RAG Developers zum Anheuern
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<-- Why Choose Me --> As a Senior Full Stack Engineer with over 7 years of experience, I specialize in building scalable, secure, and high-performance Agentic AI-driven web applications. My expertise spans across a wide array of technologies including: - Java / Spring Boot / Spring MVC - React / Vue / Node /...<-- Why Choose Me --> As a Senior Full Stack Engineer with over 7 years of experience, I specialize in building scalable, secure, and high-performance Agentic AI-driven web applications. My expertise spans across a wide array of technologies including: - Java / Spring Boot / Spring MVC - React / Vue / Node / Experss.js / Nest.js - Python / FastAPI / Django - C# / .NET / ASP.NET Core / ASP.NET MVC / Angular - PHP / Laravel / Symfony / WordPress - Docker / Kubernetes - AWS Lambda / AWS EC2 / Azure - GitHub / GitLab Actions - Claude Code / Cursor / Lovable / Bolt.new / V0 Throughout my career, I have delivered mission-critical solutions for over 50+ companies, driving improvements in both operational efficiency and customer experience. I excel in building both frontend and backend systems, from complex database architectures to responsive user interfaces. I have successfully reduced system downtimes by up to 40% through proactive monitoring and optimized performance across various platforms. My experience in AI, system integrations, and cloud services (AWS, Azure) has enabled me to consistently enhance the value of the products I build. <-- My Accomplishments --> - Led the development of a scalable microservices architecture for an e-commerce platform, resulting in a 30% increase in system efficiency and 25% faster load times. - Reduced server costs by 40% by migrating legacy systems to cloud infrastructure (AWS, Azure), achieving more reliable and cost-effective hosting. - Developed and deployed an AI-powered recommendation engine that increased user engagement by 35% and conversion rates by 15% for an e-commerce platform. - Implemented advanced CI/CD pipelines, reducing deployment time by 60% and minimizing errors in production systems for clients in fintech and e-commerce industries. - Successfully integrated payment systems and third-party APIs for 20+ enterprise applications, optimizing payment processing and increasing transaction reliability. weniger
borcerne
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I am a seasoned software engineer with a proven track record of delivering cutting-edge, user-centric digital solutions for startups, enterprises, and global brands. My work spans the entire software development lifecycle — from ideation and architecture to deployment and optimization — with a focus on modern web,...I am a seasoned software engineer with a proven track record of delivering cutting-edge, user-centric digital solutions for startups, enterprises, and global brands. My work spans the entire software development lifecycle — from ideation and architecture to deployment and optimization — with a focus on modern web, mobile, and AI-driven applications. Over the years, I’ve mastered the art of blending aesthetics, performance, and scalability, ensuring every project I touch not only meets technical requirements but also drives measurable business growth. 🔹 My Core Expertise Web Development (Frontend & Backend) Modern JavaScript frameworks: React.js, Vue.js, Next.js Backend mastery: Node.js, Django, FastAPI, Laravel Styling & UI: Tailwind CSS, Material UI, custom component libraries REST & GraphQL APIs, real-time applications, PWA development Mobile Development Cross-platform excellence: React Native, Expo, Flutter High-performance native integrations Pixel-perfect, responsive mobile UI/UX Artificial Intelligence & Machine Learning Natural Language Processing (NLP), computer vision, predictive modeling Custom model training & deployment (TensorFlow, PyTorch, scikit-learn) GPT, Vertex AI, OpenAI API integrations for chatbots, automation & intelligent decision-making Data pipelines, analytics dashboards, AI-powered automation Cloud & DevOps AWS, GCP, Azure deployment & scaling Docker, Kubernetes, CI/CD pipelines, serverless architectures PostgreSQL, MySQL, MongoDB, Firebase 💼 Why Clients Choose Me Proven Delivery: Successfully led 20+ full-scale projects from concept to production. Business-Driven Mindset: I translate technical complexity into real-world business outcomes. Scalable Solutions: Architected systems that support millions of users without compromising performance. Transparent Communication: Clear, proactive, and client-focused at every stage. Whether you’re launching a high-growth SaaS platform, building an AI-powered mobile app, or modernizing your digital ecosystem, I bring a unique blend of deep technical expertise and strategic thinking to turn complex visions into flawless reality. weniger
