Payment Gateway Integration Engineers For Hire
Showing 246 results
Sponsored Freelancers
-
Hire anirudhat
I build clean, functional solutions fast across the full stack. Specializing in: - Web: React, Next.js, Node.js, Python, PHP, Ruby on Rails, Golang, Laravel, Django, WordPress, Vue.js - Mobile: React Native, Flutter, Android (Kotlin), iOS (Swift), Dart - AI & Machine Learning: LLM integrations (Claude, OpenAI,...I build clean, functional solutions fast across the full stack. Specializing in: - Web: React, Next.js, Node.js, Python, PHP, Ruby on Rails, Golang, Laravel, Django, WordPress, Vue.js - Mobile: React Native, Flutter, Android (Kotlin), iOS (Swift), Dart - AI & Machine Learning: LLM integrations (Claude, OpenAI, Gemini), RAG pipelines, LangChain, vector databases, prompt engineering, chatbots, NLP, OCR, generative AI - APIs & Integrations: REST, GraphQL, payment gateways (Stripe, PayPal, Razorpay), Twilio, SendGrid, third-party services - Cloud & DevOps: AWS, Azure, Docker, Kubernetes, Jenkins, CI/CD, Nginx, Linux server administration, Cloudflare - E-commerce & CRM: WooCommerce, OpenCart, Magento, Odoo, Prestashop, Point of Sale systems - Databases: MySQL, PostgreSQL, MongoDB, MariaDB, Elasticsearch, SQLite, Redis, Microsoft SQL Server - Trading & Finance: MetaTrader 4/5, MQL4/5, Pine Script, NinjaTrader, OpenClaw, backtesting, trading bots - Data & Automation: Excel/Google Sheets automation, dashboards, data analysis, workflow automation I focus on understanding your requirements clearly, delivering working code, and communicating progress throughout. less -
Hire CVInfotech
Custom Software, AI and SaaS Product Studio. 14 Years, One Platform. We have built exclusively on Freelancer.com for 14 years. 500+ projects delivered. 5.0 rating across 512 reviews. 23% repeat hire rate. This is our only sales channel, so every project gets our full attention, not overflow from an agency spread...Custom Software, AI and SaaS Product Studio. 14 Years, One Platform. We have built exclusively on Freelancer.com for 14 years. 500+ projects delivered. 5.0 rating across 512 reviews. 23% repeat hire rate. This is our only sales channel, so every project gets our full attention, not overflow from an agency spread across ten platforms. What we build Custom software and SaaS platforms. Full stack, scalable, built to hand off cleanly. AI native products. ChatGPT, Claude and Gemini integrations, AI chatbots, voice agents, workflow automation. Ecommerce and marketplaces. Shopify, WooCommerce, multivendor platforms. WordPress, Laravel, React, Next.js and Node.js. Production grade, not template work. You will work directly with Akash (CTO, 14 years on this platform) and Shubham or Divya (client relationship leads, named by clients in reviews going back years). The same people from your first message to final delivery. No account handoffs, no rotating project managers. 152 professional recommendations back that consistency. 100% in house team. No outsourcing. We treat every project as if we are the ones maintaining it three years from now, because often we are. Some clients have stayed with us since 2012. If your project does not need custom development, we will tell you before you spend the money. Core expertise Frontend: React, Next.js, Vue, Angular, TypeScript Backend: Node.js, Express, NestJS, Laravel, FastAPI, Core PHP Mobile: React Native, Flutter Databases: PostgreSQL, MongoDB, MySQL, Supabase Cloud: AWS, Google Cloud, Docker AI and Automation: OpenAI, Claude and Gemini APIs, RAG pipelines, LangChain, AI agents CMS and Ecommerce: WordPress, Shopify, WooCommerce, Wix, Squarespace, BigCommerce, Magento, Joomla, OpenCart, Weebly, Webflow, GoDaddy Website Builder, headless CMS Payments, Billing and Subscriptions: Stripe, Stripe Connect, PayPal, Razorpay, WooPayments, NOWPayments, ccBill, LemonSqueezy, Peppol Voice and Telephony: VAPI for inbound and outbound call orchestration with function calling, Twilio for phone number provisioning CRM and Automation: HubSpot, Zapier Lead Generation and Landing Pages: HubSpot, Odoo, Webflow, GoHighLevel, Apify, Outscraper Email and Communication: Postmark, Nodemailer, Mailivery, Gmail API, Microsoft Graph API, Yahoo IMAP, SendGrid AI Assisted Development: Cursor, Replit, Bubble, WeWeb, Lovable, Bolt, Base44 Let's talk about what you are trying to build. less -
