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Serhii P.
$28/hr
100% Job Success
$30K+ earned
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👋 Need a Front end Developer React who can take ownership of your product and deliver polished, production-ready experiences? I'm a Top Rated Front end Developer React with 15+ years of commercial experience building SaaS platforms, dashboards, customer portals, and modern web applications. With $200K+ earned, 5,300+ hours worked, 31 successful projects delivered, and a 100% Job Success Score, I focus on creating scalable solutions that combine excellent user experience with maintainable architecture. As a React Full Stack Developer, I've helped clients across 15+ countries transform ideas into successful products and scalable platforms. I've contributed to applications ranging from startup MVPs to enterprise solutions serving more than 5 million end-users worldwide. I've built 30+ mobile applications used by millions, SaaS products, and streaming platforms delivering real-time video and audio experiences across multiple markets. As a React Full Stack Developer and Full Stack Developer React Node.js, I contribute across the product lifecycle—from frontend architecture and user experience to backend integrations and feature delivery. Having delivered 30+ projects, my experience as a Full Stack Developer React Node.js allows me to support complex business requirements while building reliable systems designed for growth. 🏆 Why Clients Work With Me Top Rated with 100% Job Success 15+ years of commercial development experience $200K+ earned on Upwork 5,300+ hours worked 31 successful projects delivered Products serving 5M+ end-users Clients across 15+ countries Product ownership Scalable solutions Reliable delivery As a React Full Stack Developer, I focus on delivering practical solutions that balance technical excellence with real business objectives. 🚀 Services 📌 Front End Development As a Front end Developer React Node.js, I build responsive, high-performance applications using React, Next.js, TypeScript, and modern frontend practices. Dashboards & Admin Panels Customer Portals Internal Tools Responsive Web Applications Reusable UI Systems Frontend Architecture & Refactoring 📌 Full Stack Product Development As a React Full Stack Developer and Full Stack Developer React Node.js, I work with growing teams to build SaaS products, MVPs, and business applications. SaaS Platforms MVP Development Feature Development Product Modernization Technical Discovery End-to-End Implementation 📌 Backend Integrations As a Full Stack Developer React and Full Stack Developer React Node.js, I integrate backend services supporting business workflows. REST API GraphQL Authentication & Authorization Payment Integrations Third-Party Services 📌 Product Growth As a Full Stack Developer React, I support products beyond launch through performance improvements, architecture enhancements, and ongoing development. 🔧 Technologies React • Next.js • TypeScript • JavaScript • Node.js • Redux • Tailwind CSS • REST API • Supabase • Firebase • PostgreSQL • Docker • Stripe • AWS Throughout my career, I've delivered 31 successful projects for startups and established businesses across 15+ countries. The products I've contributed to now serve more than 5 million users worldwide, helping companies launch faster and scale with confidence. As a React Full Stack Developer and Full Stack Developer React Node.js, I build applications using clean architecture, reusable code patterns, and development practices designed to support long-term business growth. 💼 Selected Experience 🏥 Healthcare Platform Worked on healthcare applications focused on improving operational workflows and user experience. As a Front end Developer React, I developed responsive interfaces, integrated APIs, optimized user journeys, and delivered features supporting medical staff and end users. 🚚 Cargo & Logistics Platform As a React Full Stack Developer and Full Stack Developer React Node.js, I built dashboards, shipment management interfaces, workflow solutions, and integrations supporting logistics operations. 👥 Recruitment & Hiring Platform I developed candidate management more than 150 dashboards, search and filtering systems, workflow features, and integrations supporting recruitment. 📌 Additional Expertise As a Front end Developer React, I collaborate with founders, product managers, and stakeholders to transform business requirements into intuitive user experiences and scalable technical solutions. I have experience working with existing codebases as well as building products from the ground up. My background as a Full Stack Developer React Node.js includes implementing secure authentication flows, integrating payment systems, optimizing application performance, and supporting products through multiple stages of growth. 📌 Industries Healthcare • Logistics • Recruitment • Booking Platforms • E-commerce As a Full Stack Developer React Node.js, I enjoy partnering with ambitious teams building products designed to scale. let's connect.
