Weipeng Z.
100% Job Success

Data Scientist and Engineer | Meta | OpenAI Experience

Top 1% 𝐔𝐩𝐰𝐨𝐫𝐤 𝐄𝐱𝐩𝐞𝐫𝐭 𝐕𝐞𝐭𝐭𝐞𝐝 | 𝐌𝐞𝐭𝐚 (Facebook) Senior Data Scientist | 𝐏𝐡𝐃-level Research from Georgia Tech (#3 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠 𝐒𝐜𝐡𝐨𝐨𝐥 in the country). With 15+ years of experience across the full data pipeline, I offer end-to-end AI solutions that drive significant business impact. My expertise spans: 🔹 Generative AI: Custom chatbots, RAG, LLM fine-tuning, AI agents 🔹 Data Science: Predictive modeling, machine learning, computer vision 🔹 Data Engineering: Scalable infrastructure, ETL, big-data processing Key Achievements: - Saved Meta (Facebook) $2M/month with an ML model for compromised case reviews - Developed an AI platform increasing a startup's value by $100K+/year - Built a genomics pipeline processing 100TB/day, 1000x faster than before - Created a $2M annual revenue product for a healthcare company My team and I have: - 50+ peer-reviewed publications, ensuring cutting-edge AI implementation - Partnerships with Fortune 500 companies and institutions like 𝐌𝐞𝐭𝐚, 𝐀𝐖𝐒, 𝐄𝐦𝐨𝐫𝐲 𝐔𝐧𝐢𝐯𝐞𝐫𝐬𝐢𝐭𝐲 𝐚𝐧𝐝 𝐉𝐨𝐡𝐧𝐬 𝐇𝐨𝐩𝐤𝐢𝐧𝐬 𝐔𝐧𝐢𝐯𝐞𝐫𝐬𝐢𝐭𝐲. - Experience in healthcare, fintech, tech, and higher education industries Whether you're a startup or a large corporation, I bring Meta-level expertise and academic rigor to solve your most complex data challenges. Let's discuss how we can leverage AI to drive your business forward. 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 𝐢𝐧𝐜𝐥𝐮𝐝𝐞: ◆Generative AI: prompt optimization, custom chatbots, Retrieval Augmented Generation (RAG), model (Llama, GPT4, Claude 2, Mistral...etc) fine-tuning, agent systems, vector databases, advanced manipulations (multi-vector/multi-query with reranking retrieval, entity/graph memory, map-reduce summarization...etc) ◆Data Science: comprehensive data analysis, predictive modeling, machine learning, computer vision, dimensional reduction and visualization ◆Data Engineering: resilient data infrastructure development, ETL, and big-data processing 𝐒𝐞𝐥𝐞𝐜𝐭𝐞𝐝 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞𝐬: 𝘎𝘦𝘯𝘦𝘳𝘢𝘵𝘪𝘷𝘦 𝘈𝘐 ◆Advanced RAG Chatbot: developed an advanced chatbot for a Stealth Financial Strategy start-up through 𝐦𝐮𝐥𝐭𝐢-𝐯𝐞𝐜𝐭𝐨𝐫 𝐫𝐞𝐭𝐫𝐢𝐞𝐯𝐚𝐥 𝐰𝐢𝐭𝐡 𝐫𝐞𝐫𝐚𝐧𝐤𝐢𝐧𝐠 𝐑𝐀𝐆 and multi-dimensional chat memory map-reduce summarization features. Performed custom instruction 𝐟𝐢𝐧𝐞-𝐭𝐮𝐧𝐢𝐧𝐠 to improve response accuracy, relevance and safety. ◆ Outreach Research and Personalization AI Agent Platform: Created a custom LLM application for large scale marketing outreach personalization with comprehensive competitors and market research 𝐀𝐈 𝐀𝐠𝐞𝐧𝐭 framework ◆ Vision AI for Dermatology Research: Developed and implemented a system to evaluate accuracy 𝐎𝐩𝐞𝐧𝐀𝐈’𝐬 𝐆𝐏𝐓-4 𝐕𝐢𝐬𝐢𝐨𝐧 in dermatological image analytics in partnership with dermatology medical residents at 𝐉𝐨𝐡𝐧𝐬 𝐇𝐨𝐩𝐤𝐢𝐧𝐬 𝐔𝐧𝐢𝐯𝐞𝐫𝐬𝐢𝐭𝐲. 𝘛𝘳𝘢𝘥𝘪𝘵𝘪𝘰𝘯𝘢𝘭 𝘋𝘢𝘵𝘢 𝘚𝘤𝘪𝘦𝘯𝘤𝘦 𝘢𝘯𝘥 𝘔𝘓: ◆Created a machine learning model (XGBoost) to predict quality of compromised case reviews, enabled routing of high risk cases to additional reviewer channels (𝐬𝐚𝐯𝐢𝐧𝐠 𝐌𝐞𝐭𝐚 𝐨𝐯𝐞𝐫 ~$2𝐌 𝐩𝐞𝐫 𝐦𝐨𝐧𝐭𝐡 in compromised revenue loss). ◆Created a new performance metric product offering using advanced dimensional reduction techniques which increased the value offering of a start-up by 𝐨𝐯𝐞𝐫 ~$100𝐤/ 𝐲𝐞𝐚𝐫 and growing 𝘋𝘢𝘵𝘢 𝘌𝘯𝘨𝘪𝘯𝘦𝘦𝘳𝘪𝘯𝘨: ◆Built a scalable distributed computing pipeline for a huge genomics start-up (𝐩𝐫𝐨𝐜𝐞𝐬𝐬𝐢𝐧𝐠 𝐨𝐯𝐞𝐫 100𝐓𝐁 𝐨𝐟 𝐝𝐚𝐭𝐚/𝐝𝐚𝐲) resulting in over 1000x reduction in processing speed. ◆Developed a new line of product through automated cleaning, processing, and transforming large claims data for a healthcare company that is continuously generating around $2𝐌 𝐢𝐧 𝐚𝐧𝐧𝐮𝐚𝐥 𝐫𝐞𝐯𝐞𝐧𝐮𝐞 𝐚𝐧𝐝 𝐠𝐫𝐨𝐰𝐢𝐧𝐠.
Work history

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  • Data Engineering
  • Chatbot
  • Generative AI
  • LangChain
  • LLM Prompt
  • ChatGPT
  • OpenAI API


Endorsements from past clients

"Weipeng worked with me on creating a proposal for high-impact training initiatives in Ethiopia and the country of Georgia. Wei listened carefully to my proposal goals and challenges before brainstorming proposal strategies with me. He was able to identify and troubleshoot problem areas efficiently and took a collaborative approach that utilized our complementary skillsets and perspectives. What I found particularly helpful is Weipeng's capacity to simplify complex concepts in a combination of verbal and quantitative data visualization. His data visualization skills - combined with a level of communication that is rare among the quantitatively minded - simply outstanding. Weipeng is a joy to work with and makes excellent use of his time on projects. "

Hannah N. | Director of Training, International Research Train
Sep 2022