RAG Developers For Hire
Showing 35 results
Sponsored Freelancers
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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
Hire Lazarone1
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React + React Native + Python + Rust | AWS | APIs | AI 🚀 Senior Full-Stack & Mobile Engineer (React, TypeScript, Python, Rust) If you're building a modern web or mobile app, scaling backend APIs, or adding AI features with AWS infrastructure, I can help. I specialize in: 🔹 Frontend (React / TypeScript) ▪ React...React + React Native + Python + Rust | AWS | APIs | AI 🚀 Senior Full-Stack & Mobile Engineer (React, TypeScript, Python, Rust) If you're building a modern web or mobile app, scaling backend APIs, or adding AI features with AWS infrastructure, I can help. I specialize in: 🔹 Frontend (React / TypeScript) ▪ React (Hooks, Context, Suspense) ▪ Next.js (SSR, SSG, ISR, App Router) ▪ TypeScript (strict typing, scalable architecture) ▪ State: Redux Toolkit, Zustand, React Query ▪ UI: TailwindCSS, Shadcn UI, MUI ▪ Forms: React Hook Form, Zod ▪ Auth: JWT, OAuth, NextAuth ▪ Testing: Jest, RTL, Playwright ▪ Performance, SEO, responsive UI ▪ REST, GraphQL, WebSockets, SSE 🔹 Mobile App Development (iOS / Android) ▪ React Native (Expo + CLI) ▪ Cross-platform apps (iOS + Android) ▪ Swift (native iOS) ▪ Flutter (Dart cross-platform) ▪ Navigation (React Navigation) ▪ State management (Redux Toolkit, Zustand) ▪ API integration (REST / GraphQL) ▪ Push notifications (Firebase / Expo) ▪ App Store & Google Play deployment ▪ OTA updates (Expo EAS) ▪ Performance optimization 🔹 Backend (Python / APIs / Microservices) ▪ FastAPI, Django, DRF, Flask ▪ REST APIs (OpenAPI, versioning) ▪ Auth: JWT, OAuth2, RBAC ▪ PostgreSQL (schema design, optimization) ▪ Redis (caching, rate limiting) ▪ Background jobs: Celery ▪ Queues: SQS, RabbitMQ ▪ File uploads, S3 storage ▪ Stripe, Twilio, SendGrid integrations ▪ Testing: Pytest 🔹 Rust (High-Performance Services) ▪ Axum / Actix ▪ Tokio async systems ▪ High-throughput APIs ▪ SQLx / Diesel ▪ Reliable microservices 🔹 AI Infrastructure / LLM Systems ▪ OpenAI, Anthropic, OSS models ▪ RAG pipelines + embeddings ▪ Pinecone, Qdrant, FAISS ▪ Streaming AI (SSE / WebSockets) ▪ Prompt workflows + structured outputs ▪ Cost control + rate limiting 🔹 DevOps / AWS ▪ AWS: EC2, S3, RDS, Lambda, API Gateway ▪ Docker / Docker Compose ▪ CI/CD (GitHub Actions) ▪ Nginx, Linux, SSL ---------------------------------------------------- ✅ I help teams: ▪ Build MVPs fast ▪ Design scalable APIs & microservices ▪ Improve performance (PostgreSQL & APIs) ▪ Build secure auth systems ▪ Deploy reliable AWS infrastructure ▪ Add AI features (RAG, LLM workflows) ▪ Refactor legacy code into clean architecture ---------------------------------------------------- ⚙ Tech Stack React • React Native • TypeScript • Next.js • Redux Toolkit • Zustand • React Query • TailwindCSS • Shadcn UI • FastAPI • Django • DRF • Python • Rust • Axum • Actix • PostgreSQL • Redis • Celery • Docker • AWS • EC2 • S3 • RDS • Lambda • API Gateway • CI/CD • WebSockets • SSE • REST • GraphQL • Stripe • OAuth • JWT • Microservices • LLM • RAG • Pinecone • Qdrant • OpenAI • Expo • iOS • Android • Firebase • Push Notifications • Swift • Flutter less
Hire stanislavm37
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matheussilva114 matheussilva114
$30 USD / hour
FULL-STACK ENGINEER| DATA SCIENTIST| AI SPECIALISTBrazilAs a Senior Full-stack developer, Data Scientist and AI/ML Engineer with over 6 years of experience, I specialize in designing, developing, and deploying Software Products with good machine learning solutions. My expertise spans across Machine Learning, Deep Learning, NLP, Computer Vision, and Generative AI,...As a Senior Full-stack developer, Data Scientist and AI/ML Engineer with over 6 years of experience, I specialize in designing, developing, and deploying Software Products with good machine learning solutions. My expertise spans across Machine Learning, Deep Learning, NLP, Computer Vision, and Generative AI, enabling businesses to harness the full potential of AI for automation, insights, and innovation. less
Hire matheussilva114
