ChatGPT AI Integration Engineers For Hire
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Hire romany55
I build full-stack web and mobile apps that actually move business metrics - not just "look good". Over the past long years, I've delivered 8+ production platforms across SaaS, EdTech, and eCommerce using Python (Django/FastAPI) and React/Next.js. My work has helped clients improve performance by up to 40%, automate...I build full-stack web and mobile apps that actually move business metrics - not just "look good". Over the past long years, I've delivered 8+ production platforms across SaaS, EdTech, and eCommerce using Python (Django/FastAPI) and React/Next.js. My work has helped clients improve performance by up to 40%, automate up to 70% of manual workflows, and increase conversions through better UX and system design. Recently, I built: ✅An AI SaaS platform using GPT-4.1 that processes thousands of inputs daily ✅A scalable EdTech system serving thousands of monthly users ✅Multiple business websites that boosted traffic, SEO rankings, and online sales I focus on: ✅Clean, scalable backend architecture ✅Fast, SEO-optimized frontend (Next.js) ✅AI integrations (OpenAI APIs, automation) ✅Payments & subscriptions (Stripe) 🌐 Web Development & Full-Stack SaaS I build SEO-ready, high-conversion web platforms with Next.js, React, and the TanStack ecosystem (Query, Router, Table, Form). From dynamic social feeds and dashboards to admin panels and payment flows — server-side rendering, API routes, real-time updates, and cloud deployment on Vercel, AWS, or self-hosted infrastructure. 📱 Mobile Development (iOS & Android) I deliver native-feeling cross-platform apps with React Native and Flutter, shared business logic, offline-first patterns, push notifications, in-app purchases, and App Store / Google Play release pipelines. TanStack Query and modern state management keep data sync smooth and the UI responsive on every device. 🤖 AI Development & Intelligent Products I integrate LLMs, RAG pipelines, embeddings, and custom ML models into production apps — chatbots, recommendations, content moderation, image/audio generation, and workflow automation. Python (FastAPI, LangChain), OpenAI/Anthropic APIs, vector DBs (Pinecone, Supabase pgvector), and fine-tuning workflows — built for scale, cost control, and real user value. 🎮 Game Development I create engaging interactive experiences from casual mobile games to multiplayer web games and serious gamification inside SaaS products. Unity (C#) and Unreal Engine for 3D and mobile titles; Phaser, Three.js, and PixiJS for browser games; plus backend matchmaking, leaderboards, and real-time sync with WebSockets, Firebase, or custom Node/Python servers. I'm not the type to just "deliver tasks" - I think in terms of product and business impact. If something can be faster, simpler, or more scalable, I'll call it out and fix it. If you need someone who can take a feature from idea → production without hand-holding, we'll get along well. Let's build something solid. less -
Hire TomGetCodeLess
TomGetCodeLess TomGetCodeLess
$20 USD / hour
Technical Product Partner | Full-Stack DevelopmentEstoniaCheck it out: https://www.trustpilot.com/review/getcodeless.tech Software projects rarely fail because of programming alone. More often, they fail because requirements are unclear, priorities shift, communication breaks down, or technical decisions don’t support the business goals. After more than ten years working...Check it out: https://www.trustpilot.com/review/getcodeless.tech Software projects rarely fail because of programming alone. More often, they fail because requirements are unclear, priorities shift, communication breaks down, or technical decisions don’t support the business goals. After more than ten years working across business analysis, quality assurance, project management, and software delivery, I’ve learned how to bridge the gap between business ideas and working software. Today I use modern AI-assisted development to build web and mobile applications significantly faster than traditional workflows, without compromising quality or maintainability. I combine rapid implementation with careful planning, testing, and clear communication throughout the project. Whether you need an MVP, a customer-facing platform, internal business software, or ongoing product development, I can help take your idea from concept to launch—and continue improving it as your business evolves. I believe the best software isn’t the one written with the fewest prompts or the most code. It’s the one that solves the right problem, is delivered on time, and remains easy to extend long after version one. less -
Hire aadips
