LangChain Experts For Hire
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Sponsored Freelancers
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Hire DeMit19
Overview I build scalable, future-proof digital ecosystems as a Senior Full-Stack Developer specializing in Web3, AI/Automation, and cross-platform mobile. I turn ideas into polished products—fast, reliably, and with cutting-edge tech. If you need a developer who is reliable, fast-moving, and deadline-obsessed, you’ve...Overview I build scalable, future-proof digital ecosystems as a Senior Full-Stack Developer specializing in Web3, AI/Automation, and cross-platform mobile. I turn ideas into polished products—fast, reliably, and with cutting-edge tech. If you need a developer who is reliable, fast-moving, and deadline-obsessed, you’ve found the right partner. Tech Expertise • Backend & APIs: REST, GraphQL, gRPC, WebSockets, RabbitMQ, Redis, Kafka • Desktop: Electron, Tauri • DevOps & Cloud: Docker, Kubernetes, AWS, GCP, Azure, CI/CD (GitHub Actions, GitLab CI) • Databases: SQLite, MariaDB, DynamoDB, Firebase, Firestore • Testing & QA: Jest, PyTest, Selenium, Cypress, Postman, unit/integration/E2E testing • Scripting & Automation: Bash, PowerShell, Python scripts, cron jobs • Legacy & Maintenance: PHP legacy, jQuery, WordPress, .NET Framework, migration projects • Version Control & Workflow: Git, GitHub/GitLab/Bitbucket, code reviews, agile/scrum • Automation & Integrations: monday.com API, Zapier, Make (Integromat), n8n, REST APIs, webhooks Why Partner With Me ⚡ Fast & Deadline-Driven – Agile sprints, over‑communication, on‑time delivery. 🔒 Reliable & Secure – OWASP best practices, clean code, scalable infrastructure. 🧠 Cutting‑Edge & Trend‑Sensitive – Always integrating the latest in AI, Web3, and modern frameworks. 🗣 Clear Communication – No ghosting, no jargon. You’re always in the loop. What I Offer • End‑to‑End Development – From concept to deployment (web, mobile, backend). • AI‑Powered Solutions – Custom chatbots, LLM integration, automation pipelines. • Web3 & dApps – Smart contracts, DeFi, NFT projects, crypto payments. • Mobile + Web Synergy – Seamless ecosystems across devices. Let’s Build Something Great I take pride in deeply understanding your goals and delivering reliable, visually polished, high‑performance solutions. Ready to work with a proactive, technically versatile developer? Let’s connect less -
Hire jcrbahia
⭐⭐⭐⭐⭐ IA aplicada a negocios: agentes, RAG y automatización · Python backend Transformo "ideas con IA" en sistemas estables para PYMEs y agencias. Construyo y opero mis propios productos (LaiaDesk, NexoSmart), aplicando esa experiencia real a tu proyecto. Servicios: Agentes/copilotos para atención, ventas y...⭐⭐⭐⭐⭐ IA aplicada a negocios: agentes, RAG y automatización · Python backend Transformo "ideas con IA" en sistemas estables para PYMEs y agencias. Construyo y opero mis propios productos (LaiaDesk, NexoSmart), aplicando esa experiencia real a tu proyecto. Servicios: Agentes/copilotos para atención, ventas y back-office. RAG sobre tus datos con control de costes. Automatización (n8n, Make, Zapier) y workers a medida. Backend e integraciones (CRM, ERP, pagos, APIs). Stack: IA: Claude, OpenAI, Mistral, LangGraph, CrewAI. Backend: Python (FastAPI/Django), Node.js. Integraciones: HubSpot, Salesforce, Stripe, WhatsApp, Odoo, QGIS. Infra: AWS/GCP/Azure, Docker, CI-CD. Datos: PostgreSQL, MySQL, MongoDB, Redis. Metodología: Llamada previa para alinear alcance. Código documentado, pruebas críticas y manual de operación. Horario EU/Latam. Español e inglés. ¿Automatizar flujos o conectar sistemas? Hablemos 15 min. Applied AI for business: agents, RAG & automation · Python backend ⭐⭐⭐⭐⭐ I turn "AI ideas" into stable systems for SMEs and agencies. I build and operate my own AI products (LaiaDesk, NexoSmart), bringing that real-world experience to your project. Services: Agents/copilots for support, sales, and back-office. RAG pipelines over your data with cost control. Automation (n8n, Make, Zapier) and custom workers. Backend and integrations (CRM, ERP, payments, APIs). Stack: AI: Claude, OpenAI, Mistral, LangGraph, CrewAI. Backend: Python (FastAPI/Django), Node.js. Integrations: HubSpot, Salesforce, Stripe, WhatsApp, Odoo, QGIS. Infra: AWS/GCP/Azure, Docker, CI-CD. Data: PostgreSQL, MySQL, MongoDB, Redis. Methodology: Scoping call before quoting. Documented code, critical tests, and ops notes. EU/Latam hours. Spanish and English. Ready to automate or integrate? Let's talk for 15 min. less -