vymir42
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vymir42
$1K+
earned
$25/hr
100% Job Success
$200K+ earned
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Jignesh: Your Digital Alchemist | Top Rated on Upwork👑 Greetings, visionaries and innovators! I'm Jignesh, your full-stack sorcerer with over a decade of experience in weaving digital marvels. As a Top Rated Plus wizard on Upwork, I've helped countless businesses transmute their online presence into pure gold. 🌟 My Magical Toolkit: • Full-stack sorcery (Web & Mobile realms) • iOS enchantments (Swift, Objective-C) & Android spells (Java, Kotlin) • Web incantations: PHP, Node.js, React.js, Vue.js, Laravel • Cross-platform conjuring: React Native • IoT & Bluetooth Low Energy (BLE) alchemy • UI/UX illusions that captivate users • E-commerce potions that boost conversions • Shopify, WooCommerce and WordPress-certified sorcery for e-commerce mastery 🏆 Legendary Feats: • Conjured an e-commerce elixir generating $200K monthly revenue • Crafted an MVP crystal ball that attracted $500K in mystical investments • Reinvented a B2B portal, multiplying revenues by 5x 🔍 My Divination Process: 1. Vision Quest: Delving deep into your business essence 2. Strategic Scrying: Collaboratively mapping your digital destiny 3. Agile Incantations: Keeping you enchanted with regular updates 4. Quality Alchemy: Rigorous testing to ensure pure digital gold 5. Launch & Beyond: 3 moons of free support to keep your digital realm thriving. 🎭 Industries I've Enchanted: E-commerce Bazaars | Healthcare Sanctuaries | Educational Academies | Financial Vaults | Real Estate Kingdoms | Travel Odysseys | Hospitality Havens | Automotive Chariots | Fashion Runways | Media Amphitheaters | Tech Laboratories | Non-Profit Quests | Retail Emporiums | Legal Chambers | Wellness Oases | Manufacturing Forges | Insurance Shields | Professional Services Guilds | Artistic Ateliers | Home Improvement Workshops | Beauty Parlors | Event Planning Extravaganzas | Telecom Networks | Agricultural Fields | Energy Sources | Logistical Caravans | Publishing Houses | Gaming Arenas 💼 Why Summon Me? • Design-driven development for user experiences that bewitch • Crystal-clear communication throughout our quest • Holistic approach that considers your entire business cosmos • Unwavering commitment to exceeding the boundaries of excellence 🤝 Let's Embark on a Digital Odyssey: I'm not just a code weaver; I'm your ally in the digital realm. Whether you're a startup with a world-changing vision or an established empire seeking to innovate, I'm here to amplify your digital resonance. Are you ready to transform your digital presence into a legendary tale? Let's connect and breathe life into your unique vision. In this ever-evolving digital landscape, your triumph is the epic I'm eager to help write! 🌠 Special Enchantment: Seek my counsel to double your website's allure, captivate investors with your mobile app concept, or receive free wisdom on elevating your ideas to cosmic heights! P.S.: I make sure to provide daily updates to my clients.
Muneeb U.
$30/hr
100% Job Success
Available now
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Your business growth is just one decision away - the right AI and Data systems to make it 10x. My clients have experienced real, measurable growth: - 10x faster operations with custom AI & data automation. - 3x more inbound leads using GPT-powered chatbots. - 60% reduction in manual workload via intelligent RAG systems. - SaaS MVPs launched in weeks, generating revenue from day one. - Agentic workflows replacing entire teams of repetitive tasks. - Data pipelines built to scale as the business grows. These aren't made-up numbers and 𝘐 𝘤𝘢𝘯 𝘪𝘯𝘵𝘳𝘰𝘥𝘶𝘤𝘦 𝘠𝘖𝘜 𝘵𝘰 𝘵𝘩𝘦 𝘣𝘶𝘴𝘪𝘯𝘦𝘴𝘴𝘦𝘴 𝘣𝘦𝘩𝘪𝘯𝘥 𝘵𝘩𝘦𝘮. Most businesses sit on goldmines of data and never use it. I change that. And that's exactly what I build. I'm a Generative AI & Data Engineer, 5+ years, 50+ systems built. I work with SMEs, startups, and scaling businesses that are serious about using AI as a real growth engine. My weapon of choice: OpenAI, LangChain, LlamaIndex, FastAPI, and cloud-native data infrastructure crafting AI and data systems that are razor-sharp, strategically driven, and built to grow your business. 𝗪𝗵𝗮𝘁 𝗜 𝘀𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘇𝗲 𝗶𝗻: → Generative AI & LLM Integration (GPT-4, Claude, Gemini, Mistral) → RAG Systems (retrieval-augmented pipelines with custom knowledge bases) → GPT Chatbots & Conversational AI (sales, support, internal tools) → Agentic AI & Multi-Agent Workflows (LangGraph, AutoGen, CrewAI) → SaaS MVP Development (AI-first products, fast to market) → Data Engineering (ETL pipelines, warehouses, Spark, Airflow, dbt) → AI-Powered API & Backend Architecture 𝗜'𝗺 𝗻𝗼𝘁 𝘁𝗵𝗲 𝗿𝗶𝗴𝗵𝘁 𝗳𝗶𝘁 𝗶𝗳: → You want a quick ChatGPT wrapper with no real strategy behind it. → You already have a fixed solution in mind and just need blind execution. → You're not open to feedback, iterations, or the engineering process. → Budget is the only deciding factor for you. Still not sure? Let my work speak - → Every project in my portfolio is a real client, real brief, real result. → No concept work. No mockup fillers. No fake case studies. If you want proof before you commit, just ask. I'll walk you through the story behind any project you see.
