🔹 Stop hiring developers. Hire someone who understands your product. I help startups and SaaS companies build scalable backend systems, automation workflows, and data-driven platforms, the kind that don’t break after launch. If your product involves APIs, dashboards, large datasets, integrations, or AI features, I’ve probably built it before. What I Build Most Often • SaaS platforms (multi-tenant architecture) • Backend APIs (FastAPI, Django, Node.js/Express) • Integrations (OAuth, webhooks, third-party services, CRMs) • Automation & background workers • Analytics dashboards & admin panels (React / Next.js) • Data processing pipelines • Cloud deployments on AWS Why Clients Hire Me Many projects fail after MVP because the backend wasn’t designed for growth. I design for: 1. clean architecture 2. predictable scaling 3. maintainability 4. faster future features So you don’t need to rebuild in 6 months. Recent Work ✔ Built medical platform MVP (Node.js + React), production ready ✔ Designed military social platform infrastructure (Flask + AWS + Docker) ✔ Created organization-wide email compliance & analysis system (OAuth integrations) ✔ Built IoT monitoring platform with real-time device data ingestion ✔ Developed automation workflows & analytics dashboards Tech Stack 1. Backend Python (FastAPI, Django, Flask) Node.js (Express, NestJS) REST APIs, Webhooks, OAuth 2. Frontend React, Next.js, Vue Tailwind, Material UI 3. Data & Infrastructure PostgreSQL, Redis, MongoDB AWS, Docker, CI/CD Large dataset processing & reporting If you need someone who can own both the architecture and implementation, message me before hiring multiple developers.

I build AI chatbots and AI assistants that answer from your real business data with accuracy, speed, and reliability. I help businesses create custom AI chatbots, AI assistants, and RAG-powered knowledge systems that deliver accurate, context-aware answers using real company data such as PDFs, SOPs, help centers, websites, CRMs, ticketing systems, and SQL databases. My focus is not just on making a chatbot respond. I build solutions designed for accuracy, reliability, scalability, and real business use. This includes the full implementation process: architecture planning, retrieval setup, data source integration, prompt optimization, hallucination reduction, performance monitoring, and ongoing improvement after launch. ✅ AI Chatbot & AI Assistant Solutions I Can Build: ● Customer support chatbots for websites, apps, and WhatsApp ● Internal company assistants for HR, SOPs, and employee helpdesks ● Document chatbots for PDFs, manuals, contracts, and policies ● Knowledge base and FAQ automation ● Email and ticket summarization assistants ● Database-aware chatbots that answer from structured data ● AI assistants connected to APIs, CRMs, and internal tools ✅ Core Expertise: ● RAG architecture ● LangChain and LlamaIndex ● OpenAI API integration ● Embeddings and vector search ● Pinecone, Weaviate, FAISS, and Chroma ● Hybrid search and re-ranking ● Prompt engineering and context optimization ● Hallucination reduction ● RAG evaluation and monitoring ● LangSmith, Langfuse, and performance tracking I design chatbot systems for accurate retrieval, relevant answers, and stable production performance. This includes optimizing chunking, context selection, retrieval quality, and output evaluation to improve accuracy and control costs over time. Clear communication and regular progress updates are always a priority. I build practical, maintainable AI solutions aligned with real business goals.

Need a Python backend that scales, integrates AI, and just works? I build production-grade systems — from REST APIs and WebSocket services to LLM-powered features and AWS infrastructure. What I deliver: → Python backends with clean architecture (Django, FastAPI — 6+ years) → AI/LLM integration: OpenAI, Claude, RAG pipelines, real-time analysis → AWS infrastructure: ECS, S3, CloudFront, RDS, Terraform → Billing systems: Stripe, Apple IAP → Real-time features: WebSockets, Celery async processing Recent work: Built Typeza (typeza.ai) — an AI-powered SaaS platform with real-time audio transcription, parallel AI model calls across 15 trait dimensions, and full Stripe + Apple IAP billing. Previously: Backend developer at DIZZBO (logistics SaaS, Berlin) and full-stack at Lingvist (AI language learning, 2M+ users). 15 Upwork projects, 100% Job Success Score. I communicate clearly, deliver on time, and write code that future developers will thank you for. Let's discuss your project.