Hire vasundhara19
We help startups and growing businesses build AI-powered SaaS platforms, mobile apps, and web applications, from MVP to scale, with a focus on speed, performance, and real business outcomes. With 13+ years of experience and 500+ successful projects delivered, we don’t just develop software, we build products that are...We help startups and growing businesses build AI-powered SaaS platforms, mobile apps, and web applications, from MVP to scale, with a focus on speed, performance, and real business outcomes. With 13+ years of experience and 500+ successful projects delivered, we don’t just develop software, we build products that are designed to grow, handle scale, and deliver measurable impact. 🔹 Proven Results ➜ 500+ applications delivered globally ➜ MVPs launched in 30–45 days ➜ Apps scaled to 100K+ users ➜ AI solutions reducing manual work by up to 40% ➜ 4.9★ rating across 170+ client reviews 🔹 What We Do Best SaaS & MVP Development ➜ MVP development (idea → launch) ➜ Multi-tenant SaaS platforms ➜ Subscription & billing systems ➜ Admin dashboards & analytics ➜ Scalable backend architecture Mobile & Web App Development ➜ Flutter apps (iOS & Android) ➜ React Native cross-platform apps ➜ High-performance web applications ➜ App deployment & optimization AI-Powered Solutions ➜ AI-integrated web & mobile apps ➜ Chatbots & AI assistants ➜ LLM-based solutions (RAG, automation) ➜ Intelligent workflows & automation 🔹 Tech Stack ➜ Frontend: React.js, Next.js, Angular, Vue.js ➜ Backend: Node.js, Python (Django), Laravel ➜ Mobile: Flutter, React Native, Swift, Kotlin ➜ Databases: PostgreSQL, MySQL, MongoDB ➜ Cloud: AWS, Docker, DigitalOcean ➜ AI: LLMs, RAG pipelines, automation tools 🔹 Why Clients Work With Us ➜ MVPs delivered in 30-60 days ➜ Built for scale from day one (no rebuild later) ➜ Focus on business outcomes, not just code ➜ Clean, maintainable, production-ready systems ➜ Clear communication & daily updates ➜ Long-term support & product growth 🔹 Industries We Serve ➜ SaaS & Startups ➜ FinTech & Healthcare ➜ E-commerce & Marketplaces ➜ Logistics & Transportation ➜ Education & Fitness ➜ AI-driven platforms 🔹 We Are a Great Fit If You: ➜ Want to launch your MVP quickly and correctly ➜ Need to scale an existing product ➜ Want to integrate AI into your business ➜ Care about long-term product quality 🔹 Not the Right Fit If: ➜ You are looking for the cheapest option ➜ You need quick, low-quality solutions ➜ Budget is your only decision factor 🔹 What You Can Expect ➜ Transparent communication & daily updates ➜ Strong ownership of your project ➜ On-time delivery with proper QA ➜ Scalable, future-ready architecture ➜ Ongoing support after launch 🔹 Let’s Build Something That Scales If you're looking to build: ➜ AI-powered SaaS platform ➜ Mobile app (Flutter / React Native) ➜ Web application ➜ Startup MVP Send us a message or invite us to your project. Let’s turn your idea into a scalable, successful product. less -
Hire visionvivante
VISION TO REALITY Preferred Freelancer by Freelancer Vision Vivante is an agency in India dedicated to transforming ideas into scalable, high-performance platforms. With a strong foundation in strategy, design, and technology, we help businesses accelerate growth, simplify complexity, and thrive in the digital...VISION TO REALITY Preferred Freelancer by Freelancer Vision Vivante is an agency in India dedicated to transforming ideas into scalable, high-performance platforms. With a strong foundation in strategy, design, and technology, we help businesses accelerate growth, simplify complexity, and thrive in the digital age. ✅ End-to-End Services: -- Product Strategy & MVP Development -- Concept-to-Launch Solutions -- Product Roadmaps, User Flows & Wireframing -- Technical Architecture & Agile Team Assembly ✅ Custom