Sr. Full-Stack Engineer (Node/NestJS React/Next.js)

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. We’re a funded, mission-driven team building real products for real users. This is an opportunity to work on meaningful healthcare technology with a team that values ownership, speed, and high standards. The Role We’re hiring an experienced full-stack engineer who will be responsible for designing, developing, testing, and maintaining our web applications using Node.js, NestJS, React, and Next.js. You will collaborate closely with cross-functional teams to deliver high-quality products that meet the needs of our users. Key Responsibilities: • Design, develop, test, and maintain full-stack applications using Node.js, NestJS, React, and Next.js. • Collaborate with designers, product managers, and other engineers to deliver high-quality products. • Participate in code reviews and contribute to the improvement of the overall codebase. • Troubleshoot and debug issues in our web applications. • Stay up-to-date with industry trends and best practices in full-stack development. Requirements: • 5+ years of experience as a full-stack engineer using Node.js, NestJS, React, and Next.js. • Strong understanding of JavaScript, HTML/CSS, and RESTful APIs. • Experience with state management libraries such as Redux or MobX. • Familiarity with containerization using Docker. • Knowledge of cloud-based services such as AWS or Google Cloud Platform. • Excellent problem-solving skills and attention to detail. • Strong communication and collaboration skills. Benefits: • Competitive salary and benefits package. • Opportunity to work on meaningful healthcare technology that can make a real difference in people’s lives. • Collaborative and dynamic work environment with a team of talented engineers. • Professional development opportunities, including training and conference attendance. • Flexible working hours and remote work options.