Hire the Best Computer Scientists
in South Africa

I am a seasoned developer with extensive experience in backend development, server administration, and cybersecurity. My journey in the tech world began over a decade ago, and since then, I have honed my skills in various aspects of web development and webmastering. I am proficient in PHP, MySQL, Redis, Memcached, and domain setup, which allows me to build robust and scalable web applications. I also have experiencing in Desktop App development using VB6, VB.NET, C# and Python on Sql Server. Designed and programmed a database manager for Securinfo for SAP and did programming and new feature implementation for Securinfo in the early 2000s. In 2010, I served as the webmaster for a high-traffic website, where I managed all facets of the site’s operations. This role provided me with invaluable experience in handling large volumes of traffic, optimizing server performance, and ensuring the site’s security and stability. My responsibilities included server administration, database management, and implementing caching solutions to enhance site speed and performance. My passion for cybersecurity led me to develop and own a site security scanner SaaS. This tool helps website owners identify and mitigate security vulnerabilities, ensuring their sites remain safe from potential threats. My deep understanding of web security protocols and best practices enables me to provide clients with secure and reliable web solutions. I am adept at setting up and managing servers, configuring domains, and optimizing backend processes to ensure seamless user experiences. My technical expertise is complemented by my ability to troubleshoot complex issues and implement effective solutions quickly. I am always eager to learn new technologies and stay updated with the latest industry trends to deliver cutting-edge solutions to my clients. As a freelancer on Upwork, I am committed to providing high-quality services tailored to meet the unique needs of each client. Whether you need assistance with backend development, server administration, or enhancing your site’s security, I am here to help. My goal is to leverage my skills and experience to help you achieve your project objectives efficiently and effectively. Let’s collaborate to bring your vision to life and ensure your web presence is secure, fast, and reliable. I look forward to working with you and contributing to your success.

🚀 I help businesses turn raw data into actionable insights. With over 4 years of experience in ETL, data warehousing, and BI solutions, I specialize in building end-to-end data pipelines that support better decision-making in Banking, Retail, Financial Services, etc. Whether you're migrating to the cloud, building dashboards, or transforming raw data into clean, usable formats, I help you get it done faster and more reliably. 🔧 What I Offer: - Data warehousing (Snowflake, Redshift, MSSQL, PostgreSQL) - ETL pipelines (Python, DBT, Matillion, AWS Glue, Azure Data Factory) - BI dashboards (Power BI, Tableau) - Web scraping with Scrapy & Python - Data cleansing and transformation - SQL performance optimization - Cloud solutions (AWS, Azure) 📊 I’ve worked with terabytes of data and developed full pipelines from ingestion to reporting, helping businesses save time, cut costs, and make data-driven decisions. 🛠 Tools & Technologies: Languages: Python, SQL, Java, PHP Reporting: Tableau, Power BI Databases: MSSQL, MySQL, PostgreSQL Cloud & ETL: AWS, Azure, Snowflake, DBT, Matillion Other: PySpark, SAS, Scrapy 📜 Certifications: My profile lists AWS Certified Data Engineer, Azure Data Scientist Associate, and other relevant certifications. Let’s discuss how I can help you unlock the true value of your data.

• 35 years of IT experience. • I am an expert BI Data Analyst and an expert BI Developer. • I am an expert using SQL • I am an expert using Excel • I do incredible BI Reports, using my Presentation, Communication, and Statistical skills, by “Telling-a-Story”. • I have a bachelor’s degree in Statistics (BSc), with Computer Science, Mathematics, and Applied Mathematics as secondary majors. • I am extremely comfortable in over 15 Computer Programming Languages, including C#, C++, Java, Python, PHP, VB, VBA, React, Vue, etc. • I am extremely comfortable with over 7 Computer Databases, including MS SQL Server, Oracle, DB2, MS Access, etc.

