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Salary
$19k – $45k per year (Estimated)
Location
In office (Johannesburg)
Seniority
Middle · 3+ years exp
Employment
Full-Time
Overview
Company
Impact
Profile match
Job Mail is a South African online job board offering a large selection of vacancies across the country and some positions abroad. Job seekers can search and apply for jobs online, upload a CV and receive job alerts, while employers and recruitment agencies can advertise positions to a broad national audience. The brand is one of the longer-established names in South African job advertising and is operated from South Africa.
Job Description

Position Overview

We are seeking an experienced and highly analytical Senior Data Scientist to join a dynamic team focused on developing intelligent systems that drive measurable business outcomes. This role is ideal for a technically strong data science professional who enjoys solving complex problems, influencing solution design, and mentoring others while remaining hands-on in delivery.

The successful candidate will operate as an advanced contributor and emerging leader, taking ownership of complex workstreams, shaping analytical and machine learning solutions, and collaborating closely with cross-functional teams to deliver high-impact results.

Key Responsibilities

Data Science & Solution Delivery

  • Solve complex and ambiguous data science challenges from concept through implementation.
  • Design, develop, and deploy advanced analytical and machine learning solutions.
  • Translate loosely defined business problems into structured analytical approaches.
  • Lead and own delivery of key project workstreams.
  • Contribute to architecture, modelling, and solution design decisions.
  • Identify opportunities to improve models, processes, and delivery methodologies.

Technical Leadership

  • Provide technical guidance and mentorship to junior Data Scientists.
  • Conduct code reviews and support best-practice development standards.
  • Influence technical direction and solution approaches within project teams.
  • Promote knowledge sharing and continuous improvement across the team.

Stakeholder Engagement

  • Collaborate with engineers, product teams, and business stakeholders.
  • Present findings, insights, and recommendations clearly to both technical and non-technical audiences.
  • Support client-facing engagements through effective communication and problem-solving.

Requirements

Minimum Requirements

Qualifications

  • Bachelor's Degree in a STEM-related field (required).
  • Master's Degree or PhD in a relevant discipline (advantageous).

Experience

  • Minimum 3-5 years' experience in Data Science, Machine Learning, Artificial Intelligence, or a related field.
  • Demonstrated experience solving complex analytical or machine learning problems.
  • Experience contributing to solution design and technical decision-making.
  • Previous mentoring or leadership exposure within technical teams advantageous.

Technical Skills

  • Advanced Python programming skills.
  • Strong understanding of:

oMachine Learning

oStatistics

oData Science methodologies

oModel development and evaluation

  • Experience with:

oPandas

oNumPy

oScikit-learn

o PyTorch and/or TensorFlow

• Experience working within collaborative software development environments.

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