Senior Fullstack Engineer

# Senior Fullstack EngineerFull-timeSan Francisco, CA · Hybrid$220,000–$280,000/yr## About the role### RoleKunya is building an all-in-one AI platform: chat, images, video, voice, workspaces, and agents. We’re looking for a **Senior Fullstack Engineer** who can build fast, think clearly, and own meaningful parts of the product from idea to production.This role is based in **San Francisco** with a **hybrid** setup. You’ll work closely with a small team building AI-native software for people who want more leverage, more speed, and better tools.### What you'll do* Build and ship high-impact features across frontend, backend, APIs, and internal systems* Work closely with product and design to create intuitive experiences around powerful AI capabilities* Improve performance, quality, and reliability in core user journeys* Help design systems that support rapid product iteration without collapsing under complexity* Contribute across chat, media, voice, workspace, and agent-oriented product areas* Help raise the engineering bar through strong execution and technical judgment### Why this role mattersWe believe AI should expand human agency, not shrink it. That only happens if the product is genuinely useful, fast, and well-built. This role is central to making that real.### How we work* Small team, high trust* Serious ownership* Fast shipping with strong judgment* Hybrid collaboration in San Francisco## What we're looking for### What we're looking for* 5+ years of experience building and shipping production software* Strong fullstack experience across modern frontend applications and backend services* Strong product instincts and ability to work from first principles* Experience with APIs, databases, production debugging, and system design* Ability to thrive in ambiguity and turn rough direction into shipped outcomes* Strong communication and collaborative habits### You may be a fit if you* Want to own real product surfaces, not just tickets* Move quickly without sacrificing thinking* Care about product, users, and technical quality equally* Want to build in a high-agency environment with a small team### Nice to have* Experience with AI infrastructure, media systems, or agent workflows* Startup experience* Experience mentoring engineers or shaping engineering culture## Benefits & perks### What you get* Competitive salary* Equity upside* Hybrid work setup in San Francisco* High ownership and direct product impact* A small team working on meaningful AI product problems### What this is not* A heavily layered org* A ticket factory* A place where good ideas wait for permission## Other open roles### Senior Fullstack EngineerEngineeringFull-timeRemote (Global) · Remote$220,000–$280,000/yrView role### Senior Fullstack EngineerEngineeringFull-timeSingapore · Hybrid$220,000–$280,000/yrView role### Senior Fullstack EngineerEngineeringFull-timeWarsaw, Poland · Hybrid$220,000–$280,000/yrView role### Apply for this roleTakes about 2 minutes. Resume optional but recommended. #J-18808-Ljbffr