About Welle Welle is a next-generation proactive health platform helping people live healthier, longer, and better. We combine advanced diagnostics, personalized therapeutics, and adaptive coaching to deliver whole-health programs for individuals and organizations. This is an opportunity to work on meaningful healthcare technology with a team that values ownership, speed, and high standards. Full-Stack Developerwith strong production experience in Node.js/Nest JS, React/Next.js, and Java Script/Type Scriptto help accelerate product delivery and raise the quality bar across our platform. You'll own features end-to-end, contribute to technical decisions, and work closely with a distributed team to turn business needs into reliable, scalable software. We are not looking for a junior developer, a task-taker, or someone still learning the fundamentals on the job. Build and maintain production backend services using Node.js/Nest JS Own key parts of our React/Next.jsapplication Make strong ar...