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$30/hr
82% Job Success
$3K+ earned
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Derrick M. has worked .
Software Architect & Senior Full-Stack Developer I help businesses design robust architectures, develop complex SaaS platforms, and implement advanced Odoo integrations. With over 7 years of experience, I focus on solving your complex business challenges (payment gateways, real-time data flows, secure systems) with clean, maintainable, and scalable code. 🛠️ MY CORE AREAS OF EXPERTISE: Architecture & Backend: Code audits, architecture refactoring, and building high-performance, secure APIs (Node.js, NestJS, Next.js). Odoo Expertise (including Odoo 18): Custom module development, complex widget integrations (interactive maps, tailored workflows), business process automation, and payment gateway integrations (e.g., Xendit). DevOps & Infrastructure: Containerization (Docker), relational database optimization (PostgreSQL, Prisma), and seamless server migrations. 💻 TECH STACK: TypeScript | Python | NestJS | Next.js | React | Odoo | PostgreSQL | Prisma | Docker | Linux I prioritize clear communication, professional reliability (as reflected in my 100% Job Success score and 5-star reviews), and a strictly solution-oriented approach. My goal is to unblock your technical bottlenecks quickly and deliver results that align with your business objectives.
Muhammad A.
$30/hr
98% Job Success
$60K+ earned
Available now
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Muhammad A. has worked .
I help startups, founders, and growing businesses build scalable SaaS platforms, AI-powered applications, and web & mobile apps — from first MVP to scaling an existing platform. Over 10+ years I've shipped production software across SaaS, AI/RAG, Healthcare, SportsTech, Recruiting, Real Estate, and E-commerce. SaaS & Startup MVPs Multi-tenant SaaS, admin dashboards, customer portals, auth & RBAC, Stripe billing, workflow automation, REST/GraphQL APIs. Built: GovDoc AI, Lumn Bio, LetsPadel, ScoreHub, OurWellnessLife, CutsLikeAKnife, BrokerHub, PlayHioGolf, OnTheFelt, Portion Track. AI | LLM | RAG | Agents OpenAI, Claude, Anthropic, AWS Bedrock, LangChain, AI agents, RAG, document processing, OCR, embeddings, vector search, semantic search, recommendation systems, prompt engineering. Built: GovDoc AI, Lumn Bio, Executioner, TypingMind, ChatFaster, TikiTaka, CutsLikeAKnife, ClinicScribe. Healthcare & HIPAA Patient portals, doctor dashboards, biomarker analytics, clinical documentation, secure authentication, audit logs, healthcare reporting. Built: Lumn Bio, ClinicScribe, OurWellnessLife, IntegraHC, My IMC, IMC Women's Health. SportsTech Tournament/club management, live scoring, rankings, scheduling, memberships, booking, sports analytics, AI predictions. Built: OnTheFelt, LetsPadel, ScoreHub, TikiTaka, PlayHioGolf. Recruiting ATS platforms, candidate management, hiring workflows, recruitment automation, interview scheduling, employer dashboards, recruiting analytics. Built: SafetyTalent, Eximius, Recruit. Real Estate Property management, property search, rental workflows, investment dashboards, CRM, lead management, real estate analytics. Built: Doorvest, RentCast, The Trusted Buyer, Elysium Grand Apartments. E-commerce & Marketplaces Marketplaces, Stripe integrations, checkout, subscriptions, product catalogs, inventory/order management, vendor portals, admin dashboards. Built: BrokerHub, Exclusive Customs, Everlane, Ruggable, MVMT. Core Technologies Frontend: React, Next.js, TypeScript, JavaScript, Tailwind CSS, Vite Backend: Node.js, NestJS, Express, Laravel, Fastify, Python, FastAPI Database: PostgreSQL, Supabase, MongoDB, MySQL, MariaDB, Redis AI: OpenAI, Claude, Anthropic, LangChain, AWS Bedrock, RAG, AI Agents, Embeddings Cloud: AWS, Docker, Vercel, Railway, Render, DigitalOcean, CI/CD Integrations: Stripe, Twilio, Mailgun, SendGrid, Resend, Firebase, Google APIs, Webhooks I specialize in turning ideas into launched products. Invite me to your job and I'll walk you through exactly how I'd build it.
Vivek C.
$32/hr
100% Job Success
$200K+ earned
Available now
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Vivek C. has worked .
