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Hire the best Data Scientists in Johannesburg, ZA

Check out Data Scientists in Johannesburg, ZA with the skills you need for your next job.
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  • $70 hourly
    • 4.9/5
    • (3 jobs)
    I am an accomplished Data Engineer and Data Scientist with a proven track record across diverse industries, offering unparalleled expertise to Upwork clients. My skills in data engineering and data science combine technical proficiency with analytical acumen, allowing me to effectively address a wide range of data challenges. I specialize in transforming complex datasets into valuable insights and actionable solutions, empowering businesses to make strategic decisions and achieve measurable outcomes. My extensive technical toolkit includes mastery of DataBricks, Docker, Terraform, Airflow, Apache Spark, SQL, big data, business intelligence tools (PowerBI, Tableau, Spotfire), and cloud computing platforms (AWS, GCP, and Azure). I am well-versed in Tensorflow, Keras, and SparkML, with a preference for languages such as Python, R, and SQL. Additionally, I am proficient in other data science languages. In addition to individual contributions, I founded Telios Data, a thriving data science shop that unites talented developers. In leadership roles, I've orchestrated the formation of high-performing data engineering and data science teams, streamlining in-business processes for maximum efficiency. Here are some highlights of my achievements: Senior Data Scientist at Liminal Clarity: Pioneered the development of a groundbreaking machine learning cloud application on AWS, reducing deployment time per tenant by an impressive 60%. Spearheaded the creation of machine learning models that not only identified fraudulent behavior but also enhanced client security using open source large language models. Successfully led the development team to produce a product that garnered attention and positive feedback from a prominent South African VC firm. Data Scientist at IT Master: Drove the establishment of data engineering and data science teams, achieving a 40% reduction in deployment time through the introduction of innovative Terraform templates. Engineered a data lake, integrating information from disparate source systems using DataBricks and implementing automated ETL Azure pipelines. Innovatively developed machine learning models that identified sales opportunities and optimized stock levels, showcasing a keen understanding of business dynamics. Senior Data Engineer at Raiffeisen Bank: Translated business needs into automated data models, incorporating data quality checks using Great Expectations and Glue cataloging, ensuring precision for business processes. Implemented robust data security measures, building encryption and decryption functions using Federated queries on AWS Athena, ensuring compliance with GDPR rules. Data Scientist at inQuba: Collaborated with clients to devise unique business solutions, resulting in improved client service delivery, customer retention, and loyalty. Designed and implemented an NLP algorithm parsing customer feedback, leading to a significant 20% improvement in customer satisfaction scores. Worked closely with developers and analysts to create dashboards and reporting for actionable insights. Projects Consultant: Designed and implemented advanced loan matching architecture, introducing a real-time affordability engine using OCR technology, automating a manual process and processing thousands of loans swiftly. Developed innovative algorithms for efficient promotion offerings, boosting customer loyalty and lifetime value by an impressive 15% in the first year. Collaborated with Safaricom on a data migration project to AWS and developed machine learning models for churn prediction. Built pre-fraud detection algorithms and architecture for a major Kenyan telecommunications company, using localstack to optimize development costs. I am passionate about delivering exceptional results and am eager to discuss how I can contribute to your projects and help you achieve your goals. Let's connect and explore the exciting possibilities together.
    Featured Skill Data Science
    Large Language Model
    Neo4j
    SQL Programming
    Amazon Web Services
    Business Intelligence
    Microsoft Power BI
    TIBCO Spotfire
    Microsoft Azure
    Big Data
    Terraform
    Machine Learning
    Apache Spark
    Python
    Tableau
  • $45 hourly
    • 5.0/5
    • (12 jobs)
    As a Masters in Data Science student and data analyst, I specialize in analyzing, scraping and visualizing data using tools such as Power BI, SQL, Excel, and Python. My expertise lies in data analysis and visualization, and I pride myself on my ability to translate complex data into easily understandable insights. I am skilled in identifying patterns and trends in complex data, and developing custom dashboards and reports to track key performance indicators. Additionally, I prioritize clear communication and attention to detail to ensure accuracy and understanding for all stakeholders. I work the full gambit of analytics from data extraction and cleaning to data analysis then to visualization and written presentation. My skills include: - Data Visualization using Power BI & Excel - SAS - SQL & SSRS Report Builder - Microsoft Azure - Microsoft Fabric - BigQuery - Octoparse - Web Scraping - Excel - Python - Exploratory Data Analysis - Microsoft PowerPoint Donation: 5% of all bottom-line earnings go to the charity of your choice: Huntington’s Association of South Africa, Living Hope or SOS Children’s Villages.