Hire minjiek
AI Engineer building production multi-agent systems. 14 years delivering 50+ projects across government, transport, and real estate (95%+ on-time). Now: 10+ autonomous AI agents running 24/7 — orchestration, RAG pipelines, LLM automation, browser-driven workflows. Stack: Python, TypeScript, LangChain, OpenAI,...AI Engineer building production multi-agent systems. 14 years delivering 50+ projects across government, transport, and real estate (95%+ on-time). Now: 10+ autonomous AI agents running 24/7 — orchestration, RAG pipelines, LLM automation, browser-driven workflows. Stack: Python, TypeScript, LangChain, OpenAI, Claude, Docker, K8s Background: Agile/Scrum, Cross-team Leadership, Full-lifecycle PM 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 -
Hire quan9824
Hello, I am Doan. Welcome to my profile. Being a Full-Stack Developer with the following advantages. ★100% Job Completion Rate★100% Project Delivered on Time★Best Review on all the projects★Dynamic Response★Available for Emergency Modifications★Full Time★ I have experience creating excellent web applications, AI...Hello, I am Doan. Welcome to my profile. Being a Full-Stack Developer with the following advantages. ★100% Job Completion Rate★100% Project Delivered on Time★Best Review on all the projects★Dynamic Response★Available for Emergency Modifications★Full Time★ I have experience creating excellent web applications, AI systems and trading bots. I had a close working relationship with my clients, was aware of their needs, and offered the best services. ✨ My Skillsets ✨ ✪ TRADING SYSTEMS: Algorithmic trading software development ~ MetaTrader (MQL4/5), NinjaTrader (NinjaScript), cTrader (C#) ~ TradingView (Pine Script), TradeStation (EasyLanguage), Quantower (C#/.NET) ~ Interactive Brokers (TWS API), DAS Trader Pro, Sterling Trader Pro ~ Strategy backtesting, optimization, and live deployment ~ Custom indicators, execution logic, and risk‑managed automation ✪ WEB APP ~ Wordpress ~ Frontend: React, Svelte, Vue (HTML, CSS, SCSS, JavaScript, TypeScript) ~ Backend: Node.js with Express, Django (Python), and Laravel (PHP) ~ Web scraping ✪ AI SYSTEM: Machine learning, Deep learning, Reinforcement learning ~ Object Detection Tracking and Counting. ~ Image Processing, Recognition and Synthesizing. ~ Computer Vison, OCR, OpenCV. ~ Text Data Classification and Processing. ~ Time Series Forecasting and Prediction. ✪ Strengths Full-stack versatility with a balanced focus on performance and user experience Ability to quickly adapt to new technologies and project requirements Strong problem-solving, debugging, and collaboration skills Committed to writing clean, maintainable code and following best practices less -
Hire arilrivenski
Hi, I am Aril and I’m a senior software engineer with 9+ years of experience building web platforms, automation systems, AI tools, and mobile applications for startups and businesses. Over the years, I’ve worked on everything from SaaS platforms and AI-powered workflows to mobile apps, backend systems, and cloud...Hi, I am Aril and I’m a senior software engineer with 9+ years of experience building web platforms, automation systems, AI tools, and mobile applications for startups and businesses. Over the years, I’ve worked on everything from SaaS platforms and AI-powered workflows to mobile apps, backend systems, and cloud infrastructure. I enjoy building products that are clean, scalable, and actually useful for real business problems. Recently, most of my work has been focused on AI automation, workflow systems, and modern full-stack applications using technologies like OpenAI, Node.js, Python, React, Next.js, Flutter, and cloud services. I have successfully developed: - AI-powered SaaS platforms - Business process automation systems - Multi-agent AI workflows - CRM & ERP integrations - WhatsApp & Telegram automation bots - RAG-based AI applications - Mobile apps for Android & iOS - Cloud-native backend infrastructures - Real-time dashboards and APIs My main stack