---
title: 'Senior ML Engineer at Truemed'
canonical: 'https://feeny.ai/job/senior-ml-engineer-truemed-remote-cv7j82ze36w0'
type: 'job'
last_seen: '2026-10-27'
---

# Senior ML Engineer at Truemed

- **Company:** Truemed
- **Location:** Remote
- **Employment:** full-time
- **Work type:** remote
- **Posted:** 2026-10-20
- **Last confirmed live:** 2026-10-27
- **Apply:** https://jobs.ashbyhq.com/truemed/63a1ae8d-25d6-46ee-b0c3-d1e607c6f411

## Job description

## The Role

Truemed enables health and wellness merchants to accept $150+ billion in HSA/FSA funds. At the center of that is determining whether products qualify for pretax spending - a classification problem with regulatory, financial, and clinical consequences at scale. We solve this using cutting-edge ML technologies that enable us to scale the number of merchants and product categories we can support while maintaining industry-leading accuracy requirements. As a Senior ML Engineer, you will run the experiments that decide how that system improves, and ship the winners to production.

## What you'll do

- Run the experiments that move classification accuracy: form a hypothesis, test it against labeled data, and ship what wins
- Design and iterate on classifiers that evaluate products against eligibility rules, across prompting, retrieval, fine-tuning, and multi-model approaches
- Dig into misclassifications to find failure modes, and turn each one into the next experiment
- Build and extend the evaluation sets and metrics that tell us when a model is better, including how we label ground truth
- Track new models and research, and test the ones that could change our accuracy or cost curve
- Extend classification coverage to new product categories as Truemed expands
- Find new applications for our models and data beyond product classification, and prototype the ones worth pursuing
- Collaborate with clinical ops and legal teams to turn eligibility standards into labeled data and testable system behavior
- Write up results so the team makes model decisions from evidence, and help raise AI fluency across engineering

## What you bring

- 5+ years of engineering or applied research experience, with at least 2 years of hands-on work with LLMs or other ML models on real problems
- A track record of rigorous experiments: clear hypotheses, sound baselines, ablations, and conclusions you would defend
- You thrive and enjoy looking at data with your eyes for hours and consider it part of the workflow in any ML work
- Comfort designing evaluation methodology for AI systems - defining what "correct" means and measuring it
- Hands-on experience with prompting, fine-tuning, retrieval, or agent design on foundation models (OpenAI, Anthropic, open-weight models)
- Fluency in Python and enough engineering depth to take an experiment to production
- Senior-level ownership: you've taken an ambiguous ML problem from first experiment to production on your own
- Comfort with ambiguity - the right approach isn't always known upfront and has to be discovered through experimentation
- Public evidence of how you run experiments: a paper, open-source ML work, or a technical write-up of results you would defend
- Bonus: experience with healthcare or regulatory classification, or multi-model orchestration

## About Truemed

Our mission is to help people take control of their health. Today, 95% of all medical costs go to treating illness. Our goal is to empower people to invest in healthy habits today rather than treating illness in the future. We do this by supporting these 5 habits that research shows are tied to significantly improved health outcomes:

- Eating healthy food
- Getting an adequate quantity and quality of sleep
- Increasing movement and exercise and reducing sedentary behavior
- Reducing chronic stress
- Increasing sunlight and minimizing environmental toxins

Today Truemed enables patients to use pretax HSA/FSA funds to buy healthy food, exercise equipment, and supplements. We support brands like Peloton, Eight Sleep, Momentous, and hundreds of others. We're building the infrastructure that allows health and wellness merchants to accept the $150+ billion tied up in HSA and FSA accounts. By allowing consumers to spend these pre-tax dollars on goods that make them healthier, we'll incentivize consumers to invest in their health and begin to reverse the explosion in chronic illness that's plagued the US for the last 50 years.

## Compensation and Benefits

- Comp and equity in the top decile for Series A startups. This position's pay band is $205k to $250k plus stock options
- Comprehensive medical, dental, and vision insurance with employer-sponsored HSA contributions
- 401(k), unlimited PTO, remote work
- Coworking stipend, L&D stipend
- 2x/year company offsites and 2x/year team offsites

## About Truemed

## Company Overview
- **One-liner**: Truemed is a payment platform that enables consumers to use HSA and FSA funds on eligible health and wellness purchases by coordinating independent clinical reviews and issuing IRS-compliant Letters of Medical Necessity (LMNs).
- **Entity Type**: Private (Series A funded)
- **Headquarters**: Austin, Texas, United States
- **Founded**: 2022
- **Founders**: Justin Mares

## Core Business
- Primary industry/industries: Financial Services / Health Technology (HSA/FSA payment enablement)
- Target customers: B2C (consumers with HSA/FSA accounts) and B2B (partner health & wellness brands seeking to offer HSA/FSA payment options)
- Mission or purpose statement: "We make your HSA/FSA work for prevention, not just prescriptions" – Truemed aims to redirect pre-tax healthcare dollars toward preventive interventions like fitness, supplements, sleep, and recovery tools.

