwind CSS • Filament Admin • Vue.js • Inertia.js • Laravel Nova • Sanctum API • Laravel Octane • Docker deployment Why clients choose me over other developers: ✓ 9+ years preventing costly mistakes that doom projects ✓ Senior-level delivery speed (days vs weeks for complex features) ✓ Long-term partnership approach (not disappearing after launch) ✓ Proven at enterprise scale with Fortune 500 clients ✓ 100% Job Success Score with zero failed projects Perfect for: - SaaS founders needing scalable Laravel architecture - CTOs requiring performance optimization expertise - Agencies seeking reliable Laravel development partner - Startups wanting enterprise-grade technical foundation Next steps: Send me your Laravel challenge with current pain points. I'll review your requirements and provide a clear roadmap with realistic timelines and guaranteed outcomes. Available for complex builds, rescue projects, and long-term partnerships.

  • Laravel
  • PHP
  • Vue.js
  • MySQL
  • JavaScript
  • API
  • Stripe
  • PayPal
  • RESTful API
  • PostgreSQL
  • Shopify
  • CS-Cart
  • WordPress
  • Yii
  • CodeIgniter
Zhenik K.

Yerevan, Armenia

$8/hr
5.0
6 jobs

I am a Shopify Specialist with a solid background in administrative support and project coordination from my time working at the Ministry of Education of Armenia. My experience managing official documentation, coordinating workflows, and ensuring accurate communication has given me the organizational skills needed to assist businesses with their Shopify stores and e-commerce operations. Here’s what I can do for you: ✔️ Shopify Store Setup and Customization ✔️ Product Listings, Payment Gateway Integration, and App Installation ✔️ Administrative Support and Document Management ✔️ Content Updates and QA Testing ✔️ Customer Support and Order Management During my career at the Ministry of Education, I managed complex administrative tasks that required attention to detail and efficient time management. I now apply those same skills to helping businesses optimize their Shopify stores and deliver excellent customer experiences. 🌟 As a new freelancer on Upwork, I’m eager to build my reputation and offer my services at a lower rate while doing so. This is the perfect time to work with me and benefit from top-quality services at an affordable price.

  • Set Up Shopify Site
  • Shopify Development
  • Customer Support
  • Virtual Assistance
  • Ecommerce Website
  • Web Development
  • Product Development
  • Shopify Theme
  • Shopify Templates
  • Shopify Website Design
  • Document Management System
  • Product Listings
  • Shopify Website Redesign
Albert G.

Yerevan, Armenia

$40/hr
4.6
84 jobs

I’m a Senior WordPress & WooCommerce Developer with 10+ years on Upwork helping businesses fix the problems other developers can’t solve. I specialize in: • Custom WooCommerce plugins, extensions & add-ons • Payment gateway integration (PayFast, Stripe, PayPal, custom APIs) • Subscription logic & renewal issues • Eliminating duplicated orders / duplicated renewals • Checkout errors, race conditions, AJAX conflicts • Custom API integrations (ERP, CRM, shipping, invoicing) • Theme & child-theme development • Performance optimization & debugging • Advanced WooCommerce hooks & filters • Fixing plugin conflicts and broken functionality What Makes Me Different Most developers use WooCommerce. I understand how it works internally: • Action priorities • WC_Subscriptions internals • Cron conflicts • Payment callback issues • Data validation + lifecycle hooks • Template override logic • Script localization + AJAX flows This means I can diagnose and fix complex issues faster and more reliably. Custom Development (My Core Strength) I develop: • Custom WooCommerce plugins • Extensions for existing plugins • Add-ons for WooCommerce Subscriptions, Appointments, Bookings • Custom checkout flows • Webhooks & REST API integrations • Admin tools, dashboards, automation scripts Emergency Fix Specialist If your WooCommerce store is experiencing: • Duplicate orders • Broken renewals • Payment “Amount Mismatch” errors • API callbacks not firing • Emails not triggering • Checkout freezing • Plugin conflicts …I can fix it quickly and explain what caused the issue so it won’t happen again. Why Clients Hire Me • 9+ years experience • Top Rated • Clean, maintainable code • Fast communication • Clear explanations • Reliable long-term support Let’s Work Whether you need a fast fix or a custom solution built from scratch, I’m ready to help. Send me a message and tell me what’s broken — I’ll take a look right away.

  • Web Design
  • HTML5
  • PHP
  • JavaScript
  • WooCommerce
  • AJAX
  • CSS 3
  • WordPress Plugin
  • WordPress
  • Web Development

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