Software Development: -- Full-Stack Web & Mobile Applications -- SaaS Platforms | Marketplaces | Internal Tools -- API Integrations, DevOps, Cloud Infrastructure ✅ Tech Stack Expertise: -- Frontend: React.js, Vue.js, Next.js -- Backend: Node.js, Laravel -- Mobile: Flutter, React Native -- Database: PostgreSQL, MySQL, MongoDB -- CMS: WordPress, Shopify, Magento, Prestashop, Custom CMS -- Infra: AWS, GCP, CI/CD, Serverless ✅ E-Commerce & Business Platforms: -- Shopify, WooCommerce, Magento -- Auction & Multi-Vendor Systems -- Payment Gateway Integration (incl. Stripe, CashApp, M-Pesa, Mada, HyperPay) ✅ Enterprise & Operational Systems: -- ERP, CRM & Warehouse Management -- Stock Control, Route Planning, Payroll, Ledgers -- Driver & Customer Apps with Live Tracking ✅ Industries Served: >> E-commerce | Fintech | Logistics | Travel | Legal | Education | Real Estate | Healthcare | Fitness | Marketplaces | Social Platforms | SaaS | Pickup and Delivery | POS (Point of Sale) Why Vision Vivante? ✅ Strategy-First Execution ✅ Cross-Platform Development Experts ✅ Agile Teams & Transparent Collaboration ✅ Deep Tech + Business Understanding ✅ Global Clients in 50+ Countries ✅ Fast Turnarounds, Scalable Codebases ✅ Dedicated PMs, Engineers & Designers ✅ Flexible Engagement Models Ready to Build? From digital products to complex systems, Vision Vivante turns your vision into a living, breathing platform. Work with a team that’s technical, strategic, and obsessed with your success. Let’s explore how we can collaborate. less -
Hire netishas
Hi there! I’m Netisha, I started my journey as a creative problem solver, fascinated by how design and technology shape the way people interact with businesses. Based in Miramar, Florida, I’ve spent years tailoring brands and websites that don’t just look good but turned into Revenue-Driving Powerhouses Over time, I...Hi there! I’m Netisha, I started my journey as a creative problem solver, fascinated by how design and technology shape the way people interact with businesses. Based in Miramar, Florida, I’ve spent years tailoring brands and websites that don’t just look good but turned into Revenue-Driving Powerhouses Over time, I noticed a common struggle among businesses: Struggling with a website that looks outdated, loads slowly, or doesn’t convert? Is your branding failing to make an impact in a crowded market? Tired of cookie-cutter designs that don’t reflect your business? If this sounds familiar, you're not alone. That’s exactly where I come in. I help businesses break through these challenges with strategic, high-converting design solutions, from stunning graphics to conversion-focused websites. GRAPHIC DESIGN THAT CAPTIVATES & CONVERTS: Your brand isn’t just a logo or a random graphic material, it’s an experience for audience. I create designs that don’t just look good, but drive engagement, build trust, and boost sales across all platforms. ✔ Branding & Logo Design ✔ Animation & Motion Graphics ✔ High-Converting Ad Creatives ✔ Product Packaging & Labels ✔ Social Media & Marketing Graphics ✔ Print Materials, Professional Stationery designs ✔ Presentation, Pitch Deck & Master Template Design NEXT-GEN WEBSITE DESIGN & DEVELOPMENT: 2026 is here and your website should be built for the future while enhanced with AI. Whether you need a high-performing e-commerce store or a sleek business website, I craft solutions that are not just visually appealing but designed to convert visitors into customers. ✔ UX UI Design and Wireframe Creation over Figma, Adobe XD, Miro and More. ✔ Shopify Development & Optimization ✔ WordPress & WooCommerce Websites ✔ Wix & Squarespace Design ✔ Website Speed & SEO Optimization ◆ Outcome: A website that’s not just a digital brochure but a 24/7 sales machine. WHY PARTNER WITH ME? ✅ Data-Driven Design: Every pixel & line of code is intentional, optimized for results. ✅ Conversion-First Approach: I don’t just “design”—I solve business problems. ✅ Custom-Tailored Solutions: No templates, no shortcuts—just strategic execution. ✅ SEO & Performance Focused: Speed, visibility, and user experience—all in one. ✅ Reliable Communication & On-Time Delivery: No ghosting, no delays—just results. Feel free to message me anytime to discuss your ideas or request a custom consultation. Let’s collaborate and make it happen! less -
