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18,022 Y Combinator jobs

Open roles at Y Combinator–backed companies, from current batches to graduated unicorns.

18K jobs
Relativity Space Backed by Y Combinator
2 views 7 days ago

Sr CNC Operator II, First Shift

New North AmericaSenior
United States

At Relativity Space, we’re building rockets to serve today’s needs and tomorrow’s breakthroughs. Our Terran R vehicle will deliver customer payloads to orbit, meeting the growing demand for launch capacity. But that’s…

Automation Cnc Machine Learning Slack
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Relativity Space Backed by Y Combinator
2 views 7 days ago

CNC Operator II, First Shift

New North America
United States

At Relativity Space, we’re building rockets to serve today’s needs and tomorrow’s breakthroughs. Our Terran R vehicle will deliver customer payloads to orbit, meeting the growing demand for launch capacity. But that’s…

Automation Cnc Machine Learning Slack
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Icarus Backed by Y Combinator
2 views 7 days ago

Head of People

New North AmericaContractC-level
United States

Icarus was founded on the belief that the Stratosphere is the Forgotten Frontier and that reclaiming it will define the next era of aerospace and what is possible from the sky. We build solar-powered aircraft that fly…

Dfars Employee Relations HRIS Itar
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Mantle Backed by Y Combinator
4 views 7 days ago

Software Engineer, Mobile

New On-siteNorth America H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States

Founding-track mobile engineer who owns Mantle's consumer app end-to-end — onboarding, messaging with the AI agent, family dashboards, notifications, and mobile architecture through App Store release. Built with React Native or native Swift/Kotlin, working across the stack with React, Node.js, and AWS; in-office Mon–Thu in San Francisco with remote Fridays.

Accessibility AI Android API AWS +9 skills
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Mantle Backed by Y Combinator
7 views 7 days ago

Software Engineer, Applied AI

New On-siteNorth America H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States

Software Engineer on Mantle's Applied AI team builds the core LLM agent that helps families manage aging parents' affairs — agent orchestration, evals, guardrails, retrieval/memory, and integrations. Backend work in Python or Node.js deployed on AWS, working directly with founders in San Francisco (remote Fridays).

AI API AWS Claude Code Data Pipelines +5 skills
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Mantle Backed by Y Combinator
3 views 7 days ago

Social & Content Marketing Manager

New On-siteNorth America H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States

About Mantle We’re building an AI agent to help families support their aging parents ( origin story here ). Over 40M “sandwich generation” Americans currently manage their parent’s affairs. Keeping mom/dad safe and…

AI Analytics Content Marketing Fintech LLM +1 skills
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Mantle Backed by Y Combinator
9 views 7 days ago

Product Manager

New On-siteNorth America H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States

Founding-stage Product Manager at Mantle, an early-stage startup building an AI agent that helps families manage their aging parents' affairs. You'll work directly with the founders on user discovery, writing specs, defining AI agent behavior, prioritizing the roadmap, and shipping consumer features end-to-end using LLMs, agents, and product analytics — on-site in San Francisco Monday–Thursday wit

AI Analytics Fintech LLM Prototyping +1 skills
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Mantle Backed by Y Combinator
5 views 7 days ago

Performance Marketing Manager

New On-siteNorth America H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States

About Mantle We’re building an AI agent to help families support their aging parents ( origin story here ). Over 40M “sandwich generation” Americans currently manage their parent’s affairs. Keeping mom/dad safe and…

AI Analytics Fintech Google Ads Meta Ads +4 skills
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Mantle Backed by Y Combinator
4 views 7 days ago

Head of Engineering

New On-siteNorth AmericaC-level H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States

About Mantle We’re building an AI agent to help families support their aging parents ( origin story here ). Over 40M “sandwich generation” Americans currently manage their parent’s affairs. Keeping mom/dad safe and…

AI AWS Claude Code Cloud Fintech +4 skills
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float-health Backed by Y Combinator
2 views 7 days ago

Intake Specialist

Likely evergreen RemoteNorth AmericaFull-time
United States

Coordinate urgent home-infusion visits by matching nurses to patients, verifying details, and ensuring seamless care delivery using Float’s platform and tools like Zendesk.