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Hey there! Thanks for popping by my profile - it’s great to have you here. Feel free to have a nose around and say hello if something catches your eye! With over 7+ years of experience in Artificial Intelligence (AI), Machine Learning (ML), and advanced software engineering, I specialize in designing and implementing...Hey there! Thanks for popping by my profile - it’s great to have you here. Feel free to have a nose around and say hello if something catches your eye! With over 7+ years of experience in Artificial Intelligence (AI), Machine Learning (ML), and advanced software engineering, I specialize in designing and implementing intelligent systems that solve real-world business challenges. My work spans AI development, data science, automation, and full-stack application engineering, serving startups, global enterprises, research institutions, and government organizations. 1. AI & Machine Learning - Expertise in custom AI model development, predictive analytics, neural networks, and natural language processing (NLP). - Skilled in data modeling, training pipelines, and deployment of scalable ML systems using frameworks such as TensorFlow, PyTorch, and scikit-learn. - Strong focus on developing AI solutions that drive automation, improve decision-making, and deliver measurable business outcomes. 2. Software & Web Development - Proficient in .NET, PHP, Python, JavaScript (React, Node.js, Angular), and CodeIgniter for full-stack development. - Experienced in building custom web applications, enterprise portals, and API-driven solutions with clean, maintainable architecture. - Skilled in responsive front-end design using Tailwind CSS, Bootstrap, and modern UI/UX frameworks. 3. Data Systems & Automation - Strong background in database architecture and optimization with MS SQL Server, MySQL, PostgreSQL, and Microsoft Access. - Expertise in Google Sheets automation, including custom scripts, add-ons, and data workflows for efficiency and integration with cloud services. 4. E-Commerce & Business Platforms - Hands-on experience with Shopify, WooCommerce, BigCommerce, and Magento, including setup, customization, and optimization. - Knowledge of Salesforce development (APEX, Lightning Components, and integrations) for CRM and automation. 5. Mobile & Cross-Platform Applications - Development of hybrid mobile apps using React Native and Flutter, with a focus on smooth user experience and performance. 6. Design & User Experience - Skilled in UI/UX wireframing, prototyping, and visual branding to ensure that each product is not only functional but intuitive and visually engaging. less
Hire va01v
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I build AI-driven backend systems that think, learn, and scale. Most companies use AI in fragments—a chatbot here, an automation there. I help startups and enterprises build complete AI ecosystems by integrating Large Language Models (LLMs) into robust, production-grade backend architectures. Whether you are building...I build AI-driven backend systems that think, learn, and scale. Most companies use AI in fragments—a chatbot here, an automation there. I help startups and enterprises build complete AI ecosystems by integrating Large Language Models (LLMs) into robust, production-grade backend architectures. Whether you are building an AI SaaS MVP from scratch or adding RAG-based intelligence to an existing platform, I deliver clean, maintainable, and secure code. What I bring to your project: 1. AI Integration: Expert in OpenAI (o1/GPT-4), Claude 3.5, and Gemini 2.0. I specialize in RAG (Retrieval-Augmented Generation) and AI Agent workflows using LangChain and CrewAI. 2. Backend Excellence: Scalable microservices built with FastAPI, Python, or NestJS. I focus on high-concurrency, security, and performance. 3. Vector Infrastructure: Implementation of Pinecone, Weaviate, or PGVector for efficient data retrieval. 4. SaaS Architecture: Multi-tenant database design, Stripe subscription logic, and RBAC (Role-Based Access Control). Why work with me? - Speed to MVP: I focus on getting your AI SaaS to market in 3–6 weeks without technical debt. - Product Thinking: I don't just follow tickets; I ask "Why?" to ensure the feature actually drives user value. - Security First: I ensure your AI integrations are prompt-injection resistant and GDPR/SOC2 compliant. TECHNICAL STACK: - AI & LLM: OpenAI API, LangChain, RAG, Prompt Engineering, Vector DBs (Pinecone) - Backend: Python (FastAPI, Django), Node.js (NestJS, Express), Go - Databases: PostgreSQL, MongoDB, Redis, Supabase - Cloud & DevOps: AWS (Lambda, ECS), Docker, GitHub Actions, Vercel - Integrations: Stripe, Auth0, Twilio, HubSpot, Slack API less
Hire yuriihal