👑 𝐓𝐨𝐩 𝟏% 𝐄𝐱𝐩𝐞𝐫𝐭-𝐕𝐞𝐭𝐭𝐞𝐝 𝐓𝐚𝐥𝐞𝐧𝐭 | 𝐒𝐞𝐧𝐢𝐨𝐫 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫 | 𝐌𝐄𝐑𝐍, 𝐀𝐈, 𝐍𝐨𝐝𝐞.𝐣𝐬, 𝐏𝐲𝐭𝐡𝐨𝐧 & 𝐅𝐚𝐬𝐭𝐀𝐏𝐈 Whether you're scaling an existing product, building a SaaS platform from scratch, or integrating AI into your workflow, success depends on strong architecture and reliable execution. As a Senior Full Stack AI Engineer with 10+ years of experience, I specialize in building scalable SaaS platforms, enterprise applications, MERN stack solutions, and AI-powered products using React, Next.js, Node.js, Python, and FastAPI. Trusted by enterprise clients including Barnes & Noble, Binance, Restoration Hardware, Liquid Donate, and Rapchat, I deliver high-performance applications, scalable architectures, and reliable product execution. 🛠️ 𝗖𝗢𝗥𝗘 𝗧𝗘𝗖𝗛𝗡𝗢𝗟𝗢𝗚𝗜𝗘𝗦: • Frontend & MERN Stack: React, Next.js, Redux, TypeScript, JavaScript, Tailwind CSS • Backend & APIs: Node.js, Express.js, Python, FastAPI, Django, Flask, REST APIs, GraphQL • Databases: PostgreSQL, MySQL, MongoDB, Redis • Cloud & DevOps: AWS, GCP, Azure, Docker, CI/CD • SaaS & Architecture: Multi-tenant SaaS, Dashboards, Authentication, Workflow Automation • AI Integrations: OpenAI APIs, LLM Workflows, AI Automation, Intelligent Assistants ✅ SaaS Platforms & Enterprise Systems * Multi-tenant SaaS and MERN stack applications * Admin dashboards & workflow systems * Business automation platforms * Secure API-first architectures * Production-scale distributed systems ✅ AI Integrations & Automation * OpenAI / LLM integrations * AI agents & intelligent workflows * Document processing, OCR & data extraction * Automation pipelines & AI-powered features ✅ Healthcare & Secure Data Systems * FHIR-compliant healthcare platforms * HIPAA-aware workflow implementation * Secure healthcare interoperability, ingestion & data mapping --- ### Industry Experience 🧩 Delivered SaaS platforms, admin dashboards, and API-first systems 🌐 Built enterprise-grade applications across eCommerce, FinTech, EdTech, Web3, and Enterprise IT 🏥 Built secure healthcare platforms with FHIR and HIPAA-compliant workflows 🛫 Aviation & operations management platforms 🎯 Applicant Tracking System (ATS) integrations 🧩 Marketplace & product configuration systems --- ### What Clients Say “Vivek provides a solution-oriented approach, proactively identifies problems, and delivers effective solutions.” “Vivek delivered exceptional performance in a highly complex enterprise environment.” Clients usually work with me when they need strong technical leadership, architecture guidance, and end-to-end product ownership - from planning to deployment. If you're looking for a senior engineer who can quickly understand complex systems, architect scalable solutions, and deliver production-ready software, feel free to message or invite me to discuss your project. Full-Stack Development | AI Development | MERN Stack | React | Next.js | TypeScript | Node.js | Express.js | Python | FastAPI | Django | SaaS Development | SaaS Architecture | Software Architecture | System Design | API Integration | OpenAI API | Generative AI | LLM Integration | LangChain | AI Automation | AI Agent Development | RAG | Vector Database | PostgreSQL | MongoDB | AWS | Docker | Microservices | Healthcare Software | FHIR | HIPAA
Abdul wahab T.
$15/hr
100% Job Success
$5K+ earned
Available now
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Abdul wahab T. has worked .