At Webneco Infotech, we've been building and launching digital products since 2016 — from WooCommerce and Shopify stores to full-scale SaaS platforms & AI automation agents. With 15+ developers and designers on our team, we cover the full stack: design, development, deployment, and post-launch support. ──...At Webneco Infotech, we've been building and launching digital products since 2016 — from WooCommerce and Shopify stores to full-scale SaaS platforms & AI automation agents. With 15+ developers and designers on our team, we cover the full stack: design, development, deployment, and post-launch support. ── E-COMMERCE & CMS ── We've built and customized 50+ WooCommerce stores, 40+ Shopify builds, and 100+ WordPress websites — from simple brochure sites to complex multi-vendor marketplaces. We handle custom theme development, plugin development, WooCommerce extensions, payment gateway integrations, speed optimization, and migrations between platforms. Also experienced with Magento, Webflow, Squarespace, and Wix customizations. ── CUSTOM WEB APPLICATIONS ── For projects that go beyond CMS, we build with PHP/Laravel, MERN stack (MongoDB, Express, React, Node.js), and Next.js. We've delivered SaaS platforms, B2B dashboards, booking systems, ERP/CRM tools, REST API backends, and multi-tenant applications with Stripe billing, JWT auth, and role-based access control. ── AI & AUTOMATION ── We integrate AI into real business workflows: OpenAI/GPT-4 chatbots, RAG pipelines with LangChain, document processing automation, AI customer support agents, and Python/FastAPI backends. Our AI agent for a logistics client now auto-resolves 850+ support tickets daily, cutting costs by 65%. ── MOBILE APPS ── iOS and Android apps built with React Native, cross-platform, production-ready, App Store/Play Store submitted. ── WHY CLIENTS CHOOSE US ── ✔ 4.9 stars from 118 verified reviews ✔ 97% on-budget delivery ✔ Preferred Freelancer Program member (verified) ✔ Dedicated project manager on every project ✔ 90-day bug-free guarantee post-delivery We don't just build, we consult. If a feature isn't worth building, we'll tell you before you pay for it. Ready to discuss your project? Message us.... we typically respond within 1 hour. less -
Hire dmytrobenko
Highly motivated and detail-oriented professional with a strong background in problem-solving. Good team player as well as good at working alone; very sociable. Hardworking and responsible for projects and tasks. Eager to learn a lot of new information and skills every single dayHighly motivated and detail-oriented professional with a strong background in problem-solving. Good team player as well as good at working alone; very sociable. Hardworking and responsible for projects and tasks. Eager to learn a lot of new information and skills every single day less -
Hire alfatrade2
Senior Backend Developer with 10 years of hands-on experience building scalable, production-ready systems. I specialize in Java 21, Spring Boot 3, and microservices architecture. What I deliver: - REST API development and integration - Microservices architecture design and implementation - Database design and...Senior Backend Developer with 10 years of hands-on experience building scalable, production-ready systems. I specialize in Java 21, Spring Boot 3, and microservices architecture. What I deliver: - REST API development and integration - Microservices architecture design and implementation - Database design and optimization (PostgreSQL, MySQL) - Bug fixing and code refactoring - Docker containerization and deployment - Message-driven systems with Apache Kafka My current stack: Java 21, Spring Boot 3.3, PostgreSQL, Kafka, Redis, Docker, Keycloak, Gradle/Maven Why work with me: - I build and maintain a 30-microservice e-commerce platform from scratch - Clean code, clear communication, on-time delivery - Available for both small tasks and long-term projects - Fast response time — usually within 1-2 hours I focus on writing maintainable, well-tested code that works in production. Let's discuss your project — I'm ready to start immediately. less -
Hire victorc309
I possess advanced technologies such as machine learning and large-scale data analysis and processing, and have 8+ years of experience designing, developing and deploying numerous software solutions and applications for individual clients and companies. All the software and projects I have designed and developed have...I possess advanced technologies such as machine learning and large-scale data analysis and processing, and have 8+ years of experience designing, developing and deploying numerous software solutions and applications for individual clients and companies. All the software and projects I have designed and developed have been successfully deployed to clients, delivering benefits that exceeded expectations. [Skill] - OCR & Document AI, Video Analysis, Facial Recognition - CNN, RNN, GANs, Model Training, Validation - Hyperparameter Tuning - Feature Engineering & Selection - Scalable Data Pipelines, ETL Processes, Automated