Software Engineer jobs at Y Combinator startups

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Mason (W16) Mason is the fastest way to take smart devices from idea to end user(1 day ago)
Full Stack Software Engineer

fulltimeSeattle, WAFull stack

Mason (W16) Mason is the fastest way to take smart devices from idea to end user(4 days ago)
Software Engineer - Backend

fulltimeSeattle, WABackend

SnapMagic (S15) AI copilot for electronics design(about 22 hours ago)
Director of Software & Product

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

Hive (S14) Marketing automation for event promoters (email, sms, ads, CRM)
Senior Product Software Engineer

fulltimeCanada (Remote) / Remote (CA)Full stack

Hive (S14) Marketing automation for event promoters (email, sms, ads, CRM)
Staff Software Engineer, Data Systems

fulltimeCanada (Remote) / Remote (CA)Full stack

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

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

Clicks (F25) Computer use agents to automate all back-office work(1 day ago)
Software Engineer

fulltimeSan Francisco, CA, USFull stack

Lightberry (F25) The social brain for robots.(7 days ago)
Robotics Engineer

fulltimeSan Francisco, CA, USRobotics

Lightberry (F25) The social brain for robots.(7 days ago)
Software Engineer, Voice AI

fulltimeSan 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

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

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

Hypercubic (F25) AI to maintain and modernize COBOL.(13 days ago)
Founding Software Engineer

fulltimeSan Francisco, CA, USFull stack

Idler (S25) Reinforcement learning environments.
Senior Software Engineer

fulltimeSan FranciscoFull stack

Idler (S25) Reinforcement learning environments.
Staff Software Engineer

fulltimeSan FranciscoFull stack

Floot (S25) The easiest way for non-coders to build apps with AI.(4 days ago)
Founding Full-Stack Engineer

fulltimeSan Francisco, CA, USFull stack

Socratix AI (S25) AI coworkers for fraud and risk teams.(23 days ago)
Founding Backend Engineer

fulltimeMountain View, CA, USBackend

Socratix AI (S25) AI coworkers for fraud and risk teams.(1 day ago)
Software Engineering Intern

internMountain View, CA, USFull stack

Pangolin (S25) Identity-aware VPN and proxy for remote access to anything, anywhere.(7 days ago)
Founding Engineer Full Stack

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

EffiGov (S25) The AI OS for Cities(5 days ago)
Founding Engineer

fulltimeSan Francisco, CA, USFull stack

EffiGov (S25) The AI OS for Cities(1 day ago)
Mission Software Engineer

fulltimeSan Francisco, CA, USFull stack

Verne Robotics (S25) AI models that teach robots new skills in hours(18 days ago)
Robotics Data Infrastructure Engineer

fulltimeSan Francisco, CA, USBackend

truthsystems (S25) Automatically blocking risky behavior with real-time governance agents(3 months ago)
Founding Full-Stack Engineer

fulltimeSan Francisco, CA, USFull stack

AgentMail (S25) Email Inboxes for AI Agents
Senior Infrastructure Engineer

fulltimeSan Francisco, CA, US / Remote (San Francisco, CA, US)Backend

AgentMail (S25) Email Inboxes for AI Agents(3 months ago)
Founding Engineer

fulltimeSan Francisco, CA, USBackend

Parametric (F25) Robots for frontline physical labor — starting with laundry(about 2 months ago)
Senior ML Infrastructure Engineer

fulltimeSan Francisco, CA, USDevops

Parametric (F25) Robots for frontline physical labor — starting with laundry(7 days ago)
Software Engineer, Systems

fulltimeSan Francisco, CA, USEmbedded systems

MorphoAI (X25) Software tool for designing robots and machines (about 1 hour ago)
Founding Engineer

fulltimeLondon, England, GB / New York, NY, US / San Francisco, CA, USMachine learning

Third Chair (X25) Automating complex legal workflows with human lawyers in the loop.(about 1 month ago)
Senior Software Engineer (Backend)

fulltimeIN / Remote (IN)Backend

Sixtyfour (X25) People Intelligence at Scale(11 days ago)
AI Engineer

fulltimeSan Francisco, CA, USFull stack

Sixtyfour (X25) People Intelligence at Scale(1 day ago)
Software Engineer - Full-Stack

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


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