I build production-ready SaaS web apps using React/Next.js, Node.js, and Python (Django/Flask). Expect clean UI, secure APIs, and fast delivery for MVPs, dashboards, and integrations. If you’re a founder or team shipping a product, I help you move fast without breaking things: stable architecture, predictable delivery, and thoughtful implementation that supports real growth. 𝐖𝐡𝐚𝐭 𝐈 𝐛𝐮𝐢𝐥𝐝 (𝐚𝐧𝐝 𝐢𝐦𝐩𝐫𝐨𝐯𝐞) • SaaS platforms: multi-role dashboards, admin panels, onboarding, internal tools • Full-stack web apps: React/Next.js frontends + Node/Python backends • APIs & integrations: REST/GraphQL, third-party APIs, webhooks, automation • Auth + roles/permissions: secure access control for teams and customers • Realtime features (when needed): Supabase realtime, notifications, activity feeds • Performance & cleanup: refactors, bug fixing, speed improvements, best practices 𝐌𝐲 𝐜𝐨𝐫𝐞 𝐬𝐭𝐚𝐜𝐤 Frontend: React, Next.js, JavaScript/TypeScript, Tailwind Backend: Node.js (Express/Nest) + Python (Django / FastAPI / Flask) Databases: PostgreSQL, MySQL, MongoDB, Cosmos DB, BigQuery, Supabase (auth + db + realtime) Deploy & Cloud: GCP, Vercel, Heroku, Hostinger, CI/CD with GitHub Actions 𝐇𝐨𝐰 𝐈 𝐰𝐨𝐫𝐤 • Quick audit + clear plan (priorities, risks, timeline) • Small, testable releases (so progress is always visible) • Clean handoff (readable code, structure, brief implementation notes) 𝐖𝐡𝐚𝐭 𝐲𝐨𝐮 𝐜𝐚𝐧 𝐞𝐱𝐩𝐞𝐜𝐭 • Clear communication and ownership • Practical decisions (no over-engineering) • Production mindset: security, stability, and performance If you share your goals + existing repo (or requirements), I’ll reply with a clear approach and the fastest path to shipping.
Hasan J.
$35/hr
90% Job Success
$200K+ earned
Available now
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Hasan J. has worked .
I build production Algo-trading systems, from market data ingestion to live execution; for funds, prop desks, and serious retail traders. 9+ years in software engineering, the last several spent almost exclusively on trading infrastructure: IBKR/MT5/FIX execution, tick-level data pipelines, and causal ML for signal generation. I run my own live trading platform, so I'm not learning on your dime — I ship what I already operate. What I Build: ⤷ End-to-end algo trading systems (data → signal → execution → risk) ⤷ Broker/exchange integrations: IBKR API, MT4/MT5 (MQL5 EAs), Binance, Bybit, Polymarket ⤷ Low-latency execution infrastructure (Dockerized IB Gateway, multi-instance live trading, C# ↔ MQL5 bridges) ⤷ Causal inference for markets: PCMCI+, VarLiNGAM, DYNOTEARS, Granger/Transfer Entropy — used to filter spurious signals before they hit a backtest ⤷ ML signal models: LightGBM, XGBoost, LSTM/TCN, meta-labeling over causal-discovery gates ⤷ Backtesting & research stacks: NautilusTrader, Backtrader, Zipline, QuantConnect, Qlib ⤷ Market microstructure work: LOB/MBP-10 data, Hawkes processes, Hayashi-Yoshida covariance, price discovery (Hasbrouck/Gonzalo-Granger) ⤷ Options pricing & Greeks (Black-76, BSM, second-order Greeks) for hedging and 0DTE workflows ⤷ Financial data engineering: Databento, TimescaleDB, Parquet/Arrow pipelines Core Stack: ✓ Backend: Python (FastAPI, Django), C#/.NET, Rust, C++ ✓ Data: TimescaleDB, PostgreSQL, Redis/Valkey, Parquet, Apache Arrow/PyArrow ✓ Cloud/Infra: AWS (ECS, Lambda, RDS), Docker, Terraform, Packer, GitHub Actions CI/CD ✓ Trading: IBKR API, MetaTrader 5/MQL5, TradingView, Databento (GLBX.MDP3/MBP-10) ✓ ML/Causal: PCMCI+, CMIknn, LightGBM, XGBoost, scikit-learn, statsmodels Why Clients Choose Me: ✓ I operate a live trading platform myself — I understand uptime, restart cycles, and the failure modes that only show up in production ✓ Rigorous methodology: I don't just backtest, I stress-test causal assumptions before trusting a signal ✓ Clean, documented handover — you're not locked into me ✓ Clear async communication with regular progress updates Recent Results: - Rebuilt an IBKR Gateway deployment to eliminate recurring 12-hour restart cycles caused by GDI handle leaks - Designed a causal-discovery pipeline (PCMCI+/CMIknn) identifying dominant cross-asset drivers in equity stress regimes - Architected a C# Worker Service + MQL5 EA bridge for automated MT5 execution - Live trading volume: $80M+ across managed strategies (2025) - Built AWS Savings Plan / Reserved Instance cost model cutting infra spend without sacrificing uptime SLAs Send me your requirements and I'll respond within 2-6 hours with a concrete plan — not a template pitch.
Yurij M.
$35/hr
100% Job Success
$400K+ earned
Available now
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Yurij M. has worked .
