Science jobs at Y Combinator startups

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camfer (S24) Building the world’s first AI mechanical engineer.(29 days ago)
Founding Research Engineer

fulltimeSan Francisco, CA, USResearch

Corgi (S24) Corgi is building an AI insurance company
Chef (7 days a week)

fulltimeSan Francisco, CA, USChemistry

Same (W24) Build products without coding(26 days ago)
Research Engineer

fulltimeSan Francisco, CA, US / RemoteResearch

LunaJoy Health (W22) AI-powered scalable infrastructure + mental health services, starting…
Licensed Mental Health Providers

contractUS / Remote (US)Healthcare

Tavus (S21) Building the human layer of AI
AI Researcher (Rendering)

fulltimeSan Francisco, CA, US / Remote (US)Research

Tavus (S21) Building the human layer of AI
AI Researcher (Voice)

fulltimeSan Francisco, CA, US / Remote (US)Research

Terra API (W21) API for developers to access health data
AI and Health Researcher

fulltimeLondon, England, GBResearch

Prolific (S19) Making diverse, high-quality data easily available to anyone, anywhere
AI Research Engineer

fulltimeLondon, England, GB / Remote (GB)Research

AgileMD (S11) Predictive analytics and clinical pathways for hospitals
Healthcare Outcomes Data Analyst

fulltimeUS / Remote (US)Healthcare

SiPhox Health (S20) Wearable and At-Home protein monitoring with silicon photonic chips
Biomarker Insights & Clinical Training Lead

fulltimeBoston, MA, USHealthcare

Deepgram (W16) Building foundational AI for speech transcription and understanding.
Research Scientist, Voice

fulltimeUS / Remote (US)Research

Fella & Delilah (W20) Fella & Delilah is the direct-to-patient clinic for busy families to…
Nurse Practitioner (≥ 3 provinces Canada) — Remote, $60/h inc equity

contractCA / Remote (CA)Healthcare

Fella & Delilah (W20) Fella & Delilah is the direct-to-patient clinic for busy families to…
Fractional Medical Director — Remote, $90/h inc equity

contractCA / Remote (CA)Healthcare

Wyndly (W21) Life's better without allergies(7 months ago)
Physician - Synchronous Telehealth - 1099 / Remote

contractUS / Remote (US)Healthcare

Maritime Fusion (W25) Fusion reactors for ships
Plasma Physicist

fulltimeSan Francisco, CA, USLaboratory

arnata (W21) AI workers for the logistics industry.
AI Researcher

fulltimeSan Francisco, CA, US / RemoteResearch

Notable Labs (W15) Personalized drug discovery for blood cancer.
Product Development Scientist / Senior Assay Development Scientist

fulltimeFoster City, CALaboratory

Notable Labs (W15) Personalized drug discovery for blood cancer.
Principal Product Development Scientist

fulltimeFoster City, CALaboratory

Anthrogen (S24) We're training the next generation of protein foundation models.(2 months ago)
Machine Learning Research Scientist

fulltimeSan Francisco, CA, USResearch

Leeroo (X25) Continuously Learning AI Agents
Research Scientist Intern – PhD (AI Agentic Systems)

internLondon, England, GB / RemoteResearch

Yoneda Labs (W24) Foundation Model for Chemical Manufacturing
Organic Chemist

fulltimeSan Francisco, CA, USChemistry

Relace (W23) LLMs for Code Generation
Machine Learning Scientist

fulltimeSan Francisco, CA, USResearch

Ankr Health (W22) Virtualizing brick-mortar infrastructures of clinics w/ generative AI
Manager, Clinical Research (Oncology)

fulltimeHouston, TX, USHealthcare


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