Backend Engineer

Help Build the Future of Healthcare AI Infinitus is AI communications in service of patients. Healthcare is inherently complex and siloed. We’re pioneering agentic communications to connect the entire system — any stakeholder, any channel, inbound and out. The result is intelligent care that reduces patient anxiety, increases speed to treatment, and enables teams to scale impact without stretching resources. Our system combines industry-leading safety guardrails with the largest dynamic knowledge graph built on millions of real-world interactions. It’s why 44% of the healthcare Fortune 50 trusts Infinitus to turn fragmented touchpoints into seamless care for better patient outcomes. The Mission At Infinitus, our mission is simple: create time for healthcare by making access, adherence, and affordability easier than ever. We’ve automated over 7 million calls and 100M+ minutes of conversation — saving millions of hours for patients and providers. Backed by over $100M from top investors including Google Ventures, Kleiner Perkins, Andreessen Horowitz, and Coatue, we’re a team that challenges the status quo and moves fast at the intersection of AI and healthcare. Infinitus was recently named to Fast Company's World's Most Innovative Companies and Business Insider’s top startups in healthcare. Your Role We are looking for a Backend Software Engineer to help us design, build, and scale the core of our digital health platform. You’ll work on expanding the capabilities of Eva, our AI-powered health assistant, and build systems that automate and simplify healthcare administration at scale. This role blends hands-on backend development with opportunities to influence technical direction and mentor teammates. Your Impact - Design, build, and maintain scalable backend services and APIs that power Eva’s healthcare interactions. - Collaborate closely with Data Science, Frontend, and Infrastructure teams to bring AI and NLP solutions into production. - Make technical tradeoffs to balance impact, user experience, and long-term scalability. - Champion engineering best practices, including reducing technical debt and improving reliability. - Mentor junior engineers and contribute to growing a high-performing engineering culture. - Partner with product managers, designers, and analysts to deeply understand user needs and deliver impactful solutions. - Contribute to both short- and long-term technical roadmaps. Your Skillset - 7-10+ years of backend engineering experience, with a track record of shipping and scaling production systems. - Strong expertise in backend languages (e.g., Go, Python, Java, C++). - Hands-on experience with cloud services (AWS, GCP) and modern DevOps practices. - Solid foundation in designing APIs and integrating backend services. - Deep understanding of database technologies (SQL and NoSQL), with experience optimizing performance. - Curiosity about ML/NLP concepts and interest in applying them at scale. - Strong cross-functional communication skills and experience collaborating in multidisciplinary teams. - Entrepreneurial mindset: thrive in ambiguity, take initiative, and drive projects end to end. Why You’ll Love It Here Please Note: the following benefits are for salaried employees - Hybrid work (SF office Mon/Tues/Thurs) + catered lunches (Bay Area Positions only) - Competitive salary, equity, and 401(k) - Wellness stipend & great benefits (medical, dental, vision) - Generous PTO & parental leave - Bi-annual offsites & a collaborative, mission-driven culture What to Expect in the Interview Process - Apply & meet our recruiting team - Virtual interviews to showcase your skills - Final onsite loop to meet the team and get to know us better - Chat with our CEO Curious to Learn More? - Read our Blog https://www.infinitus.ai/blog/ to hear from Infinauts about what we’re building - Discover how our company values (CODES https://www.infinitus.ai/careers/) guide us - Follow our CEO, Ankit Jain https://www.linkedin.com/in/jain