I've been programming for 25 years. I exited my venture backed YCombinator AI startup so I know how to balance technical and business requirements. I'm a computer vision & machine learning expert with a Masters degree in statistics. I have won awards for A.I. projects with Mercedes-Benz, NTT Japan, Lloyd's Register London and more. I have given talks on computer vision at conferences around the world, including keynotes on computer vision at PyCon and the Google Developer Conference. I have extensive applied experience with: * Computer Vision * Large Language Models (LLMs) * Supervised Learning * Unsupervised Learning * Reinforcement Learning * Natural Language Processing (NLP) * Neural Networks * Generative Adversarial Networks (GANs) * Transfer Learning * Dimensionality Reduction * Ensemble Methods And have extensive experience with the following tools: * TensorFlow * PyTorch * Scikit-Learn * Keras * Hugging Face Transformers * YOLO (You Only Look Once) * LangChain * XGBoost * OpenCV * LightGBM * PaddleOCR / Tesseract I build end-to-end full-stack solutions with APIs / Interfaces and are fully deployed with stable cloud infrastructure where required. Looking forward to working together :)

I am a Data Team Lead and Senior Data Scientist with 6+ years of experience building production data pipelines, machine-learning systems, statistical models, and business analytics products. I help organisations transform complex data into reliable systems, clear insights, and practical business decisions. My experience covers the full data lifecycle—from extracting and cleaning data to statistical modelling, cloud automation, dashboard development, testing, and optimisation. I can help you with: • Python and SQL data analysis • Data cleaning, transformation, and validation • ETL/ELT pipeline development • BigQuery warehouse design and optimisation • Google Cloud automation with Pub/Sub, Cloud Functions, GCS, and Vertex AI • Machine-learning models, forecasting, and change-point detection • Statistical analysis and hypothesis testing • Customer-journey, geospatial, marketing-attribution, and campaign analysis • Streamlit and Replit analytics applications • Looker Studio, Tableau, and Metabase dashboards • Pipeline testing, troubleshooting, documentation, and optimisation For a restaurant analytics project, I developed a Python system to measure sales changes following menu updates. It combined PELT and Bayesian change-point detection, Mann-Whitney U tests, Cliff's Delta, z-scores, model-evaluation metrics, and visual reporting. The system ranked menu items according to the magnitude and statistical significance of their sales changes. My core stack includes Python, SQL, R, pandas, NumPy, SciPy, scikit-learn, BigQuery, Snowflake, Vertex AI, Cloud Functions, Pub/Sub, Google Cloud Storage, Streamlit, Replit, Looker Studio, Tableau, Metabase, and Git. You can expect clear communication, maintainable code, careful statistical reasoning, reproducible analysis, thorough validation, practical documentation, and solutions connected to your business objectives. If you need help analysing data, automating a workflow, developing a predictive model, or turning a prototype into a reliable analytics product, send me a message and let's discuss your project.

I'm an experienced professional with a strong foundation in Machine Learning, Python, and Data Science, backed by 5 years of hands-on experience. I've had the privilege of working across diverse domains of AI/ML, including Computer Vision, Deep Learning, Reinforcement Learning, Natural Language Processing, and more. I have done work for companies such as: ✔ Katalon ✔ Green Hat Web Solutions ✔ 2U ✔ edX ✔ Analytics Vidhya ✔ GlobalDots ✔ Zilliz ✔ AriesNet Inc. ✔ Apeability Throughout my career, I've consistently delivered impactful solutions by leveraging my expertise in Python, TensorFlow, SciKit-Learn, Keras, and LOTS of other frameworks. My ability to translate complex concepts into practical applications has resulted in successful projects and satisfied clients. My passion for continuous learning has led me to explore cutting-edge techniques and stay updated with the latest advancements in AI/ML. This commitment to staying ahead of the curve ensures that I bring innovative ideas and solutions to every project I undertake. I have been fortunate to a part of several startups so I am aware of the sacrifices, time, effort, and dedication that is required to drive a company forward. I bring an unstoppable energy to every project, fueled by my boundless expertise and a determination to exceed expectations.. Skills & Expertise: ✓ Python ✓ R ✓ Java ✓ C++ ✓ TensorFlow ✓ SciPy ✓ NumPy ✓ Pandas ✓ Scikit-learn ✓ Matplotlib ✓ Seaborn ✓ NLTK ✓ OpenCV ✓ Git, ✓ SQL ✓ MongoDB ✓ MariaDB ✓ HTML ✓ CSS ✓JavaScript ✓ Flask ✓ Django ✓ PHP ✓ Hadoop ✓ Tableau ✓ Reinforcement Learning ✓ Generative AI ✓ Transformer Models ✓ Hyperparameter Tuning ✓ Mentoring & Teaching ✓ Project Management ✓ Collaboration & Communication ✓ Problem Solving ✓ Adaptability & Learning I am a patient and supportive guy who loves contributing to the success of a company! Don't hesitate to reach out and say hi 😄