Oowlish, one of Latin America’s rapidly expanding software development companies, is seeking experienced technology professionals to enhance our diverse and vibrant team. We are looking for a Senior Full Stack Engineer to build and evolve patient-facing features across a healthcare platform. This is a high‑impact, product‑focused role where you will own features end‑to‑end—from API design through polished UI—while contributing to architectural decisions and mentoring other engineers. You will work on real‑world workflows such as appointment booking, insurance verification, and patient portal experiences, building scalable and reliable systems that directly impact patient outcomes. Key Responsibilities Build and maintain full‑stack features using Next.js, React, and NestJS Design and develop APIs with proper validation, error handling, and documentation Create responsive and accessible user interfaces using React, Tailwind CSS, and component libraries such as Radix UI Own complex workflows such as appointment scheduling, patient portals, and integrations Contribute to architecture decisions and establish best practices across the stack Mentor engineers and provide technical guidance through code reviews Integrate with third‑party systems (EHRs, payment providers, external APIs) Ensure system reliability through testing, monitoring, and performance optimization Maintain high standards for data handling, including HIPAA compliance Must Have 5 years of experience in full‑stack software engineering Strong proficiency in TypeScript across frontend and backend Solid experience with React (Next.js preferred) Experience with Node.js backend frameworks (NestJS, Express, or similar) Proficiency with PostgreSQL and ORMs (TypeORM or similar) Experience building and shipping complex user‑facing features end‑to‑end Experience with form handling (React Hook Form, Formik) and validation (Zod, Yup) Experience mentoring engineers or leading technical initiatives Strong understanding of building scalable, reliable systems Nice To Have Experience in healthcare environments (EHR integrations, HIPAA compliance) Experience with state management tools (Redux, React Query) Experience with component libraries (Radix UI, shadcn) Experience with background job systems (Bull, BullMQ, Sidekiq) Experience integrating with Salesforce or external enterprise systems Experience with feature flagging and gradual rollouts Familiarity with observability tools (Datadog, analytics platforms) Benefits & Perks Home office setup 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 J-18808-Ljbffr