Overview At Sii Group Colombia, we’re looking for a Lead React Fullstack Developer to join one of our most strategic international projects. This role is ideal for someone who thrives in leading front-end architecture efforts while also being capable of integrating with modern backend services. You’ll be the technical front-end reference for the team and contribute to building scalable, high-performance applications using React and Java in a microservices environment. Responsibilities Lead the UI development effort and define the front-end architecture Design and develop scalable components using React Collaborate with backend engineers to integrate Java-based microservices Ensure code quality, performance, and maintainability across the stack Build and consume APIs efficiently, ensuring data consistency Guide and mentor junior developers, ensuring technical alignment Work closely with DevOps to ensure seamless deployment and automation Drive best practices in coding, testing, and system design Requirements 6+ years of professional software development experience Strong expertise in React and modern frontend architecture (70% focus) Solid experience with Java for backend development (30% focus) Experience building and consuming RESTful APIs Familiarity with microservices and event-driven architecture Hands-on experience with cloud platforms (AWS, Azure, GCP, etc.) Experience implementing CI/CD pipelines Proven experience leading small teams (up to 6 people) Upper-intermediate to advanced English (B2–C1 level) Seniority level Associate Employment type Full-time Job function Information Technology Industries IT Services and IT Consulting Referrals increase your chances of interviewing at SII Group Colombia by 2x Bogotá, D.C., Capital District, Colombia #J-18808-Ljbffr