Employer profile
Y Combinator
5 open roles indexed with location, benefit, and apply-link signals where available.
Open roles
Showing the most recent indexed roles for this employer.
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Product Engineer, Applications Operations
San Francisco Bay Area
unspecified Salary not disclosedProduct Engineer, Applications Operations San Francisco Bay Area Y Combinator is hiring a full-stack product engineer to work at the center of how YC operates - from the application pipeline to events and internal tools. This role sits at the intersection of engineering, product, and operations. You'll spend most of your time building production software for both internal teams and founders, while also helping design and improve the processes those tools support. At its core, this role is about turning operational complexity into well-designed software. We don't have traditional PMs or designers. Engineers own the product experience end-to-end - from understanding the problem to designing the UI to shipping the system. The right person is excited to create their own interfaces, workflows, and user experiences, not just implement someone else's specs. WHAT YOU'LL DO Product & Engineering (Core) - Design, build, and ship full-stack applications powering YC's admissions pipeline, events platform, and internal tools - Develop and extend YC's events platform (Demo Day, meetups, recruiting events, office hours, investor events), including registration, coordination, and media handling - Integrate with external systems (Google Calendar, Slack, email, data pipelines) to coordinate internal teams, external founders and more - Build deep AI and search systems (semantic search, embeddings, natural language queries) across large datasets - Make pragmatic engineering tradeoffs in a fast-moving environment Process & Automation - Build systems that automate YC's admissions workflow (scheduling, notifications, status tracking, email triage, deadlines) - Improve how applications are routed, interviews are coordinated, and information is
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Investment Associate & Product Engineer
San Francisco Bay Area
unspecified Salary not disclosedInvestment Associate & Product Engineer San Francisco Bay Area Y Combinator is looking for a full-stack product engineer who also wants to apply their skills to investing, diligence, and founder support. This role sits at the intersection of engineering, product, and investing. You will spend much of your time writing production code - building internal and founder-facing tools - while also contributing directly to company evaluation and investment decisions. This is not two jobs stitched together. The core of the role is turning judgment into software: using code to improve how YC evaluates companies, supports founders, and scales its impact after the batch. What you'll do: - Product & Engineering (core responsibility) - Design, build, and ship full-stack web applications for partners, founders, and investors - Own features end-to-end: scoping, design, implementation, and iteration - Work across frontend, backend, and data layers to improve YC's post-batch and internal platforms (e.g., founder tools, analytics, workflow systems) - Make pragmatic engineering tradeoffs in a fast-moving, high-ownership environment - Investing & Analysis - Evaluate post-batch and growth-stage companies by analyzing business models, markets, teams, and operating metrics - Contribute to diligence efforts, including reviewing decks and data rooms, benchmarking KPIs, and conducting market or customer research - Build and maintain analytical tools, dashboards, or workflows that support investment decisions - Write clear, structured memos and analyses for partners and our Investment Committee This role is ideal for someone who: - Is a strong full-stack engineer and enjoys owning production software - Likes talking
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Product Engineer, Internal Tools
San Francisco Bay Area
unspecified Salary not disclosedProduct Engineer, Internal Tools San Francisco Bay Area Y Combinator is run by a small team that is committed to helping founders start the next Airbnb, Stripe, Reddit, or Doordash. We work out of the same campus in San Francisco that we run the batch in. We also operate according to the same principles we teach our startups - so if you've read Paul Graham's essays https://paulgraham.com/hwh.html or watched our videos on YouTube https://www.youtube.com/watch?v=z1iF1c8w5Lg, you can already predict what it would be like to work here. Working at YC places you in the center of the startup world. About the role To manage our operations at scale, we write lots of software for YC itself. One aspect of this is building internal tools to help run YC itself more efficiently. For this team, our users are YC employees - Group Partners who need productivity tools to engage 1000s of companies, finance teams that need to process investment documents at scale, and a legal team that supports every kind of startup legal issue imaginable. In this role, you will: - Design and build out new features in entirety. Our particular team focuses on helping founders after the batch, including event software and engagement tools to help YC keep in touch with companies well after they go through the YC program. - Work alongside YC Partners to build productivity software. We've built Gmail plugins and company dashboards for partners to quickly engage founders who email/ Slack them regularly. - Scope and prioritize
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Software Product Design Engineer
San Francisco Bay Area
unspecified Salary not disclosedSoftware Product Design Engineer San Francisco Bay Area Build polished, thoughtful product experiences at YC Y Combinator builds the software that runs YC - internal tools used by partners and founders, public products used by the broader startup ecosystem, and AI-powered systems that automate complex workflows. Our team is small, the impact is large, and we ship real product to real users frequently. We're looking for a Software Product Design Engineer - someone who lives at the intersection of design and engineering. You'll design beautiful user experiences, translate high-fidelity mocks into production code, and proactively elevate existing interfaces with thoughtful detail and interactions. What you'll do Design compelling, clear UI/UX and produce high-quality mocks that demonstrate strong product taste. - Turn design mocks (yours or others') into pixel-perfect, production-ready frontends using modern web tech. - Iterate on existing interfaces by improving layout, interaction quality, motion, and design consistency. - Work closely with engineers, partners, and stakeholders - you'll own the design and implementation of features end-to-end. - Rapidly prototype and “vibe code” to explore ideas, gather feedback, and iterate quickly. - Contribute to design systems, component libraries, and patterns that raise the bar for frontend quality across YC. - Stay close to users: talk to them, watch how they use the product, and improve the experience based on real signals. What we're looking for - Strong UX and visual design skills with proven taste and craftsmanship. - Frontend engineering experience - comfort building real UI in React, TypeScript, and modern
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Product Engineer, Bookface
San Francisco Bay Area
unspecified Salary not disclosedProduct Engineer, Bookface San Francisco Bay Area Y Combinator is run by a small team that is committed to helping founders start the next Airbnb, Stripe, Reddit, or Doordash. We work out of the same campus in San Francisco that we run the batch in. We also operate according to the same principles we teach our startups - so if you've read Paul Graham's essays https://paulgraham.com/hwh.html or watched our videos on YouTube https://www.youtube.com/watch?v=z1iF1c8w5Lg, you can already predict what it would be like to work here. Working at YC places you in the center of the startup world. About the role To manage the YC program at scale, we write lots of software. The Bookface team specifically focuses on building YC's most critical tools to help founders through the batch - and well afterwards. Some projects we're working on: - Bookface. Software that helps operate and manage the day-to-day batch, including event programming, office hours, pitch prep, and more. Every company that goes through the batch relies on this software to get the most out of their YC experience. - Forums & Alumni Directory. Helps founders get the best advice and feedback on how to build their startup - from technical advice, customer acquisition, fundraising, and more. - Demo Day investor portal. Matching founders and investors for early seed fundraising, with billions of dollars resulting from the connections we've made through our platform. - Launch YC. A public platform for YC founders to get early customers and product feedback from both