🔥 Your reliable tech partner. 💸 I value your time and budget. ❤️ Client-focused. 🎯 I say less, deliver more. ABOUT ME 8+ years and 60+ products as a Full Stack Developer React Node in SaaS Platform, MVP, AI-Powered and Web Application delivery. $3.8M+ client impact, $900K+ direct revenue volume as a React Developer. 20,000+ active users across Web + Mobile Apps where Frontend React Developer execution with n8n supabase lifted engagement by 18–27%. 10,000+ users in Healthcare Web Application and HIPAA-Compliant systems where Frontend React Developer (flutterflow, v0, aws) ownership cut admin friction by 40%. 2,423 completed orders, 489 registered customers in Ecommerce Website and CRM Platform MVP as a Full Stack Developer React Node. 90% faster order processing, 80% lower manager workload through Workflow Automation, Document Workflow, and Frontend React Developer improvements. 1,666+ catalog items, 4-role access, 2.7x operational capacity in B2B Marketplace and Registration and CRM System as a Full Stack Developer React Node. 5–8 weeks shorter MVP to Pilot Launch, 35% fewer bugs through Existing Codebase and Productionise work as a Full Stack Developer React Node $900K+ in client revenue as react next js developer, and 8 years as web app developer react / react app developer $3.8M+ client impact, end-to-end ownership as Full Stack Developer React Node.18–27% engagement lift, clarity and trust as Frontend React Developer 30–40% faster cycles, cleaner UX, stronger retention across SaaS Platform products as React Developer WHERE I DELIVER As a Frontend React Developer - 20+ systems with UI Development, UI/UX, Dashboard Build, Responsive UI Build across SaaS Platform, Booking Platform, Ecommerce Website. As a React Developer - 15+ launches in full stack developer nextjs environments, 30–40% faster iteration through Design-to-Code and Component Development. As a Full Stack Developer React Node - 25+ end-to-end builds with Backend API, Backend System Development, Data Architecture, Secure, Scalable architecture from Early-Stage MVP to Live SaaS Platform. As a frontend developer react, front end developer react, react native expo - web design, UI Polish ( ux designer ), front end development improving conversion by 15–22%. 10+ deployed mobile app in app and google play store as react native developer expo, react native app developer. 12–19% better repeat usage through booking, notifications, payments as front-end developer flutter and mobile app developer. As react frontend developer angular, python developer, python full stack developer django - 12+ backend-heavy products, 28% lower delivery risk ( nodejs ). As a Full Stack Developer React Node - 6–18 month cycles through Scale Existing Platform, Professionalize & Scale, Review, Improve & Launch as a Long-Term Development Partner. As a full stack react developer and full stack developer supabase react - 99%+ delivery consistency across distributed teams ( react developers ethiopia ). INDUSTRY IMPACT Marketplace Platform, B2B Marketplace, Two-Sided Marketplace, B2B Services - 50,000+ active listings, 20%+ better lead quality, and a 35% increase in conversion rates as a Frontend React Developer and Full Stack Developer React Node handling $2M+ in monthly transaction volume. Healthcare Web Application, Clinic Management SaaS, Telehealth, HIPAA-Compliant - 10,000+ active users, 500+ daily appointments processed, 25%+ better staff capacity, and 15% fewer patient no-shows as a Frontend React Developer maintaining 99.9% system uptime. AI-Powered - 5+ products deployed, Custom AI Solutions, AI Agent Platform, AI Chatbot, RAG Chatbot, OpenAI, Claude API, FastAPI as a React Developer and Full Stack Developer React Node, processing 15,000+ daily prompts and reducing manual query resolution time by 40%. Logistics Platform, ERP, Internal Workflow Management System, Owner Dashboard - up to 12 hours saved per order cycle, 30%+ faster reporting, and a 40% reduction in data entry errors across 5+ regional hubs as a Full Stack Developer React Node. Research Platform, LegalTech SaaS, Fintech MVP, PropTech MVP - 18% better adoption, 40% higher user retention over 6 months, and structured permissions managing 3 distinct access levels for 5,000+ users through Frontend React Developer HOW I BUILD 50+ products as a Frontend React Developer: java react, react.js, react native mobile, react next tailwind frontend, javascript, typescript, html, html5, css3, Tailwind CSS, React Bootstrap frontend, Responsive Design, jQuery. 25+ SaaS as a Full Stack Developer React Node: supabase postgres, laravel, MySQL, MongoDB, firebase, stripe. Integrations across payment, maps, auth, and third-party APIs. 10+ projects: wordpress developer, shopify, web3 frontend, php, .net, flask, vue.js, svelte, webflow, mern stack as a react js developer and react web developer. 40+ products: git, Software Development, Software Architecture & Design, Front-End Development with engineer mindset.
Soft Bee
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Christian E.