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Hello, I am a full-stack developer with extensive DevOps experience, particularly in designing scalable systems using Kubernetes, Azure, and AWS. I also have expertise in AI/ML engineering and deliver high-quality, production-ready solutions. With over 5 years of experience, I’ve worked on everything from Generative...Hello, I am a full-stack developer with extensive DevOps experience, particularly in designing scalable systems using Kubernetes, Azure, and AWS. I also have expertise in AI/ML engineering and deliver high-quality, production-ready solutions. With over 5 years of experience, I’ve worked on everything from Generative AI to business analytics and automation, helping organizations turn complex data into meaningful, actionable insights. I love building scalable, real-world AI solutions—whether it’s improving recommendations, automating workflows, or pushing the boundaries of LLMs and RAG-based AI systems. My expertise spans LangChain, Python automation, advanced machine learning techniques, and cloud-based AI solutions using Azure OpenAI and Azure AI/ML. I have hands-on experience deploying AI models on Azure, optimizing LLM applications, and integrating AI into enterprise systems for enhanced scalability and performance. My Expertise -AI/ML : Large Language Model, NLP, RAG, PyTorch, Deep learning, MLOps, LLaMA, AI Agent Development, OpenAI API, AI App Development, LangChain, AI Chatbot, Azure OpenAI, Azure AI/ML -Data Engineering: Python, R, Numpy, Pandas, GeoPandas, Linear Algebra, Probability, Statistics, Databricks, Microsoft Power BI, snowflake, Big Data Processing, Azure Data Factory, Azure Synapse, Azure SQL, Azure AI Search -Programming Languages: JavaScript/TypeScript, Python, R, C#, C++, PHP -Frontend: HTML5, CSS3, React.js, Next.js, Angular11, Tailwind CSS, Antd, PrimeReact, ShadCN, TanStack, Redux, zustand, Context API, RSuite -Backend: Node, Express, Django, Flask, .NET Core, ASP.NET, Laravel, Firebase, Superbase, Docker, Kubenetes -Database: SQLite, MySQL, MariaDB, PostgreSQL, MongoDB, Redis,Oracle -Cloud: AWS (EC2, S3, Lambda, Elasticsearch, Sagemaker), Azure(Logic App, APIM, Function App, Blob Storage, Azure SQL, Virtual Network, Azure CosmosDB, Azure DevOps, CI/CD,Azure AI Search, Azure CLI, PowerShell, Terraform, Azure Portal) Beyond the tech, I thrive on solving tough problems, collaborating with brilliant minds, and creating AI-driven solutions that actually make an impact. If you’re working on something exciting in AI, let’s connect—I’m always up for an interesting challenge! less
Hire tonyc00
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My name is Patrick Aguilar, and I’ve been working with clients around the world for over 7 years. I enjoy building software because if I can imagine a solution, I can usually turn it into something real and useful. I strongly believe that the best results come from helping clients achieve their goals, not just writing...My name is Patrick Aguilar, and I’ve been working with clients around the world for over 7 years. I enjoy building software because if I can imagine a solution, I can usually turn it into something real and useful. I strongly believe that the best results come from helping clients achieve their goals, not just writing code, and that mindset has shaped my long term client relationships. Core Skills & Expertise •Python, AI/ML, Chatbots, Telegram Bots, Automation •Web & Backend: Django, FastAPI, Go, C#/.NET, Node.js, REST APIs •Frontend: React, Vue, modern UI development •Mobile Apps: React Native, Flutter, native integrations •Cloud & Integrations: AWS, Severless, Azure, Firebase, third-party APIs, custom workflows less
Hire patrickag1214
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I’m a full-stack developer who builds production-ready web apps and AI-powered features: SaaS platforms, admin dashboards, API integrations, and e-commerce customizations. I deliver end-to-end—from database design and backend architecture to clean UI, deployment, and ongoing optimization. What I build - SaaS MVPs...I’m a full-stack developer who builds production-ready web apps and AI-powered features: SaaS platforms, admin dashboards, API integrations, and e-commerce customizations. I deliver end-to-end—from database design and backend architecture to clean UI, deployment, and ongoing optimization. What I build - SaaS MVPs and scalable web platforms (multi-tenant, roles/permissions, subscriptions) - Admin panels and internal tools (CRM-style workflows, reporting, exports) - API integrations & automation (webhooks, third-party services, background jobs) - E-commerce features and custom themes (Shopware, WooCommerce/WordPress, custom storefronts) - Media features (uploads, encoding pipelines, moderation flows when needed) - AI features: chat assistants, content generation, summarization, extraction from PDFs/images, semantic search, smart workflows Tech stack - Backend: PHP (Laravel), Node.js (Express/NestJS), REST/JSON APIs, webhooks, queues, cron jobs - Frontend: React, Next.js, TypeScript, Inertia.js, modern HTML/CSS - Database: MySQL/MariaDB, PostgreSQL/Supabase, Prisma, schema design & optimization - DevOps: Nginx, Linux servers, SSL (Let’s Encrypt/Certbot), Cloudflare, CI/CD, basic AWS services - AI tooling: embeddings/vector DBs, OpenAI API integration, evaluation/logging patterns If you share your requirements (or Figma designs), I can propose the best approach, estimate timeline, and deliver in phases so you can launch faster. less