includes: - Frontend: React, Next.js, Vue.js, TypeScript, Tailwind CSS - Backend: Node.js, Express.js, NestJS, Python, FastAPI, Django, Laravel - AI & Automation: OpenAI API, LangChain, AI Agents, RAG Systems, n8n, Zapier - Mobile: Flutter, React Native, Android, iOS - Blockchain: Solidity, Ethereum, Solana, Web3.js - Database & Cloud: PostgreSQL, MongoDB, Redis, Firebase, AWS, Docker, Kubernetes I can help with: - Full-stack web development - AI integrations and automation - SaaS platform development - Mobile app development - API development and integrations - Cloud infrastructure & DevOps - System architecture and scaling - MVP development for startups I communicate clearly, work independently, and focus on delivering stable, high-quality solutions that are ready for real users and business growth. less -
Hire jonatanoroc
I'm a software engineer specializing in AI automation, data intelligence, IoT, and robotics. What sets me apart? I don't believe in one-size-fits-all solutions. Every project gets a completely custom approach tailored to your specific budget, timeline, and requirements. What I Build: AI Automation Systems that...I'm a software engineer specializing in AI automation, data intelligence, IoT, and robotics. What sets me apart? I don't believe in one-size-fits-all solutions. Every project gets a completely custom approach tailored to your specific budget, timeline, and requirements. What I Build: AI Automation Systems that eliminate repetitive tasks and boost efficiency Smart Data Intelligence platforms that turn your data into actionable insights IoT Solutions connecting your devices and processes seamlessly Robotics Integration for industrial and commercial applications Custom Software that bridges the gap between complex tech and real-world needs My Approach: Your project is unique, so your solution should be too. I work backwards from your goals—whether you need a quick prototype, a scalable enterprise system, or something completely experimental. I adapt my process to fit your world, not the other way around. Perfect For: Businesses ready to automate manual processes Startups needing intelligent systems that scale with growth Companies drowning in data who want to unlock its potential Anyone with an interesting challenge and the vision to solve it Ready to turn your automation dreams into reality? Let's discuss how we can build something extraordinary together—exactly the way you need it. less -
Hire vinhtq0703
I'm a expert developer and I'm here to help you complete the project in the perfect way. I have over 10 years of experience in website development (e-commerce, advertising, information introduction, ...) and mobile app development. I'm experienced in many different programming languages (PHP, Laravel, Magento,...I'm a expert developer and I'm here to help you complete the project in the perfect way. I have over 10 years of experience in website development (e-commerce, advertising, information introduction, ...) and mobile app development. I'm experienced in many different programming languages (PHP, Laravel, Magento, Wordpress, OpenCart, ReactJs, react native, flutter, scraping . . .). I will bring the best results and efficiency when implementing projects and hope to make my customers satisfied. less -
Hire arturg6
Hello and welcome! I am a Full Stack Developer, AI Engineer, and Mathematics Researcher with a strong academic background in mathematics, scientific computing, machine learning, and software development. My experience combines advanced mathematical problem-solving, research methodology, and modern software...Hello and welcome! I am a Full Stack Developer, AI Engineer, and Mathematics Researcher with a strong academic background in mathematics, scientific computing, machine learning, and software development. My experience combines advanced mathematical problem-solving, research methodology, and modern software engineering to create efficient, scalable, and intelligent solutions for businesses, startups, and individuals. 