Sandton: Senior Java Developer

Job Responsibilities Analyse user requirements; measure impact to current systems and define technical specifications for requirements. Design and develop applications by setting expectations and feature priorities throughout the development life cycle; determine design methodologies and tool sets; complete programming using languages and software products; design and conduct tests. Recommend system solutions by comparing advantages and disadvantages of development strategies. Integrate applications by designing database architecture and server scripting; study and establish connectivity with network systems, search engines, and information servers. Complete applications development by coordinating requirements, schedules, and activities; contribute to team meetings; troubleshoot development and production problems across multiple environments and operating platforms. Support users by developing documentation and assistance tools. Update job knowledge by researching new internet/intranet technologies and software products; participate in educational opportunities; read professional publications; maintain personal networks; participate in professional organizations. Enhance organization reputation by accepting ownership for accomplishing new and different requests; explore opportunities to add value to job accomplishments. Knowledge Degree in Computer Science or Information Technology Java 21 Spring Boot Spring Cloud Spring State Machine JPA Hibernate SQL (PostgreSQL, Hypersonic, etc.) NoSQL (MongoDB) JMS Artemis (ActiveMQ) Keycloak (OAuth2, OpenID Connect) REST (OpenAPI) WebSocket JSON / XML Docker / Docker-Compose Git / Jenkins (CI/CD) AWS SDKs (Email, SMS) Retail POS would be an advantage Linux and Windows OS Experience Minimum 8 years Java application development Certified Java Developer advantageous Minimum 6 months experience in a retail environment supporting POS software Minimum 3 years experience on Linux and Windows OS Technical Skills Analytical and conceptual skills Business and financial acumen Technical skills Organisational skills plan, measure, and execute Communication effective oral and written communication skills Administrative skills Behaviours / Attitudes Attention to detail Drive Dedication to customers Flexibility Problem analysis Quality of work Self-development Stress management