Hire omarfranciscoa
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am an AI Engineer specializing in building production-ready intelligent systems across Computer Vision, Large Language Models (LLMs), Voice AI, and AI-powered web applications. My expertise lies in transforming research ideas and prototypes into scalable, real-world products with efficient architectures, optimized...am an AI Engineer specializing in building production-ready intelligent systems across Computer Vision, Large Language Models (LLMs), Voice AI, and AI-powered web applications. My expertise lies in transforming research ideas and prototypes into scalable, real-world products with efficient architectures, optimized performance, and seamless user experiences. I work across the full stack — from AI model development and backend engineering to modern web platforms — enabling organizations to integrate AI directly into usable products and services. 🔹 Computer Vision I design and deploy advanced image and video intelligence systems, including: Object detection, segmentation, and multi-object tracking Real-time video analytics and behavior understanding Moving object detection using Meta AI’s Segment Anything Model (SAM) High-performance inference pipelines optimized for latency and accuracy 🔹 Large Language Models & NLP I develop LLM-powered applications and AI automation systems, including: Applications using GPT-4o, Claude, Llama, Mistral, and Gemini Retrieval Augmented Generation (RAG) with LangChain and LlamaIndex Vector database integrations: Pinecone, Weaviate, Qdrant, OpenSearch Document intelligence systems with OCR, semantic search, and AI assistants Agent-based systems for analytics, knowledge management, and decision support 🔹 Voice AI & Speech Systems Hands-on experience delivering end-to-end Voice AI solutions: Real-time voice cloning and voice changer systems (RVC + React Native + FastAPI) AI-powered medical interview analysis (Whisper + Claude) Voice authentication and speaker recognition APIs using SpeechBrain AI voice agents for customer support (Deepgram, GPT, ElevenLabs, Twilio) Improvements in speaker diarization using Pyannote 🔹 AI-Powered Web Development I build scalable AI-integrated web applications, including: Full-stack development with React, Next.js, and modern frameworks Backend APIs using FastAPI and microservices AI dashboards, analytics platforms, and SaaS products Real-time AI interfaces for chatbots, voice assistants, and video analytics 🔹 Deployment & Engineering Cloud deployment on AWS, Azure, and GCP Backend engineering with FastAPI Programming in Python, Java, and C Focus on scalability, latency optimization, and maintainable architectures 💡 My goal is to build intelligent systems that deliver real-world impact by turning AI research into scalable products. less
Hire rakam26
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Hi, I'm Oleksii a Senior Web & Mobile Developer with over 9 years of experience building fast, scalable, and user-centered applications for startups and enterprises. I specialize in crafting modern digital products that work seamlessly across platforms from responsive web apps to high-performance mobile solutions....Hi, I'm Oleksii a Senior Web & Mobile Developer with over 9 years of experience building fast, scalable, and user-centered applications for startups and enterprises. I specialize in crafting modern digital products that work seamlessly across platforms from responsive web apps to high-performance mobile solutions. My focus is always on clean architecture, maintainable code, and delivering an exceptional user experience. Whether you need a complete product built from the ground up, a CMS-powered website, or a cross-platform mobile app, I bring both technical depth and a practical, results-driven mindset to every project. Core Skills & Expertise - Frontend: React, Next.js, Flutter, React Native - Backend: Node.js, Express, REST, GraphQL, Firebase - CMS & Web Platforms: WordPress, Strapi, Sanity, headless CMS integrations - Mobile: Android (Kotlin), iOS (Swift), Flutter cross-platform apps - Cloud & DevOps: AWS, Google Cloud, Vercel, Netlify, CI/CD pipelines - Other Expertise: API integrations, real-time features, authentication, testing & optimization If youre looking for a reliable engineer who can handle both web and mobile development with precision, scalability, and great communication Id be glad to help bring your project to life. less
Hire AlexVydrin
