Sammy D.

Senior Data Scientist | AI Engineer | Agentic Workflows, ML, Analytics

If your business is sitting on data and not getting value from it, or you need to integrate AI into your product or operations, that's the exact problem I solve. I build AI agents, LLM-powered workflows, predictive models, and production analytics systems for companies across industries. Whether you need a Claude or GPT-powered agent that takes real actions, a RAG system over your internal docs, an ML model deployed to AWS, or a live dashboard pulling from your CRM and ad platforms, I've built all of it for real clients and I can build it for you. What I work on: • AI agents and agentic workflows (tool use, function calling, multi-step automation) • LLM integration and RAG pipelines (OpenAI, Anthropic, vector databases) • ML model development and cloud deployment (AWS Lambda, Docker, XGBoost, scikit-learn) • Marketing and product analytics dashboards (HubSpot, Facebook Ads, Google Ads, Tableau, Power BI) • Data pipelines and ETL/ELT workflows (Python, SQL, dbt, Snowflake, BigQuery) • Data science and AI instruction for teams and individuals Background: I previously served as a Senior Data Scientist at Snow Fox Data, where I built time-series forecasting and optimization systems for clients including Mitsubishi and Oshkosh Defense. Through my consultancy, Stepwise Data LLC, I've since partnered with 60+ organizations across 10+ industries, including TimeDoc Health, InStride, Big Thought, and JPL. Clients have said: • "Great experience working with Sammy. Very communicative and quick to make adjustments and changes I requested!" • "I hired Sammy to help crunch numbers on a marketing survey and was impressed by his availability, patience, high quality deliverables and clear, concise communication. If you're looking for McKinsey-grade talent on a visible, data-driven analysis, hire Sammy. I'm glad I did." • "Sammy quickly translated our business and data challenges and architected a great solution and also made a couple of creative suggestions that we really appreciated. This product is immediately useful to our business and has great expansion capabilities built in. Highly recommended, thank you again." • "Sammy was a delight to work with. He is smart and passionate about his field. What really impressed me was his communication skills. He seemed to be able to anticipate what I was trying to ask even if I was struggling to formulate my question. And he was very good at explaining. After the job was completed, he went above and beyond my expectations by preparing documentation. Do yourself a favor and hire him!" I'm highly responsive and happy to jump on a call to discuss your project. Reach out and let's talk.