I am an experienced Python Developer with 8+ years in backend development, specializing in REST API design, cloud solutions, and database optimization. My expertise includes Python frameworks like Django, Flask, and FastAPI, along with AWS services (EC2, Lambda, Glue, S3, Redshift). I have a strong background in data engineering, building scalable ETL pipelines, and integrating cloud-based systems. Skilled in PostgreSQL, MySQL, MongoDB, and Big Data technologies like Spark and Hive, I deliver high-performance, secure, and reliable solutions. I focus on delivering measurable results through collaboration and strong problem-solving capabilities.

𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫 | 𝐀𝐈 𝐅𝐢𝐫𝐬𝐭 𝐒𝐚𝐚𝐒 𝐁𝐮𝐢𝐥𝐝𝐞𝐫 | 𝟖+ 𝐘𝐞𝐚𝐫𝐬 | 5𝟎+ 𝐏𝐫𝐨𝐝𝐮𝐜𝐭𝐬 𝐒𝐡𝐢𝐩𝐩𝐞𝐝 𝐖𝐡𝐚𝐭 𝐦𝐚𝐤𝐞𝐬 𝐦𝐞 𝐝𝐢𝐟𝐟𝐞𝐫𝐞𝐧𝐭: I am AI enabled at the workflow level. I use advanced tools like GPT, Claude, Qwen, Kimi and Cursor to accelerate development, testing, documentation and automation. 𝐈 𝐡𝐞𝐥𝐩 𝐟𝐨𝐮𝐧𝐝𝐞𝐫𝐬 𝐭𝐮𝐫𝐧 𝐢𝐝𝐞𝐚𝐬 𝐢𝐧𝐭𝐨 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧 𝐫𝐞𝐚𝐝𝐲 𝐒𝐚𝐚𝐒 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐬 𝐟𝐚𝐬𝐭. I build AI powered MVPs and scalable platforms using Python (Django, FastAPI) and React (Next.js). By combining clean architecture with AI assisted development workflows, I reduce build time by up to 40 percent without sacrificing quality. If you are building: • AI SaaS • Internal tools with automation • Custom CRM or dashboards • FinTech or subscription platforms • AI agents or LLM powered products I can help you ship faster and smarter. 𝐓𝐡𝐚𝐭 𝐦𝐞𝐚𝐧𝐬: • Faster iteration cycles • Cleaner architecture from day one • Rapid prototyping • Better code coverage and refactoring • Shorter time to MVP 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤: 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 - React.js, Next.js, TypeScript, Tailwind, Redux, Framer Motion 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 - Python (Django, FastAPI, Flask), Node.js, Go 𝐀𝐈 & 𝐋𝐋𝐌 - OpenAI API, LangChain, Pinecone, Vector Databases, RAG systems, AI Agents, Custom Chatbots 𝐂𝐥𝐨𝐮𝐝 & 𝐃𝐞𝐯𝐎𝐩𝐬 - AWS (EC2, S3, Lambda), Docker, CI CD, DigitalOcean 𝐌𝐨𝐛𝐢𝐥𝐞 - React Native, Expo 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞: -Top Rated Plus, Top 3% on Upwork -6000+ hours completed -Full time freelancer, US business hours -Clear communication and realistic timelines -Long term collaboration mindset If you have an idea and need a technical partner who understands AI, architecture, and product thinking, send me a message. 𝐋𝐞𝐭’𝐬 𝐛𝐮𝐢𝐥𝐝 𝐬𝐨𝐦𝐞𝐭𝐡𝐢𝐧𝐠 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞.

I am a prolific Full-Stack Developer specialized in Python Django with 14+ years of hands-on experience in designing, developing, and implementing applications and solutions using a range of technologies and programming languages. I am a responsible developer confident in my code and also among the Top 10 Certified Python/Django Developer as per Upwork Test. CORE COMPETENCIES: =================== Back-end Technologies: •Python •Django •Flask Front-end Technologies •Angular •React Search and Analytics: •ElasticSearch Async Communication Platform: •Socket.io Event Streaming Platform: •Apache Kafka Web Crawling Technologies: •Scrapy Test Automation Technologies •Selenium Workflow: •Airflow Cloud Data Platform: •Databricks Databse Technologies: •Postgresql •MySQL •MongoDB Cloud Computing Services: •AWS •GCP •Heroku JS Libraries •D3.js •amCharts •HighCharts •Jqchar •NVD3 •Google-Chart Payment Gateways •Citrus •Stripe Web Servers: •Nginx •Gunicorn •Superisord •Apache Version Control System •Git KEY PROJECTS: ============= •Price -------- AI-powered money savings app for advanced comparison shopping. •Moveeasy --------------- Platform that allows custmers a personalized moving experience. •Healthywage ----------------- For-profit health and wellness company website that provides weight loss and fitness challenges with cash prizes .•Verifiny ----------- Highly secure system that replaces paper-based processes designed for the New York DMV. •FoPark ---------- Next-generation parking solution that provides real-time occupany information for parking decks and surface lots. I consider myself as the right choice for you because I have the potentiality to merge usability and user experience with technical knowledge to create a wonderful digital experience. I expect that your fine judgment will be able to pick me up from the rest.

