← All roles

Software Engineer (Early Career)

Pax· Engineering
Apply on company site
San Francisco, CA$130k - $150k + equityFull-timePosted 2mo ago

About the role

Early-career software engineer role at Pax, building AI-powered tools for global trade, with ownership over end-to-end features and regular engagement with customers. In-person in San Francisco; visa sponsorship available; focus on backend, frontend, and AI/LLM-enabled solutions for regulatory-driven domain.

Responsibilities

  • Own real features end-to-end: API design, backend logic, frontend UI, and everything in between
  • Build tools that make complex regulations feel like magic
  • Work directly with customers to understand what matters, then ship fast
  • Build with LLMs to solve real problems for real businesses, not imaginary ones
  • Ship a real feature to production in Week 1
  • Deliver an end-to-end project alongside a founder within 30 days
  • Independently own a vertical end-to-end within 60 days
  • Work directly with enterprise clients and incorporate their feedback over time

Qualifications

  • Has built and shipped something they're proud of (portfolio, GitHub, side projects)
  • Deep backend architecture knowledge and attention to UI polish
  • Genuine curiosity about building with LLMs and willingness to learn
  • Ability to work with ambiguity in an early-stage environment
  • Hands-on experience with React, Next.js, FastAPI, SQLModel, Postgres, etc.

Skills

Required:ReactNext.jsFastAPIPostgres
Nice to have:SQLModel

Benefits

  • Not specified in description
Last updated Oct 21, 2026. Interested? Apply on the company site.
Pax logo

About Pax

AI Broker for Tariff Refunds

Pax uses AI to automate tariff refunds (aka duty drawback) for retailers and manufacturers. We launched 4 weeks ago and have ~$200K in contracts. Each year, 80% of eligible refunds—equivalent to $15B—go unclaimed. Pax is the first AI-powered broker helping brands under $50M reclaim 3-5% of their revenue. Our algorithms generate 15% more refunds than the industry leader and reduce processing time by 99% with AI. We are two technical founders: Penny got her PhD from MIT and, and was a former research scientist at Amazon & Flexport, where I encountered the problem firsthand. Chris is a second-time founder and former software engineer at Amazon, Brex, and TikTok.

More open roles at Pax