Senior Web Application Developer - This role involves developing and maintaining features for web applications using React. Js, Node. Js, and JavaScript. The ideal candidate will have 5 to 10 years of IT experience, with a strong background in functional business analysis or support. Main Responsibilities:- Application Development & Maintenance (60%): Develop, maintain, and enhance features for web applications using React. Js, Node. Js, and JavaScript. - Design and implement RESTful APIs and microservices following best practices and security standards. - Optimize application performance, including database queries, caching strategies, and frontend rendering. - Implement responsive, accessible user interfaces supporting multiple languages (Spanish, Portuguese, English). - Integrate applications with enterprise systems and third-party services. Production Support & Incident Management (25%):- Provide Level 2/3 support for production applications. - Troubleshoot and resolve complex technical issues across the full application stack. - Perform root cause analysis and implement permanent fixes to prevent recurring incidents. - Monitor application health using APM tools and proactively address performance degradation. - Collaborate with business users to understand and resolve functional issues. Technical Modernization & Innovation (15%):- Implement security best practices including OWASP standards, secure coding, and vulnerability remediation. - Modernize batch processing workflows to event-driven architectures. - Contribute to technical debt reduction and architectural improvements. - Document technical designs, APIs, and operational procedures. Requirements:- Bachelor''s degree in Computer Science or related field. - Fluent in Portuguese and intermediate English (capable of speaking and writing). - Real-world experience using MS SQL Server (queries and triggers). - Manage project releases and support. - Assist users during the approval stage. - Incident management, assisting the L1 support team. - Monitor root cause fixes with L2 and L3 teams. - Follow up with users on ongoing incidents. Skills and Qualifications:Our ideal candidate will possess excellent communication and problem-solving skills, as well as the ability to work effectively in a fast-paced environment. What We Offer:A dynamic and challenging work environment, opportunities for career growth and development, and a competitive compensation package.