API Integration Experts For Hire
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Hire Herculesz
Principal / Head AI & Full-Stack Engineer with 25+ years of experience architecting, building, and scaling complex software systems across web, mobile, cloud, CMS/eCommerce, and AI-driven platforms. I specialize in delivering production-ready applications from concept to launch, including SaaS platforms, marketplaces,...Principal / Head AI & Full-Stack Engineer with 25+ years of experience architecting, building, and scaling complex software systems across web, mobile, cloud, CMS/eCommerce, and AI-driven platforms. I specialize in delivering production-ready applications from concept to launch, including SaaS platforms, marketplaces, admin dashboards, mobile applications, automation systems, APIs, CMS websites, eCommerce stores, and intelligent AI-powered workflows. I bring a strong combination of full-stack engineering, cloud architecture, DevOps, CMS/eCommerce development, and AI/LLM expertise, with a proven ability to transform complex business requirements into scalable, secure, and user-focused digital products. My experience covers frontend architecture, backend engineering, database design, third-party integrations, real-time systems, performance optimization, CI/CD, observability, and production deployment. Technical Expertise: Frontend: React, Next.js, Vue.js, TypeScript, JavaScript, Tailwind CSS, Material UI, responsive UI/UX implementation Backend: Node.js, NestJS, Express.js, Laravel, PHP, Python, REST APIs, GraphQL, microservices, server-side architecture Mobile: Flutter, React Native, Expo, iOS, Android, cross-platform mobile app development CMS & eCommerce: WordPress, WooCommerce, Shopify, Wix, Webflow, custom theme development, plugin/app integrations, payment setup, product catalogs, checkout flows, landing pages, blog systems, and SEO-friendly website architecture Databases: PostgreSQL, MySQL, MongoDB, Firebase Firestore, Supabase, Redis, database design, optimization, migrations, and data modeling Cloud & DevOps: AWS, Google Cloud, Azure, DigitalOcean, Docker, Kubernetes, Nginx, CI/CD, GitHub Actions, server deployment, monitoring, logging, and observability AI & LLMs: OpenAI API, LangChain, RAG pipelines, AI copilots, conversational agents, semantic search, embeddings, prompt engineering, fine-tuning, Pinecone, pgvector, vector databases, and agentic workflows Payments & Integrations: Stripe, PayPal, Twilio, SendGrid, Firebase, Google APIs, third-party APIs, webhooks, CRM integrations, automation platforms, and API-based business workflows I have a strong track record of designing and delivering scalable SaaS platforms, marketplace systems, mobile apps, admin dashboards, CMS websites, eCommerce stores, automation tools, and AI-driven products that support real business operations. My work combines clean frontend experiences, secure backend systems, optimized databases, cloud-ready infrastructure, flexible CMS solutions, and practical AI innovation. As a hands-on technical leader, I am experienced in mentoring engineers, leading cross-functional teams, making architecture decisions, and aligning technical execution with business goals. I am passionate about building high-quality software that is scalable, maintainable, and ready for real-world users. less -
Hire iosifpeterfi
I've spent the last 15 years building and running the systems that businesses actually depend on. Most of my work falls into three buckets: taking a SaaS product from Software Architecture through to production on AWS (React, Angular, Vue.js or Next.js up front, Node.js, Python, PHP or Java behind the REST API,...I've spent the last 15 years building and running the systems that businesses actually depend on. Most of my work falls into three buckets: taking a SaaS product from Software Architecture through to production on AWS (React, Angular, Vue.js or Next.js up front, Node.js, Python, PHP or Java behind the REST API, PostgreSQL, MySQL, MongoDB, MariaDB or SQL Server underneath), wiring together the Cloud Computing and DevOps layer (Docker, Kubernetes, CI/CD pipelines, Ansible, Nginx, Apache, DNS, SSL, cPanel, Web Hosting, Virtualization), and then hardening everything with Cloud Security and Performance Tuning so it doesn't fall over at 2am. Where I