Software Engineer jobs at Y Combinator startups

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SnapMagic (S15) AI copilot for electronics design(2 days ago)
Director of Software & Product

fulltimeRedwood City, CA, US / Remote (Redwood City, CA, US)Engineering manager

Tenjin (S14) Mobile marketing analytics and infrastructure
Senior Full-Stack Ruby on Rails Engineer

fulltimeUS / CA / MX / BR / AR / CO / PE / Remote (US; CA; MX; BR; AR; CO; PE)Full stack

Tenjin (S14) Mobile marketing analytics and infrastructure
Senior Mobile SDK Engineer

fulltimeSan Francisco / Remote (US; CA; MX; CO; AR; BR; PE)Full stack

Tsenta (S26) AI-Native, On-Device Job Automation(3 days ago)
Software Engineering Intern

internIN / Remote (IN)Full stack

Human Archive (W26) Multimodal data provider for robotics learning(1 day ago)
Machine Learning Intern

internSan Francisco, CA, US / Remote (US)Machine learning

item (F25) The AI-Native CRM that works for you(16 days ago)
Founding Engineer

fulltimeSan Francisco, CA, USFull stack

Clicks (F25) Computer use agents to automate all back-office work(19 days ago)
Software Engineer

fulltimeZürich, ZH, CHFull stack

Icarus (F25) Stratospheric birds for defense(7 days ago)
Senior Mechanical Engineer

fulltimeLos Angeles, CA, USMechanical

Icarus (F25) Stratospheric birds for defense(7 days ago)
Senior Full Stack Software Engineer

fulltimeLos Angeles, CA, USFull stack

Leadbay (F25) Discover and qualify SMB leads that couldn't be found before.(about 2 months ago)
Engineering Intern

internParis, IDF, FR / Paris, Île-de-France, FR / San Francisco, CA, USFull stack

Leadbay (F25) Discover and qualify SMB leads that couldn't be found before.
Backend Engineer

fulltimeParis, IDF, FR / Paris, Île-de-France, FR / San Francisco, CA, USBackend

Flick (F25) Figma + Cursor, for AI Filmmaking(about 1 month ago)
Founding Frontend Engineer

fulltimeSunnyvale, CA, US / RemoteFrontend

Hypercubic (F25) AI to maintain and modernize COBOL.(2 days ago)
Founding Software Engineer

fulltimeSan Francisco, CA, USFull stack

Caddy (F25) The voice interface that works proactively for you(8 days ago)
Founding Engineer

fulltimeNew York, NY, USFull stack

Brickwise (F25) AI property manager for landlords and estate agents(about 1 month ago)
Software Engineer (Full Stack)

fulltimeLondon, England, GBFull stack

Structured AI (F25) AI workforce for Construction Engineering(11 days ago)
Founding Engineer

fulltimeNew York, NY, USFull stack

Uplane (F25) Replace marketing agencies with AI(18 days ago)
Founding Engineer (Full-Stack)

fulltimeSan Francisco, CA, USFull stack

Uplane (F25) Replace marketing agencies with AI(26 days ago)
Founding AI Engineer

fulltimeSan Francisco, CA, USData science

NOSO LABS (S25) Build AI agents for field technicians to diagnose and sell 10x better(5 days ago)
Founding Engineer

fulltimeSan Francisco, CA, USFull stack

Floot (S25) The easiest way for non-coders to build apps with AI.(9 days ago)
Founding Full-Stack Engineer

fulltimeSan Francisco, CA, USFull stack

Manufact (formerly mcp-use) (S25) Open source SDK & cloud infrastructure for MCP Servers & ChatGPT Apps (5 days ago)
Cloud Engineer (Infra / DevOps)

fulltimeSan Francisco, CA, US / Zürich, Zurich, CHDevops

Manufact (formerly mcp-use) (S25) Open source SDK & cloud infrastructure for MCP Servers & ChatGPT Apps (5 days ago)
Open Source Engineer (DevRel / Community)

fulltimeSan Francisco, CA, US / Zürich, Zurich, CHBackend

Channel3 (S25) Database of every product on the internet(2 days ago)
Backend Engineer

fulltimeNew York, NY, USBackend

Channel3 (S25) Database of every product on the internet(15 days ago)
Fullstack Engineer

fulltimeNew York, NY, USFull stack

BootLoop (S25) Firmware in minutes, not months - rigorously tested on real hardware(about 2 months ago)
Founding Software Engineer

fulltimeSan Francisco, CA, USFull stack

Pangolin (S25) Identity-aware VPN and proxy for remote access to anything, anywhere.(3 months ago)
Founding Engineer Full Stack

fulltimeSan Francisco, CA, US / Remote (US)Full stack


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