# Senior Software Engineer (AI)
**Company:** [Onos Health](https://hotfix.jobs/companies/onos-health)
**Location:** San Francisco, CA
**Salary:** $180K-$240K
**Experience:** 4+ years
**Skills:** Python, Django, AWS, Postgres, LLMs, Ocr, Document Ai, MLOps, Celery, Docker
**Posted:** 2026-05-20
> Experienced AI/ML engineer building and deploying LLM/NLU systems to extract and evaluate clinical data from medical documents for healthcare payers. Focus on reliable, accurate outputs and seamless integration with backend platforms.
## Job Description
## What you'll be doing at Onos
- Develop LLM/NLU systems to process and extract meaningful information from clinical notes and medical documents, classify patients according to level-of-care guidelines, and make accurate recommendations
- Own and evolve our LLM evaluation harness, regression gates, and observability to ensure our systems catch accuracy regressions before they reach payers and prove the platform's reliability over time
- Extract structured data from visually complex clinical documents, including scanned charts, tables, and graphs using a mix of OCR, multimodal models, and classical ML
- Collaborate with backend engineers to integrate AI/ML capabilities seamlessly into the Onos platform

## Technical Challenges
- Build and operationalize AI/data pipelines to analyze medical records to streamline clinical assessments and healthcare quality reviews
- Benchmark and stress-test LLM systems so evidence extraction and level-of-care classification stay accurate and reliable as criteria, documents, and models change
- Develop and optimize a system that ingests complex medical standards of care documents and evaluates provider adherence to guidelines
- Design explainable AI solutions that provide transparency into model decisions for healthcare professionals

## Tech Stack
- **Infrastructure/Systems**: AWS (ECS, Bedrock, Cognito, etc.), Docker, Github Actions
- **Languages/Frameworks**: Python, Django, Celery, django-ninja, django-tenants
- **Database/Storage**: PostgreSQL (AWS RDS), S3
- **Development Tools**: Github, Jira, CoderabbitAI, Tusk, Claude

## What we're looking for
- 4+ years experience building and deploying applications in production in a backend engineering / data engineering capacity
- Relevant experience with developing LLM-based systems for ingesting and evaluating unstructured records for industry-specific use cases and integrating them with user-facing features
- Experience with document AI, OCR, or extracting data from visual/scanned content (charts, graphs, tables)
- Deep understanding of the limitations of using LLMs and the best practices for using them for reliable, consistent, and accurate outputs
- Customer obsessed and motivated to build best-in-class models for behavioral health clinical assessments in the healthcare space
- A collaborative team player with a focus on delivering measurable results

## Bonus points if you have
- Specifically worked with medical records to evaluate whether a patient’s history meets criteria for evaluations or assessments (e.g., claims authorization or other types of evaluations)
- Experience wearing multiple hats as a generalist backend engineer
- Experience working with data pipelines and Python and related data science/ML libraries
- Significant experience working with healthcare data and with HIPAA best practices
- Knowledge of modern LLM and ML infrastructure and MLOps best practices

## 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
**Apply:** https://hotfix.jobs/jobs/senior-software-engineer-ai-at-onos-health-b2089819-c5b7-41e6-91e1-ad192b2d58ac
**Canonical:** https://hotfix.jobs/jobs/senior-software-engineer-ai-at-onos-health-b2089819-c5b7-41e6-91e1-ad192b2d58ac