Pratik K.
$15/hr
100% Job Success
$70K+ earned
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Principal Mobile & Web Architect | 14+ Years' Expertise in High-Performance Apps | AI-Enhanced Development For over a decade, I have architected and engineered robust, scalable, and user-centric mobile and web applications for a global clientele. As a seasoned full-stack developer, I possess a rare and valuable perspective, understanding the entire digital ecosystem from native iOS and Android development to complex backend infrastructure. My passion is transforming ambitious ideas into reality. I don't just write code; I build comprehensive digital solutions that solve real-world problems, drive user engagement, and deliver measurable business results. To stay at the forefront of innovation, I now leverage cutting-edge AI development tools to enhance efficiency, ensure code quality, and accelerate time-to-market, giving my clients a significant competitive advantage. If you are looking for a technical lead who can own a project from concept to launch and beyond, you've found your expert. Core Competencies & Technical Proficiencies 🚀 AI-Powered Development: • Utilizing modern AI-driven platforms (e.g., Rork, Loveable) to streamline workflows, automate testing, and produce high-quality, maintainable code. 📱 Mobile Application Development (iOS & Android): • Native iOS: Swift, Objective-C • Native Android: Kotlin, Java • Cross-Platform: React Native, Flutter • Wearable Tech: watchOS, Wear OS 💻 Web & Backend Engineering: • Frontend: React.js, Vue.js • Backend: Node.js, PHP • Databases: Firebase, SQLite, PostgreSQL, MongoDB, Supabase • Cloud: AWS (EC2, S3), Azure, Google Cloud, Heroku, Hetzner • APIs: RESTful Web Services, Microservices Architecture 🛠️ Tools & Project Management: • Version Control: Git, Bitbucket, SVN • Project Management: Jira, Trello, Asana, Zoho • CI/CD & Distribution: TestFlight, Diawi, WeTransfer Specialized Expertise & Project Highlights I have a proven track record of successfully delivering complex, large-scale applications across a variety of demanding sectors. • AI-Powered Solutions: Integrating machine learning models and AI services to create intelligent, data-driven applications. • Augmented Reality (AR): Building immersive and interactive AR experiences. • Live Media Streaming: Developing high-availability, low-latency streaming platforms. • E-Commerce: Creating secure, high-volume online retail applications with integrated payment gateways (Stripe). • Health & Fitness: Engineering apps for tracking, monitoring, and promoting wellness. • Geolocation Services: Expertise in location-aware applications, mapping, and real-time tracking. • Real-Time Communication: Building instant messaging apps, social platforms, and event-based systems with robust push notification services. • Custom SDKs & Frameworks: Designing and developing reusable software development kits. • Video & Photo Processing: Advanced experience with FFMPEG for creating video from images and music, and developing photo filtering applications. I am actively seeking challenging, large-scale projects where I can apply my extensive experience and leadership skills to build something truly exceptional. Let's connect to discuss how I can bring your vision to life. #MobileAppDevelopment #iOSDevelopment #AndroidDevelopment #ReactNative #FlutterDevelopment #SwiftDeveloper #KotlinDeveloper #FullStackDeveloper #MobileArchitect #TechnicalLead #AIDevelopment #ARDevelopment #CrossPlatformDevelopment #NodeJS #Firebase #AWSExpert #APIIntegration #EcommerceDevelopment #MVPDevelopment #ScalableApps
Svitlana H.