add the most value is in Infrastructure Architecture and Systems Engineering decisions early on — Database Design, API Development contracts, security and observability before they become expensive. I've done this for e-commerce platforms (Shopify, WooCommerce, Magento) to ERP rollouts (Zoho, ERPNext, PowerApps) to enterprise governance and workflow systems (Spring Boot, BPMN, Microsoft Graph, n8n, ProcessMaker, Joget, Flowable, role-based access, audit trails) to custom Data Analytics pipelines, Excel reporting and BI dashboards. More recently I've been doing AI Development work — integrating LLMs, Prompt Engineering, and Typescript-based tooling into real workflows. Not the hype kind, but practical automation that saves time. I write Shell and Python scripts the way some people write emails: constantly. If something can be automated, it probably should be. CompTIA Security+, Microsoft MCSE/MCSA/MCITP English (C2), German (C1), Romanian (native) Based in Germany. NDA-friendly. less -
Hire Hubready
A US-based engineering team — in business since 2008, registered in South Florida. Clients bring us in when systems become too complex, too slow, or unreliable — or when an AI idea needs to become a real, production-ready product, not just a prototype. We don't just write code — we build systems that work in the...A US-based engineering team — in business since 2008, registered in South Florida. Clients bring us in when systems become too complex, too slow, or unreliable — or when an AI idea needs to become a real, production-ready product, not just a prototype. We don't just write code — we build systems that work in the real world. We're a senior Full-Stack & AI engineering team with deep experience designing, building, and scaling production-grade software across AI automation, SaaS platforms, data pipelines, and high-volume e-commerce. We bring both an engineering and a business mindset, so what we deliver is technically sound, maintainable, and ROI-driven. ✓ What we do best – AI & Automation • LLM integrations (OpenAI, RAG pipelines, embeddings, copilots) • Intelligent workflow automation and data processing • AI-powered internal tools and dashboards • Zapier, n8n, Selenium, Python, Beautiful Soup • Stock trading algorithms/bots for Schwab, E*TRADE, and more – Backend & Data Engineering • Custom APIs and event-driven architectures • PostgreSQL at scale (partitioning, optimization, analytics) • ETL pipelines across Shopify, Salesforce, ERP, and custom systems • Node.js, Python, TypeScript – Frontend Development & UX • Modern, responsive frontends built for real users • React, Next.js, and component-driven UI architecture • Data-heavy dashboards built for performance • Clean UI/UX that balances usability, speed, and clarity – Mobile App Development • Cross-platform apps for iOS & Android • React Native, Flutter, and modern mobile stacks • Secure API integration and real-time data sync • Built for performance, stability, and growth – Cloud, DevOps & Reliability • Docker / Podman, CI/CD pipelines, secure deployments • Observability, logging, and performance tuning • Systems designed to scale without constant maintenance ✓ How we work • Clear communication and structured milestones • Production-ready code — no shortcuts or fragile builds • Proactive technical guidance when we see risks or better paths • Long-term thinking: solutions that grow with your business Working with a US company since 2008 means accountability, clear English-language communication, and a team that's still here to support what we build. If you need a senior team that can own frontend, backend, data, mobile, and AI end-to-end — and deliver clean, scalable results — let's build it right. Message us with your project and we'll tell you honestly how we'd approach it. less -
Hire alizashaikh8778