Machine Learning - Model Parallelism - Supervised, Unsupervised, Reinforcement Learning - Cloud ML Platforms, Model Deployment, Model Monitoring - Python ML Libraries Data Processing Statistical Analysis - Transformer Architectures, Fine-tuning Large-scale Models, Text Generation, Classification - Text/Video Summarization - LLM Embeddings, Contextual Representations, Prompt Engineering - Zero-shot / Few-shot Learning - Model Compression, Model Optimization - Ethical AI, Fairness, Bias Mitigation - Hugging Face Transformers, OpenAI, Fairseq - Conversational AI, Dialogue Systems - OpenCV, Image Processing, YOLO, ResNET - Image Segment, Object Detection, Tracking, Recognition, Counting ************************************************************** On this platform, I will continue to do my best to satisfy all the needs of my future clients, and this is also my business motto. Thank you for visiting my profile. Best regards, Victor less -
Hire feodosieg
Hello. I am Feodosie and I build and automate intelligent systems. Full-stack web development, CRM architecture, DevOps infrastructure—I design systems that scale and operate efficiently. Leveraging AI and automation to transform how businesses work, from workflows to operations. (I also handle UX/UI design when...Hello. I am Feodosie and I build and automate intelligent systems. Full-stack web development, CRM architecture, DevOps infrastructure—I design systems that scale and operate efficiently. Leveraging AI and automation to transform how businesses work, from workflows to operations. (I also handle UX/UI design when needed to ensure great user experiences.) Let's build something impactful. Thanks. Feodosie less -
Hire yaircastro
I began my journey in the technology field seven years ago, dedicating most of that time to IT and networking. Passionate about challenges, I am constantly seeking knowledge and striving for excellence in software development. I take great pride in my work and enjoy keeping up to date with the latest trends. I am...I began my journey in the technology field seven years ago, dedicating most of that time to IT and networking. Passionate about challenges, I am constantly seeking knowledge and striving for excellence in software development. I take great pride in my work and enjoy keeping up to date with the latest trends. I am always committed to the quality of my work and meeting timelines. I primarily develop web applications and can work on both back-end and front-end tasks. - Backend: · Node.js & Express.js, Nest.js · Python & Django, Flask · Java & Spring, Hibernate, JSF · C# & ASP.NET · PHP & Laravel - Frontend: · JavaScript & TypeScript · Vue.js, React, Angular - DB: · MySQL, PostgreSQL, Oracle Database, Microsoft SQL Server · MongoDB, CouchDB, Redis, DynamoDB, Cassandra, Neo4j, ArangoDB - Development Practices: · Agile Methodology & Scrum · Unit Testing: B: PHPUnit, JUnit, NUnit, unittest, pytest F: Jest, Mocha · Version Control: GitHub, GitLab, Bitbucket I bring the skills and dedication necessary to successfully achieve your project's goals. If you're interested in my profile, please feel free to contact me anytime. I'd like to discuss your project with you in more detail. Thanks, Yair Castro less -
Hire zoraize
🚀 Need to launch, rebuild, or scale your mobile app? I help startups, founders, and growing businesses build production-ready Flutter, FlutterFlow, and React Native apps that are stable, scalable, and ready for real users. I am a Mobile App Developer with 10+ years of experience building iOS and Android apps across...🚀 Need to launch, rebuild, or scale your mobile app? I help startups, founders, and growing businesses build production-ready Flutter, FlutterFlow, and React Native apps that are stable, scalable, and ready for real users. I am a Mobile App Developer with 10+ years of experience building iOS and Android apps across health & fitness, fintech, healthcare, beauty, social networking, marketplaces, SaaS, booking platforms, and on-demand services. I specialize in: • Flutter app development • FlutterFlow app development • React Native app development • Firebase and Supabase backends • AI-powered mobile apps • API integrations • Existing app improvement and codebase takeover • MVP development for startups • App Store and Google Play deployment 📱 Featured Mobile Apps SlimAI Calorie Tracker — AI health and fitness app with 50K+ downloads and 4.7 rating. Features include AI food recognition, voice calorie logging, nutrition plans, fasting, hydration tracking, subscription billing, and Firebase backend. Xendit Apollo — FinTech mobile app with 100K+ downloads. Built with receipt scanning, approval workflows, role-based permissions, push notifications, financial reporting, and React Native architecture. SpyraBeauty — Social commerce and beauty app with 50K+ downloads. Features include product reviews, ratings, recommendations, chat, influencer profiles, and Firebase integrations. I have also worked on social networking apps, driving school platforms, booking systems, marketplace apps, healthcare tools, productivity apps, and FlutterFlow SaaS products. 