Job Title: Senior Frontend Developer Location: Remote – Latin America (required to overlap some Spanish times for meetings) Type of Contract: Full-Time | Contractor Salary Range: $3,500 to $4,500 USD/month Language Requirements: Conversational English We are seeking a skilled Frontend Developer with strong experience in modern JavaScript and high‑converting UI development to join our growing team. You will play a key role in building responsive, user‑focused interfaces and integrating frontend solutions within PHP‑based environments. Your work will directly impact user engagement, performance optimization, and the scalability of our digital products. Key Responsibilities Develop modern, high‑converting user interfaces using best practices in design and frontend development Build and maintain frontend components for public websites and internal tools with full responsiveness across devices and browsers Integrate frontend solutions with PHP‑based environments, including templating engines such as Twig Conduct cross‑browser and cross‑device testing to ensure optimal performance and reliability Collaborate with Product, Marketing, Design, QA, and Operations teams to deliver high‑quality features Perform code reviews to ensure consistency, scalability, and adherence to coding standards Write clean, reusable, and efficient code following modern design patterns and best practices Must‑Have Qualifications 5+ years of professional experience in frontend development Strong proficiency in HTML5, CSS3, JavaScript (Vanilla and ES6+), jQuery, and Git Solid understanding of PHP environments and experience with templating systems like Twig Expertise in CSS methodologies (e.g., BEM ) and preprocessors such as SASS Experience using package managers such as Yarn or NPM Proven experience with A/B testing implementation and browser testing/debugging Strong analytical, problem‑solving, and independent work capabilities Experience leveraging AI tools (e.g., Cursor ), building AI‑driven solutions, and implementing AI agents Preferred Qualifications Experience working with React and/or TypeScript for scalable frontend architectures Previous experience mentoring junior developers and contributing to architectural decisions Entrepreneurial mindset with a proactive and flexible approach to problem‑solving #J-18808-Ljbffr