Senior Fullstack Engineer

Company: Onos Health
Location: San Francisco
Posted on: June 1, 2025

Job Description:

About Onos HealthOnos Health's mission is ambitious - ensure every healthcare dollar is spent on delivering the highest quality care. With up to 50 cents of every healthcare dollar wasted, Onos' AI-powered platform is positioned to drive meaningful change in the industry.Onos empowers health plans to ensure their members receive the highest quality care while reducing billions in wasteful and abusive spending. By identifying providers who deviate from an evidence-based care standard, we enable health plans to take action before their members' health outcomes are impacted.As one of our early engineering hires reporting directly to the CTO, you'll have the opportunity to shape our technical foundation from the ground up. You'll work alongside an experienced and passionate team to build sophisticated applications powered by AI/ML systems that directly impact healthcare outcomes.Why Onos?

• Meaningful impact: Help improve the quality of care while reducing healthcare costs
• Direct collaboration with experienced founders who have deep healthcare expertise
• Collaborative, transparent & results-oriented culture
• Significant ownership of technical decisions and architecture from day one
• Opportunity to help build and lead an engineering team from the ground upThe RoleWe're seeking a passionate technical leader (Senior/Manager level) who is motivated to meaningfully improve the way healthcare is administered in the United States. You'll take ownership of developing a significant part of the Onos platform through hands-on development and technical leadership. As an early team member, you'll work closely with our founding team while helping to build and lead a growing engineering team. This role is a hybrid role based in San Francisco, where you'll be expected to work at our office in person at least once a week.What you'll be doing at Onos:
  • Architecting and implementing major platform components to provide actionable insights and recommendations to health plan administrators
  • Build administrative workflow features and automations related to health records, provider directories, and claims processing
  • Establish engineering best practices and technical foundations for future team growth
  • Help shape our technical roadmap, make key architectural decisions, and influence the company's product and design strategyTechnical Challenges At Onos:
    • Develop an intelligent engine that ingests complex medical standards of care documents and evaluates provider adherence to guidelines
    • Design and implement sophisticated anomaly detection systems to identify fraudulent or abusive providers
    • Build ML pipelines to analyze handwritten clinical notes and automate recommendations for clinical reviewers
    • Scale our systems to process millions of healthcare records while maintaining strict security and compliance requirementsTech Stack:
      • At Onos, we work with a modern tech stack where you'll have the freedom to evaluate and adopt cutting-edge technologies as we scale.
      • Languages/Frameworks: Python, Django, Typescript, NextJS
      • Database/Storage: PostgreSQL (AWS RDS), S3
      • Infrastructure/Systems: AWS (ECS, Bedrock, etc.), Docker
      • Development Tools: Github, Jira, CursorWhat we're looking for:
        • 5+ years experience building software applications
        • Customer obsessed and motivated to make an impact in the healthcare space
        • Expertise with data engineering and full-stack web development practices
        • A collaborative team player with an eye for the detailsBonus points if you have:
          • Significant experience working with healthcare data and with HIPAA best practices
          • Worked with machine learning and large language models for end-user applications
          • Built and managed teams of engineers on major software projectsBenefits and Perks
            • Flexible hybrid arrangement: 1-2 days/week at San Francisco office (financial district), remote-first culture
            • Unlimited vacation policy
            • Paid parental leave
            • Medical, dental, and vision insurance
            • Pre-tax commuter benefits
            • 401(k)
            • Significant equity as an early employee
            • Direct mentorship from experienced founders
            • Ground-floor opportunity to help build a team and culture
            • Regular team events and offsites
            • Company-provided equipment and home office setupWe are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.
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Keywords: Onos Health, Castro Valley , Senior Fullstack Engineer, Engineering , San Francisco, California