Skip to content
JuliusJuliusSan Francisco, CA

Software Engineer - Product

Build intuitive, performant interfaces for an AI application used by millions, spanning tool use, code generation, execution, and file management. The role requires 3+ years with React, Next.js, and Tailwind CSS plus experience scaling applications and backend systems.

150k – 200k/yr
On-site3+ YOEFrontend Engineering

About the role

Responsibilities

  • Build products that bring AI capabilities to millions of people.
  • Design and implement intuitive, responsive, and performant user interfaces.
  • Build experiences involving tool use, multi-step reasoning, code generation, code execution, file management, and secrets management.
  • Optimize application performance and ensure cross-browser compatibility.
  • Scale applications and backend systems.

Requirements

  • 3+ years of experience with React, Next.js, and Tailwind CSS.
  • Strong understanding of frontend primitives, including component architecture, state management, streaming UIs, and performance profiling.
  • Experience with relational databases, caching, background jobs, and authentication.
  • Examples of live projects or products built.

Nice-to-Haves

  • Experience building an AI side project.
  • Interest in prompting and experimenting with large language models.

Compensation and Benefits

  • Competitive base salary and meaningful equity.
  • Health and dental insurance.
  • Gym reimbursement.
  • Daily team meals.
  • Commuter benefits.

Interview Process

  • Introductory screening.
  • Short paid work trial lasting 2–3 days, involving ownership and delivery of a project in Julius.

Skills

ReactNext.jsTailwindcomponent architecturestate managementstreaming uisperformance profilingRelational DatabasesCachingbackground jobsAuthenticationLLMs

Similar roles

Frontend Engineering jobs
Momentic

Founding Engineer

MomenticSan Francisco, CA

Founding front-end engineer building an AI-native automated testing platform used by top teams at Notion, Retool, and Webflow. Requires 5+ years experience, strong TypeScript and React skills, and in-person work in SF.

150k – 220k/yrOn-site5+ YOEFrontend Engineering
Tabs

Software Engineer, Frontend

TabsNew York, NY

Frontend Platform engineer building a design system and component library to enable rapid feature development by teams and AI agents at an AI-native revenue platform startup. Requires 4+ years professional engineering experience and strong web development skills.

150k – 200k/yrOn-site4+ YOEFrontend Engineering
LangChain

JavaScript Engineer (Open Source Team)

LangChainSan Francisco, CA

Maintains and improves LangChain JavaScript packages, enhances documentation, supports open-source community, and builds example AI applications. Requires 3+ years software engineering experience and strong communication skills.

150k – 225k/yrOn-site3+ YOEFrontend Engineering
Siftstack

Software Engineer, Frontend

SiftstackMarina Del Rey, CA +1

Builds high-performance frontend interfaces and data visualization tools for real-time telemetry data using React, NextJS, and TypeScript. Requires 3+ years experience with web performance optimization and modern CSS.

160k – 200k/yrHybrid3+ YOEFrontend Engineering
Outset

Frontend Software Engineer

OutsetSan Francisco, CA

Build and optimize intuitive frontend interfaces for Outset's AI-powered user interview platform using React and Next.js. Lead projects end-to-end, integrate with APIs, and directly gather user feedback to improve UI/UX. Requires 3+ years frontend engineering experience.

160k – 300k/yrHybrid5+ YOEFrontend Engineering