Lead Engineer (Backend)
About Onos Health
Onos Health’s mission is simple but ambitious: ensure every healthcare dollar goes toward delivering the highest quality care. Today, 30% of total U.S. healthcare spending is wasted due to ineffective care and administrative burden caused by misalignment between providers and payers.
Onos is addressing this by building the largest AI-driven healthcare data platform. Our models enables payers to make faster, more accurate decisions across their populations. By guiding members to the right care, Onos is channeling more dollars to high-quality care that drives outcomes while making healthcare more affordable.
Onos recently closed a $6M Seed round with top-tier investors and is already working with some of the nation’s largest health plans, signing its first national plan just months after launch.
Come join a category-defining company and help reimagine healthcare for the better.
Why Onos?
Meaningful impact: Help fix what is fundamentally broken in healthcare
Direct collaboration: Work alongside experienced founders with deep healthcare and data expertise
Culture: Join a high-performing, transparent, and results-oriented team
Ownership: Significant responsibility and autonomy from day one
Opportunity: Play a pivotal role in building a fast-growing, category-defining healthcare AI company
The Role
We're seeking an experienced and highly capable technical leader (Tech Lead/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 2-3 times a week.
What you'll be doing at Onos:
Leading the integration and rollout of the Onos platform for new enterprise customers to provide actionable insights and recommendations to health plan administrators
End-to-end development of new features and functionality for the Onos platform, including requirements gathering, scoping, architecting, implementation and testing to deliver timely and high quality outcomes
Build and scale data pipelines for health records, provider directories, and claims processing
Establish engineering best practices and technical foundations for future team growth
Shape our technical roadmap, make key architectural decisions, and influence the company's product strategy
Technical 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 requirements
Tech 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, Cursor
What 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 backend web development practices
A collaborative team player with an eye for the details
Bonus 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 projects
Benefits and Perks
Flexible hybrid arrangement: 2-3 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 setup
We 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.