Java Developer (senior)
Summary
Senior full-stack Java developer at Khonology, a digital services and technology engineering firm in Johannesburg, building enterprise systems: Java back-end services and REST APIs, React front-ends, SQL/NoSQL databases, and CI/CD deployments to cloud platforms like AWS/Azure, while leading technical design and mentoring engineers.
Khonology is a digital services and technology engineering company. Our teams build modern, scalable, and resilient solutions that enable our clients to operate, innovate, and grow. The Senior Java Developer plays a critical role in delivering complex enterprise systems. This role spans the full technology stack combining deep expertise in back-end Java development with strong capability across front-end frameworks, APIs, integrations, cloud services, and modern engineering practices. Senior developers at Khonology are expected not only to build high-quality software but also to guide solution design, lead technical decision-making, mentor engineering teams, and ensure that systems are robust, secure, and built for scale.
Responsibilities Build robust back-end services and APIs using Java, or similar technologies. Develop and maintain responsive web applications using modern front-end frameworks (e.g. React). Design and manage relational and No SQL databases (e.g., Postgre SQL, My SQL). Collaborate with cross-functional teams to define, design, and ship new features. Write clean, maintainable, and testable code. Implement CI/CD pipelines and deploy applications to cloud platforms (e.g., AWS, Azure). Troubleshoot, debug, and upgrade existing systems. Stay up to date with emerging technologies and industry trends. Required Skills & Experience 8 years+ Experience Proven experience as a Full Stack Developer or similar role. Proficiency in front-end languages (HTML, CSS, Java Script) and frameworks. Strong back-end development skills with experience in RESTful APIs