Software Engineer jobs at Y Combinator startups

Find open roles and connect with founders and hiring teams of over 1,000 vetted, funded Y Combinator startups. And create one application to apply to hundreds of roles at YC companies.
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Mashgin (W15) Self-Checkout using Computer Vision.
Senior Software Engineer, Infrastructure

fulltimePalo Alto, CABackend

Mashgin (W15) Self-Checkout using Computer Vision.
Senior Software Engineer, Backend

fulltimePalo Alto, CABackend

OneSignal (S11) Engage customers through personalized omni-channel messaging(5 months ago)
Senior Software Engineer, Journeys Team (Fullstack)

fulltimeUnited States (Remote) / Remote (US)Full stack

OneSignal (S11) Engage customers through personalized omni-channel messaging(2 months ago)
Staff Software Engineer, SMS Team (Fullstack)

fulltimeUnited States (Remote) / Remote (US)Full stack

HackerRank (S11) Change the world to value skills over pedigree
HackerRank (YC S11) | Hiring Engineering Manager | Santa Clara - Hybrid

fulltimeSanta Clara, CA, USEngineering manager

HackerRank (S11) Change the world to value skills over pedigree
HackerRank (YC S11) | Hiring Senior Software Engineer | Santa Clara CA - Hybrid

fulltimeSanta Clara, CA, USBackend

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

PicnicHealth (S14) Empowering Patients for Deep Real World Data
AI Tools Engineer

fulltimeSan Francisco, Remote / Remote (US)Full stack

Wefunder (W13) We're Robinhood for pre-IPO startups. Everyone can invest $100.(8 months ago)
Full Stack, Senior Software Engineer

fulltimeSan Francisco, CA, USFull stack

CircuitHub (W12) On-Demand Electronics Manufacturing
Computer Vision Engineer

fulltimeUK / Remote (US)Full stack

CircuitHub (W12) On-Demand Electronics Manufacturing
Haskell Engineer

fulltimeUK / Remote (US)Full stack

RealRoots (S25) AI social app for female transplants(9 days ago)
Software Engineer, Full-Stack

fulltimeSan Francisco, CA, USFull stack

burnt (S25) Agentic Operating System for Food Supply Chain(8 days ago)
Founding Engineer

fulltimeSan Francisco, CA, USFull stack

Magnetic (S25) AI Tax Preparer for CPA firms
Founding Engineer (Applied AI)

fulltimeSan Francisco, CA, USFull stack

Humoniq (S25) AI-Native BPO for travel & transport(4 days ago)
Senior AI Engineer

fulltimeMission Viejo, CA, USData science

Embedder (S25) Coding Agent for Firmware
Founding Software Engineer

fulltimeSan Francisco, CA, USFull stack

Embedder (S25) Coding Agent for Firmware
Founding Embedded Software Engineer

fulltimeSan Francisco, CA, USEmbedded systems

truthsystems (S25) Automatically blocking risky behavior with real-time governance agents(1 day ago)
Founding Full-Stack Engineer

fulltimeSan Francisco, CA, USFull stack

Text.ai (X25) AI in your group chats(14 days ago)
Founding Full Stack Engineer

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

StarSling (X25) Cursor for DevOps(about 1 month ago)
Founding Software Engineer (Full-Stack)

fulltimeSan Francisco, CA, US / San Mateo, CA, US / Palo Alto, CA, US / Menlo Park, CA, US / Redwood City, CA, USFull stack

StarSling (X25) Cursor for DevOps
Software Engineer (Full-Stack)

fulltimeSan Francisco, CA, US / San Mateo, CA, US / Palo Alto, CA, US / Menlo Park, CA, US / Redwood City, CA, USFull stack

Eloquent AI (X25) The AI Operator for Financial Services
AI Engineer, .＊RAG

fulltimeSan FranciscoFull stack

Eloquent AI (X25) The AI Operator for Financial Services
AI Engineer, AIOps & Infrastructure

fulltimeSan FranciscoFull stack

Third Chair (X25) Agents for in-house legal teams
Senior Software Engineer (Backend)

fulltimeIN / Remote (IN)Backend

Novoflow (X25) AI employees that automate medical operations for clinics. (5 days ago)
Founding Software Engineer

fulltimeSan Francisco, CA, USFull stack

Novoflow (X25) AI employees that automate medical operations for clinics.
Founding Forward Deployed Engineer

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

Crimson (X25) The AI Associate for Litigation Lawyers(4 days ago)
Founding Engineer (Full Stack)

fulltimeLondon, England, GBFull stack

The LLM Data Company (X25) Post-training Data Research
Founding Senior Research Engineer

fulltimeSan FranciscoFull stack

The LLM Data Company (X25) Post-training Data Research
Founding Research Engineer

fulltimeSan FranciscoFull stack


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