In this department, our client builds and operates the platforms behind: Mobile connectivity services Airtime, data and rewards journeys Smartphone sales and digital enablement All of this is deeply integrated into their broader digital ecosystem, allowing them to continuously launch new products as the MVNO grows. The Role As a Senior Back End Software Engineer, youll play a key role in a cross functional product team, owning the full software development lifecycle from design and build, through deployment, to operating systems in production. Youll help design and deliver scalable, resilient back-end systems that prioritise performance, reliability and future growth, while also guiding and supporting other engineers. What Youll Be Doing Design, build, test and operate scalable, cloud native systems on AWS Architect modern, reusable services aligned to AWS Well Architected principles Build and maintain event driven and microservices based architectures Deliver simple, elegant solutions powering airtime, data, rewards and smartphone journeys Optimise databases and APIs for performance, reliability and scale Collaborate closely with product, QA and platform teams Provide technical guidance and mentorship to other engineers Help shape new connectivity products used by millions of clients Role Requirements: Minimum: Grade 12 National Certificate / Vocational Preferred: Relevant tertiary qualification in Information Technology 6+ years experience in back-end software development Strong experience delivering production systems end to end Solid understanding of: Software Development Lifecycle (SDLC) RESTful API design and integration Advanced programming concepts, algorithms and data structures Design patterns and testing practices SQL database design and query optimisation Cloud platforms (AWS preferred) Microservices and event driven architectures Containerisation and deployment (e.g. Kubernetes) Tech Stack (Core) Java Spring Boot AWS Kafka PostgreSQL Skills Analytical Skills Attention to Detail Communications Skills Interpersonal & Relationship management Skills Problem solving skills Should you not receive a response from us within one week of your application, your application has unfortunately not been successful.