    Featured Skill Data Science
    Microsoft Excel
    Data Collection
    Data Cleaning
    Python
    Analytical Presentation
    ChatGPT
    Data Analysis
    Business Intelligence
    Microsoft Power BI
    SQL Server Reporting Services
    Data Visualization
    SQL
    Financial Statements Preparation
    Finance & Accounting
  • $15 hourly
    • 5.0/5
    • (1 job)
    I am an ambitious entrepreneur , whos experience has been built on over 20 years experience in the sales/marketing and IT sectors. I gained extensive experience in ERP/CRM systems as well as Project Management as an account manager. I set up my own consultant business in 2014 to use and expand on my experience and diversified into web development and social media marketing in 2018. I have also been involved as a Project manager and Business Analyst.
    Featured Skill Data Science
    ERP Software
    Web Design
    Salesforce CRM
    Marketing
    Web Application
    Freelance Marketing
    CRM Software
    Web Development
    Analytics
    Social Media Marketing
    Social Media Management
    Data Analysis
    Business Intelligence
  • $60 hourly
    • 0.0/5
    • (3 jobs)
    monday.com Certified Partner & Workflow Architect A dynamic and results-oriented monday.com Certified Partner, I excel in transforming complex project management challenges into streamlined, efficient workflows. Currently enhancing my expertise with an Honors BSc degree in Data Science and AI, I combine technical understanding with strategic planning to deliver exceptional results. My Expertise: 1. Strategic Workflow Optimization: I specialize in setting up and customizing monday.com to fit your unique business needs, ensuring a seamless, efficient workflow. 2. Innovative Solutions with Automation: Dive into the world of automation with me! I'll guide you and your team on leveraging monday.com's powerful automation features to revolutionize your daily work life. 3. Streamlining Operations: Say goodbye to repetitive tasks. I focus on process optimization, reducing redundancies, and boosting productivity. 4. Comprehensive Training & Support: My goal is to empower your team with the knowledge and skills to fully utilize monday.com, fostering self-sufficiency and confidence. With a deep understanding of monday.com's versatile platform, I design and implement tailored solutions that align with your company's needs. I prioritize understanding your business inside-out, ensuring solutions are technically sound and align with your business goals and culture. I am experienced in integrating monday.com with a wide range of third-party apps, including QuickBooks, Google Docs, Calendly, and more, to create a cohesive ecosystem for your business. Whether it's Sales & CRM, HR, Marketing, Legal, or Finance, I have the expertise to craft specialized solutions across various domains. Ready to elevate your business with monday.com? Please message me or invite me to a job for a free 30-minute consultation. I'll promptly respond with a Calendly link to schedule our session. Let's discuss your needs, map out a solution, and set a clear timeline and budget. I look forward to partnering with you!