🎓 Academic Background ✓ Master's Degree in Mathematics ✓ Doctoral Research Experience in Mathematics ✓ Published Research Author ✓ Scientific Computing & Mathematical Modeling ✓ Advanced Statistics & Data Analysis 💻 Development Expertise 🔹 Frontend Development • React.js • Next.js • Vue.js • TypeScript • JavaScript (ES6+) • HTML5, CSS3, Tailwind CSS 🔹 Backend Development • Node.js & Express.js • Python (Django, Flask, FastAPI) • PHP & Laravel • RESTful APIs • Authentication & Security 🔹 Database Systems • PostgreSQL • MySQL • MongoDB • SQLite • Database Design & Optimization 🤖 Artificial Intelligence & Data Science • OpenAI & ChatGPT Integration • AI Chatbot Development • LangChain Applications • Machine Learning Solutions • Natural Language Processing (NLP) • TensorFlow & PyTorch • Data Analytics & Visualization • Predictive Modeling • Automation & Intelligent Workflows ☁️ Cloud & DevOps • AWS Cloud Services • Google Cloud Platform (GCP) • Docker & Kubernetes • CI/CD Pipelines • Linux Server Administration • Nginx & Apache • Infrastructure Automation 📊 Mathematics & Research My mathematical background enables me to approach projects with strong analytical thinking and precision. Areas of interest include: • Machine Learning • Graph Theory • Optimization Algorithms • Statistical Analysis • Scientific Computing • Linear Programming • Mathematical Modeling • Data Mining ⭐ Why Choose Me? ✓ Strong Problem-Solving Skills ✓ Research-Oriented Mindset ✓ Clean & Maintainable Code ✓ Fast and Clear Communication ✓ Reliable Project Delivery ✓ Scalable and Secure Solutions ✓ Long-Term Technical Support 🎯 My Goal To help clients transform ideas into high-quality digital products through modern web technologies, artificial intelligence, and data-driven solutions. Whether you need a web application, AI-powered system, automation workflow, API integration, database solution, or custom software, I am ready to help bring your vision to life. 📩 Feel free to contact me to discuss your project. less -
Hire lehmanj2
⭐ 10+ Years Experience | AI & WordPress Specialist | 100% Satisfaction Guaranteed I've spent 10 years building web products, and the ones that actually move the needle for a business are never just websites. They're systems. My work sits at the intersection of WordPress, Shopify, and AI - helping store owners and...⭐ 10+ Years Experience | AI & WordPress Specialist | 100% Satisfaction Guaranteed I've spent 10 years building web products, and the ones that actually move the needle for a business are never just websites. They're systems. My work sits at the intersection of WordPress, Shopify, and AI - helping store owners and founders automate the repetitive stuff, convert more visitors, and stop paying for problems that technology can solve. If you need a chatbot that knows your products inside out, a Shopify store built for real conversion, or a WordPress site connected to OpenAI, I can build that for you. WHAT I BUILD 🤖 AI Chatbots and OpenAI Integration GPT-powered assistants trained on your content and FAQs, built with the OpenAI API and Python or Node.js backends. Not a plugin. A real, custom solution. 🛍️ Shopify Development Custom themes, checkout flows, app integrations, and performance fixes. New stores and struggling ones alike. 🌐 WordPress and WooCommerce Custom plugins, theme development, Elementor Pro, WooCommerce stores, and site migrations. Deep WordPress knowledge, not just a page builder user. ⚙️ Workflow Automation Automate your content, leads, and operations by connecting your site to OpenAI, CRMs, email tools, and more using Python and Node.js. 🔧 Full-Stack Development PHP, Laravel, React, Node.js, Python, REST APIs. When off-the-shelf tools are not enough. WHY WORK WITH ME ✔ 10+ years of real project experience across dozens of industries ✔ AI work that runs in production, not just demos ✔ I own the full stack, so nothing falls through the cracks ✔ Clean code you fully own and any developer can maintain ✔ I will tell you honestly if a simpler solution exists ✔ Long-term support available after delivery TECH STACK CMS / eCommerce: WordPress, WooCommerce, Shopify, Elementor Pro AI / Automation: OpenAI API, GPT-4, LangChain, Chatbots Backend: PHP, Laravel, Node.js, Python, Express.js, REST APIs Frontend: React.js, Next.js, JavaScript, Tailwind CSS Databases: MySQL, PostgreSQL, MongoDB DevOps: AWS, Docker, Git, DigitalOcean, Vercel Payments: Stripe, PayPal, Shopify Payments, WooCommerce Payments Send me a message and let's figure out what you need. No commitment required. less
