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Research Engineer

assorthealthSan FranciscoEngineering
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Salary
$190K – $240K
Job type
Full-time
Work mode
Remote
Experience
Senior · 5+ yrs
Posted
24 Sept 2026
Status
Open · checked 7d ago

About this role

Research Engineer at Assort Health in San Francisco is an on-site role for building healthcare AI models and pipelines. This position suits an experienced machine learning professional who wants to develop production-grade conversational agents for the healthcare sector.

Role Overview

Assort Health seeks a Research Engineer in San Francisco to develop core conversational models and infrastructure for patient interactions. The organization recently raised a Series C funding round, reached a significant valuation, and operates as a recognized healthcare technology provider. The incoming engineer will own technical initiatives from concept through production deployment, focusing on reliability, task precision, and operational efficiency.

Key Responsibilities

Lead research and engineering tasks to enhance production conversational features, including instruction following, tool calling, retrieval, and memory systems.
Explore research questions in speech and audio while designing experiments to evaluate model behavior.
Construct and refine end-to-end models and pipelines optimized for quality, latency, and resource efficiency.
Evaluate and select appropriate model architectures based on specific task requirements, performance metrics, and cost.
Collaborate with product and platform teams to integrate novel models into live production environments.
Translate ambiguous research goals into structured, iterative roadmaps and milestones.
Train, fine-tune, validate, and develop models created in-house or by customers.
Establish evaluation benchmarks and protocols to measure model quality, robustness, and generalization.
Analyze datasets, model performance outputs, and failure modes to guide subsequent development cycles.

Requirements

Minimum of five years of total professional experience, with at least three years specifically focused on AI and machine learning engineering or research.
Demonstrated background in post-training and deploying large language models within production settings.
Proficiency in Python alongside modern machine learning tools for training, inference, evaluation, and data pipelines.
Documented history of moving research prototypes into reliable, measurable production outcomes.
Strong experimental methodology involving hypothesis generation, baseline establishment, evaluation design, and result interpretation.

Nice to Have

Prior background in utilizing and improving speech-to-text models, text-to-speech models, or duplex models.

Skills and Tools

Python
Large Language Models (LLMs)
Speech-to-Text (STT)
Text-to-Speech (TTS)
Duplex models
Machine learning training, evaluation, inference, and data pipelines

Salary and Benefits

Competitive compensation ranging from $190,000 to $240,000 with employee stock options
Top-tier health coverage including medical, dental, and vision insurance
Annual professional development budget for lifelong learning
Office setup stipend and monthly fitness stipend
Flexible paid time off and 401(k) retirement savings plan
Commuter benefits alongside daily meals, dinners, and snacks

About the Company

Assort Health builds continuous conversation AI agents for patient interactions across the healthcare industry. The company maintains a proprietary specialty dataset comprising millions of patient interactions, care protocols, and decision pathways. Recognized on the Forbes Cloud 100 and Enterprise Tech 30 lists, the company has expanded significantly following substantial venture funding and a valuation of $1.2 billion.

How to Apply

Candidates should review the full job description and submit applications directly on the official company careers page.

Skills and tech stack

PythonLLMsSTTTTSDuplex models

Questions candidates ask

What is the location of the Research Engineer role?

The position is based in San Francisco.

What is the salary range for this position?

The salary ranges from $190,000 to $240,000, and the package includes employee stock options.

How many years of experience are required?

Applicants need a minimum of 5 years of total professional experience, with at least 3 years in AI or machine learning engineering or research.

Is a PhD required to apply?

No, a PhD is not required. The company evaluates candidates based on demonstrated research ability and the quality of models, systems, and experiments built.

What programming language and tools are expected?

Fluency in Python and familiarity with modern machine learning tooling for training, evaluation, inference, and data pipelines are required.

Ready to apply?

The application is on the official assorthealth careers page.

Apply on company site