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Senior Software Engineer
Job in
San Francisco, San Francisco County, California, 94199, USA
Listed on 2026-01-23
Listing for:
Pax
Full Time
position Listed on 2026-01-23
Job specializations:
-
Software Development
Senior Developer, Software Engineer
Job Description & How to Apply Below
Join Pax as a Senior Software Engineer. Your actual pay will be based on your skills and experience.
Base Pay Range
$150,000 /yr – $200,000 /yr
About Pax
Pax helps retailers, manufacturers, and wholesalers get refunds when they pay tariffs. We’re building the control center for U.S. duty drawback—a $10B/year opportunity. We use AI and automation to recover tariffs paid by importers when goods are later exported, returned, or destroyed. Most companies don’t even realize they’re eligible, so we make sure no dollar is left behind.
What You’ll Do
• Own major features end-to-end: API design, backend logic, frontend UI, and everything in between.
• Build tools that make complex regulations feel like magic.
• Work closely with customers to understand what matters, then ship fast.
• Help shape our engineering culture, system architecture, and technical roadmap.
• Solve real problems for real businesses, not imaginary ones.
The Ideal Candidate
• Has built and shipped meaningful software at high-growth startups or tech-forward companies.
• Can go deep on backend architecture and also cares that the UI feels crisp.
• Is interested in building with LLMs to solve real world problems.
• Understands tradeoffs, knows when to move fast, and when to polish.
• Is comfortable with ambiguity and thrives in early‑stage environments.
• Doesn’t need permission to start something, but knows when to ask for input.
• Wants to own real outcomes—not just code.
• Has experience with frameworks such as React, Next.js, FastAPI, SQLModel, Postgres, etc.
We’re a small team by design. Your work will shape the future of the company—and the $10B+ industry we’re transforming. This will be the most fulfilling work of your career.
We work from San Francisco, in‑person. Our office is focused, fast, and full of energy.
If you’ve built something you’re proud of, we want to see it.
Referrals increase your chances of interviewing at Pax by 2x.
Seniority Level
Mid‑Senior level
Employment Type
Full‑time
Job Function
Engineering and Information Technology
Industries
International Trade and Development
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Position Requirements
10+ Years
work experience
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