Who is Eleos Health? Today, more people than ever are speaking publicly about their mental health. Whether it's ourselves, our friends and family or even public figures, taking care of your behavioral health is no longer a taboo, it's vital, and it's only human. Eleos is on a mission to help deliver the world's most effective behavioral care through data, measurement, and personalization. Or simply put, we want to give clinicians the support they need to do the important work only they can do. What is the Opportunity? We are looking for a Senior Full Stack Engineer to join a high-impact, multi-disciplinary team building a customer-facing product trusted by health industry specialists. This team is solving complex technical challenges with a modern stack to power Eleos’ core growth engine. In this role you will collaborate closely with other R&D, Product, and Data teams. Who Are You? You are a seasoned Full Stack Engineer with deep expertise in the Frontend and a strong comfort level across the Backend. You are a builder at heart who thrives on end-to-end ownership- from dissecting existing codebases to architecting production-grade solutions from scratch. You navigate ambiguity with ease, seamlessly shift context between product features and infrastructure, and champion quality across Frontend, Backend, DevOps, and QA. What You’ll Do - Architect & Build: Design and develop high-quality, scalable, production-grade systems, ensuring exceptional performance, reliability, and maintainability. - Own E2E Lifecycle: Drive the entire development cycle from initial ideation to production- including architectural design, CI/CD deployment, and proactive live monitoring. - Elevate Engineering Standards: Actively participate in code reviews, mentor peers, and uphold best practices across the engineering organization. - Collaborate Cross-Functionally: Partner with Product, Data, and compliance stakeholders to translate complex clinical and business needs into elegant technical solutions. What You Bring: - 7+ years of hands-on software engineering experience with a strong, broad foundation in computer science principles (data structures, concurrency, and performance trade-offs). - Deep expertise in modern Frontend development, including solid mastery of React patterns, state management, and data modeling. - Proficiency in TypeScrip (or equivalent) and Python (or equivalent). - Hands-on experience with cloud-native, event-driven architectures. - Strong system design instincts with experience meeting real-time SLAs. - Solid understanding of cloud infrastructure best practices. - Product & Customer Sense: A healthy curiosity for why we build, ensuring technical decisions align with user needs. - Modern Tooling: Proficiency with AI-assisted coding tools to accelerate development velocity. - Education: BSc in Computer Science, Software Engineering, or equivalent practical experience. - Senior Backend Engineer – Compliance & Growth