🤖 AI Mobile App Development I can add AI chatbots, OpenAI, Claude, and Gemini integrations, AI food recognition, image analysis, voice logging, speech-to-text, smart recommendations, AI search, automation, RAG workflows, and on-device ML. ⚡ Features I Build Authentication, user profiles, subscriptions, in-app purchases, Stripe, RevenueCat, push notifications, real-time chat, Google Maps, geolocation, admin dashboards, role-based access, REST APIs, GraphQL, analytics, reporting, offline support, performance optimization, CI/CD, App Store deployment, and Play Store launch support. 🛠 Tech Stack Flutter, FlutterFlow, React Native, Dart, JavaScript, TypeScript, Firebase, Supabase, Node.js, PostgreSQL, MongoDB, OpenAI, Stripe, RevenueCat, Google Maps, FCM, REST APIs, GraphQL, and GitHub. 💡 Why Clients Hire Me Clients hire me when they need someone who can take ownership, think through the product, and solve real problems. I help with planning, architecture, UX, scalability, performance, monetization, launch preparation, and maintenance. I do not blindly build features. I think through UX, technical risks, edge cases, backend structure, performance, subscriptions, analytics, and future growth so your app is easier to maintain and scale after launch. If you need a Flutter Developer, FlutterFlow Expert, or React Native Developer to build, improve, or launch your app, send me a message. less -
Hire Lazarone1
I’m an AI Agent Engineer, Automation Specialist, and Full-Stack Developer with a deep passion for embedding intelligence into real-world web and mobile products and eliminating manual business workflows through automation. My core focus is designing, building, and deploying AI-driven systems—from LLM-powered agents...I’m an AI Agent Engineer, Automation Specialist, and Full-Stack Developer with a deep passion for embedding intelligence into real-world web and mobile products and eliminating manual business workflows through automation. My core focus is designing, building, and deploying AI-driven systems—from LLM-powered agents and voice assistants to data-aware automation pipelines that integrate seamlessly with production applications. I work extensively with large language models (LLMs), retrieval-augmented generation (RAG), vector databases, embeddings, tool-calling frameworks, and agent orchestration patterns to create systems that reason, act, and scale reliably. On the backend, I build high-performance APIs and services using FastAPI, Flask, Node.js, and Django, with strong experience in async architectures, background workers, and event-driven systems. I regularly work with PostgreSQL, MySQL, Redis, MongoDB, and Neo4j, and design robust data layers using SQLAlchemy, Prisma, and ORM/DAO patterns. For AI workloads, I integrate OpenAI, Anthropic, Ollama, ElevenLabs, and custom inference pipelines, alongside Qdrant, Pinecone, FAISS, and hybrid search setups. On the frontend, I build modern, scalable interfaces using React, Next.js, Vite, Tailwind CSS, and TypeScript, with a strong emphasis on UX for AI-powered tools (real-time streaming, agent state visualization, conversation flows, and admin dashboards). For mobile, I work with React Native and cross-platform architectures to bring AI features directly into user-facing apps. Automation is a major part of my work. I design end-to-end business automation systems using Make.com, n8n, webhooks, cron jobs, message queues, and direct API integrations. This includes automating CRM workflows, email systems, call routing, lead qualification, reporting, and data synchronization across platforms like Twilio, Slack, Google Sheets, Stripe, Shopify, and internal tools. I’m highly experienced in AI voice agents and real-time systems, integrating Twilio, speech-to-text (STT), text-to-speech (TTS), streaming APIs, and conversational state management to build production-ready voice and chat agents. I also work on computer-vision and multimodal pipelines, combining vision models, tracking, and sensor data for advanced use cases. From an infrastructure and MLOps perspective, I deploy and scale systems using Docker, Linux servers, cloud VPS, CI/CD pipelines, and GPU-accelerated environments. I care deeply about observability, logging, error handling, security, and cost optimization in AI systems. Above all, I love turning business problems into automated, intelligent systems—reducing operational friction, increasing efficiency, and building products where AI is not a feature, but a core capability. If you need AI agents, automation pipelines, or full-stack systems that actually work in production, that’s exactly what I build. less