Slack Zendesk
48K – 50K $
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truora Backed by Y CombinatorBacked by Accel
3 views 7 days ago

Account Executive SMB Sr

New Senior

Descrição A ZapSign foi fundada em 2020 com um sonho ousado: simplificar a vida digital! Desde então, nossa trajetória tem sido incrível e, agora, com a aquisição pela Truora desde 2022, estamos mais fortes do que…

Account Executive AI ChatGPT CRM HubSpot +2 skills
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May Mobility Backed by Y Combinator
3 views 7 days ago

Autonomous Vehicle Operations Specialist II

Open 58d On-siteNorth America H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States

May Mobility is transforming cities through autonomous technology to create a safer, greener, more accessible world. Based in Ann Arbor, Michigan, May develops and deploys autonomous vehicles (AVs) powered by our…
Mantle Backed by Y Combinator
7 views 7 days ago

Growth Marketing Manager

New On-siteNorth America H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States

About Mantle We’re building an AI agent to help families support their aging parents ( origin story here ). Over 40M “sandwich generation” Americans currently manage their parent’s affairs. Keeping mom/dad safe and…

AI Amplitude Analytics Braze Fintech +6 skills
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Mantle Backed by Y Combinator
3 views 7 days ago

Customer Support Lead

New On-siteNorth AmericaLead H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States

About Mantle We’re building an AI agent to help families support their aging parents ( origin story here ). Over 40M “sandwich generation” Americans currently manage their parent’s affairs. Keeping mom/dad safe and…

AI Analytics Fintech LLM Slack +1 skills
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Gusto Backed by Y Combinator
2 views 7 days ago

Staff Recruiter, Design & Specialized Tech

New HybridNorth AmericaFull-timeStaff H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States

About Gusto At Gusto, we're on a mission to grow the small business economy. We handle the hard stuff — payroll, health insurance, 401(k)s, and HR — so owners can focus on their craft and their customers. With teams in…

AI Candidate Experience Full Cycle Recruiting User Research
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Relativity Space Backed by Y Combinator
1 views 7 days ago

Construction Project Manager, Superintendent

Open 122d North AmericaContract
United States

Oversee construction of aerospace infrastructure in Cape Canaveral, managing design, permitting, contractor selection, and on-site execution for Relativity Space’s rocket launch facilities.

96K – 127K $
Nourish Backed by Y CombinatorBacked by Index Ventures
6 views 7 days ago

Provider Partnerships Manager (Territory Sales)

Open 118d RemoteNorth AmericaFull-time
United States

About Us Health is the most important thing in life, and the American healthcare system is completely broken - poor outcomes, high cost, bad patient experience. We're building a new system from the ground up. Our…

Agentic AI AI Business Development CRM Salesforce
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Arpio Backed by Y Combinator
8 views 7 days ago

Sales Development Representative (SDR)

Open 53d RemoteNorth AmericaFull-time
United States

This role is eligible for full-time remote employment within the US or can be hybrid in our Durham, NC office 2-3 days/week. Please note that we unfortunately cannot sponsor H1B visas at this time. Arpio participates…

Automation AWS Azure Cloud Cloud Native +5 skills
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Pulley Backed by Y Combinator
8 views 7 days ago

Associate Project Manager, Permitting

Open 131d RemoteNorth America
United States

Associate Project Manager on Pulley's in-house permitting team, supporting delivery of fast construction permitting for commercial projects: researching permit requirements across jurisdictions, preparing permit plans, coordinating with city staff, and tracking permit status, while feeding insights to the product team. Requires 3+ years in construction management or architecture with a PM focus; r

AI Procore
80K – 95K $
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Coinbase Backed by Y CombinatorBacked by a16zBacked by GreylockBacked by Union Square Ventures
9 views 7 days ago

Manager, WFM CX Operations

Open 47d RemoteNorth America H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States

Ready to do the most impactful work of your career? At Coinbase, we are uncompromising on our mission to increase economic freedom. The bar is high, the environment is intense, and we like it that way. This isn't a…

Agentic AI AI Automation Fintech Generative AI +2 skills
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