$64/hr
100% Job Success
Available now
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Christian E. has worked .
Need a senior architect who designs business-focused solutions and handles backend AI pipelines, RAG, or complex ETL at scale? Whether Python, Node.js, Go, or many others, I've shipped production systems for 16+ years, including: HIPAA-compliant platforms, identity infrastructure, and LLM-powered APIs on AWS. What sets me apart: behind my backend specialization, speed, quality, and cost stay balanced because you see every trade-off and make the call with me. I don't just wire up an API. I architect the data flow, own the cloud infrastructure, and handle complex auth (OAuth2, OIDC, SAML),so you don't need to manage different contractors. With Top Rated Plus status and $150K+ earned across 7 active contracts, my clients keep coming back for two simple reasons: I communicate clearly, and I ship on time. 🐍 Python backends — FastAPI, Flask, Django, async workers, parallelism ⚡ Node.js / TypeScript APIs — Express.js, Nest.js, REST, GraphQL, Supabase integrations 🐹 Golang services — high-performance APIs, concurrency, microservices 🤖 AI & RAG pipelines — LLM orchestration, vector search, embedding workflows 📊 ETL & data engineering — GCP BigQuery, PostgreSQL, MongoDB, Kafka, RabbitMQ, SQS ☁️ Cloud & DevOps — AWS (Lambda, EC2, S3, Step Functions), GCP, Docker, Kubernetes, Helm 🔐 Identity & Auth — OAuth2, OIDC, SAML, OpenID Connect 🌐 Full-stack when needed — React.js, Next.js, Redux, Vue.js ✅ Top Rated Plus on Upwork — top 3% of talent ✅ 16+ years of software development experience ✅ Led HIPAA-compliant mental health platform as sole technical owner (Node.js + AWS) ✅ Redesigned inbound identity module of Gluu, open-source IAM platform (SAML → OpenID Connect proxy) ✅ Certified: Programming with Google Go (UC Irvine) | Cloud Native Dev with Node.js, Docker & Kubernetes ✅ Acted as Product Lead and CTO — I understand business context, not just code Send me a message with what you're trying to build or fix — a single sentence is enough to start. I'll tell you how I'd approach it and the trade-offs to expect, so you can evaluate the fit before we scope anything. Detailed spec or just a rough idea, send it over.
Ravi  T.
$25/hr
100% Job Success
$6K+ earned
Available now
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Ravi T. has worked .
𝐀𝐈 & 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐬𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐳𝐢𝐧𝐠 𝐢𝐧 𝐀𝐈 𝐀𝐠𝐞𝐧𝐭𝐬, 𝐑𝐀𝐆, 𝐕𝐨𝐢𝐜𝐞 𝐀𝐈, 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧, 𝐚𝐧𝐝 𝐀𝐈-𝐩𝐨𝐰𝐞𝐫𝐞𝐝 𝐒𝐚𝐚𝐒. I build production-ready AI applications and intelligent software systems that combine modern AI with powerful web technologies. From AI agents and RAG chatbots to voice AI, automation platforms, and complete SaaS products, I can take your idea from architecture to production. My core stack includes 𝐑𝐞𝐚𝐜𝐭, 𝐍𝐞𝐱𝐭.𝐣𝐬, 𝐍𝐨𝐝𝐞.𝐣𝐬, 𝐏𝐲𝐭𝐡𝐨𝐧, 𝐅𝐚𝐬𝐭𝐀𝐏𝐈, 𝐚𝐧𝐝 𝐃𝐣𝐚𝐧𝐠𝐨, combined with modern AI technologies including 𝐎𝐩𝐞𝐧𝐀𝐈, 𝐀𝐧𝐭𝐡𝐫𝐨𝐩𝐢𝐜/𝐂𝐥𝐚𝐮𝐝𝐞, 𝐂𝐥𝐚𝐮𝐝𝐞 𝐂𝐨𝐝𝐞, 𝐆𝐨𝐨𝐠𝐥𝐞 𝐆𝐞𝐦𝐢𝐧𝐢, 𝐋𝐚𝐧𝐠𝐂𝐡𝐚𝐢𝐧, 𝐋𝐚𝐧𝐠𝐆𝐫𝐚𝐩𝐡, 𝐑𝐀𝐆, 𝐋𝐋𝐌 𝐀𝐏𝐈𝐬, 𝐀𝐈 𝐚𝐠𝐞𝐧𝐭𝐬, 𝐚𝐧𝐝 𝐯𝐨𝐢𝐜𝐞 𝐀𝐈. 