Oleksandr V.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Apr 7, 2026.

With over 7 years of experience in Full Stack Development and Generative AI, I specialize in creating powerful, scalable solutions that enhance business processes. From AI Agents and Chatbots to Generative AI and NLP systems, I develop intelligent applications that drive innovation, boost productivity, and solve complex problems. My expertise spans AI development, data engineering, and cloud architecture, with a deep focus on AI-driven applications, intelligent automation, and full-stack development. 🔧 Technologies & Expertise Generative AI & LLMs - Fine-tuning LLMs for persona writing, QnA, medical, legal, etc. - Specialized in Prompt Engineering, RAG systems, and Text-to-Speech (TTS) models - OpenAI API (GPT-3/4), DALL-E, LangChain, LangSmith - AutoGPT, Relevance.ai, LangChain, HuggingFace, Llama, Mistral, Falcon - Model Deployment on AWS (Lambda, EC2, S3), GCP (Vertex AI), RunPod, and SkyPilot AI Agents & Chatbots - Building AI Voice Agents and Text-Based Chatbots for customer service, sales calls, appointment scheduling, and more ( VAPI.ai, Retell.ai, Bland.ai ) - Expertise in RAG-enhanced chatbots, customized bots for specific industries, and AI-driven sales processes - Integration with VoiceFlow, Botpress, CrewAI, AutoGen, Amazon Polly, Diagram, Manychat - Multi-modal AI Agents that handle both text and voice interactions - Conversational AI systems using LLMs and open-source models AI Automation & APIs - No-code automation using Make.com, Zapier, and Flowise AI - API Integration across various services: OpenAI, Twilio, Stripe, Salesforce, Google Sheets, and more - Automating workflows for e-commerce, CRM systems, and social media interactions - Building web scraping tools and data extraction systems using BeautifulSoup, Scrapy, Selenium - Developing RESTful APIs and Web Services using Python (FastAPI, Django, Flask), Node.js, and Express.js Machine Learning & Data Engineering - ML Models for classification, regression, time series analysis, forecasting, OCR, GANs - Data pipelines with Apache Kafka, Spark, Airflow, and ETL processes - Vector databases for semantic search, retrieval-augmented generation (RAG): Pinecone, Weaviate, FAISS - Training models using TensorFlow, PyTorch, Scikit-learn, Keras - Expertise in data preprocessing, feature extraction, model evaluation, and hyperparameter tuning Full Stack Development - Frontend: React.js, Vue.js, Next.js, Angular, Tailwind CSS, SASS, Material-UI - Backend: Python (Django, Flask), Node.js, Golang, Express.js, FastAPI, GraphQL - Databases: PostgreSQL, MySQL, MongoDB, SQLite, Redis, CassandraDB, Elasticsearch - DevOps: Docker, Kubernetes, CI/CD with Jenkins, GitHub Actions, Terraform, Ansible - Cloud: AWS (EC2, Lambda, S3), GCP (Vertex AI, BigQuery), Azure, RunPod Notable Projects - AI Calling Agent: A voice AI solution for seamless customer interactions, integrating Deepgram, Amazon Polly, and OpenAI GPT-4. - AI-Driven Marketing Solutions: Integrating AI agents for e-commerce chatbots, appointment scheduling, and sales automation. - AI Voice Agent for Healthcare: Streamlining patient interactions with AI-powered virtual receptionists for appointment scheduling and follow-ups. Why Work with Me? - I bring a structured approach to every project: discovery, planning, execution, and ongoing support. - Over 7 years of experience in full-stack development and 3+ years of specialization in Generative AI. - I pride myself on clear communication and delivering high-quality, scalable solutions within deadlines. - 24/7 Availability: Dedicated to helping you build and scale AI solutions, no matter the time zone or complexity. Let's connect and explore how we can build your AI-powered future! Thanks & Regards 🌟, Oleksandr