Hire the best Big Data Developers in Johannesburg, ZA

Check out Big Data Developers in Johannesburg, ZA with the skills you need for your next job.
  • $45 hourly
    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.
    vsuc_fltilesrefresh_TrophyIcon Big Data
    Large Language Model
    SQL Programming
    Amazon Web Services
    Business Intelligence
    Microsoft Power BI
    TIBCO Spotfire
    Microsoft Azure
    Data Science
    Machine Learning
    Apache Spark
  • $50 hourly
    Greetings! I'm an experienced developer specializing in building systems and models for businesses of all sizes. My expertise lies in presenting and analyzing data from various sources, including SQL servers and folders. Strong command of Python, Pandas, TensorFlow for deep learning, as well as QlikView and Power BI, I possess the tools to transform your data into meaningful insights. I prioritize regular communication throughout the project lifecycle to ensure a seamless collaboration and understanding of your business needs. I am actively seeking clients who value the power of data-driven decision making and are looking for a dedicated developer to bring their vision to life. Let's work together to unlock the full potential of your data and drive your business forward!
    vsuc_fltilesrefresh_TrophyIcon Big Data
    Data Analytics
    Deep Neural Network
    Machine Learning Model
    Deep Learning
    Machine Learning
    Deep Learning Modeling
    Augmented Reality
  • $5 hourly
    A professional Risk Consultant with an excellent record of success in enterprise risk environment within the financial and insurance services industry. I am seeking a position within a diverse and recruiting setting that will utilize my expertise as a Risk Consultant, which will allow me to be initiative-taking in engaging clients which will ultimately make a difference to promote client understanding of business problems and risk management.
    vsuc_fltilesrefresh_TrophyIcon Big Data
    Report Writing
    Microsoft Project
    Management Skills
    Business Management
    Project Management
    Communication Skills
    Problem Solving
    Client Management
    Microsoft Excel
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