About BiOptimizers BiOptimizers exist to help people go from baseline health to peak biological performance. We develop science-backed supplements and wellness tools that deliver measurable results. As a remote-first company, our globally distributed team focuses on clarity, autonomy, and operational excellence. Every role is designed to support the health and performance of both our customers and our organization. BiOptimizers is hiring an experienced Front-End Developer to provide temporary coverage for a key engineering role while our Front-End Lead is away for several months. This is a hands-on role focused on marketing-driven front-end development inside a custom PHP-based funnel builder platform, with additional ownership of task coordination, documentation, and cross-team collaboration. This role is a strong fit for a developer who is highly organized, proactive, and comfortable balancing technical implementation with project ownership in a fast-paced environment. You will work directly with marketing, design, and engineering teams to ship features, fix bugs, optimize performance, and support ongoing experimentation. Responsibilities * Build and maintain front-end features for the marketing team. * Work within a custom PHP-based funnel builder platform. * Develop responsive UI using HTML, JavaScript, and Tailwind CSS. * Assign and manage front-end development tasks and priorities. * Collaborate with marketing, design, and engineering teams. * Handle bug fixes, QA support, and production updates. * Improve website performance and page speed optimization. * Maintain technical documentation and implementation notes. * Support ongoing optimization and experimentation initiatives. Requirements Strong hands-on experience with: -HTML -JavaScript -Tailwind CSS -PHP-based front-end environments * Experience working on marketing websites, funnels, or landing pages. * Strong understanding of responsive design and cross-browser compatibility. * Experience optimizing Core Web Vitals and page speed performance. * Ability to work independently and manage competing priorities. * Strong communication and organizational skills. * Comfortable taking ownership of front-end initiatives end-to-end. Nice to Have * Shopify development experience, including themes, Liquid, and storefront customization. * Experience with A/B testing or CRO-focused development. * Experience working with analytics and tracking integrations. * Familiarity with Git workflows and agile ticket management systems.           WORK LOCATION This is a fully remote position. BiOptimizers has a globally distributed team and supports flexible work arrangements across time zones. COMPANY HOURS & COLLABORATION With team members across many countries and time zone differences of up to 16 hours, we’ve established a standard collaboration window from 9:00 AM – 5:00 PM EST. This is not a required work schedule, but a shared time frame for meetings and team syncs. At BiOptimizers, we support flexibility — team members are encouraged to work the hours that best suit them, as long as they: * Attend required meetings * Communicate effectively across time zones * Deliver work by agreed-upon deadlines EQUAL OPPORTUNITY STATEMENT BiOptimizers is committed to diversity and inclusion and is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, creed, gender, national origin, age, disability, veteran status, sexual orientation, gender identity, or any other basis protected by applicable law.