About Me Hi, I’m Aliza Shaikh, a dedicated Web & App Developer passionate about creating clean, functional, and visually engaging digital solutions. I work with clients across the globe to build websites and applications that are reliable, user-friendly, and aligned with real business goals. From idea to execution,...About Me Hi, I’m Aliza Shaikh, a dedicated Web & App Developer passionate about creating clean, functional, and visually engaging digital solutions. I work with clients across the globe to build websites and applications that are reliable, user-friendly, and aligned with real business goals. From idea to execution, I focus on delivering solutions that not only look good but also perform smoothly and scale with your needs. Whether it’s a personal brand, a business website, or a custom application, I bring clarity, creativity, and technical precision to every project. 💡 What I Can Help You With Website Development & Design (WordPress, Laravel, Webflow, WIX, Squarespace) E-Commerce Stores & Online Business Solutions (Shopify & Custom Builds) Web & App Development (Frontend + Backend, Flutter Apps) Custom Web Applications & Features UI/UX Design & Figma Prototyping Website Performance Optimization & Ongoing Management SEO Setup & Digital Visibility Improvement Blog Design & Creative Web Solutions 🛠 Technical Skill Set Languages & Frameworks: HTML, CSS, JavaScript, PHP, React, Flutter, Laravel Platforms & CMS: WordPress, Shopify, Webflow, WIX, Squarespace Design & UX Tools: Figma, Adobe XD Core Strengths: Custom Development, SEO-Friendly Builds, E-Commerce, Web Apps, App Interfaces Why Choose Me? - Clear communication and professional workflow - Fully customized solutions—no generic templates - Strong attention to detail and performance - Support throughout the project and after delivery - Committed to quality, timelines, and client satisfaction Let’s Work Together If you’re looking for a dependable Web & App Developer who cares about your project as much as you do, I’d love to collaborate. Let’s turn your idea into a powerful digital experience less -
Hire juanpablomacf
I transform complex business challenges into scalable AI solutions that deliver measurable results. With over a decade of experience in both full-stack development and AI implementation, I bridge the gap between ambitious ideas and production-ready systems. 🏆 Proven Impact Across Industries FinTech: Built trading...I transform complex business challenges into scalable AI solutions that deliver measurable results. With over a decade of experience in both full-stack development and AI implementation, I bridge the gap between ambitious ideas and production-ready systems. 🏆 Proven Impact Across Industries FinTech: Built trading dashboards processing 50,000+ daily transactions with real-time analytics MedTech: Developed AI diagnostic assistants that reduced analysis time by 65% LegalTech: Implemented RAG systems that cut legal research from hours to minutes SaaS: Scaled platforms from MVP to 100,000+ users with integrated AI capabilities 🔧 Technical Expertise AI & Machine Learning AI Agent Systems: Multi-step reasoning and workflow orchestration RAG Pipelines: LangChain, LlamaIndex, Pinecone, ChromaDB (95%+ retrieval accuracy) LLM Integrations: GPT-4, Claude 3, LLaMA fine-tuning and optimization Voice AI: Twilio integration and real-time call processing Full-Stack Development Frontend: React/Next.js, TypeScript Backend: Node.js, Python, FastAPI DevOps: AWS, Docker, Kubernetes, CI/CD pipelines Automation: n8n workflows, custom API integrations 🚀 Recent Deliverables • AI Customer Support: Reduced ticket volume by 75% with bots handling 15,000+ monthly conversations • Document Intelligence: Built legal document analysis that cut review time from 4 hours to 15 minutes • Trading Analytics: Delivered real-time dashboards with 99.9% uptime for financial clients • Workflow Automation: Saved 200+ manual hours monthly through n8n-powered processes 🎯 My Approach Strategy & Planning Technical feasibility analysis and ROI-focused project scoping Scalable architecture design for long-term growth Execution & Delivery AI-enhanced development using Cursor and Copilot Agile methodology with transparent weekly progress updates Comprehensive testing and quality assurance Production Excellence Robust monitoring, logging, and error handling Performance optimization and thorough documentation 📈 Why Choose Senior Expertise? I architect systems that scale, implementing proper error handling, security protocols, and maintainable codebases. My clients avoid technical debt while accelerating their AI roadmap with production-ready solutions. I'm available for full-time engagements and ready to discuss how I can help bring your AI vision to life. less -
Hire tyronet2
Senior Software Engineer with 9+ years of experience building scalable web and mobile applications, specializing in frontend architecture with strong full-stack and AI integration skills. I work with modern frameworks like React, React Native, Next.js, and Vue.js on the frontend, and Node.js (NestJS), Python, and...Senior Software Engineer with 9+ years of experience building scalable web and mobile applications, specializing in frontend architecture with strong full-stack and AI integration skills. I work with modern frameworks like React, React Native, Next.js, and Vue.js on the frontend, and Node.js (NestJS), Python, and Java Spring Boot on the backend. I've delivered high-impact products across the US, Korea, and the Philippines, owning core features end-to-endfrom translating Figma designs into accessible, production-ready interfaces to building secure REST APIs and payment systems (Stripe). I also integrate AI-powered features using LLMs (OpenAI pipelines) and CNN-based image processing, and use tools like Claude Code daily to accelerate development. I'm comfortable in remote, cross-cultural teams and enjoy mentoring junior developers, leading UI architecture, and solving complex production challenges. Let's build something great together! 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 AdeelAslam4
We're BrainX, a Pakistan-based software team that builds and maintains mobile apps people actually use. Baritastic, a HIPAA-compliant bariatric care app we've maintained for over 5 years, has 500,000+ installs and a 4.6 rating on Google Play, with native iOS and Android builds, wearable integrations across Fitbit,...We're BrainX, a Pakistan-based software team that builds and maintains mobile apps people actually use. Baritastic, a HIPAA-compliant bariatric care app we've maintained for over 5 years, has 500,000+ installs and a 4.6 rating on Google Play, with native iOS and Android builds, wearable integrations across Fitbit, Garmin, and Apple HealthKit, and a provider dashboard for care teams. That's not the only one live today: • Ponder, an AI voice-therapy app on both app stores • CaloTracker, an AI-powered calorie and nutrition tracker built in Flutter, with photo and barcode scanning and Apple Health sync • LUMP, a cross-platform Flutter social meetup app with a Node.js and MongoDB backend, live on both stores • RollStrong, a Flutter fitness app with a working subscription model, live on both stores • SwapDotz, an app using native NFC integration to verify and trade physical collectibles Clients back this with real budgets: one mobile app project came in at over $17,000, another at over $4,000, both five-star reviews specifically praising our delivery and communication. AI development is core to what we build into mobile • MathAMentor, an AI maths tutor students talk to through a live avatar • Call Sling, an AI agent that answers and routes inbound calls • DocuMed, AI medical transcription with mobile, web, and offline support • RAG assistants, document and workflow automation, and support bots running across websites and WhatsApp for live clients Also part of what we do: Web Development • Next.js, React, Node.js, Python, and Laravel Shopify & Custom eCommerce • Custom storefronts and eCommerce builds UX/UI Design • Full product design from concept through interface Tell us what you're building and we'll walk you through how we'd approach your mobile app. less -
Hire mdmanouwer
I architect and deliver secure, scalable platforms across Drupal, WordPress/WooCommerce, cloud/DevOps and AI/LLM. With 14+ years of hands-on experience, I take ownership from solution architecture and development through infrastructure, security, performance, deployment and production support. My advantage is...I architect and deliver secure, scalable platforms across Drupal, WordPress/WooCommerce, cloud/DevOps and AI/LLM. With 14+ years of hands-on experience, I take ownership from solution architecture and development through infrastructure, security, performance, deployment and production support. My advantage is combining application engineering, cloud infrastructure and AI into one reliable production solution. Clients gain one senior technical partner instead of coordinating separate CMS, backend, DevOps and AI specialists. CORE SERVICES • Enterprise Drupal and WordPress