Johannesburg: Systems Integration Engineer posted by Edgexec (Pty) Ltd

Design the connections that power modern financial systems. Take ownership of complex integrations that enable seamless, secure transactions at scale.

This role sits at the heart of a high-performing engineering environment, focused on building and maintaining robust integrations across internal platforms, payment systems, and third-party services. You will work across API-led and event-driven architectures, ensuring systems communicate efficiently, securely, and reliably in a fast-paced, production-critical environment.

You will contribute to the full integration lifecycle, from defining contracts and schemas to building middleware components and ensuring operational resilience. The environment demands strong problem-solving capability, attention to detail, and the ability to collaborate across technical and business teams to deliver stable, scalable solutions.

Our client is a leading financial services organisation with a strong presence across Africa, known for its focus on innovation, engineering excellence, and secure digital transformation within complex, regulated environments.

What Youll Do

• Design and implement secure integrations across APIs, payment platforms, and third-party systems
• Define integration contracts, schemas, mappings, and error handling models
• Build middleware services, connectors, and orchestration workflows
• Implement transformation logic across diverse data formats and systems
• Ensure resilience through retries, monitoring, reconciliation, and alerting
• Collaborate with security and platform teams on compliance and best practices
• Investigate incidents and drive root cause resolution and preventative improvements
• Support CI/CD pipelines and integration release processes

What You Bring

• Strong experience in API integration and contract-first design (OpenAPI, versioning)
• Solid understanding of messaging and enterprise integration patterns
• Knowledge of secure integration practices including OAuth2 concepts
• Experience troubleshooting distributed systems using logs, metrics, and traces
• Familiarity with CI/CD, Git workflows, and multi-team delivery environments
• 46+ years (Intermediate) or 710+ years (Senior) in integration engineering
• Degree or equivalent in Computer Science, Engineering, or related field
• Exposure to payments environments and security standards is advantageous

What Success Looks Like

• Reliable, scalable integrations that support critical business operations
• Clear, well-defined integration contracts enabling efficient team collaboration
• Reduced system failures through proactive monitoring and robust design
• Seamless releases supported by strong testing and automation practices
• Continuous improvement of integration frameworks and operational processes