Sandton: Senior Python Developer

Company Summary A leading JSE-listed financial services company is expanding its Group Data Science Team , a world-class division that partners across digital, clinical, wellness, and behavioural domains. The team collaborates globally and leverages modern big-data platforms to build scalable, future-focused solutions that drive innovation across the organisation. Role Summary The Senior Python Developer plays a critical role in the AI Enablement function, building and maintaining production-grade Python systems, managing ML pipelines, and ensuring enterprise-scale deployment of AI/ML models. You will contribute to technical standards, support team members, and help turn advanced AI into dependable business value. Requirements Essential: 5 years’ experience in Python development Strong grounding in software engineering principles (SOLID, unit testing, CI/CD, Git) Experience with ML engineering/MLOps tooling (MLflow, Kubeflow, etc.) Cloud platform experience (AWS, Azure, or GCP) Experience designing and maintaining ELT/ETL pipelines in distributed compute environments (Spark, Ray or similar) Ability to contribute to technical design, code reviews, and engineering best practices Advantageous: Experience with Vertex AI, BigQuery, Cloud Composer Exposure to large-scale data ecosystems and distributed systems Experience mentoring junior engineers or data scientists Responsibilities Build, optimize, and maintain high-performance Python systems for AI/ML delivery Participate in code reviews and contribute to engineering standards Design and manage ELT/ETL pipelines in large-scale MPP environments Support the full ML lifecycle: deployment, monitoring, and optimisation Implement automated monitoring, alerting, and model observability Provide guidance to junior developers and data scientists Collaborate with stakeholders to translate business needs into robust technical solutions