Hire vladang
I’m a Senior Software Engineer with 10+ years of experience building secure, scalable, and high-performance web, mobile, and AI-powered applications that solve real business problems and drive measurable results. I specialize in end-to-end development — from planning and architecture to deployment, optimization, and...I’m a Senior Software Engineer with 10+ years of experience building secure, scalable, and high-performance web, mobile, and AI-powered applications that solve real business problems and drive measurable results. I specialize in end-to-end development — from planning and architecture to deployment, optimization, and long-term support. Whether you need a modern website, SaaS platform, mobile app, AI-powered solution, eCommerce store, custom CMS, API integration, automation workflow, or enterprise application, I deliver reliable, scalable, and future-ready solutions tailored to your goals. My expertise includes: • Frontend: React.js, Next.js, Vue.js, Nuxt.js, Angular, TypeScript, JavaScript, Tailwind CSS, shadcn/ui, responsive UI/UX, performance optimization. • Backend: Node.js (Express, NestJS), Python (Django, Flask, FastAPI), PHP (Laravel), C# (.NET), REST APIs, GraphQL, microservices, authentication, real-time systems. • Mobile: React Native, Flutter, Native Android (Java/Kotlin). • WordPress & CMS: WordPress, WooCommerce, Elementor, Gutenberg, ACF, custom themes/plugins, Sanity, Strapi, Contentful, Payload CMS, Directus, Storyblok, Builder.io, and headless CMS architectures. • Shopify & eCommerce: Shopify, Shopify Plus, Liquid, Hydrogen/Oxygen, custom apps, WooCommerce, Stripe, PayPal, subscriptions, and conversion-focused stores. • AI & Automation: OpenAI GPT, Claude, LangChain, Llama, RAG, AI chatbots, intelligent workflows, automation, and custom AI solutions. • Cloud & DevOps: PostgreSQL, MySQL, MongoDB, Firebase, Supabase, Docker, CI/CD, AWS, Azure, GCP, Vercel, and scalable cloud infrastructure. I focus on building clean, maintainable, and business-focused solutions with strong communication, reliable delivery, and attention to detail. From startups and MVPs to enterprise systems and long-term product development, I help turn ideas into scalable, high-quality products. If you’re looking for an experienced expert who can handle everything from modern web platforms and mobile apps to AI integrations, WordPress, Shopify, CMS development, and complex custom solutions — let’s build something exceptional. less -
Hire flapjakc
I am a full-stack developer and business strategist with 8+ years of professional experience spanning SaaS platforms, e-commerce solutions, and AI-integrated web applications. I deliver end-to-end solutions using WordPress, WooCommerce, Shopify, Laravel, Node.js, React, and Next.js — ensuring responsive,...I am a full-stack developer and business strategist with 8+ years of professional experience spanning SaaS platforms, e-commerce solutions, and AI-integrated web applications. I deliver end-to-end solutions using WordPress, WooCommerce, Shopify, Laravel, Node.js, React, and Next.js — ensuring responsive, conversion-focused, and scalable systems. My expertise includes API integrations, payment gateways, AI-powered tools, headless CMS, and marketplace platforms. What sets me apart: • Business-first approach — With a Bachelor of Commerce (Marketing) from Haskayne School of Business and a BSc in Psychology from University of Calgary, I understand user behavior and business strategy, not just code. • Certified professional — Google Ads Search Certified, Google Analytics Qualified, Microsoft 365 SMB Masters Sales Professional. • Full project lifecycle — From market research and UX strategy to deployment, optimization, and ongoing support. I focus on maintainable, event-driven, deploy-safe architectures, performance optimization, and UX-driven design. I have successfully launched subscription systems, affiliate marketplaces, and multi-tenant SaaS projects — always emphasizing reliability, continuity, and measurable business impact. Let's build something great together. less -
