Software Engineer - Product (Mid to Senior)

San Francisco, CA Until 10/6/2026 3+ years exp First posted August 7, 2026 Last posted August 7, 2026
Job description

Compensation: Competitive base salary and meaningful equity

Benefits: Health & dental insurance, gym reimbursement, daily team meals, commuter benefits

We are an early stage applied AI startup building agents that automate knowledge work with code. We’re on a mission to enable one billion humans to become software creators, and we are starting with a focus on data science and analysis use cases.

Today, Julius writes and executes 1 million lines of code every 36 hours, has served over 1 million users and generated over 3 million data visualizations.

We're a small technical team with experience from Uber, Facebook and Scale AI. We're making revenue and we're backed by some of best investors like AI Grant, YCombinator, Bessemer Venture Partners and founders of Vercel, Notion, Perplexity, Palantir, Replit, Zapier, Intercom, Dropbox and researchers from OpenAI and Google DeepMind.

Building intuitive and performant user interfaces is critical to making Julius easy to use for over 1 million users. Our interface has several moving parts including tool use, multi-step reasoning, code generation, code execution, file and secrets management, and more. You will get to define and build the experiences for all of these as we scale to our future milestones.

What you'll do:

  • Build products that bring AI capabilities to millions of people

  • Design and implement intuitive, responsive, and performant user interfaces

  • Optimize application performance and ensure cross-browser compatibility

What we're looking for:

  • 3+ of experience with React, Next.js, Tailwind CSS

  • Strong understanding for frontend frontend primitives: component architecture, state management, streaming UIs, and performance profiling

  • Experience scaling applications and backend systems, have experience with relational databases, caching, background jobs, and auth.

  • Examples of live projects or products you've built

  • Bonus points: You have built an AI side project before, and like prompting and playing with LLMs

About the interview

  • Intro screen

  • Short paid work trial (2-3 days). Own and ship a project in Julius

Compensation (from employer):
Estimated Salary Range $150K – $200K • Offers Equity

About this role

Summary

Build and optimize AI-powered user interfaces for millions of users

Job title

Software Engineer - Product (Mid to Senior)

Experience level

3+ years

Minimum experience

3+ years exp

Industry

software

Location requirements

San Francisco, CA, on-site, remote not specified

Salary

$150k–$200k

Management role

No

Skills & keywords

Required skills

reactnext.jstailwind csscomponent architecturestate managementperformance profilingrelational databasescachingbackground jobsauth

Preferred skills

built an AI side projectpromptingplaying with llms

Specializations

reactnext.jstailwind cssfrontendui
Locations

Structured locations inferred from the posting.

San Francisco, CA, USA

On-site City