We are looking for a highly skilled Senior Full Stack Developer to join an hourly contract opportunity focused on building and maintaining an internal web-based system. This platform supports core company operations by managing employee data, one-on-one meetings, and timesheets. The ideal candidate thrives in self-managed environments, writes clean and scalable code, and has deep expertise in modern Java Script technologies. Location: Must reside and have work authorization in Latin America. Availability: Contract role with flexible schedule, estimated 10-15 hours per month. The Ideal Candidate Has: - 6+ years of experience as a Full Stack Developer or in similar roles. - Expertise in React with Type Script and UI component libraries like Material-UI (MUI). - Strong experience with styled-components for CSS-in-JS styling. - Backend development proficiency using , Express, and Type Script. - Experience with MongoDB and Mongoose for database modeling and data access. - Strong understanding of code linting and formatting using ESLint and Prettier. - Comfort handling date and time logic using - Background in developing internal tools or business management systems. - Self-starter who works independently and delivers high-quality results. Key Responsibilities: - Design and implement new features for the company’s internal platform to manage employees, one-on-one meetings, and timesheets. - Build modern, responsive user interfaces using React and MUI. - Develop robust backend services using , Express, and Type Script. - Model and manage application data using MongoDB and Mongoose. - Maintain code quality and consistency with ESLint and Prettier. - Collaborate in feature planning and provide technical input for internal tooling improvements. - Provide occasional support and ongoing maintenance for the platform. If you are interested in applying for this position, you can apply here: