Arun s.

AI & ML Engineer | Production GenAI, RAG, Voice AI | BI & Automation

🏆 Top Rated AI Expert | Scalable LLM, RAG & Voice AI | Data & BI ⭐ Most AI projects die between demo and production. I deliver production-ready solutions with honest scoping before budget moves. I don't just build models; I build systems that scale, secure, and save costs. 💬 HOW I WORK Free 30-minute consultation: I map out how AI applies to your workflow, prioritizing process simplification over immediate automation. Cost-Control Architecture: I prevent token costs from scaling using rolling summaries, model routing, prompt caching, and server-side daily usage limits. Quality Guarantee: Industrial-grade code, fully documented. Bugs in delivered scope fixed at no extra cost. Milestone Validation: You review and approve each milestone before payment releases. Transparent Communication: Weekly updates and clear progress tracking throughout the project. LIVE DEMOS & PORTFOLIO Access credentials available via direct message or Upwork Portfolio section. Document AI (RAG): Instant answers from PDFs, contracts, and manuals with source citations. Conversational Voice AI: 24/7 call handling, scheduling, and CRM sync. AI Stock Analysis: Automated summaries and investment recommendations. Clinical Trial Matching: HIPAA-compliant patient data deidentification and trial matching. Computer Vision: Defect grading, object detection, and floor plan measurement. Synthetic Data: Scalable data generation for testing and training. Lead Intelligence: Agentic workflows for lead qualification and outreach. 💬 Send the use case, get a straight read: feasible or not, how long, what it costs. Then it is built to criteria you approve. 🔧 SERVICES | Production Ready AI, Built and Shipped for Startups & Enterprises Voice AI & Conversational Agents: 24/7 call handling, appointment booking, CRM sync, and seamless human handoff. Low-latency pipelines with context retention. (Vapi, Retell, Twilio, ElevenLabs, Deepgram). AI Agents & Automation: Connect CRM, spreadsheets, and tools into autonomous workflows. Agents verify identity before booking/refunding. (n8n, Make, LangChain, CrewAI). Generative AI & LLM Apps: Custom chatbots for web/Slack/WhatsApp that stay on your data and return clean JSON. Guardrails prevent hallucinations. (OpenAI, Claude, Llama, FastAPI). RAG & Enterprise Search: Chat with PDFs/contracts with source citations; accurate search past 1.5M documents. Hybrid search with re-ranking. (LlamaIndex, pgvector, Elasticsearch). NLP, OCR & Document Intelligence: Extract data from invoices/contracts into Excel/CSV/JSON. Low-confidence values flagged for review. (Google Doc AI, Tesseract, spaCy). Data Pipelines: Automated scraping, cleaning, and organization of files (including SEC EDGAR/SEDAR). Scheduled pipelines with duplicate removal. (Python, Airflow, Scrapy). Business Intelligence & Analytics: Dashboards, KPI tracking, and automated reporting. Turn raw data into actionable insights with clear visualizations. (Power BI, Tableau, Looker, SQL, dbt). Machine Learning: Forecasting, churn prediction, fraud detection. Trained on messy real data with actionable benchmark reports. (Scikit-Learn, XGBoost, R). Healthcare & Clinical AI: Patient data deidentification, lab code mapping, trial matching. HIPAA-compliant deployment. (i2b2, OMOP, SQL). Computer Vision: Object detection, defect grading, image similarity. Models trained on real-world images for live feeds. (YOLO, PyTorch, OpenCV). Generative AI & Media: AI avatar/video at scale (spreadsheet + script → finished video). Consistent character identity and lip sync. (Synthesia, Tavus, Stable Diffusion). 🛠️ TECH STACK Core: Python, JavaScript, TypeScript, React, Node.js, SQL, R, Docker, AWS, Azure, GCP, Kubernetes. LLMs & Agents: GPT-4, MCP, AutoGen, Amazon Bedrock, Ollama, Gemini, DeepSeek, Groq, Qwen, Semantic Kernel. RAG & Search: Pinecone, Weaviate, ChromaDB, Haystack, BM25, RAGAS, OpenAI Embeddings, pgvector. Voice AI: ASR, WebRTC, GoHighLevel, LiveKit, Amazon Polly, Azure Speech. NLP & Document AI: NLTK, Sentence Transformers, PaddleOCR, RoBERTa, DeBERTa, T5, LayoutLM, PyMuPDF, GLiNER. Vision & Deep Learning: TensorFlow, Keras, Roboflow, Ultralytics, MediaPipe, Detectron2, ONNX, PEFT, LoRA, QLoRA. ML & Data: PostgreSQL, SQL Server, BigQuery, Snowflake, Databricks, Apache Spark, Kafka, ETL, pandas, NumPy, dbt. Business Intelligence: Power BI, Tableau, Looker, Metabase, Superset, D3.js. MLOps & Cloud: SageMaker, MLflow, GitHub Actions, CI/CD, Vertex AI, vLLM, Triton. Full Stack & Automation: Django, Flask, Redis, REST API, GraphQL, MongoDB, Next.js, Zapier, Streamlit, Gradio, Supabase, Vercel, Celery, FastAPI.