$70/hr
100% Job Success
$40K+ earned
Available now
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When you work with me, you keep full ownership of everything. As a full stack developer I own the entire stack — PostgreSQL design, Node.js and Nest.js backend, React and Next.js frontend, REST API integrations, Stripe payments, and Vercel deployment. Need a full stack developer, SaaS developer, or dashboard developer who owns the technical side end to end? Let's talk. I am a full stack developer, SaaS developer, and dashboard developer in the UK — Top Rated Plus on Upwork, top 3% globally. I build systems that run businesses — working platforms with real users, real transactions, and business impact. My recent full stack developer work includes a SaaS platform for trades businesses — a Next.js app with job management, client records, quoting, and role-based access — and a B2B admin dashboard on PostgreSQL, Node.js, and React that a team of 20 depends on every day. SaaS developer. Multi-tenant. Production-ready. As a SaaS developer I delivered a multi-tenant SaaS starter on Next.js with Stripe subscriptions, PostgreSQL via Neon, role-based access, billing portal, and team invites — fully documented, repo transferred on handover. I led a platform rebuild from legacy PHP and WordPress to a modern Next.js and Nest.js architecture — 40% lift in user engagement post-launch. I also build multilingual B2B platforms — Next.js with Sanity CMS, localised content and routing, editorial workflows non-technical teams actually use. Backend developer. Nest.js. PostgreSQL. Data pipelines. As a backend developer I build production Nest.js and Node.js APIs on PostgreSQL with TypeScript end to end. Recent backend work: a Nest.js and PostgreSQL backend for a raffle SaaS platform — JWT authentication, OAuth providers, password recovery, and a clean REST API layer for a Next.js and React frontend. I also engineered a web scraping and data aggregation engine: Nest.js cron pipelines with adapters for multiple third-party sites, anomaly detection, stale-data cleanup, and webhook alerting — thousands of records refreshed daily on Railway, Prisma, and Neon. Every endpoint authenticated, every role enforced, every query isolation-aware. Security audit. Supabase RLS. Multi-tenant isolation. As a technical consultant I run pre-launch security audits for SaaS founders — the review that must happen before real customer data goes live. My audits cover Supabase Row Level Security (RLS), multi-tenant isolation, PostgreSQL policy design, authentication flows, and exposed API keys in client code. I've audited a multi-tenant property maintenance SaaS on Supabase, and on another platform found RLS policies that lived only in discarded migrations, never applied to the database — the silent data leak an audit catches before a breach. If you're a SaaS founder on Supabase, Next.js, or PostgreSQL and aren't certain your tenant data is isolated, that's the audit I do. Dashboard developer. AI features. Data that changes decisions. As a dashboard developer with a KendoReact commercial licence I build enterprise-grade interfaces standard React developers can't replicate — advanced data grids, real-time charts, complex forms under load. My portfolio includes a marketing analytics dashboard with AI insights that cut campaign review time by 60% for a British agency, and a SaaS analytics dashboard with Chart.js and PDF export that replaced weekly manual reporting. I integrate LLM APIs (Anthropic Claude, OpenAI) into production apps — AI insights, content pipelines, and matching features, keys secured server-side. Integrations. Authentication. Infrastructure. OAuth integration and API authentication — credential flows for Google, GitHub, and custom providers using NextAuth, Nest.js, and JWT. Google Tag Manager with GA4 and Meta Pixel across complex Next.js apps, GDPR cookie consent and Consent Mode included. Transactional email on Resend and Brevo, plus Next.js blog and CMS setup with Sanity Studio. Stripe. Payments. Automation. I built a Stripe internal payment interface with role-based access on Next.js — PaymentIntent flow, full audit log, zero card data stored. I delivered Stripe subscription billing with webhooks handling upgrades, downgrades, and failed payment recovery. I wire Stripe with Make, GoHighLevel, and Google Sheets so every transaction triggers the right email, CRM tag, and notification. Technical consultant. Architecture. Audit. For non-technical founders my tech stack and architecture audit with written report shows what you have, what's broken, and what to build next — vendor selection, developer estimate review, security review, and a roadmap. As a Next.js performance specialist I improve Lighthouse and Core Web Vitals — measurable gains for users and search ranking. Next.js · React · Node.js · Nest.js · PostgreSQL · Supabase · TypeScript · JavaScript · REST API · Stripe · Kendo UI · Sanity · Prisma · Claude API · OpenAI · Make · GoHighLevel · Vercel · Railway · NextAuth · JWT · OAuth · RLS · Chart.js · GA4 · Meta Pixel
Muhammad A.