🚀 I help tech startups and growing businesses build custom Full Stack solutions - from custom SaaS platforms and enterprise apps (CRM/ERP/HRM) to AI-powered tools and automation pipelines that deliver real business results. I’m Oleksandr, CEO at Dinamicka Development – a leading Full Stack development agency. From MVPs to enterprise platforms, we provide end-to-end Full Stack development services, combining deep engineering expertise with modern AI-driven coding approaches to build products faster, more cost-effectively, and in alignment with your business goals. With 10+ years in software development and system architecture, my team has delivered 200+ projects across SaaS, logistics, real estate, fintech, edtech, and e-commerce – now enhanced with AI-driven engineering. 📈 𝗞𝗘𝗬 𝗠𝗘𝗧𝗥𝗜𝗖𝗦 & 𝗘𝗫𝗣𝗘𝗥𝗜𝗘𝗡𝗖𝗘 ✅ 10+ years in full stack software development ✅ 200+ projects delivered worldwide ✅ Proven success with SaaS startups and enterprise apps (CRM/ERP/Analytics Dashboards) ✅ 100% satisfaction rate across industries ✅ 85% clients retain long-term partnerships 🤖 𝗔𝗜-𝗗𝗥𝗜𝗩𝗘𝗡 𝗗𝗘𝗩𝗘𝗟𝗢𝗣𝗠𝗘𝗡𝗧 – 𝗪𝗛𝗔𝗧 𝗪𝗘 𝗕𝗨𝗜𝗟𝗗 🚩 AI Agents & Autonomous Workflows (LangChain, LangGraph, CrewAI, MCP) 🚩 Custom AI Chatbots for SaaS & enterprise platforms (OpenAI GPT, Claude/Anthropic) 🚩 RAG Systems — private knowledge bases with vector DBs (Pinecone, Milvus, Weaviate) 🚩 AI Automation Pipelines (n8n, Make) with API & Webhook orchestration 🚩 AI-powered document processing & structured data extraction 🚩 Third-party AI integrations into CRM, ERP, and internal tools 🚩 AI-accelerated Full Stack development — faster delivery, same quality 🛠 𝗙𝗨𝗟𝗟 𝗦𝗧𝗔𝗖𝗞 – 𝗪𝗛𝗔𝗧 𝗪𝗘 𝗕𝗨𝗜𝗟𝗗 🚩 Enterprise Web Apps, SaaS, CRM, Dashboards, ERP, HRM, DMS 🚩 Mobile & Web Apps, Admin Panels & Analytics Dashboards 🚩 E-commerce Solutions, Marketplaces, Websites & Landing Pages 🚩 Data Visualization, Analytics & Reporting 🚩 IoT solutions, Chrome Extensions, Figma Plugins With us, you don't just hire a developer – you get a solution – clear project management, fast UI/UX design, expert frontend & backend engineering (React, Node.js & Python), AI-driven testing, DevOps services, and marketing support. We follow Agile (Scrum & Kanban), so you'll always have full visibility and a product that grows with your business. ⚙️𝗜𝗡𝗗𝗨𝗦𝗧𝗥𝗜𝗘𝗦 𝗪𝗘 𝗦𝗘𝗥𝗩𝗘 ✅ Logistics & Supply Chain ✅ Automotive & Fleet Management ✅ Healthcare & Sports ✅ Real Estate & PropTech ✅ Fintech & Banking ✅ E-commerce & Retail ✅ Big Data & AI-Driven Platforms ✅ Food Delivery & Restaurant Tech ✅ Education & EdTech ✅ IoT & Smart Solutions ✅ SaaS & B2B Platforms 🖥 𝗧𝗘𝗖𝗛𝗡𝗢𝗟𝗢𝗚𝗬 𝗦𝗧𝗔𝗖𝗞 ➕ AI & Agents: OpenAI (GPT-4o/GPT-5), Anthropic Claude, LangChain, LangGraph, CrewAI, MCP ➕ RAG & Data: RAG Pipelines, Pinecone, Milvus, Weaviate, Structured Data Extraction ➕ Automation: n8n, Make, Zapier, Vapi, Retell AI, ElevenLabs, Voiceflow, Twilio ➕ Front-end: React, Next.js, Vue.js, Nuxt.js, Angular, TypeScript, WebGL, Three.js ➕ Back-end: Node.js, Nest.js, Python, FastAPI, Django, Flask, PHP, Laravel, .NET, GraphQL ➕ Databases & Cloud: PostgreSQL, MongoDB, MySQL, AWS, Azure, Google Cloud, Supabase ➕ Mobile: React Native, Flutter ➕ CRM & Ecosystems: HubSpot, Salesforce, GoHighLevel, Pipedream, Custom Webhooks ➕ E-commerce & CMS: WordPress, WooCommerce, Shopify, Strapi, BuilderIO ➕ DevOps & Security: CI/CD, Docker, GitHub Actions, QA, penetration testing 🤝 𝗪𝗛𝗬 𝗖𝗟𝗜𝗘𝗡𝗧𝗦 𝗖𝗛𝗢𝗢𝗦𝗘 𝗨𝗦 Whether you need a classic Full Stack team or a developer who uses AI tools to ship faster and smarter, we adapt to your workflow. ✔ AI-accelerated development: faster delivery, better quality, lower cost ✔ Clear communication, structured requirements, no "black box" ✔ On-time delivery with Agile sprints and full transparency ✔ End-to-end: from architecture and UI/UX to deployment and scaling 📩 𝙇𝙚𝙩'𝙨 𝘽𝙪𝙞𝙡𝙙 𝙎𝙤𝙢𝙚𝙩𝙝𝙞𝙣𝙜 𝙂𝙧𝙚𝙖𝙩 𝙏𝙤𝙜𝙚𝙩𝙝𝙚𝙧! Whether you're launching a SaaS product, integrating AI agents into your platform, automating operations with n8n, or scaling an enterprise app — message me and let's map out your technical roadmap.

