Founding Engineer, Applied Research at Backbone Systems | San Francisco, California, US | Rezi

Founding Engineer, Applied Research at Backbone Systems

Founding Engineer, Applied Research

Backbone Systems · San Francisco, California, US

2 months ago

Founding Engineer, Applied Research

Backbone Systems · San Francisco, California, US

2 months ago
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About the Role

Backbone is building the clinical AI layer for healthcare payments, aiming to reduce the $350B wasted annually on administrative work. This role involves solving applied research problems in clinical intelligence, focusing on improving core systems that process clinical and financial data to make accurate, defensible decisions.

Responsibilities

  • Build evals for clinical reasoning, chart understanding, claims review, authorization logic, denial analysis, appeal generation, and payer policy interpretation
  • Improve Backbone’s ability to read and reason over real clinical and financial data, with work across model behavior, prompting, fine-tuning, retrieval, structured reasoning, verification, and evaluation
  • Build and improve agentic browser-use and computer-use capabilities for payer portals and healthcare software
  • Translate product feedback from live provider and payer workflows into research problems, partnering with backend engineers to productionize research improvements

Requirements

  • New grad through ~5-6 years of experience, with experience with ML research, language models, NLP, evals, reinforcement learning, agentic systems, or model improvement
  • Clear evidence of technical depth through papers, projects, internships, open-source work, competitions, or production ML systems
  • Infrastructure or systems experience is a major plus
  • Excitement about building applied research systems where the output touches real workflows, real dollars, and real patient impact
  • Curiosity, rigor, and taste matter more than healthcare experience

Skills

  • ML research
  • language models
  • NLP
  • evals
  • reinforcement learning
  • agentic systems
  • model improvement
  • Infrastructure
  • systems experience

Location

  • Remote

Work Type

  • Full-time

Experience Level

  • New grad
  • Entry-level
  • Mid-level

Education Level

  • BS/MS in Math & CS

Benefits

  • Competitive compensation
  • Meaningful ownership

About the Company

  • Backbone is making clinical AI a reality for healthcare payments, tackling the $350B wasted annually on administrative tasks.
  • The company is backed by Andreessen Horowitz (a16z), Lightspeed, Hanabi, and industry leaders.
  • The founder/CEO, Manan Shah, has a strong background in ML infrastructure from Stanford and Kumo AI.
  • Backbone is experiencing rapid revenue growth and increasing customer demand.