$25/hr
100% Job Success
$40K+ earned
Offers consultations
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I lead Chakor, a product development agency that helps founders turn ideas into scalable digital products. Since 2014, we’ve partnered with startups, scaleups, and enterprises to bring products to market faster while balancing speed, cost and quality. We go beyond development, helping founders validate ideas, design intuitive user experiences and architect scalable systems before building. This ensures products are not just functional but ready for long-term growth and market traction. We specialize in low-code, no-code and AI-assisted development leveraging tools like: Bubble – SaaS platforms, marketplaces, dashboards, AI apps, custom plugins FlutterFlow – Cross-platform mobile apps Webflow – High-performance websites and CMS-driven builds Chakor has delivered 150+ digital products across industries like fintech, healthcare, education, e-commerce, logistics and media. We're also one of the largest Bubble contributors with 370+ published plugins. We have access to premium support and early features, allowing us to solve complex challenges efficiently. We also build secure, compliant applications (GDPR, HIPAA, WCAG) with enterprise-level access and data protection. If you're looking to build an app, I would love to talk. The goal is simple: ensure you walk away from the first conversation not only with a plan to build your app, but with insights from someone deeply involved in the startup ecosystem and product development space. Keywords: Bubble Developer | Bubble Agency | Bubble Gold Agency | Bubble SaaS Development | Bubble Marketplace | No-Code SaaS | FlutterFlow Mobile App | Webflow Developer | MVP Development | AI App Development
Chakor
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Chakor
$18/hr
100% Job Success
$300K+ earned
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🏆 Top Rated ✔ Full-Stack Developer ✔ Excellent communication 🏆 ⭐[ Well versed with following Technologies ]: ✔ .NET (10, 8, 7, 6) Framework| .NET MVC |.NET Core | Entity Framework | Azure | SQL | Blazor | MAUI | Dapper | Microservices | APi Integration, GraphQL | RestAPI | Javascript | Jquery | Angular | Vue | React | HTML | CSS ✔ I am a Full-stack developer and experienced with frontend & backend both. Solid hands-on Web Application Development, Software Development, Website Development, API Integration, etc. I have worked in all phases of project development such as Business requirement Analysis, Architecture Design, Database Design, Development, Testing, Debugging, Optimization, Deployment, Maintenance ✔ [ I have worked on many domains. A few major domains are listed below]: - Event Management - Flight Scheduling - Supply Chain Management - Health Care - Fintech - Point of Sale - eCommerce Solutions - CRM - Compliance Management - Inventory Management - Marketplace - B2B and B2C trading platform - Mobile Marketing - Dashboard/ Reporting & Analysis - Business Application - Workflow Application
Systematix Infotech- "One-stop Solution Provider"
Associated with
Systematix Infotech- "One-stop Solution Provider"
$5M+
earned
Serhii U.
$60/hr
100% Job Success
$10K+ earned
Offers consultations
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🚀 AI Solutions for Scalable Impact — LLMs, RAG, LangChain, and Full-Stack Development 👋 Hi, I’m Serhii - representing Springs, a Canada, Portugal & Ukraine-based AI & ML development agency with 15+ years of experience delivering enterprise-grade AI systems that turn complex ideas into scalable, secure products. We combine Generative AI, Large Language Models (LLMs), Retrieval-Augmented Generation (RAG), and custom software engineering to help businesses innovate faster and smarter. Services: 🧠 AI/ML Solutions — GPT-4, LLaMA, Mistral, Claude, Gemini 🔍 Discovery & Technical Consultancy 💻 Web & Mobile Development with AI integration ⚙️ DevOps & Cloud Scaling 🔒 Security-First Development & QA 🛠 Ongoing Support & Maintenance 🏢 Industries: Artificial Intelligence | Computer Vision | FinTech | Education | Logistics & Transportation | Retail | Real Estate | Sales & Marketing 🛠 Tech Stack: Python (Django, FastAPI, Pandas), PyTorch, TensorFlow, Keras, LangChain, Pinecone, ChromaDB, Vector Databases, OpenAI API, GPT-4o, n8n, MERN/MEAN, React, Vue, Angular, AWS, Docker, Kubernetes, PostgreSQL, MongoDB 💡 Why Springs? 🔷 Transparent partnerships — honesty first 📋 Deep Discovery Phase to ensure clarity 🛡 Standardized security best practices ✅ Proven enterprise delivery track record
Springs
Associated with
Springs
$4M+
earned
Alex V.
