Fullstack Developer (Java & React)

Job Description This is a remote position. At KIS, we are always looking for talented individuals to join our team for future opportunities. If you are a Full Stack and interested in working on innovative projects with one of our global clients, sign up for our Talent Pool! Job Activities Develop, maintain, and enhance full stack applications, delivering complete features from technical design to deployment. Build and evolve backend systems using Java (Spring Boot) Develop and maintain modern frontend applications using React or similar frontend frameworks. Troubleshoot bugs, investigate issues, and deliver fixes efficiently and reliably. Fully understand business and technical requirements, proactively questioning what is unclear. Translate business requirements into technical solutions and implementation plans. Design and implement REST or GraphQL APIs, integrating multiple data sources. Ensure high-quality deliveries by proactively testing, validating, and refactoring code. Participate in the full software development lifecycle, including design, development, testing, deployment, and maintenance. Monitor application performance and contribute to production support and continuous improvement. Collaborate closely with team members, contributing to task planning, estimation, and prioritization. Communicate effectively with clients, actively participating in meetings and technical discussions. Identify risks, competing priorities, or delivery issues early and escalate appropriately. Contribute to improving development processes, architecture, and team practices. Support and mentor other team members when needed, helping ensure overall team delivery. Requirements Experience as a Full Stack Developer, delivering features across frontend, backend, and database layers. Strong experience in Java (Spring Boot). Strong experience with React or similar frontend frameworks. Solid understanding of SQL and relational databases for data manipulation and analysis. Knowledge of software design principles, including SOLID and clean architecture concepts. Experience designing and integrating REST and/or GraphQL APIs. Strong problem-solving skills, including cross-layer debugging and root cause analysis. Experience implementing secure authentication and authorization and mitigating common vulnerabilities (XSS, SQL Injection, CSRF). Ability to deliver less complex tasks independently and more complex tasks with guidance. Strong sense of ownership, responsibility, and accountability for delivery quality and timelines. Good organization and time management skills, with the ability to estimate work and meet deadlines. Good English communication skills to collaborate with international clients. Team-oriented mindset, open to feedback and continuous learning. Must be based in Latin America.