    Featured Skill Data Science
    Project Workflows
    Automation
    Active Listening
    Consultation Session
    Concept Development
    Website Optimization
    Editing & Proofreading
    Email Testing
    Web Testing
    AI-Generated Transcription
    Content Writing
    Mathematics
    Virtual Assistance
  • $85 hourly
    • 0.0/5
    • (0 jobs)
    AI Consultant | AI Automation | Data Analytics | NLP & Chatbots I’m an AI consultant and engineer with a PhD in AI from the University of Edinburgh. I bring a wealth of experience leading AI-driven initiatives for a team of 15+ engineers and scientists. I currently specialize in AI automation, process optimization, and data analytics to help businesses enhance efficiency, cut costs, and unlock growth. ✅ What I Offer: 🔹 AI-powered process automation to streamline operations 🔹 AI-driven chatbots (Rasa, Llama, Retrieval-Augmented Generation) 🔹 NLP and speech technologies (ASR, TTS, Voice Dubbing) 🔹 AI consulting for business efficiency and innovation 🔹 Data analytics and insights for informed decision-making With a background in both corporate and research, I bring cutting-edge AI solutions to businesses looking to stay ahead in a competitive digital landscape. Whether you need an AI strategy, automation, or chatbot development, I deliver customized, high-impact solutions tailored to your business needs. Let’s work together to make AI work for you!
    Featured Skill Data Science
    App Development
    AI Agent Development
    Business Strategy
    Prompt Engineering
    Generative AI
    Large Language Model
    Natural Language Processing
    Natural Language Generation
    Automatic Speech Recognition
    Speech Synthesis
    Exploratory Data Analysis
    Machine Learning
    Artificial Intelligence
  • $14 hourly
    • 0.0/5
    • (0 jobs)
    I’m a Mobile App and IoT Developer with a focus on Flutter, Firebase, and IoT integration. I bring hands-on experience connecting mobile apps to hardware, specializing in BLE for real-time data and Firebase for reliable data management. Key Skills: - Mobile Development: Skilled in Flutter for cross-platform apps, BLE, Firebase, and Google Cloud Platform. - IoT Integration: Experience with ESP32 and STM32 for smart device control and monitoring. - Data Visualization: Proficient in BigQuery and Looker Studio for data analytics. Notable Project: Etamax Solar Geyser Management System – Developed an app to enable remote monitoring and control of solar geysers, with BLE for data sync and automated reporting through Firebase.
    Featured Skill Data Science
    Google Cloud Platform
    SQL
    Data Visualization
    Database Management System
    Firebase
    Mobile App Development
    UX & UI Design
    Dart
    ESP32
    STM32
    Bluetooth LE
    Firebase Cloud Firestore
    Flutter
    Python
  • $95 hourly
    • 0.0/5
    • (1 job)
    As a seasoned Data Scientist and Machine Learning Engineer, I bring a wealth of expertise in developing and deploying advanced machine learning models. My strengths lie in my analytical mindset, proficiency in programming languages such as Python and R, and my ability to translate complex data into actionable insights. Strengths and Skills: - Machine Learning & AI: Expertise in building predictive models, including sales forecasting and credit card fraud detection using algorithms like XGBoost and neural networks. - Data Analysis: Proficient in data cleaning, visualization, and statistical analysis to uncover trends and patterns. - Programming: Skilled in Python, R, SQL, and familiar with big data technologies like Hadoop and Spark. - Problem-Solving: Strong ability to tackle complex problems and deliver innovative solutions. - Communication: Excellent at conveying technical information to non-technical stakeholders. Projects and Accomplishments: - Loan approval AI model with 99% accuracy at approving loans - Sales Forecasting Model: Successfully developed an XGBoost model that improved sales prediction accuracy by 20%. - Credit Card Fraud Detection: Implemented a machine learning model that reduced false positives by 15%, enhancing the security of financial transactions, and 99% accuracy in detecting fraudulent transactions. - Customer Segmentation: Conducted a comprehensive analysis leading to the creation of targeted marketing strategies, resulting in a 25% increase in customer engagement.
    Featured Skill Data Science
    Logistic Regression
    Linear Regression
    Industry & Competitor Analysis
    Tableau
    Exploratory Data Analysis
    Data Analysis
    Neural Network
    XGBoost
    Machine Learning
    Artificial Intelligence
  • $15 hourly
    • 0.0/5
    • (0 jobs)
    I seamlessly blend digital marketing and web design to create a harmonious online presence and to ensure the brand shines across all platforms and climbs the search engine ladder. Prepared to leverage 4 years of marketing and web design experience to take on dynamic new roles.