$75/hr
100% Job Success
$5K+ earned
Available now
Offers consultations
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I've shipped production systems that serve 20M+ users, generated $1.5M ARR, and helped a startup raise $7.4M — all using the same AI-augmented engineering approach that makes my team 3–5x faster than traditional agencies. I work with funded startups and growing companies that need senior technical leadership and fast execution — not just a developer for hire. ───────────────────────────── WHAT I ACTUALLY DELIVER ───────────────────────────── AI Systems in Production Custom AI agents, MCP integrations, RAG pipelines, multi-agent orchestration. Not demos — live systems handling real workloads. Built with Claude, LangGraph, FastAPI, Python. Example: MCA underwriting engine that replaced manual analyst review for a financial company. CTO-as-a-Service Architecture review, tech roadmap, team assessment, technical debt audit. You get a clear PDF report and a prioritized action plan — not a slide deck. Packages from $250 (Express Audit) to $1,000 (CTO Day embedded with your team). Engineering Acceleration for Series A/B Your team is too small, hiring takes 6 months, investors are pushing. We bridge the gap: embedded AI-native team, weekly demos, fixed-scope milestones. You stay in control, we execute fast. Vibe Coding Rescue AI-generated codebase that doesn't hold up in production? I audit it, find the structural issues, and fix them. Saved multiple clients from expensive rewrites by catching architecture problems early. ───────────────────────────── PROOF — WHAT WE'VE SHIPPED ───────────────────────────── Stats.fm — 20M+ users worldwide. Flutter, multi-platform. I was Flutter Lead Developer. Production-stable across 6 build configurations. IRNBY Training Club — $1.5M ARR, 73k users, 207k orders. I was CTO for 3 years. Zero major outages. 5–8 person team delivering like 15–20. Rhino — Premium taxi app in São Paulo. Our Flutter MVP went from idea to investment pitch. Result: $7.4M raised. DevForge — AI orchestration platform. 6 agents working as a team. 26,000 lines of code. Built solo in 7 weeks with Claude Code. MCA underwriting AI. On-premise Ollama. Bank statement analysis. HFT Trading System — AI-powered decision engine for high-frequency trading. 50ms model inference latency. C++ core with custom inference pipeline. Built for sub-millisecond trading environments where model latency is a competitive edge. AnimaFest — Idea to production in 1 day. Not a prototype — a live SaaS platform with real users. ───────────────────────────── HOW I WORK ───────────────────────────── Fixed-price milestones. You know what you're getting, when, and what it costs. No hourly surprises. Every engagement starts with a scoped Discovery Sprint or Tech Audit — so we both understand the problem before committing to a solution. My team is small and senior. No juniors padding hours. No account managers adding overhead. ───────────────────────────── If you're building something that needs to work at scale, or you've inherited a codebase that's becoming a liability — message me. I'll give you a straight answer on what's actually needed.
Alex V. has worked .
MDDT
Associated with
MDDT
$4K+
earned
Mubashir R.
$30/hr
100% Job Success
Available now
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I build production AI systems for US startups and SMBs that hold up under real load: multi agent pipelines, RAG systems, and LLM powered platforms with paying users. Not demos that break the first time a real prompt hits them. Most clients come to me after a previous developer shipped something that hallucinated in production, fell over under traffic, or could not be maintained. I focus on the engineering side of AI: clean architecture, proper error handling, evaluation pipelines, and systems that survive edge cases and weird user input. Recent work: - AI call analysis pipeline processing 150K+ calls per day - Multi agent trading system running live on Binance with real capital - LangGraph multi agent pipelines with sandboxed code execution and automated evaluation - RAG systems for accuracy critical use cases with hybrid search and re ranking - Voice AI for appointment setting and lead qualification What I build: - Multi agent systems with LangGraph and LangChain: orchestration, state management, tool calling, human in the loop - RAG pipelines with Pinecone, ChromaDB, PGVector, or FAISS, including hybrid search and re ranking - n8n and Make automations wired into LLMs, CRMs, and internal APIs, with retry logic and proper error handling - Python backends with FastAPI and PostgreSQL powering AI driven SaaS - Voice AI using VAPI and Bland AI for inbound calls and qualification Stack: Python, FastAPI, PostgreSQL, LangGraph, LangChain, n8n, Make, OpenAI, Claude, Gemini, Pinecone, ChromaDB, PGVector, FAISS, Supabase. How I work: I scope before I build, write code the next engineer can actually read, and document what I deliver. I respond within a few hours during US business hours and ship in tight iterations instead of disappearing for two weeks. If you are building an AI agent, RAG system, or LLM powered platform and want it done properly the first time, send me a message with what you are working on and I will tell you honestly whether I am the right fit.