🧠 𝐀𝐈 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠: • AI Agents & Agentic AI • Multi-Agent Systems • AI Chatbots & Conversational AI • AI Voice Agents & Voice AI • RAG (Retrieval-Augmented Generation) • AI Automation & Intelligent Workflows • LangChain & LangGraph • Tool Calling & Function Calling • Knowledge Bases & Document Q&A • AI Search & Retrieval Systems • LLM Integration & AI APIs • AI-powered SaaS Applications ⚙️ 𝐀𝐈 𝐓𝐨𝐨𝐥𝐬 & 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬: • 𝐎𝐩𝐞𝐧𝐀𝐈 — GPT models, APIs, embeddings, function calling and AI applications • 𝐀𝐧𝐭𝐡𝐫𝐨𝐩𝐢𝐜 — Claude models, APIs and agentic workflows • 𝐂𝐥𝐚𝐮𝐝𝐞 𝐂𝐨𝐝𝐞 — AI-assisted software engineering and agentic coding workflows • 𝐆𝐨𝐨𝐠𝐥𝐞 𝐆𝐞𝐦𝐢𝐧𝐢 — LLM and multimodal AI integrations • 𝐋𝐚𝐧𝐠𝐂𝐡𝐚𝐢𝐧 — LLM applications, retrieval, tools and agents • 𝐋𝐚𝐧𝐠𝐆𝐫𝐚𝐩𝐡 — stateful agent and multi-agent workflows • 𝐑𝐀𝐆 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 — embeddings, vector search, retrieval and knowledge pipelines • 𝐕𝐨𝐢𝐜𝐞 𝐀𝐈 — conversational voice agents and AI calling workflows • 𝐀𝐈 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 — connecting AI with APIs, business tools and operational workflows 👨🏾‍💻 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: • React.js & Next.js • Node.js • Python • FastAPI & Django • REST APIs & Backend Development • PostgreSQL & Database Architecture • SaaS Applications & Web Platforms • Authentication & Authorization • Third-Party API Integrations • Dashboards & Admin Panels ،🚀 𝐖𝐡𝐚𝐭 𝐈 𝐁𝐮𝐢𝐥𝐝: ✅ AI Customer Support Agents ✅ AI Sales & Lead Generation Agents ✅ AI Voice Agents & Calling Systems ✅ RAG & Knowledge-Base Chatbots ✅ AI Document Processing Systems ✅ AI Automation Platforms ✅ AI SaaS Products ✅ Internal AI Assistants ✅ Multi-Agent AI Systems ✅ Custom AI Features for Existing Products ✅ React / Next.js Web Applications ✅ Python / FastAPI / Django Backends ✅ MVPs and Production-Ready Applications 𝐂𝐨𝐫𝐞 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬: React, Next.js, Node.js, Python, FastAPI, Django, OpenAI, Anthropic, Claude, Claude Code, Gemini, AI Agents, Agentic AI, RAG, LangChain, LangGraph, LLM APIs, Voice AI, AI Automation, PostgreSQL, REST APIs. 👤👤 𝐖𝐡𝐲 𝐜𝐥𝐢𝐞𝐧𝐭𝐬 𝐰𝐨𝐫𝐤 𝐰𝐢𝐭𝐡 𝐦𝐞: My advantage is that I can build 𝐛𝐨𝐭𝐡 𝐭𝐡𝐞 𝐀𝐈 𝐚𝐧𝐝 𝐭𝐡𝐞 𝐩𝐫𝐨𝐝𝐮𝐜𝐭 𝐚𝐫𝐨𝐮𝐧𝐝 𝐢𝐭. Instead of having one developer build your AI agent, another handle the backend, and another build the frontend, I can develop the 𝐜𝐨𝐦𝐩𝐥𝐞𝐭𝐞 𝐬𝐲𝐬𝐭𝐞𝐦 𝐚𝐬 𝐨𝐧𝐞 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐞𝐝 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧. That includes: 𝐀𝐈 𝐚𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞 → 𝐚𝐠𝐞𝐧𝐭 𝐰𝐨𝐫𝐤𝐟𝐥𝐨𝐰𝐬 → 𝐑𝐀𝐆 → 𝐛𝐚𝐜𝐤𝐞𝐧𝐝 → 𝐀𝐏𝐈𝐬 → 𝐝𝐚𝐭𝐚𝐛𝐚𝐬𝐞 → 𝐟𝐫𝐨𝐧𝐭𝐞𝐧𝐝 → 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 → 𝐚𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 → 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧 I focus on building AI software that is 𝐫𝐞𝐥𝐢𝐚𝐛𝐥𝐞, 𝐦𝐚𝐢𝐧𝐭𝐚𝐢𝐧𝐚𝐛𝐥𝐞, 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞, 𝐚𝐧𝐝 𝐜𝐨𝐧𝐧𝐞𝐜𝐭𝐞𝐝 𝐭𝐨 𝐫𝐞𝐚𝐥 𝐛𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐰𝐨𝐫𝐤𝐟𝐥𝐨𝐰𝐬, not simply connecting an LLM to a chatbot interface. Whether you need an 𝐀𝐈 𝐚𝐠𝐞𝐧𝐭, 𝐜𝐡𝐚𝐭𝐛𝐨𝐭, 𝐯𝐨𝐢𝐜𝐞 𝐀𝐈 𝐬𝐲𝐬𝐭𝐞𝐦, 𝐑𝐀𝐆 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧, 𝐚𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 𝐰𝐨𝐫𝐤𝐟𝐥𝐨𝐰, 𝐀𝐈 𝐒𝐚𝐚𝐒 𝐩𝐫𝐨𝐝𝐮𝐜𝐭, 𝐨𝐫 𝐚 𝐜𝐨𝐦𝐩𝐥𝐞𝐭𝐞 𝐟𝐮𝐥𝐥-𝐬𝐭𝐚𝐜𝐤 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧, I can help you design and build it from the ground up. 