Charles Degraft-Johnson

AI Expert @Scale AI

🔥 Startup Founder✔️ IT💼 C-level Executive🧑‍🔬 EngineerBackend DeveloperSystem AnalystDevOpsProduct ManagerProject ManagerComputer engineerML EngineerData ScientistData EngineerData AnalystBI Analyst

Scale AI is leading the frontier in artificial intelligence technology, and Charles Degraft-Johnson, as an AI expert, plays a significant role in this endeavor. His expertise in machine learning, deep learning, and data analysis contributes to the development of high-quality AI solutions that cater to various industries. His responsibilities include developing AI models, improving AI system performance, and ensuring the accuracy and reliability of AI applications. Charles continues to push the boundaries of AI technology, driving Scale AI towards its goal of accelerating the application of AI on a global scale. His work contributes to the company's mission of making AI more accessible and beneficial for everyone.

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Work Background

Scale AIAI & Data Science Expert - LLM Training

Oct. 2023Training AI large language models / generative AI models to write better more accurate code. Example projects: - Solving highly complex coding & Data Science/Analysis problems - Optimizing code to run at maximum efficiency - Writing robust test cases to confirm that code works efficiently and effectively - Writing human-readable summaries of complex coding & Data Science/Analysis problems - Writing explanations of how Python code/libraries (Numpy,Pandas, sklearn, PyTorch, TensorFlow, Keras, can be used to solve AI/ML/Data science problems and evaluating various solution approaches

LIFE & SOLE EYEGenerative AI Engineer (Freelance)

Aug. 2023 - Sep. 2023Engineered and deployed P.O.C.s LLM pipelines, agents & bots using a hybrid LLM model implementation (Vertex.ai/ local GPT-J 6B) with a Multi-modal Retrieval Augmented Generation (RAG) architecture to improve inference accuracy. Developed and deployed Chatbot web applications, using Chainlit, React and Node. JS. Python. The backend is implemented mainly using the Langchain library plus Docker Containerization, Pinecone vector db, LlamaIndex and (Hugging Face + CLIP + OpenAI embeddings).

Fika Mental FitnessHead Of Technology and Data

Aug. 2022 - Mar. 2023Designed & implemented scalable Data Analytics platform,(ETL & MLOPS) pipelines and an integrated data lake using Looker, PySpark, Cloud Workflow Dataform, sklearn, PyTorch, TensorFlow, Keras, Python RestAPIs, BigQuery & Vertex , github actions, Docker,AI/BQML recommendation systems.

Arithmix, Inc.Lead Engineer

Jan. 2022 - May. 2022London, England, United KingdomLed development teams in strategic planning while assuming VP-level responsibilities, including stakeholder management, managing managers, and making regular engineering roadmap and system documentation contributions.

PPLLead Data Engineer

Jul. 2021 - Dec. 2021Soho, London, England, United KingdomEnhanced the existing Data Analytics platform by developing SQL pipeline scripts and managing data transformation into a Snowflake Data Warehouse while integrating ML and NLP models to improve data quality Create high-performance data ETL/ELT pipelines using Python in AWS Managed Airflow Service, boosting productivity for the Finance and Radio Airplay teams.

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