**About KIS Solutions LLC** KIS Solutions is a fast\-growing provider of custom software development and technology consulting. We help Fortune 500 organizations streamline operations, integrate systems, and build tailored digital tools to solve real business problems. We are seeking a skilled and motivated professional to join our team as a Full Stack Developer, mainly working with Java Spring Boot and React. You will be involved in a variety of tasks using modern technologies across the backend and frontend. \*Opportunity available only for Latin American residents\* **Responsibilities:** \- Participate in the development and maintenance of features across the stack; \- Collaborate directly with the client and internal team members to understand requirements and propose solutions; \- Develop and maintain systems using: \- React for frontend development; \- PostgreSQL for database operations; \- Java (Spring Boot) for backend services; \- Contribute to a dynamic, fast\-paced environment as the project scales; \- Ensure code quality through testing and documentation; \- Be proactive in identifying and implementing improvements. **Requirements:** \- Solid knowledge and experience with React; \- Practical experience with PostgreSQL (queries, inserts, updates); \- Proven experience with Java Spring Boot; \- Strong communication skills to interact with the client; \- Ability to work collaboratively as part of a team; \- Advanced English (daily contact with international clients and teams). **Desirables:** \- Experience with unit testing (e.g., JUnit, Mockito); \- Familiarity with the Spring Batch framework; \- Knowledge of Kafka integrations; \- Ability to work independently with the client; \- Experience in writing and maintaining technical documentation. **Additional Information:** \- Flexible work environment; \- Periodic feedback aiming at people development and career growth; \- International travel opportunities; \- Remote work. Job Type: Contract Experience: * software development: 2 years (Required) * Java Spring Boot: 1 year (Required) * React: 1 year (Required) Language: * English (Required)