
Developers at leading digital health companies, from Metabolic clinics to Longevity, use Junction to remotely access granular health data from wearables and lab tests. Junction's platform simplifies the integration and management of API connections with wearables, medical devices, and lab services. From test ordering to results retrieval, Vital handles it all—coordinating across 5,000+ walk-in testing centers, shipping lab kits directly to patients, and scheduling mobile phlebotomist visits. This streamlined process reduces operational burdens, allowing you to focus on delivering high-impact solutions. Junction supports a wide range of healthcare applications, including: - Correlating key biomarkers like HRV and sleep to track recovery progress - Managing chronic conditions with integrated support for blood pressure monitors, CGMs, and wearables - Scaling data collection for clinical trials across a distributed population - Personalizing treatment plans with wearables data and cost-effective specialty lab testing across 50 states Junction helps you access key insights, personalize treatment programs, and improve health outcomes across multiple sectors, all through a single universal API.

Developers at leading digital health companies, from Metabolic clinics to Longevity, use Junction to remotely access granular health data from wearables and lab tests. Junction's platform simplifies the integration and management of API connections with wearables, medical devices, and lab services. From test ordering to results retrieval, Vital handles it all—coordinating across 5,000+ walk-in testing centers, shipping lab kits directly to patients, and scheduling mobile phlebotomist visits. This streamlined process reduces operational burdens, allowing you to focus on delivering high-impact solutions. Junction supports a wide range of healthcare applications, including: - Correlating key biomarkers like HRV and sleep to track recovery progress - Managing chronic conditions with integrated support for blood pressure monitors, CGMs, and wearables - Scaling data collection for clinical trials across a distributed population - Personalizing treatment plans with wearables data and cost-effective specialty lab testing across 50 states Junction helps you access key insights, personalize treatment programs, and improve health outcomes across multiple sectors, all through a single universal API.
What they do: Unified API connecting wearable/device data with nationwide lab testing and collection workflows
Sector: Healthcare diagnostics infrastructure / digital health developer platform
Funding: Raised $18M Series A (announced March 11, 2025) led by Creandum
Scale signals: Supports 300+ device integrations and nationwide lab testing; reported millions of connected devices
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Fragmented device data and complex lab logistics for digital health, virtual clinics, clinical trials, and personalized care.
Digital health / Diagnostics infrastructure
$18M
Round includes participation from Y Combinator, Point Nine, Inflect Health, and Amino Collective
“Led by Creandum with participation from prominent early-stage investors including Y Combinator and Point Nine”
Intro
Healthcare is in crisis and the people behind the results deserve better. With more and more data coming from wearables, lab tests, and patient–doctor interactions, we’re entering an era where data is abundant.
Junction is building the infrastructure layer for diagnostic healthcare, making patient data accessible, actionable, and automated across labs and devices. Our mission is simple but ambitious: use health data to unlock unprecedented insight into human health and disease.
If you're passionate about how technology can supercharge healthcare, you’ll fit right in.
Backed by Creandum, Point Nine, 20VC, and YC , we’re working to solve one of the biggest challenges of our time: making healthcare personalized, proactive, and affordable. We’re already connecting millions and scaling fast.
Short on time? TL;DR
Why we need you
We have more customers coming in than Product can support directly. Right now, Product spends 30–40% of their time on external calls.
Customers come to us with detailed technical questions: API authentication, access models, architecture, integration patterns, device data flows, lab network coverage, and compliance requirements (HIPAA, SOC 2, BAAs). Product handles most of it because they have the context.
That doesn’t scale. We’ve hired ahead on engineering, and several company priorities depend on Product having the time to properly design features and coordinate engineering work. If Product stays tied up in pre- and post-sales technical support, we ship fewer features — or ship the wrong ones.
This role exists to change that. Within six months:
What you’ll be doing day to day
Requirements
Nice to have
What this role isn’t
If you’ve supported complex, API-first products and regularly fielded detailed technical and security questions from customer engineering teams, this will feel familiar.