I build production-grade AI systems powered by LLMs, RAG pipelines, autonomous agents, and scalable backend infrastructure. I have over 8 years of engineering experience, I specialize in designing and deploying AI applications that combine strong architecture, reliable retrieval systems, intelligent workflows, and production-ready backend engineering. My work spans healthcare, legal tech, real estate, automation platforms, voice AI, CRM systems, and SaaS products where performance, scalability, and maintainability matter as much as the AI itself. I work across the full lifecycle of AI product development from system architecture and retrieval pipeline design to model integration, backend infrastructure, deployment, optimization, and long-term scalability. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 𝐂𝐎𝐑𝐄 𝐄𝐗𝐏𝐄𝐑𝐓𝐈𝐒𝐄 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✔ Retrieval-Augmented Generation (RAG): end-to-end pipeline design using LangChain, LlamaIndex, vector databases (Pinecone, ChromaDB, FAISS, Weaviate), hybrid semantic search, and reranking for high-accuracy document retrieval ✔ LLM Application Development: OpenAI API (GPT-4o, GPT-4 Turbo), Claude API, Gemini, structured outputs, function calling, streaming responses, token optimization, and prompt engineering ✔ Autonomous AI Agents: multi-agent architectures using LangGraph, CrewAI, and AutoGen; tool-calling agents, memory management, and human-in-the-loop workflows ✔ Production Python Backends: FastAPI microservices with async processing, JWT authentication, rate limiting, Redis caching, and full AWS deployment (EC2, Lambda, S3, RDS) ✔ Machine Learning Pipelines: NLP, document classification, predictive analytics, and deep learning using PyTorch, TensorFlow, Hugging Face, and scikit-learn ✔ Voice AI & Multimodal Systems: voice-enabled conversational agents, Whisper-based transcription, ElevenLabs integration, and real-time audio processing ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 𝐏𝐑𝐎𝐃𝐔𝐂𝐓𝐈𝐎𝐍 𝐖𝐎𝐑𝐊 𝐓𝐇𝐀𝐓 𝐈 𝐇𝐀𝐕𝐄 𝐁𝐔𝐈𝐋𝐓 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✔ TripTalk (triptalk.app): Architected and deployed a full-stack RAG-powered travel assistant featuring voice interaction, contextual memory, personalized itinerary generation, and structured LLM outputs. Live in production. ✔ EEG Machine Learning Platform: Delivered a multi-model ML proof-of-concept on EEG neuroscience data, building and benchmarking several classifiers in parallel. Long-term engagement: 810+ hours, $36,000+, 5-star review. ✔ Legal RAG Chatbot: Engineered a high-accuracy legal document search assistant using OpenAI embeddings, vector database retrieval, and reranking. Dramatically reduced manual legal research time for law firm clients. ✔ Real Estate CRM AI: Integrated a natural language property query engine directly into an existing CRM platform, enabling agents to search listings and client records conversationally in real time using FastAPI and LLM function calling. ✔ AI Medical Chatbot: Built a domain-specific Q&A assistant for healthcare providers using structured knowledge retrieval, guardrails for medical safety, and OpenAI API integration. ✔ Futures Trading Backtesting Engine: Developed a PyTorch/TensorFlow-powered backtesting platform for algorithmic trading strategies. Multi-year engagement with 5-star client feedback. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 𝐓𝐄𝐂𝐇𝐍𝐈𝐂𝐀𝐋 𝐒𝐓𝐀𝐂𝐊 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Languages Python, Node.js, Laravel/ PHP, TypeScript, SQL AI / LLMs OpenAI API, Claude API, Gemini, LangChain, LlamaIndex, LangGraph RAG & Search Pinecone, ChromaDB, FAISS, Weaviate, pgvector, hybrid search, reranking Agents CrewAI, AutoGen, LangGraph, MCP (Model Context Protocol) ML Frameworks PyTorch, TensorFlow, Hugging Face, scikit-learn, spaCy, NLTK Backend FastAPI, Django, Flask, Redis, BullMQ, PostgreSQL, MongoDB Cloud & DevOps AWS (EC2, Lambda, S3, RDS, SageMaker), Docker, GitHub Actions Voice / Audio Whisper, ElevenLabs, Deepgram, real-time audio pipelines ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ I focus on building AI systems that are scalable, maintainable, cost-efficient, and ready for real production usage. Whether you are developing an AI SaaS platform, intelligent document assistant, automation system, AI-powered CRM, or custom LLM application, I can help architect and build the underlying infrastructure required to take it from concept to deployment.

