Full Stack Engineer at DeARX Services (Pty) Ltd

• We are looking for a highly technical Senior Full Stack Software Engineer to join a large-scale financial technology environment working on business-critical, high-volume systems.
• This is not a traditional CRUD development role. We need an engineer who understands systems end-to-end — including applications, APIs, databases, messaging, distributed services, observability and production operations.

What You'll Be Doing

• Design, develop and maintain scalable, resilient distributed applications
• Work across backend and frontend development
• Develop and integrate REST APIs and microservices
• Work with event-driven architectures and messaging platforms
• Design and optimise databases, queries and application logic
• Troubleshoot complex production issues and perform root-cause analysis
• Implement effective monitoring, logging, alerting and observability
• Build and optimise systems handling high transaction volumes
• Contribute to architectural and technical design decisions
• Develop clean, maintainable and reusable code
• Implement automated testing and CI/CD practices
• Work with cloud and containerised environments
• Participate in code reviews and engineering standards
• Mentor developers and help raise the team's technical capability

Technical Experience
We are looking for strong experience in:

• 6 - 10 years' commercial software development
• Full-stack software development
• Java / JVM technologies — highly preferred
• Spring Boot or equivalent backend frameworks
• Distributed systems and microservice architecture
• REST APIs and system integration
• Event-driven architecture and messaging
• Kafka — highly advantageous
• Strong SQL and relational database knowledge, including query optimisation
• Production troubleshooting and debugging
• Observability, monitoring, logging and alerting
• AWS and/or Azure
• Docker and Kubernetes
• CI/CD and automated testing
• Software design principles, design patterns and clean architecture
• Experience with other JVM technologies such as Scala will also be considered.
• Strong .NET engineers will be considered where they can demonstrate genuine experience with distributed systems, messaging, cloud, APIs, databases and large-scale production environments.

What We're Looking For
The right person will:

• Think beyond individual applications and understand systems end-to-end
• Understand how applications, APIs, messaging, databases and infrastructure interact
• Have experience working on real production systems at scale
• Be able to diagnose complex technical problems independently
• Understand scalability, resilience, failure handling and performance
• Be comfortable going deep into the technical detail
• Be able to explain why a technical solution works, not just which technology was used
• Take ownership of system reliability and production performance
• Be comfortable mentoring and supporting other engineers
• Communicate technical concepts clearly with both technical and business stakeholders
• Banking / Payments Experience
• Experience in banking, payments, fintech or other high-volume financial environments is highly advantageous.
• However, financial-services experience is not mandatory.
• We will consider engineers from other environments where they have worked on large-scale, distributed, transaction-heavy or business-critical systems.

This Role Will Suit You If...

• You enjoy understanding how the whole system works, not just writing code for an individual application.