Senior Software Engineer (Backend)

About the role

ABOUT COUNSEL http://counsel.health/

Counsel’s mission is to multiply the world's healthcare capacity. We believe in a future in which every person has a personalized, AI-enabled doctor always in their pocket. To accomplish this, we’re building the first fully-vertical, AI-native medical group from the ground up. We’ve redesigned the entire clinical stack with custom AI tools that make our in-house physicians 10x faster and smarter. [learn more on our blog https://www.counselhealth.com/blog]

Since our founding in 2023, we have formed partnerships with leading healthcare organizations and are on track to serve hundreds of thousands of patients on our platform within the next year. We have raised over $35M from a16z, Google Ventures, Pear VC and other top-tier VC firms.

Our team combines deep expertise in medicine (Harvard, Mt. Sinai, Mass General, UCSF) and technology (MIT, Google, DeepMind, NVIDIA, Stripe, Meta) — and we’re looking for exceptional people to join us as we scale.

Join us as we build the future of AI in healthcare!

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ABOUT THE ROLE

We're looking for a Senior Backend Engineer to help define the future of AI-powered, human-led healthcare. You'll sit on our Platform & Integrations team, owning the core product primitives the rest of the company builds on: external APIs, health data models, retrieval infrastructure, and enterprise integrations.

This role is central to scaling our platform: supporting enterprise healthcare clients, powering AI-driven clinical workflows, and keeping distributed systems correct and reliable. Much of this is greenfield, especially how we model and operationalize longitudinal health data from wearables and external systems.

WHAT YOU'LL DO

- Design and evolve our external API and embedded product layer with long-term stability, disciplined versioning, and enterprise-grade craftsmanship

- Evolve our agentic retrieval harness to support patient and clinical search across structured and unstructured data, with strict permission and audit guarantees

- Build reusable platform primitives that let external partners embed and extend our AI capabilities, so every integration adds lasting platform leverage

- Contribute to core data models that unify structured health records, unstructured inputs, and high-frequency time-series signals

WHO YOU ARE

- Cares deeply about API craftsmanship and long-term system design

- Has built complex systems that external customers rely on

- Enjoys modeling messy real-world data, especially high-frequency signals, into clean, durable abstractions

- Has built comprehensive search or RAG systems at production scale

- Has helped scale early systems from 1 to 10 in a fast-paced environment

- Thrives in small, high-leverage teams where ownership is real

- Has a track record of maintaining and leveling up operational excellence across engineering organizations