I build scalable web applications and dashboards using React, Node.js, and Python. I help startups and businesses turn ideas into production-ready systems with clean architecture, secure APIs, and long-term maintainability. I’m a Full-Stack Developer specializing in building reliable, scalable web applications for startups and growing businesses. I work across the full development lifecycle — from planning and architecture to development, deployment, and optimization. My focus is on clean code, performance, and systems that are easy to scale and maintain. What I help clients with: • Full-stack web applications (React, Next.js, Node.js, Python) • Backend development & REST API design • Admin dashboards & data-driven systems • SaaS platforms & MVP development • CMS-based websites with custom functionality • Performance optimization & system refactoring Tech Stack: Frontend: React, Next.js, JavaScript, HTML, CSS Backend: Node.js, Python, PHP (Laravel) Databases: MySQL, MongoDB APIs: REST, third-party integrations CMS: WordPress, custom CMS solutions How I work: • Clear communication & realistic timelines • Clean, documented, production-ready code • Business-focused solutions, not just features If you’re looking for a developer who can understand your requirements, suggest the right technical approach, and build something solid — let’s discuss your project.

I build backend systems that perform under pressure — APIs, data pipelines, and AI-powered workflows for product teams that can't afford slow or unreliable infrastructure. With 7 years of backend experience, I've delivered results that show up in the numbers: cut task execution time by 40% through async optimization, boosted notification delivery effectiveness by 50% via MS Graph API integration, and led ETL pipelines processing over 1 million records daily with high accuracy. Earlier in my career I researched and shipped production deep learning models — giving me an AI foundation that now extends into modern GenAI and agentic systems. Here's what I bring to your project: → REST API development with FastAPI and Django REST Framework → ETL pipelines and data warehouse integrations → GenAI and agentic workflow integration (LLMs, Twilio, Lindy AI, Perplexity AI) → AWS infrastructure — Lambda, S3, API Gateway, serverless architecture → PostgreSQL optimization and async task queues with Celery → Third-party integrations: MS Graph, Twilio, and more What makes me different: I have production experience with agentic AI systems — not just connecting an API, but building fault-tolerant, scalable workflows with real-time monitoring and logging. That's still rare on Upwork. I respond within a few hours and prefer a quick discovery call before writing any code, to make sure I fully understand your goals. Let's talk about what you're building.