Hire alokraybd
Hello, My name is Alok Ray and I'm a passionate website designer and developer. I have more than 5 years of experience in web design and WordPress..◉✓ I am dedicated to delivering exceptional customer service. I will closely collaborate with you to comprehend your needs and objectives, and I will keep you informed...Hello, My name is Alok Ray and I'm a passionate website designer and developer. I have more than 5 years of experience in web design and WordPress..◉✓ I am dedicated to delivering exceptional customer service. I will closely collaborate with you to comprehend your needs and objectives, and I will keep you informed about the progress of your project every step of the way.⭐ ⭐ ✅ My Skills - ➤ HTML, HTML5 => CSS, CSS3 => Bootstrap => JavaScript ➤ PHP => WordPress => E-Commerce => Woo-Commerce ➤ Blog Installation => cPanel ▶ Website Speed Optimization ➤ Domain-Hosting ➤ Manually migrate WordPress ➤ Increase website security ➤ Website Error Fixing ➤ PSD/Figma TO HTML ➤ PSD/Figma TO WordPress ➤ WordPress Theme Customization ➤ WooCommerce Setup On WordPress ✔️ My top priority when working on a project is to ensure client satisfaction. I am constantly seeking out new challenges to improve my skills and knowledge.⭕ Thank you less -
Hire Joya1996
I have been in the website development and digital marketing field for the last 6 years. Over the years, I've developed expertise in the following areas: CMS Content Management System (CMS) CSS WooCommerce Dropshipping eCommerce Elementor Figma Google PageSpeed Insights HTML Page Speed Optimization PSD to...I have been in the website development and digital marketing field for the last 6 years. Over the years, I've developed expertise in the following areas: CMS Content Management System (CMS) CSS WooCommerce Dropshipping eCommerce Elementor Figma Google PageSpeed Insights HTML Page Speed Optimization PSD to HTML PSD2CMS Shopify Shopify Development Shopify Templates Squarespace Web Design Web Development Web Services Webflow Website Build Website Design Website Development Elementor Wix WordPress WordPress Design WordPress Multilingual WordPress Plugin Local SEO Technical SEO Ecommerce SEO Keyword research Graphic Design Logo Design Adobe Photoshop Banner Design My approach is results-oriented, and I stay current with the latest trends and updates. Regardless of your website’s current state, I’ll enhance its appearance and functionality. With my marketing strategies, I’ll ensure your site visitors convert into loyal customers quickly. Click the "HIRE ME" button on the right to begin transforming your vision into reality. less -
Hire cliftonc20
I help businesses automate workflows and save time using AI. I build custom GPT-powered chatbots, document processing tools, and automation systems that reduce manual work and improve efficiency. Whether you need a chatbot for your website, AI-powered data processing, or workflow automation, I can deliver a reliable...I help businesses automate workflows and save time using AI. I build custom GPT-powered chatbots, document processing tools, and automation systems that reduce manual work and improve efficiency. Whether you need a chatbot for your website, AI-powered data processing, or workflow automation, I can deliver a reliable solution quickly. What I can build for you: • AI chatbots (customer support, FAQ, internal tools) • Document Q&A systems (PDF, CSV, knowledge base) • GPT-powered automation workflows (Zapier / Make) • Custom backend APIs using Python and FastAPI Tech stack: Python • OpenAI (GPT-4/5) • FastAPI • Zapier / Make • REST APIs • PostgreSQL Why work with me: • Fast delivery and clear communication • Focus on business results, not just code • Clean, scalable, and production-ready solutions Let’s build something that saves you time and grows your business. less