    Featured Skill Data Science
    Graphic Design
    Event Photography
    Marketing Analytics
    Back-End Development
    Front-End Development
    Information Security
  • $7 hourly
    • 0.0/5
    • (0 jobs)
    SUMMARY Detail-oriented administrative professional with certifications in Human Resources, ICDL, IT Essentials, and Data Science. Skilled in administrative tasks, computer hardware, networking basics, and data management. Efficient, adaptable, and committed to supporting organizational operations through technical and administrative expertise. OBJECTIVE Dedicated IT technician and human resources administrator with a strong background in managing technology systems and supporting workforce development. Seeking to leverage technical expertise and HR knowledge to enhance operational efficiency and foster a collaborative work environment in a growthoriented organization.
    Featured Skill Data Science
    Computer Network
    PowerPoint Presentation
    Microsoft Outlook
    Word Processing
    Microsoft Excel PowerPivot
    Network Administration
    Operating System
    Mobile Operating System
    Inkjet Printer
    Laser Printer
    Laptop
    Desktop & Laptop Support
    Computer Hardware
    Human Resources
  • $15 hourly
    • 0.0/5
    • (0 jobs)
    Profile A driven and enthusiastic Data Scientist with over 3 years of experience in transforming complex data into actionable insights. Skilled in statistical modeling, machine learning, and data visualization, with expertise in Python, SQL, and cloud-based tools. Passionate about leveraging data to solve problems and make informed decisions. Currently seeking freelance opportunities to apply skills in innovative projects.
    Featured Skill Data Science
    Data Engineering
    Data Cleaning
    Data Analysis
    Data Extraction
  • $35 hourly
    • 0.0/5
    • (1 job)
    Hey, this is S.Shakir, I'm a Data Scientist with MS Data Science Degree and numerous certifications. I have hands on experience with working on Machine Learning, Deep Learning projects(Scikit-learn, Pytorch, Numpy, Matplotlib, Scipy) and NLP (Time series: LSTM, Transformers) as well as Data Visualization (Tableau). I work on optical character recognition (OCR) related task in my spare time. I'm here to help you with your AI and Data Science related projects and automate your work using data science techniques
    Featured Skill Data Science
    Data Engineering
    Data Science Consultation
    Data Scraping
    Data Labeling
    Data Modeling
    Data Analytics & Visualization Software
    Python
    Data Analysis
    Data Analytics
  • $30 hourly
    • 0.0/5
    • (0 jobs)
    I have 5 year of experience in IT industry in which 3 years as a data scientist. I have good experience in data visualization and in my short career I worked some big names for data visualisations. Machine Learning Expert with specialization in Deep learning (Computer Vision/Image Processing). #Masters in Computer Science Python Expert (keras,pytorch,tensorflow) Data scrapping(beautiful soup, request) Specialized work: Pyspark ETL azure databricks perdictive modelling
    Featured Skill Data Science
    ETL
    AWS Glue
    Artificial Intelligence
    Data Extraction
    PySpark
    AWS Cloud9
    AWS Lambda
    Natural Language Processing
    Machine Learning
    Python
    Computer Vision
    Databricks Platform
  • $20 hourly
    • 0.0/5
    • (0 jobs)
    I am a versatile Data Analyst, Data Engineer, and BI Developer with extensive experience in designing and implementing data integration and analytics solutions. Proficient in Python, C#, PowerShell, and SQL, I excel in crafting high-performance data pipelines, optimizing ETL processes, and delivering actionable insights through advanced analytics and reporting tools like Power BI. My strong background in Applied Mathematics and Computer Science enables me to solve complex data challenges, while my hands-on experience with cloud platforms such as Azure and Databricks positions me to drive data-driven decision-making in dynamic environments. I am passionate about transforming raw data into valuable insights and helping businesses achieve their strategic goals through data.
    Featured Skill Data Science
    Cloud Computing
    Data Engineering
    Machine Learning
    Data Warehousing & ETL Software
    Data Analysis
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