xuezhe315
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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 weniger
yuriihal
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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. weniger
Lazarone1
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stanislavm37 stanislavm37
$39 USD / Stunde
Full-Stack & Mobile | React • Python • Rust • AWSUkraineReact + 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 weniger
stanislavm37
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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! weniger
tonyc00
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I am a Full-Stack Web & Software Developer with 8+ years of experience building modern, secure, and scalable web applications. My expertise includes PHP (Laravel, CodeIgniter), Node.js, Python (Django), React.js, Next.js, JavaScript, HTML5, CSS3, Bootstrap, and jQuery,AI Services. I specialize in Figma to...I am a Full-Stack Web & Software Developer with 8+ years of experience building modern, secure, and scalable web applications. My expertise includes PHP (Laravel, CodeIgniter), Node.js, Python (Django), React.js, Next.js, JavaScript, HTML5, CSS3, Bootstrap, and jQuery,AI Services. I specialize in Figma to HTML/React/Next.js conversions, and have strong experience with WordPress and Shopify, including custom themes, plugins, and e-commerce solutions. I also work with Artificial Intelligence solutions, including AI integrations and Retrieval-Augmented Generation (RAG) systems. With a strong focus on performance, security, and user experience, I turn complex ideas into clean, reliable, and business-ready digital solutions. weniger
asmasattar4
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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. weniger
va01v
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At Core Techies, we don’t just build products; we create intelligent, AI-powered platforms that redefine industries. Whether you’re building your first AI-driven MVP or scaling your platform to the next level, we turn your ideas into reality faster, smarter, and more powerfully. With over 12 years of experience on...At Core Techies, we don’t just build products; we create intelligent, AI-powered platforms that redefine industries. Whether you’re building your first AI-driven MVP or scaling your platform to the next level, we turn your ideas into reality faster, smarter, and more powerfully. With over 12 years of experience on Freelancer.com, we bring AI-first execution to every project. Our deep technical expertise combined with agility ensures your solution isn’t just great — it’s built to perform. We don’t just solve problems; we create solutions that drive efficiency, innovation, and success. Our Expertise: ✅ AI Development ⚡Integrate GPT-4, Claude, and Gemini for advanced AI models ⚡Build AI chatbots, voice bots, and video bots for sales, support, and operations ⚡Use Generative AI (Text, Image, Audio) to automate content creation and enhance workflows ⚡Deliver AI-powered MVPs in under 30 days — scalable and robust ✅ AI Automation ⚡Automate workflows across HR, finance, and customer service ⚡ Build real-time AI-powered automation that scales with your business ⚡Maximize productivity with AI-driven tools for process optimization ✅ AI Agents ⚡Deploy custom AI agents for 24/7 customer engagement ⚡Build voice bots and video bots that provide human-like interactions ⚡Integrate AI assistants to optimize workflow and boost productivity ✅ Tools We Use ⚡We leverage cutting-edge tools to bring your AI solutions to life: ⚡GPT-4, Claude, and Gemini for natural language processing ⚡TensorFlow, PyTorch for deep learning models ⚡Dialogflow, Rasa, and BotPress for AI chatbots ⚡OpenAI API for text, image, and video AI interactions ⚡AWS, Google Cloud for scalable infrastructure ⚡Zapier, Integromat, n8n, and Make for AI-powered automation ⚡VAPI, Trellio, and Docker for API management and workflow optimization ✅ Why Choose Us? ⚡ Fast Delivery ⚡MVPs in weeks, not months. Start driving growth immediately. ✅ AI-First Mindset ⚡We embed intelligence into every solution, ensuring long-term scalability. ✅ Trusted Security ⚡Proven by global teams, including defense-grade clients. Your solution is secure and reliable. ✅ Continuous Growth ⚡Our ongoing support, iteration, and optimization ensure your product scales with your business. Ready to revolutionize your future with AI? Whether you need an AI co-pilot or a full-stack AI partner, we’re here to bring your vision to life. Let’s launch your AI-powered product today — faster, smarter, and more intelligently than ever. weniger
C0RETECHIES
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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 weniger
patrickag1214
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