📩 𝐘𝐨𝐮 𝐜𝐚𝐧 𝐢𝐧𝐯𝐢𝐭𝐞 𝐦𝐞 𝐭𝐨 𝐲𝐨𝐮𝐫 𝐣𝐨𝐛 with your requirements, and I’ll help turn your AI idea into a reliable, production-ready product. 𝐀𝐈 𝐀𝐠𝐞𝐧𝐭, 𝐑𝐀𝐆, 𝐕𝐨𝐢𝐜𝐞 𝐀𝐈, 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧, 𝐨𝐫 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐩𝐫𝐨𝐣𝐞𝐜𝐭? 𝐈𝐧𝐯𝐢𝐭𝐞 𝐦𝐞.
Hamza N.
$25/hr
100% Job Success
$20K+ earned
Offers consultations
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Hamza N. has worked .
I am a Full-Stack Developer with a strong track record on Upwork delivering 20+ successful web and mobile applications using MERN, MEAN, LAMP and Golang. My work includes building scalable e-commerce platforms, social networking apps, real-time chat systems, and data-driven dashboards. Alongside my full-stack expertise, I also help businesses integrate Python and AI solutions into their products, from building intelligent APIs to automating workflows with machine learning. Combined with extensive AWS and Azure experience and DevOps skills (Docker, Kubernetes, CI/CD, GitHub Actions), I deliver projects that are technically robust, cloud-ready, and future-proof. Full-Stack & Backend Development: • MERN & MEAN Stacks (MongoDB, Express.js, React/Angular, Node.js) • Golang (high-performance APIs and microservices) • LAMP Stack (Linux, Apache, MySQL, PHP) • REST & GraphQL API design • Scalable and secure backend architectures • Cloud Deployment & DevOps: AWS, Azure, Docker, Kubernetes, CI/CD pipelines, GitHub Actions Python & AI Solutions: • Python Frameworks: FastAPI, Django, Flask • Machine Learning & NLP (TensorFlow, PyTorch, Hugging Face) • Retrieval-Augmented Generation (RAG) for search & chatbots • Data Pipelines & Automation (Pandas, SQL, ETL, Airflow) • AI API Integration (OpenAI, custom ML APIs) Mobile App Development: • React Native • Flutter Why Clients Hire Me: ✅ Proven Full-Stack Delivery – 20+ Upwork projects completed with strong feedback in MERN, MEAN, and LAMP. ✅ Cloud & DevOps Expertise – AWS & Azure deployments with Docker, Kubernetes, CI/CD, and GitHub Actions. ✅ AI as a Value-Add – Python/AI integration to make applications smarter and more scalable. ✅ End-to-End Expertise – From full-stack web systems to mobile apps and intelligent backends. ✅ Scalable Engineering – Performance optimization and cloud-ready deployments with Node.js, Golang, and Python. ✅ Clear Communication – Agile workflows, transparent updates, and reliable delivery. Whether you need a robust full-stack application, cloud deployment or AI capabilities added to your product, I can bridge both worlds, combining proven development experience with cloud and AI expertise.
Serhiy L.
$35/hr
100% Job Success
Available now
Offers consultations
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Serhiy L. has worked .
