Senior Ai Engineer; Python, Langchain

We are looking for a Senior AI Engineer with 6+ years of software engineering experience to take a leading role in delivering advanced AI solutions. This hybrid position blends deep software engineering expertise with specialised knowledge of AI systems and software architecture
.

You will be responsible for designing and building autonomous agents
, sophisticated reasoning pipelines
, and Retrieval-Augmented Generation (RAG) solutions using Lang Chain and modern large-language-model frameworks. The role requires hands-on technical leadership, from solution design through to production deployment.

Responsibilities:

• Architect, build, and deploy production-grade AI systems
  , including autonomous agents, multi-agent workflows, and RAG-based solutions using Lang Chain and modern LLM frameworks.
• Design and optimize vector search architectures
  , implementing efficient indexing, retrieval, and relevance strategies across enterprise-scale datasets.
• Lead decisions around LLM usage
  , including fine-tuning versus RAG trade-offs, context window management, and inference cost, latency, and performance optimization.
• Develop and maintain high-performance backend services and APIs using Python and FastAPI/Flask, applying asynchronous patterns and scalable system design principles.
• Architect and operate cloud-native AI platforms on AWS or Azure, leveraging managed AI services, containerized workloads, and serverless components.
• Implement and manage containerization and orchestration using Docker and Kubernetes/ECS, supported by Infrastructure as Code practices.
• Design robust data architectures
  , including PostgreSQL schema design, query optimization, and integration with No
  
  SQL systems where appropriate.
• Apply advanced software engineering best practices
  , including microservices and event-driven architectures, SOLID principles, and system design patterns.
• Collaborate with frontend teams to guide the integration of AI capabilities into modern web applications.
• Establish and enforce engineering quality standards
  , including testing strategies, code reviews, CI/CD pipelines, and operational reliability.
• Provide technical leadership and mentorship
  , contributing to architectural decisions, delivery excellence, and continuous improvement across engineering teams.

Qualifications &

Experience:

• Degree in Computer Science, Engineering, or a related IT field
• 6+ years of general software engineering experience
• Proven experience or portfolio demonstrating LLM-based applications or AI agents
• Demonstrated technical leadership in delivering complex software projects.

The Reference Number
for this position is
NG60986
which is a Permanent Hybrid position based in Pretoria offering a cost to company of up to R1mil CTC negotiable on experience and ability.