Senior / Lead Full Stack Engineer (Next.js, AI, TypeScript)

Join Our Team Oowlish, one of Latin America's rapidly expanding software development companies, is seeking experienced technology professionals to enhance our diverse and vibrant team. As a valued member of Oowlish, you will collaborate with premier clients from the United States and Europe, contributing to pioneering digital solutions. Our commitment to creating a nurturing work environment is recognized by our certification as a Great Place to Work, where you will have opportunities for professional development, growth, and a chance to make a significant international impact. We offer the convenience of remote work, allowing you to craft a work-life balance that suits your personal and professional needs. We're looking for candidates who are passionate about technology, proficient in English, and excited to engage in remote collaboration for a worldwide presence. About the Role We are looking for a Senior Full Stack Engineer to help scale a mission-critical platform used by organizations across multiple sectors, including nonprofits, government, and regulated environments. This is a foundational role where you will take ownership across the full stack — from mobile to backend systems — and contribute directly to architecture, performance, and product evolution. You won’t just execute tickets; you will help shape how the platform grows and scales in production. You will work in a fast-paced, remote-first environment alongside product and engineering leadership, building real features used by real users. This role requires strong technical ownership, clear communication, and the ability to operate effectively in ambiguous situations. We are looking for engineers who move fast, think critically, and take responsibility for delivering high-quality solutions. Benefits & Perks: Home office; Competitive compensation based on experience; Career plans to allow for extensive growth in the company; International Projects; Oowlish English Program (Technical and Conversational); Oowlish Fitness with Total Pass; Games and Competitions; You can also apply here: Website: https://www.oowlish.com/work-with-us/ LinkedIn: https://www.linkedin.com/company/oowlish/jobs/ Instagram: https://www.instagram.com/oowlishtechnology/ country: BR all locations: [São Paulo Greater Fortaleza Rio de Janeiro, Rio de Janeiro, Brazil Florianópolis, Santa Catarina, Brazil Buenos Aires Province Bogota,D.C., Capital District Mexico City] commitment: Remote department: IT Operations location: São Paulo team: Javascript Engineer Key Responsibilities:: Design and build full-stack applications using Next.js, TypeScript, and modern web frameworks Develop and maintain APIs, authentication flows, and backend services Work with PostgreSQL, Supabase, and Redis to build scalable data systems Deploy and manage applications on Vercel, including environments and workflows Integrate AI/LLM capabilities (OpenAI, Anthropic) into product features Optimize performance, reliability, and user experience across the stack Implement monitoring, logging, and error tracking (e.g., Sentry) Collaborate on product decisions and translate ideas into working systems Take ownership of technical decisions and drive projects from concept to production Must have:: 5+ years of experience in full-stack software engineering Strong expertise with Next.js (App Router, Server Components, Server Actions) Advanced proficiency in TypeScript with end-to-end type safety Experience building production-ready APIs (auth, validation, error handling, rate limiting) Strong experience with PostgreSQL (schema design, indexing, optimization) Hands-on experience with Supabase (Auth, Realtime, Storage, etc.) Experience with Drizzle ORM or similar tools for schema and migrations Experience with Redis (Upstash or similar) for caching and performance Strong experience deploying and managing apps on Vercel Experience integrating AI/LLM APIs (OpenAI, Anthropic, or similar) Understanding of prompt engineering, streaming, structured outputs, and cost optimization Experience using AI coding tools (Claude, Codex, or similar) in daily workflows Nice to Have:: Experience with Google Maps APIs (Places, Geocoding, Maps JS) Experience building multi-tenant SaaS platforms Familiarity with agentic workflows, MCPs, or AI-driven automation systems Strong design/UX sensibility