**ISSCA (International Society for Stem Cell Application)** is a global leader in regenerative medicine education, certification, and clinical innovation \- with operations in 30\+ countries and over 15 years of proven excellence. We are expanding our digital infrastructure to scale global visibility and online learning ecosystems. We seek an **on\-site Senior Web Developer \& SEO Manager** for immediate full\-time placement in **Cancún, Mexico**, joining our international group of companies. You will lead the **entire digital ecosystem** \- overseeing site development, multilingual architecture, global SEO growth, and data\-driven performance tracking. You will also coordinate with marketing and media teams across **Global Stem Cells Group’s ecosystem**, ensuring brand consistency between **ISSCA** and other affiliated entities. **Non\-Negotiable Requirements** * Full\-time exclusive commitment \- no side clients, contracts, or competing obligations * Relocate to or currently reside in **Cancún, Mexico, on\-site office position** * Full ownership across all web domains, with proven experience **hiring and directing external developers** during peak periods * **Advanced SEO expertise** with measurable results in international expansion * Weekend availability during scheduled events (\~1 per month on average, 15/year) **Technical Requirements** * 5\+ years of web development (HTML5, CSS3, JavaScript, PHP) \- **WordPress** is our main CMS * Demonstrated SEO success expanding organic reach into **international markets** (Asia, Europe, Middle East) * Proven ability to: ✓ Increase international organic traffic and keyword visibility across 5 regional domains ✓ Reduce bounce rates and optimize funnel conversions for global event pages ✓ Lead technical SEO audits, schema implementation, and link acquisition campaigns * Mastery of analytics tools (**Google Analytics, Search Console, SEMrush/Ahrefs**) * Proficiency in **Google Tag Manager** and **Conversions API** tracking * Experience managing **payment gateways**, cart/checkout optimization, and **conversion rate optimization (CRO)** * CDN implementation and site performance optimization * Experience creating high\-converting **marketing/sales landing pages** * **Mobile\-first, responsive design** execution * Multi\-language website architecture and **hreflang** best practices **Operational Requirements** * Autonomous problem\-solver requiring minimal supervision * Manage website infrastructure during high\-traffic international event periods * Hire, direct, and manage freelance developers or vendors during workload peaks * Work directly with the leadership team to align digital growth strategies with business objectives * Understanding of medical/scientific content and **regenerative medicine industry** is a strong plus * Project management tools experience Asana (our main one), Trello, Notion, Clickup etc. **Language** * **Bilingual English/Spanish** preferred \- English fluency is mandatory **Compensation** Competitive package \- commensurate with experience and qualifications. Submit **CV, portfolio, SEO case studies, and examples of management experience.** Tipo de puesto: Tiempo completo Lugar de trabajo: Empleo presencial