Security Engineer – AI Detection & Response

absa; Randburg; On-site; ZAR 900,000 - 1,300,000; Full time

Job summary

Absa Bank Limited is seeking a Security Engineer focused on AI Security to secure enterprise AI/ML environments, including LLMs, RAG, MCP and AI gateways. You will design secure AI architectures, define standards, and drive AI security controls across cloud, hybrid, and on‑premises platforms.

You will develop AI threat detection, incident response playbooks, and threat hunting programs, while collaborating with security, AI, and engineering teams to enable secure innovation within the

Qualifications

• Bachelor's degree in a technology discipline with emphasis on security.
• 1+ year in Cyber Security or related field with focus on AI security.
• Strong knowledge of AI/ML security principles, threats, and controls.

Responsibilities

• Design secure AI and ML architectures and AI security standards.
• Develop AI threat detection use cases and monitoring strategies.
• Engineer detections in SIEM, XDR, and EDR; investigate AI incidents.
• Secure MCP ecosystems, AI Gateways, and related AI infrastructure.
• Perform AI threat modeling and security reviews of AI applications.
• Develop AI incident response playbooks and threat hunting programs.

Skills

Cyber Security

Threat Hunting

Threat Intelligence

Detection Engineering

Incident Response

AI Security Knowledge

Education

Bachelor's Degree (NQF 7) in Computer Science or related field

Job description

Empowering Africa’s tomorrow, together…one story at a time.

With over 100 years of rich history and strongly positioned as a local bank with regional and international expertise, a career with our family offers the opportunity to be part of this exciting growth journey, to reset our future and shape our destiny as a proudly African group.

Job Summary

To provide specialist advice & support in the development & implementation of IT security service delivery processes, methods and techniques enabling secure management & control of IT access, in alignment with governance requirements.

Job Description

The Security Engineer – with a focus in AI Security and AI Detection & Response (AIDR) is responsible for securing Absa's enterprise Artificial Intelligence (AI), Machine Learning (ML), Large Language Model (LLM), Agentic AI, Retrieval Augmented Generation (RAG), AI Gateway, and Model Context Protocol (MCP) environments.

The role combines Security Engineering practices, Security Architecture, Detection Engineering, Threat Hunting, Offensive Security, and Incident Response to protect AI systems from emerging cyber threats while enabling secure innovation across the organisation. It aims to enhance the banks capabilities in AI security controls, AI threat detection, AI red teaming, and AI platform security across cloud, hybrid, and on-premises environments.

Key Accountabilities

AI Security Architecture

• Design secure AI and ML architectures.
• Define AI security standards and reference architectures.
• Perform AI threat modeling exercises.
• Conduct security reviews of AI applications and platforms.
• Establish AI security controls across the AI lifecycle.
• Secure agentic AI systems and autonomous workflows.
• Assess security risks associated with AI adoption initiatives.

AI Detection & Response (AIDR)

• Develop AI-specific threat detection use cases.
• Create monitoring strategies for AI environments.
• Engineer detections within SIEM, XDR, and EDR platforms.
• Investigate AI-related security incidents.
• Develop AI incident response playbooks.
• Perform AI-focused threat hunting activities.
• Establish AI attack simulation and validation programs.

AI Infrastructure Security

Secure enterprise AI ecosystems including:

• Large Language Models (LLMs)
• Agentic AI Platforms
• AI Gateways
• AI Proxies
• MCP Servers
• MCP Clients
• AI Agents
• Vector Databases
• RAG Architectures
• Model Serving Platforms

Model Context Protocol (MCP) Security

Develop and implement security controls for MCP ecosystems.

• MCP architecture security reviews
• Security assessment of MCP servers and connectors
• Validation of trust boundaries between agents and tools
• Security testing of MCP integrations
• Monitoring MCP activity and tool execution
• Designing secure MCP deployment patterns
• Developing MCP hardening standards

AI Gateway Security

Implement and manage security controls for enterprise AI gateways.

• AI traffic inspection
• Prompt inspection and filtering
• Content moderation
• Data Loss Prevention (DLP)
• Access governance
• Rate limiting
• API protection
• Model routing controls.

Detection Engineering

Develop detections for:

AI Threats

• Prompt Injection
• Jailbreak Attempts
• Data Exfiltration
• Model Abuse
• Token Abuse
• AI Resource Exhaustion

MCP Threats

• Unauthorised Tool Registration
• Suspicious Tool Invocation
• Privilege Escalation
• Connector Abuse
• Unauthorised Agent Activity

Agentic AI Threats

• Unexpected Tool Usage
• Autonomous Malicious Actions
• Unauthorised External Communications
• Excessive Permissions

Gateway Threats

• Prompt Filtering Bypass
• DLP Violations
• Sensitive Data Exposure
• Unauthorised AI Usage

Experience Required

• Bachelor's Degree (NQF 7) in Computer Science, Engineering (Electrical, Electronic, Mechanical), Mathematics, Physics, Information Security, or a related technology discipline.
• Minimum 1 year relevant experience in Cyber Security, Information Security, Security Engineering, Threat Intelligence, Threat Hunting, Detection Engineering, Incident Response, or related technology disciplines.
• Strong demonstratable knowledge of Artificial Intelligence (AI), Machine Learning (ML), Large Language Models (LLMs), Agentic AI, and Retrieval Augmented Generation (RAG) technologies and enterprise AI use cases.
• Strong demonstratable understanding of AI security principles, threats, and controls, including adversarial machine learning, prompt injection, model abuse, data protection, and secure AI deployment practices.
• Strong demonstratable understanding of enterprise AI platforms and architectures, including AI Gateways, AI Agents, Vector Databases, Model Context Protocol (MCP), and Model Serving Platforms.

Education

Bachelor`s Degrees and Advanced Diplomas: Physical, Mathematical, Computer and Life Sciences (Required)

Absa Bank Limited is an equal opportunity, affirmative action employer. In compliance with the Employment Equity Act 55 of 1998, preference will be given to suitable candidates from designated groups whose appointments will contribute towards achievement of equitable demographic representation of our workforce profile and add to the diversity of the Bank.

Absa Bank Limited reserves the right not to make an appointment to the post as advertised