Welcome to my profile! 🔥 I help startups and global businesses (Pfizer, Deutsche Bank, ING, Upwork, KLM, Ford) build, scale, and support AI SaaS products faster, acting as a lead full stack developer and mobile app developer so you don't need to assemble a full team just to get moving. If your project needs a highly interactive frontend built by a specialist react developer, or use Vue and Angular, a scalable .NET or Golang architecture, a custom CMS handled by a senior wordpress developer, or a dedicated Back End Developer building secure Rust and Solana microservices, I cover it as your full stack developer and software developer, so you get one point of ownership instead of five disconnected specialists. My deep expertise in JavaScript, PHP, and AI integrations, combined with an understanding of SaaS sales and SaaS marketing, means the SaaS applications I build are engineered to actually convert and scale, not just function. ⭐ Certified full stack developer, React developer, software developer, & SaaS developer Top Rated+ 🏆100% full stack developer Success for every SaaS contract utilizing React, Vue, Angular, Node.js, Python, Golang, Rust ⭐ 5-star Rating for web, mobile app developer projects, AI, Web3 Solana, and SaaS 💰 $300K+ earned delivering excellence as an elite full stack developer, web developer, software developer, and wordpress developer. Whatever stage your product is at, I bring extensive full stack developer and software developer expertise across Web, Mobile, and SaaS platforms to get you there, seamlessly integrating AI models and Web3 components (including Solana smart contracts) into robust web systems built for your business. Whether architecting a new SaaS platform in .NET, optimizing core financial engines in Rust or golang, deploying a custom theme as a wordpress developer, boosting technical infrastructure for FinTech, MarTech, PropT SaaS products, or scripting in Python for complex data processing. My full stack developer and SaaS developer approach covers every Web, Mobile, AI, Data, Web3 projects domains. My skills as a full stack developer, React developer, software developer, SaaS developer, web developer, mobile app developer, and Back End Developer: ✅React (lead react developer, MERN stack) ✅Vue ✅Angular ✅Node.js ✅Python ✅Golang ✅.NET (Web APIs, legacy migrations) ✅Rust (memory-safe modules, solana ecosystems) ✅PHP (stable databases) ✅JavaScript (core & advanced ecosystems) ✅WordPress / Custom CMS ✅AI Adoption & Integrations ✅Web3 / Solana smart contracts ✅iOS/Android (mobile app developer) ✅Agile & Scrum/Kanban delivery Stack of technologies I use as your full stack developer: ✅ Frontend: React, Vue, Angular ✅ Backend & APIs: Node.js, .NET Web APIs, Golang, PHP ✅ Data & scripting: Python (complex data processing) ✅ Blockchain: Rust-based Solana microservices, Web3 smart contracts ✅ CMS: bespoke WordPress builds and custom themes ✅ AI: model integrations for smart SaaS features ✅ Mobile: iOS/Android builds as mobile app developer By combining core JavaScript, advanced React/Vue/Angular ecosystems, scalable Node.js and Golang microservices, stable PHP databases, and smart AI features, I deliver exactly what you need from a top-tier full stack developer, cross-platform mobile app developer, software developer, and Back End Developer. Industries where I bring solid full stack developer, software developer, and SaaS developer experience: ✅AI Development, AI Agents, AI Integration, Web3, Blockchain ✅Data Engineering (Cloud, AI, ML, Vector, SQL, NoSQL) ✅Finance (FinTech SaaS, data analytics via Python, Golang, Rust) ✅PropTech (SaaS, CRM, Rich UIs via JavaScript, Vue, Angular, React) ✅HRTech/EdTech (SaaS solutions) ✅Travel/Hospitality (SaaS platforms) ✅eCommerce (web portals via .NET, PHP) As a dedicated lead React full stack engineer, react engineer, Node.js Architect, Back End Developer, and strategic SaaS developer, I blend AI performance, Golang APIs, and Rust (including Solana blockchains) into your traditional SaaS workflows — as your full stack developer, web developer, and mobile app developer, all in one. 🔥 Backed by certification as a Full Stack developer Engineering and Solution Architect Expert (Ph.D. CS, PMP, CSP, CSM, CSPO, ICP-PPM, MCP), I deliver Agile/Scrum SaaS solutions as a lead full stack developer, dedicated react developer, software developer, and saas developer focused on turning your web, AI, React, Vue, angular, Rust,Solana, Golang, and .NET goals into a shipped product. 🔥 Managing cross-functional teams as a full stack developer, I ensure strict coding best practices across dynamic React, Vue, and angular UIs, iOS/Android builds guided by a senior mobile app developer, Node.js, Golang, and PHP backends, Web3 Solana integrations, legacy .NET migrations, bespoke CMS builds managed by a wordpress developer, and sophisticated Python integrations designed to maximize your Saas sales and Saas marketing ROI. *Updated: 14.08.2026
Genius Software
Associated with
Genius Software