Principal Software Engineer

Joyous•Foster City, CA

5d•$150,000 - $350,000•Hybrid

About The Position

Join Joyous in our mission to revolutionize mental health care. As pioneers, we leverage very low dose (VLD) ketamine, AI-powered treatments, and advanced technologies to make mental health care effective, accessible, and affordable. With a team of nearly 120 professionals, we've transformed over 60,000 lives, leading a mental wellness revolution for a future where everyone can thrive. Working with us offers more than a job; it's a chance to be part of a life-saving mission that promotes health and compassion worldwide. You'll push mental health care boundaries with AI innovations, contributing to meaningful change and experiencing significant professional growth. At Joyous, we're creating lasting impacts, one life at a time. The Role: At Joyous, we’re transforming mental health care with AI-driven solutions, integrating personalized treatment plans, digital interventions, and real-time analytics to improve patient outcomes. As a Principal Software Engineer, you'll work directly with our CTO to lead the technical evolution of our AI-first platform, optimize existing infrastructure, and pioneer new systems to support our growing user base. If you're passionate about building AI-powered applications, scaling platforms, and creating real-world impact, this is your opportunity to shape the future of mental health tech—a space where innovation meets human connection. Why This Role Is Exciting AI-Driven Engineering – Work on cutting-edge AI agents, train LLMs, and develop predictive analytics that personalize patient care, optimize treatment plans, and engage users more effectively. Architect & Scale Platforms – Lead the technical evolution of our EHR/EMR system, AI-integrated tools, and video conferencing platform, ensuring seamless performance, security, and scalability. Tackle Complex Engineering Challenges – Optimize real-time data pipelines, cloud infrastructure, and AI-driven decision-making systems while working with a modern tech stack (Node.js, React.js, cloud computing, real-time analytics). Impact Lives at Scale – The software you build will enhance care for thousands of patients, making mental health treatment more personalized, accessible, and effective.

Requirements

Bachelor's or higher degree in Computer Science or related field.
10+ years of progressive experience, with a focus on full-stack development.
Strong proficiency in JavaScript, Node.js, React.js, and related technologies.
Demonstrated experience in building and scaling consumer-facing products within a startup environment.
Strong understanding of systems and architecture with a track record of building scalable applications from scratch.
Knowledge of professional software engineering best practices for the full software development lifecycle, including coding standards, code reviews, source control management, build processes, testing, and operations.
Excellent problem-solving skills and ability to communicate technical concepts effectively.
Familiarity with agile development methodologies and CI/CD

Responsibilities

Enhance & scale our existing patient portal and platform infrastructure to support rapid growth and new AI capabilities.
Architect & develop key components of our EHR/EMR system, AI-driven engagement tools, and video conferencing platform.
Design & implement AI-powered solutions that predict treatment efficacy, automate workflows, and improve patient engagement.
Optimize system performance, security, and scalability, ensuring a seamless experience for providers and patients.
Mentor engineers & drive best practices in AI integration, system architecture, and full-stack development.
Collaborate with cross-functional teams, including AI researchers, product managers, and clinicians, to build intelligent, user-friendly solutions.
Stay ahead of AI & cloud technologies, integrating the latest advancements to enhance our platform.