## Products & Services
- **Truemed Platform**: A checkout-integrated payment solution that allows consumers to pay with HSA/FSA cards or receive reimbursement. For dual-use items, a clinical intake form is reviewed by an independent licensed clinician who may issue a Letter of Medical Necessity (LMN) to substantiate the purchase. The service covers fitness, supplements, saunas, cold plunges, health tech, and more.

## Market Standing
- **Valuation/Market Cap**: Not publicly available (private company).
- **Key Metric**: Total funding of $3.5 million (seed round closed September 2023) plus a Series A round led by Andreessen Horowitz (amount not disclosed). [linkedin.com](https://www.linkedin.com/company/truemedpayments)
- **Notable Investors/Partners**: Andreessen Horowitz (Series A lead), with earlier seed round from a single undisclosed investor. Partners include thousands of brands (3,000+), such as Garmin (mentioned as a partner brand). [truemed.com/about](https://www.truemed.com/about)
- **Growth Signals**: Over 1.5 million customers served; 67 employees (+85% year-over-year headcount growth); 9,358 LinkedIn followers (+48.8% YoY). Actively hiring with 4 open roles as of mid-2025. [linkedin.com](https://www.linkedin.com/company/truemedpayments)

## Competitive Advantages
- **Regulatory & Compliance Moat**: SOC 2 Type II certified; every LMN issued by an independent licensed practitioner (not Truemed employees) and meets IRS substantiation requirements, reducing risk for partners and consumers.
- **Network Effects**: With 3,000+ partner brands and 1.5M+ customers, Truemed has built a two-sided marketplace that becomes more valuable as more merchants and consumers join.
- **First-Mover in 'Prevention' Spending**: Focuses on making preventive health products (gym memberships, saunas, supplements) HSA/FSA-eligible, a historically underserved area dominated by prescription/doctor-visit spending.

## Strategic Focus
- Expanding partner brand integrations and deepening the clinical review process to cover more product categories.
- Scaling the platform to unlock the $150B+ in annual pre-tax healthcare dollars for preventive and performance health purchases. [truemed.com/about](https://www.truemed.com/about)
- Building out the engineering and product team to enhance checkout flow, compliance automation, and user experience.

## Why Work Here
- **Culture & Mission**: "Senior team of engineers, designers, and operators building the most exciting company in healthcare" – backed by a16z (also backed Coinbase, Airbnb, Stripe, Figma, GitHub, Databricks). [truemed.com/careers](https://www.truemed.com/careers)
- **Growth Trajectory**: Rapid headcount growth (+85% YoY) signals scaling phase, offering career advancement opportunities.
- **Remote/Hybrid Policy**: Not explicitly stated, but headquarters is Austin, TX and roles may be remote or hybrid. Open positions listed include Senior Solutions Engineer, Product Designer, and Customer Success roles.
- **Notable Perks**: Working on a platform that directly helps consumers save ~30% on health purchases; strong focus on compliance and clinical quality; high-ownership environment typical of early-stage venture-backed companies.

## Sources
1. [truemed.com](https://www.truemed.com/)
2. [truemed.com/about](https://www.truemed.com/about)
3. [truemed.com/careers](https://www.truemed.com/careers)
4. [linkedin.com](https://www.linkedin.com/company/truemedpayments)
5. [builtin.com](https://builtin.com/company/truemed)

## Other roles at Truemed

- [Lifecycle Marketing Manager](https://feeny.ai/job/lifecycle-marketing-manager-truemed-los-angeles-ca-or-austin-zy9gbja0nsbr) — Los Angeles CA OR Austin, TX
- [Product Manager, Merchant Payments & Integration](https://feeny.ai/job/product-manager-merchant-payments-integration-truemed-los-angeles-0wwysgx06jp1) — Los Angeles, CA / San Francisco, CA / Austin, TX
- [Future Opportunities](https://feeny.ai/job/future-opportunities-truemed-los-angeles-aax8syrqbh1q) — Los Angeles, CA / San Francisco, CA / Austin, TX
- [Senior Software Engineer - Truemed Labs](https://feeny.ai/job/senior-software-engineer-truemed-labs-truemed-remote-gh2qr2cqcsqy)
- [Tech Lead / Manager - Merchant & API](https://feeny.ai/job/tech-lead-manager-merchant-api-truemed-remote-tff1qpdhfx4z)
- [Customer Success Manager](https://feeny.ai/job/customer-success-manager-truemed-los-angeles-2zxpam5mv4gk) — Los Angeles, CA / San Francisco, CA / Austin, TX
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