31 Senior data scientist Jobs and Work in Gauteng

Senior Data Scientist
NTT Data —Johannesburg, Gauteng
Quick Apply
Senior Intermediate Data Scientists
The Focus Group —Sandton, Gauteng
- R800 000 - R1 500 000 a year
- Full-time
Data Scientist
TechnoServe South Africa —Johannesburg, Gauteng 2196
- Remote
Quick Apply
(1647) Senior Data Science and Artificial Intelligence Engineer - BSTD
South African Reserve Bank —Pretoria, Gauteng
- Full-time
8d
Senior Regulatory Scientist
ICON Plc —Johannesburg, Gauteng
- Full-time
1d
Senior Data Engineer
Elixirr —Johannesburg, Gauteng
Data Scientist Entry Level (Contract)
The Focus Group —Sandton, Gauteng
- R18 000 - R21 000 a month
- Internship
Lead Data Scientist
TOTAL TRIALS INC —Centurion, Gauteng
- Full-time
- Remote
Quick Apply
Digital EHS Senior Implementation Engineer
AECOM —Centurion, Gauteng
- Full-time
Senior Data Engineer
Elixirr Digital —Johannesburg, Gauteng
- Full-time
Quick Apply
Senior Data Warehouse Developer
Momentum Insure Company Limited —Centurion, Gauteng
Senior Systems Analyst
NTT Data —Johannesburg, Gauteng
Quick Apply
14d
Custom Analytics Specialist -Johannesburg
EY —Johannesburg, Gauteng
10d
Senior Data Engineer (Databricks & Cloud Data Platforms)
DVT —Johannesburg, Gauteng
- Full-time
Quick Apply
9d
Senior Software Engineer, Windows/Desktop Applications - Johannesburg, South Africa
Speechify —Johannesburg, Gauteng
- Remote
10d
Data Engineer (Contract)
The Focus Group —Sandton, Gauteng
Technical Lead - AI Enablement Squad
Discovery Ltd. —Sandton, Gauteng
10d
Senior Brand Manager
Abbott Laboratories —Johannesburg, Gauteng
- Full-time
Data Engineer II
The Focus Group —Johannesburg, Gauteng
- Full-time
Associate Director, GIS
AECOM —Centurion, Gauteng
- Full-time

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Senior Data Scientist

NTT Data -
Johannesburg, Gauteng

Quick Apply

Job Details

Full Job Description

The Senior Data Scientist will lead the design, development, and deployment of advanced analytics and machine learning solutions that drive strategic decision-making and operational efficiency.

This role requires a deep understanding of data science, data engineering, and AI concepts, and will play a pivotal role in embedding intelligent automation and predictive modelling across the organisation.

Responsibilities

Build and implement machine learning models using structured and unstructured data to improve forecasting accuracy and enable proactive decision-making.
Optimise model performance and scalability through hyperparameter tuning and algorithm selection to enhance efficiency and reduce computational costs.
Implement reproducible research practices by using version control, documentation, and testing to maintain model integrity and facilitate collaboration.
Monitor deployed models in production using performance metrics and alerting systems to ensure reliability and timely intervention.
Automate repetitive data science tasks through scripting and workflow orchestration to increase productivity and reduce manual errors.
Maintain high data quality standards by conducting regular audits and validation checks to support trustworthy analytics.

Machine Learning

Expert in designing, developing, and deploying advanced machine learning and AI models.
Expert in selecting appropriate algorithms, optimising model performance, and mentoring junior team members in best practices.

Data Engineering & Architecture

Understanding of ETL/ELT processes and data pipeline design.
Ability to collaborate with data engineers to ensure data quality and accessibility.

Qualifications

Matric and a Bachelor's degree in Data Science, Computer Science, Statistics, Mathematics, or a related field.
6–8+ years of experience in data science, with at least 2–3 years in a senior or lead role.
Proven experience in developing and deploying machine learning models in production environments.
Strong proficiency in Python, R, SQL, and ML libraries (e.g., scikit-learn, TensorFlow, PyTorch).
Solid understanding of data engineering principles and cloud data architectures (e.g., Azure, AWS, GCP).
Experience with MLOps tools (e.g., MLflow, Kubeflow, Airflow).
Excellent communication and stakeholder engagement skills.

Advantageous

Master's degree in Data Science, Computer Science, Statistics, Mathematics, or related field.
Experience with large language models (LLMs) and generative AI.
Experience in healthcare, retail, or insurance data ecosystem

Quick Apply

Refine Your Search

senior data scientist jobs in gauteng

Senior Data Scientist

Senior Intermediate Data Scientists

Data Scientist

(1647) Senior Data Science and Artificial Intelligence Engineer - BSTD

Senior Regulatory Scientist

Senior Data Engineer

Data Scientist Entry Level (Contract)

Lead Data Scientist

Digital EHS Senior Implementation Engineer

Senior Data Engineer

Senior Data Warehouse Developer

Senior Systems Analyst

Custom Analytics Specialist -Johannesburg

Senior Data Engineer (Databricks & Cloud Data Platforms)

Senior Software Engineer, Windows/Desktop Applications - Johannesburg, South Africa

Data Engineer (Contract)

Technical Lead - AI Enablement Squad

Senior Brand Manager

Data Engineer II

Associate Director, GIS

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