architecture and development • Drupal 6–11 migrations, upgrades, custom modules and integrations • WooCommerce B2B/B2C stores, plugins, checkout and payments • AWS, Azure and GCP architecture, migration and optimization • Linux, Docker, Kubernetes, Terraform, Ansible and CI/CD • Core Web Vitals, Redis, CDN, database and server optimization • Security hardening, WAF, backups and disaster recovery • AI/LLM applications, RAG assistants, AI agents and automation,MCP • REST API, JSON:API, GraphQL, webhooks and system integrations • Analytics and SEO DRUPAL & WORDPRESS Drupal is my strongest and longest-running specialization. I work with PHP, Symfony, Composer, Drush, Twig, Views, Paragraphs, entities, Drupal Commerce, Search API, Apache Solr, Elasticsearch, headless Drupal, React, multilingual and multisite architecture. I am a Drupal Association member and Drupal core contributor. For WordPress and WooCommerce, I build custom themes, plugins, Gutenberg blocks, Elementor websites, B2B/B2C stores, payment and shipping workflows, API integrations and large product catalogues. I also handle migrations, malware recovery, performance and long-term support. CLOUD, DEVOPS & INFRASTRUCTURE I design and manage AWS, Azure, GCP, VPS, dedicated and on-premises infrastructure using Linux, Nginx, Apache, PHP-FPM, Docker, Kubernetes, ECS, Terraform, Ansible, GitHub Actions and Jenkins. My work covers IAM, SSL, DNS, WAF, monitoring, autoscaling, high availability, backups and disaster recovery. AI/LLM & FULL-STACK ENGINEERING I develop production AI applications using Python, FastAPI, OpenAI, Claude, Gemini, LangChain and LangGraph. Solutions include RAG, AI agents, document Q&A, semantic and hybrid search, embeddings, vector databases, MCP integrations, structured outputs, human approval, evaluation and observability. My broader stack includes PHP, Symfony, Laravel, Python, Node.js, React, JavaScript, MySQL, PostgreSQL, MongoDB, Redis, Elasticsearch and OpenSearch. I communicate clearly, test carefully and deliver maintainable code, repeatable deployments and useful documentation. Available for enterprise builds, migrations, rescue projects, cloud modernization, AI integrations and long-term technical partnerships. less -
Hire bhardwaj786
Welcome to Appquipo! We are a Mobile Application Development team that is well-respected for our captivating, innovative, and one-of-a-kind mobile app designs. Our certified team of App Experts has more than 10 years of comprehensive experience in this field and has worked with some absolutely phenomenal clients to...Welcome to Appquipo! We are a Mobile Application Development team that is well-respected for our captivating, innovative, and one-of-a-kind mobile app designs. Our certified team of App Experts has more than 10 years of comprehensive experience in this field and has worked with some absolutely phenomenal clients to create a stunning portfolio of work. Through our expertise, we offer the following services: ✅Salesforce Expertise – Commerce Cloud, Marketing Cloud, Sales Cloud, Service Cloud, Analytics, Salesforce Einstein, Salesforce -- CRM, Salesforce Mobile App ✅eCommerce Expertise-- Magento 2, Shopify, BigCommerce, WooCommerce, OpenCart, Shopware, ✅Languages Expertise -- PHP(CorePHP, Laravel, Cakephp, Yii, Yii2, Symfony, CodeIgniter, Zend), Angular, Node, React ✅Mobile Platforms - iOS, Android, Xamarin, Flutter, ionic Phone-gap, React Native, All On-Demand App ✅Software – ERP & CRM Development, SaaS products, Database Solutions Management, Supply Management, HRM, Booking Software, e-Learning As you can see, our offerings encompass a number of areas, and we can confidently say that we deliver some of the best services and assets in each of these areas. Whether you need a new app built, or an existing app reconfigured or edited, we will work with you to fix all your problems. We do this through consistent communication and in-depth planning and brainstorming. We will also meet all deadlines and budgetary limits, so there never needs to be any stress about deliverables. If you’re interested in working with us, you can reach us on Freelancer, where our team will gladly answer any questions you may have about our work, portfolio, reviews, or skill set. So please, let us know how Appquipo can help you today! less
