Software Infrastructure Engineer

Ultra

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Brooklyn on site Until 8/21/2026 5+ years exp First posted May 25, 2026 Last posted May 25, 2026
Job description

About Ultra

Ultra builds industrial AI robots that are working in the real world today. Our robots automate mission-critical warehouse labor end-to-end, starting with e-commerce order packaging. We deploy fast, learn from real production data, and iterate aggressively. We already have a quickly growing number of revenue-generating robots operating in U.S. warehouses, and are now scaling towards thousands of deployments over the next few years. Our mission is simple: build the world's most useful and deployable robot.

WARNING: Robotics is not for the faint of heart. There are no silver bullets here. It is tiresome, unglamorous, and at times brutal work. The only way out is through, and the only way through is treacherous and unknown. But on the other side awaits insatiable demand and unimaginable opportunity. Join us if you dare.

Overview

We’re seeking a Software Infrastructure Engineer for our NYC team (in-person) so teams across Ultra can get safe, compliant access to the data they need to do their jobs. We don't want engineering to be the bottleneck on every stats page or internal tool. You’ll own the auth, permissions, and data-access platform that lets people build quickly and confidently.

Who You Are

  • You have 5+ years of professional software development experience
  • You’re dangerous with LLMs because you know when they’re wrong
  • You’ve thought hard about authentication, authorization, and misbehaving agents
  • You’re a software generalist across systems, proficient in Python, and know when to build vs buy
  • You ship production-quality infrastructure as part of a software team
  • You can look at a backlog of “we need access to X” requests and pick the highest-leverage platform investment

What You’ll Do

  • Own Ultra’s internal authentication and authorization system
  • Support software engineers and vibe-coders so everyone can ship code safely and quickly
  • Onboard new data sources and work with their permission models
  • Turn compliance requirements into enforceable platform controls

Bonus Points

  • You’ve built a comprehensive authentication and authorization system at another company
  • You have strong opinions about the best way to implement RBAC (and its limitations)

Equal Employment Opportunity Statement
We are an Equal Opportunity Employer. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. We are committed to creating a diverse and inclusive environment and encourage applicants from all backgrounds to apply.
About this role

Summary

Own internal auth, permissions, data platform; support engineers; onboard data sources; enforce compliance.

Job title

Software Infrastructure Engineer

Experience level

5+ years

Minimum experience

5+ years exp

Industry

industrial automation

Location requirements

onsite in Brooklyn, NY, no remote work allowed

Salary

Not specified

Management role

No

Skills & keywords

Required skills

Pythonauthenticationauthorization

Preferred skills

comprehensive authentication systemRBAC

Specializations

authenticationauthorizationdata-accessplatform
Locations

Structured locations inferred from the posting.

Brooklyn Park, MN, USA

On-site City
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