Senior Backend Engineer

About the role

Eleos Health builds a system of action for community-based care, helping behavioral health, hospice, home health and other care teams spend less time on paperwork and more time on patients. Its Polaris AI works alongside clinicians to detect issues early. The company is looking for a Senior Backend Engineer to join a multi-disciplinary team building a customer-facing product trusted by health industry specialists, collaborating closely with R&D, Product and Data teams.

Key responsibilities

• Design and build high-performance, production-grade backend systems and applicative services focused on reliability and maintainability.
• Take full end-to-end ownership of backend features, from architectural design and testing through shipping and active monitoring.
• Partner with Product Managers, Data Scientists and R&D teams to turn complex data pipelines and product needs into scalable technical solutions.
• Participate in rigorous code reviews, establish architectural best practices and mentor team members.

Required profile

• 7+ years of hands-on experience building, deploying and operating large-scale, production cloud systems.
• Solid computer science foundations: software design principles, concurrency, data structures and cost/performance trade-offs.
• Experience with cloud-native, event-driven architectures and modern databases (SQL, NoSQL or vector DBs).
• BSc in Computer Science, Software Engineering or equivalent practical experience.

Required skills

• Deep proficiency in Python (or an equivalent backend language).
• Comfortable across backend domains such as data pipelines, backend core logic and applicative microservices.
• Advantageous: experience with AI agents, LLM orchestration or modern AI frameworks; CI/CD pipelines and infrastructure-as-code; frontend frameworks such as React and TypeScript.